WO2020024116A1 - Interface configuration method, terminal device and interface - Google Patents

Abstract

An interface configuration method, a terminal device and an interface for ameliorating the problem of a CC pin of a type-c interface in a terminal device being corroded. In the method, a processing module in a terminal device configures, when determining that a type-c connector is not connected to an external device, a PD chip to be in a first operating state in which a CC pin continuously outputs a low level, and configures, when the processing module monitors that the type-c connector is connected to an external device by means of a monitoring module, the PD chip to be in a second operating state in which the CC pin outputs a high-low level square wave, such that the PD chip identifies the external device, thereby ensuring the normal operation of a type-c interface. According to the solution, when a type-c connector is not connected to an external device, a CC pin can be enabled to continuously output a low level, thereby greatly reducing the voltage difference between the CC pin and a GND pin and further relieving the corrosion of the CC pin after a type-c interface is affected by damp or is immersed in a liquid.

Description

Interface configuration method, terminal equipment and interface Technical field

The present application relates to the technical field of terminal equipment, and in particular, to an interface configuration method, terminal equipment, and interface.

Background technique

With the upgrading of the interface technology, the advantages of the type-c interface are now more and more favored by terminal equipment manufacturers due to its positive and negative availability, fast data transmission speed, and strong extended functions.

Due to the diversified scenes in which users use terminal devices, many terminal devices may be unable to charge the interface and cannot connect to other devices after being wet or immersed in liquid.

The reason for the above situation is that the type-c interface installed on the terminal device is in the high and low level (toggle) state by default, that is, a rectangular voltage square wave is output on the channel configuration (CC) pin with a period of 50ms-100ms; when the type-c interface is wet or immersed in liquid, there is a voltage difference between the CC pin and the ground (GND) pin in the type-c interface and a path is formed; this leads to the formation of the CC pin The material undergoes an electrolytic reaction, which causes corrosion of the CC pin.

Summary of the invention

The embodiments of the present application provide an interface configuration method, a terminal device, and an interface to improve the problem that the CC pin of the type-c interface in the terminal device is corroded.

In a first aspect, an embodiment of the present application provides a terminal device. The terminal device is installed with a type-c interface. The type-c interface includes a power output PD chip and a type-c connector. The channel configuration CC pin is connected to the type-c connector. The terminal device further includes a processing module and a monitoring module. In order to optimize the type-c interface, the processing module and the monitoring module have the following functions:

When determining that the type-c connector is not connected to an external device, the processing module sets the PD chip to a first working state (that is, a sink mode), shields the interrupt of the PD chip, and sends a startup to the monitoring module. A monitoring message to notify the monitoring module to start monitoring whether the type-c connector is connected to an external device;

After receiving the startup monitoring message, the monitoring module starts to monitor whether the type-c connector is connected to an external device, and when monitoring that the type-c connector is connected to an external device, sends a first A message

After receiving the first message, the processing module adjusts the PD chip from the first working state to a second working state (ie, a toggle mode), and starts receiving an interrupt of the PD chip.

Wherein, the CC pin of the PD chip continuously outputs a low level in the first working state, and the CC pin of the PD chip outputs a rectangular square wave of high and low levels in the second working state.

With this solution, when the processing module in the terminal device determines that the type-c connector is not connected to an external device, the PD chip is set to the first working state in which the CC pin continuously outputs a low level, and when the processing module passes When the monitoring module monitors that the type-c is connected to an external device, the PD chip is set to the second working state of the rectangular square wave of high and low level output by the cc pin, so that the PD chip recognizes the external device, thereby ensuring the type-c interface Works fine. The above solution can ensure that the type-c interface of the terminal device can be connected and recognize the normal operation of the external device. When the type-c connector is not connected to the external device, the CC pin continuously outputs a low level, thereby greatly reducing the CC. The voltage difference between the pin and the GND pin can further alleviate the situation that the CC pin is corroded after the type-c interface is wet or immersed in liquid, so as to optimize the type-c interface.

In a possible design, the processing module may determine that the type-c connector is not connected to an external device in the following two cases:

The first case: when the terminal device is powered on, it is determined that the type-c connector is not connected to an external device.

Because the user rarely uses the terminal device to start and start when the type-c connector is connected to an external device during the process of using the terminal device, the processor module may default to the type-c connection when the terminal device is started and started. The device is not connected to an external device.

The second case: when the second message sent by the PD chip is received, it is determined that the type-c connector is not connected to an external device; wherein the second message is that the PD chip works in the second Sent after it is determined that the type-c connector is not connected to an external device for a set duration.

Because the PD chip is in the toggle mode, it can detect whether the type-c connector is connected to an external device through a rectangular square wave output from the CC pin. Therefore, when the PD chip detects that the type-c connection is not connected to an external device, it can promptly notify the processing module, so that the processing module can set the PD chip to sink mode in a timely manner. In addition, in order to avoid misjudgment due to a PD chip, the PD chip will determine that the type-c connector is not connected to an external device within a set duration (for example, 5 seconds, 10 seconds), and then send the second Message.

In a possible design, the monitoring module includes a voltage dividing circuit and a monitoring chip; wherein the voltage dividing circuit provides a fixed voltage and is separately connected to the CC pin and the IC pin of the PD chip through a voltage dividing device. The type-c connector is connected; in this case, the monitoring chip has the following functions: monitoring the voltage change of the voltage dividing device; determining when the voltage change of the voltage dividing device exceeds a set voltage threshold, determining The type-c connector is connected to an external device; and the first message is sent to the processing module.

The monitoring chip may collect the voltage of the voltage dividing device through an ADC, and compare the voltage values collected by a set number of times to determine the change of the voltage dividing device.

Since the voltage dividing circuit is fixed when the type-c connector is not connected to an external device, the voltage value of the voltage dividing device collected by the monitoring chip through the ADC is also fixed. When the type-c connector is connected to an external device, the external device introduces a new voltage, current, or equivalent resistance, etc., which causes the voltage of the voltage dividing device to change. Therefore, by this design, the monitoring chip can quickly and accurately judge whether the type-c connector is connected to an external device by judging a voltage change of any voltage dividing device.

In a possible design, the processing module may set the PD chip to the first working state by sending a third message to the PD chip, and the third message is used to notify the PD chip that the PD chip will The working state is adjusted to the first working state; the processing module may adjust the PD chip from the first working state to the second working state by sending a fourth message to the PD chip. The fourth message is used to notify the PD chip to adjust the working state to the second working state.

With this design, the processing module can set the working state of the PD chip.

In a possible design, after receiving the first message, the processing module sends a stop monitoring message to the monitoring module, where the stop monitoring message is used to notify the monitoring module to stop monitoring the type-c Whether the connector is connected to an external device; in this case, the monitoring module stops monitoring whether the type-c connector is connected to an external device after receiving the stop monitoring message. By this design, it can be avoided that the monitoring module continues to monitor the PD chip in the toggle mode, causing waste of power.

In a possible design, the processing module and the PD chip communicate with each other through an internal integrated circuit I2C bus. For example, when the processing module is a SOC, the SOC and the PD chip may transmit the second message, the third message, the fourth message, and the like through an I2C bus.

In a possible design, the processing module and the monitoring module communicate through a synchronous serial interface SSI. For example, when the processing module is a SOC and the monitoring module includes a PMU, the above-mentioned start monitoring message, stop monitoring message, first message, etc. may be transmitted between the SOC and the PMU through SSI.

In a second aspect, an embodiment of the present application further provides a terminal device. The terminal device is installed with a type-c interface. The type-c interface includes a power output PD chip and a type-c connector. The CC pin of the channel configuration is connected to the type-c connector. The terminal device further includes a memory and a processor, and the program is stored in the memory. In order to optimize the type-c interface, the processor can read the program in the memory and perform the following operations:

When it is determined that the type-c connector is not connected to an external device, set the PD chip to a first working state, shield the terminal of the PD chip, and start monitoring whether the type-c connector is connected to an external device; And when determining that the type-c connector is connected to an external device, adjust the PD chip from the first working state to a second working state, and start receiving an interrupt of the PD chip; wherein the PD chip The CC pin continuously outputs a low level in the first working state, and the PD chip outputs a rectangular square wave of high and low levels in the second working state.

With this solution, when the processor in the terminal device determines that the type-c connector is not connected to an external device, the PD chip can be set to sink mode, and the PD chip is set when it is determined that the type-c connector is connected to an external device. It is toggle mode. In this way, without affecting the normal operation of the terminal device, when the type-c connector is not connected to an external device, the CC pin in the PD chip continuously outputs a low level, thereby greatly reducing the CC pin and GND. The voltage difference between the pins can further alleviate the situation that the CC pin is corroded after the type-c interface is wet or immersed in liquid, so as to optimize the type-c interface.

In a possible design, the processor may determine that the type-c connector is not connected to an external device in the following two cases:

The first case: when the terminal device is powered on, it is determined that the type-c connector is not connected to an external device;

The second case: when the first message sent by the PD chip is received, it is determined that the type-c connector is not connected to an external device; wherein the first message is that the PD chip works in the second Sent after it is determined that the type-c connector is not connected to an external device for a set duration.

In a possible design, the terminal device further includes a voltage dividing circuit, the voltage dividing circuit provides a fixed voltage, and is separately connected to the CC pin and the type-c of the PD chip through a voltage dividing device. The connector is connected; in this case, the processor monitors a voltage change of the voltage dividing device; when the voltage change of the voltage dividing device is monitored to exceed a set voltage threshold, it is determined that the type-c connector is connected externally device.

In a possible design, the processor may implement the above-mentioned monitoring function through other devices (for example, PMU, etc.) separate from it. Specifically, the processor may send an instruction message to the device to notify the device to start or stop monitoring whether the type-c connector is connected to an external device, and determine the type-c by receiving a notification message from the device. The connector connects external devices. Optionally, the processor and the device can communicate through SSI.

In a possible design, the processor may set the PD chip to the first working state by sending a second message to the PD chip; the processor may send a first message to the PD chip by Three messages, adjusting the PD chip from the first working state to the second working state.

With this design, the processor can set the working state of the PD chip.

In a possible design, after determining that the type-c connector is connected to an external device, the processor stops monitoring whether the type-c connector is connected to an external device.

By this design, it can be avoided that the processor continues to monitor the PD chip in the toggle mode, resulting in a waste of power.

In a possible design, the processor and the PD chip communicate with each other through an internal integrated circuit I2C bus.

According to a third aspect, an embodiment of the present application further provides an interface, where the interface includes a power output PD chip and a type-c connector, and a channel pin configured in the PD chip is connected to the type-c connector . The PD chip has the following functions:

When receiving the first message sent by the processor in the terminal device, adjusting the working state of the PD chip to the first working state; and when receiving the second message sent by the processor, changing the PD The working state of the chip is adjusted to a second working state; wherein the first message is used to notify the PD chip to adjust the working state to the first working state; the PD chip is CC under the first working state The pin continuously outputs a low level; the connecting component is connected to the PD chip; the second message is used to notify the PD chip to adjust the working state to the second working state; the PD chip is in the In the second working state, the CC pin outputs a rectangular square wave of high and low levels.

With this solution, the PD chip in the interface can adjust its working state according to the instruction message when receiving the instruction message sent by the processor in the terminal device. Based on the interface, when the processor determines that the type-c connector in the interface is not connected to an external device, it can set the PD chip to sink mode, and when it determines that the type-c connector is connected to an external device, The PD chip is set to toggle mode. In this way, without affecting the normal operation of the terminal device, when the type-c connector is not connected to an external device, the CC pin in the PD chip continuously outputs a low level, thereby greatly reducing the CC pin and GND. The voltage difference between the pins can further alleviate the situation that the CC pin is corroded after the type-c interface is wet or immersed in liquid, so as to optimize the type-c interface.

In a possible design, the PD chip is further used for:

In the second working state, determine that the type-c connector is not connected to an external device for a set duration, and send a third message to the processor, where the third message is used to notify the type- cThe external device is not connected.

With this design, when the PD chip detects that the type-c connection is not connected to an external device, it can notify the processor in time, so that the processor can set the PD chip to sink mode in time. In addition, in order to avoid misjudgment due to the PD chip, the PD chip sends the third message after determining that the type-c connector is not connected to an external device within a set duration (for example, 5 seconds, 10 seconds). .

In a possible design, the PD chip and the processor communicate with each other through an internal integrated circuit I2C bus.

In a fourth aspect, an embodiment of the present application further provides an interface configuration method, which is applied to a processor in a terminal device, where the terminal device includes a power output PD chip and a type-c connector, and the PD chip The channel configuration in the CC pin is connected to the type-c connector; the processor has the functions of the processing module and the monitoring module in the first aspect, or the functions of the processor in the second aspect. The method specifically includes the following steps:

When the processor determines that the type-c connector is not connected to an external device, the processor sets the PD chip to a first working state, shields the interrupt of the PD chip, and starts monitoring whether the type-c connector is Connected to an external device; wherein the PD chip continuously outputs a low level under the first working state of the PD chip;

When determining that the type-c connector is connected to an external device, the processor adjusts the PD chip from the first working state to a second working state, and starts receiving an interrupt of the PD chip; the PD The CC pin outputs a rectangular square wave of high and low levels in the second working state of the chip.

In a fifth aspect, an embodiment of the present application further provides a computer program, and when the computer program is run on a computer, the computer is caused to execute the method provided in the fourth aspect.

According to a sixth aspect, an embodiment of the present application further provides a computer storage medium. The computer storage medium stores a computer program. When the computer program is executed by a computer, the computer is caused to execute the method provided by the fourth aspect. .

In a seventh aspect, an embodiment of the present application further provides a chip, which is used to read a computer program stored in a memory and execute the method provided in the fourth aspect.

In an eighth aspect, an embodiment of the present application further provides a chip system including a processor, which is configured to support a computer device to implement the method provided in the fourth aspect. In a possible design, the chip system further includes a memory, and the memory is configured to store programs and data necessary for the computer device. The chip system can be composed of chips, and can also include chips and other discrete devices.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of a terminal device according to an embodiment of the present application; FIG.

FIG. 2 is a structural example diagram of a terminal device according to an embodiment of the present application; FIG.

FIG. 3 is an example equivalent circuit diagram of a terminal device when a type-c connector provided by an embodiment of the present application is not connected to an external device; FIG.

4a-4d are equivalent circuit diagrams of a terminal device when a type-c connector according to an embodiment of the present application is connected to an external device;

5 is a structural diagram of another terminal device according to an embodiment of the present application;

6 is a flowchart of an interface configuration method according to an embodiment of the present application;

FIG. 7 is a flowchart of an example interface configuration according to an embodiment of the present application.

detailed description

This application provides an interface configuration method, a terminal device, and an interface to improve the problem that the CC pin of the type-c interface in the terminal device is corroded. Among them, the method and equipment are based on the same inventive concept. Since the principle of the method and the equipment to solve the problem is similar, the implementation of the equipment and the method can be referred to each other, and the duplicates are not described again.

In the solution provided by the embodiment of the present application, when the processing module in the terminal device determines that the type-c connector is not connected to an external device, the PD chip is set to the first working state where the CC pin continuously outputs a low level, and When the processing module monitors the type-c connection to an external device through a monitoring module, setting the PD chip to a second working state of a rectangular square wave of high and low level output by the cc pin, so that the PD chip recognizes the external device, So as to ensure the normal work of the type-c interface. The above solution can ensure that the type-c interface of the terminal device can be connected and recognize the normal operation of the external device. When the type-c connector is not connected to the external device, the CC pin continuously outputs a low level, thereby greatly reducing the CC. The voltage difference between the pin and the GND pin can further alleviate the situation that the CC pin is corroded after the type-c interface is wet or immersed in liquid, so as to optimize the type-c interface.

In the following, some terms in this application are explained so as to understand with those skilled in the art.

1) Terminal equipment, also known as electronic equipment and user equipment (UE), has a type-c interface installed inside, which can connect other external equipment and provide users with specific functions. Optionally, the terminal device may be a handheld device, a vehicle-mounted device, or the like. For example, mobile phones, tablets, laptops, PDAs, mobile Internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) Equipment, wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote surgery, wireless terminal in smart grid, transportation security wireless terminals in (transportation safety), wireless terminals in smart cities, or wireless terminals in smart homes, etc.

2) External device, a device capable of connecting a terminal device through a type-c interface. Optionally, the external device may be an adapter, a headset, a mobile hard disk, a printer, a universal serial bus (Universal Serial Bus, USB) flash disk (U disk for short), and other devices.

3) Type-c interface, which can realize the connection between terminal equipment and external equipment, and provide the interface of data transmission and charging function. The type-c interface includes a type-c connector and a power output (PD) chip, and each pin in the PD chip is connected to the type-c connector.

A type-c connector is a connector placed on the bottom of a terminal device. It can transmit current and signals after connecting other active devices.

PD chip, including 24 pins. The 24 pins include TX + pin, TX- pin, RX + pin, RX- pin, VBUS pin, CC pin, D + pin, D- pin, and GND pin. The PD chip can perform functions such as detecting whether the type-c connector is connected to an external device through the above-mentioned pins, and then perform data transmission or charging and discharging functions.

Traditionally, the PD chip will always be in the high and low level (toggle) mode, that is, the CC pin of the PD chip will output a rectangular square wave of high and low levels. When the type-c connector is connected to an external device, the external device will introduce new voltage, current, or equivalent resistance, etc. This will cause the waveform of the output on the CC pin to change. The PD chip can monitor this waveform change. Detect whether the type-c connector is connected to an external device. If the PD chip detects that the type-c connector is connected to an external device, it will initiate an interrupt to the processing module in the terminal device to notify the processing module to perform a series of subsequent operations such as identifying the type of the external device to ensure the normal operation of the terminal device.

4) Power management unit (PMU), as the power management unit of each chip in the terminal device, can provide the power required by each chip to ensure the normal operation of each chip of the terminal device. Among them, the PMU also integrates an analog-to-digital converter (ADC), which can sample voltages and signals of certain pins in the type-c interface.

5) a processing module for controlling and managing the PD chip. Traditionally, when the PD chip detects that the type-c connector is connected to an external device, it will initiate an interrupt to the processing module. After receiving the interrupt, the processing module will obtain information from the PD chip. In order to identify the type of the external device, the subsequent work of the PD chip is set, and the PD chip is controlled and managed.

Optionally, the processing module may be a processor (ie, a central processing unit (CPU)) in a terminal device, or another device having a processing function independent of the processor.

For example, the processing module may be a field-programmable gate array (FPGA), a complex programmable logic device (CPLD), an application-specific integrated circuit (ASIC), Or system-on-chip (System on chip, SOC) and some programmable chips.

In addition, it should be understood that in the description of this application, the words "first" and "second" are used only for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor as indicating Or imply order.

The following describes embodiments of the present application with reference to the drawings.

FIG. 1 shows a structural diagram of a terminal device provided by an embodiment of the present application. Referring to FIG. 1, a type-c interface is installed in the terminal device, that is, the type-c connector 104 and the PD chip 103 shown in the figure. All the pins in the PD chip 103 are connected to corresponding pins in the type-c connector 104. For simplicity, only two CC pins (CC1 cited in the embodiment of the present application) are shown in the figure. Pin and CC2 pin).

In order to optimize the type-c interface, the terminal device further includes a processing module 101 and a monitoring module 102. The following first introduces the functions of each module:

A processing module 101, configured to determine that the type-c connector 104 is connected to an external device, set the PD chip 103 to a first working state (also referred to as a low-level (sink) mode), and shield the PD chip 103 The PD chip 103 interrupts and sends a monitoring start message to the monitoring module 102. The PD chip 103 continuously outputs a low level in the CC pin in the first working state, and the startup monitoring message is used to notify the monitoring module 102 to start monitoring whether the type-c connector 104 is connected to an external device. device.

The monitoring module 102 is configured to, after receiving the startup monitoring message, start monitoring whether the type-c connector 104 is connected to an external device, and when monitoring that the type-c connector 104 is connected to an external device, The processing module 101 sends a first message. The first message is used to notify the processing module 101 that the type-c connector 104 is connected to an external device, so that the processing module 101 resets the working state of the PD chip 103 so as not to affect the terminal. The device is working properly.

The processing module 101 is further configured to adjust the PD chip 103 from the first working state to the second working state (also referred to as a toggle mode) after receiving the first message, and Start receiving the interrupt of the PD chip 103. Wherein, the PD chip 103 outputs a rectangular square wave of high and low levels in the CC pin in the second working state.

Through the above solution, when the processing module 101 in the terminal device determines that the type-c connector 104 is not connected to an external device, it can set the PD chip 103 to sink mode and determine the type-c connector 104 The PD chip 103 is set to the toggle mode when an external device is connected. In this way, without affecting the normal operation of the terminal device, when the type-c connector 103 is not connected to an external device, the CC pin in the PD chip 103 continuously outputs a low level, thereby greatly reducing the CC pin. The voltage difference from the GND pin can further alleviate the situation that the CC pin is corroded after the type-c interface is wet or immersed in liquid, so as to optimize the type-c interface.

In an implementation manner, the processing module 101 may determine that the type-c connector 104 is not connected to an external device in the following two cases:

The first case: when the terminal device is powered on, it is determined that the type-c connector 104 is not connected to an external device.

Because the user rarely uses the terminal device to start up when the type-c connector 104 is connected to an external device during the process of using the terminal device, in the embodiment of the present application, when the terminal device is started and started, the default type- The c connector 104 is not connected to an external device.

The second case: when receiving the second message sent by the PD chip 103, it is determined that the type-c connector 104 is not connected to an external device; wherein the second message is that the PD chip 103 is in the Sent after determining that the type-c connector 104 is not connected to an external device for a set duration in the second working state.

According to the above description of the PD chip 103, when the PD chip 103 is in the toggle mode, it can detect whether the type-c connector 103 is connected to an external device through a rectangular square wave output from the CC pin. Therefore, when the PD chip 103 detects that the type-c connection 103 is not connected to an external device, it can notify the processing module 101 in time, so that the processing module 101 can set the PD chip 103 to sink mode in a timely manner. .

In addition, in order to avoid misjudgment due to the PD chip 103, the PD chip 103 sends the second message after determining that the type-c connector 104 is not connected to an external device within a continuously set duration. Optionally, the set duration can be set to 5 seconds, 10 seconds, or the like.

In one implementation, the processing module 101 may set the PD chip 103 to the first working state by the following steps:

Send a third message to the PD chip 103, where the third message is used to notify the PD chip 103 to adjust a working state to the first working state.

Similarly, the processing module 101 can adjust the PD chip 103 from the first working state to the second working state by the following steps:

Send a fourth message to the PD chip 103, where the fourth message is used to notify the PD chip 103 to adjust a working state to the second working state.

In an implementation manner, the processing module 101 may further send a stop monitoring message to the monitoring module 102 after receiving the first message, and the stop monitoring message is used to notify the monitoring module 102 to stop monitoring the office. Whether the type-c connector 104 is connected to an external device; the monitoring module 102 stops monitoring whether the type-c connector 104 is connected to an external device after receiving the stop monitoring message.

In this way, it can be avoided that the monitoring module 102 continues to monitor the PD chip 103 in the toggle mode, resulting in waste of power.

Optionally, the processing module 101 and the PD chip 103 may communicate through an inter-integrated circuit (I2C) bus to transmit the second message, the third message, and the fourth message.

Optionally, the processing module 101 and the monitoring module 102 may communicate through a synchronous serial interface (SSI), and transmit the above-mentioned start monitoring message, stop monitoring message, first message, and the like. Optionally, the first message is an interrupt.

It should be noted that, in the embodiment of the present application, the processing module 101 may be implemented in multiple ways, for example, FPGA, ASIC, SOC, etc., which is not limited in this application.

In addition, in the embodiment of the present application, the monitoring module 102 may also be implemented in multiple ways, for example, a dedicated integrated circuit, an FPGA, or the like. Optionally, in one implementation, the monitoring module 102 includes a voltage dividing circuit and a monitoring chip. The voltage dividing circuit provides a fixed voltage, and is connected to the CC pin of the PD chip 103 and the type-c connector 104 through a voltage dividing device (for example, a resistor). Optionally, the connection relationship between the monitoring module 102 and the terminal device is shown in FIG. 2.

The monitoring chip is specifically configured to: monitor a voltage change of the voltage dividing device; when the voltage change of the voltage dividing device is monitored to exceed a set voltage threshold, determine that the type-c connector 104 is connected to an external device; And sending the first message to the processing module 101.

The monitoring chip continuously collects the voltage values of the voltage-dividing device 1 and the voltage-dividing device 2 through ADC1 and ADC2, and compares the voltage values with the voltage values collected last time to determine the voltage change of each voltage-dividing device. In addition, the monitoring chip saves the voltage value of the newly collected voltage-dividing device, so that it can continue to determine the voltage change in the future.

Optionally, the monitoring chip may be a PMU.

Because when the type-c connector 104 is not connected to an external device, the voltage dividing circuit is fixed, and the voltage values of the two voltage dividing devices collected by the monitoring chip through ADC1 and ADC2 are also fixed. When the type-c connector 104 is connected to an external device, the external device introduces a new voltage, current, or equivalent resistance, etc., which causes the voltage of the voltage dividing device to change. Therefore, the monitoring chip can determine whether the type-c connector 104 is connected to an external device by determining a voltage change of any voltage dividing device.

In the above implementation manner, the value of the set voltage threshold may be specifically set according to factors such as a specific scenario, a value of a voltage dividing device in a voltage dividing circuit, and a value of a fixed voltage.

For example, as shown in Figure 3, when the fixed voltage in the voltage divider circuit is 1.8V and each voltage divider is 51kΩ, each CC pin and the voltage divider circuit are connected to the path between the CC pin and the type-c connector. When the equivalent resistance between the nodes is 120Ω, the voltage value of the two voltage-dividing devices that the monitoring chip can monitor through ADC1 and ADC2 is 0.165V, and the set voltage threshold is 0.04V.

The following continues to use the equivalent circuit of the terminal device shown in FIG. 3 as an example to test the above interface configuration method by connecting the type-c connector with various external devices. The following description only uses external devices as common adapters, PD adapters, OTG cables, digital headphones, and analog headphones.

Example 1: When a type-c connector is connected to a common adapter, the equivalent circuit of the terminal device is shown in Figure 4a.

Due to the different types of ordinary adapters in the market, when different ordinary adapters are connected to type-c connectors, the values of VBUS and 3 equivalent resistors in the equivalent circuit are different, and the voltage of the voltage dividing device 1 sampled by ADC1 is also Different, the voltage change of the voltage dividing device 1 before and after the type-c connector is connected to the ordinary adapter is also different. The specific values of the above items are shown in the following Tables 1 to 3:

Table 1

Equivalent resistance 1	4.71kΩ
Equivalent resistance 2	4.71kΩ
Equivalent resistance 3	56kΩ
VBUS	5V
Voltage of the voltage-dividing device 1 sampled by ADC1	0.499V
Voltage change of voltage-dividing device 1	0.334V

Table 2

Equivalent resistance 1	5.62kΩ
Equivalent resistance 2	5.62kΩ
Equivalent resistance 3	2kΩ
VBUS	5V
Voltage of the voltage-dividing device 1 sampled by ADC1	3.635V
Voltage change of voltage-dividing device 1	3.470V

table 3

Equivalent resistance 1	5.62kΩ
Equivalent resistance 2	5.62kΩ
Equivalent resistance 3	10kΩ
VBUS	9V
Voltage of the voltage-dividing device 1 sampled by ADC1	3.143V
Voltage change of voltage-dividing device 1	2.978V

Example 2: When a type-c connector is connected to a PD adapter, the equivalent circuit of the terminal device is shown in Figure 4b.

Due to the different models of PD adapters on the market, when different PD adapters are connected to type-c connectors, the current supplied by the current source and the values of the two equivalent resistors are different, and the voltage of the voltage dividing device 1 sampled by ADC1 is also different. Finally, the voltage change of the voltage dividing device 1 before and after the type-c connector is connected to the PD adapter is also different. For the specific values of the above items, refer to the following Table 4 to Table 6:

Table 4

Equivalent resistance 1	4.7kΩ
Equivalent resistance 2	4.7kΩ
Current from current source	0.08A
Voltage of the voltage-dividing device 1 sampled by ADC1	0.376V
Voltage change of voltage-dividing device 1	0.211V

table 5

Equivalent resistance 1	5.1kΩ
Equivalent resistance 2	5.1kΩ
Current from current source	0.18A
Voltage of the voltage-dividing device 1 sampled by ADC1	0.918V
Voltage change of voltage-dividing device 1	0.753V

Table 6

Equivalent resistance 1	5.6kΩ
Equivalent resistance 2	5.6kΩ
Current from current source	0.33A
Voltage of the voltage-dividing device 1 sampled by ADC1	1.848V
Voltage change of voltage-dividing device 1	1.683V

Example 3: When a type-c connector is connected to a plug-and-play (OTG) line or a digital headset, the equivalent circuit of the terminal device is shown in FIG. 4c.

For the values of the three equivalent resistors in the equivalent circuit, the voltage of the voltage-dividing device 1 sampled by ADC1, and the voltage changes of voltage-dividing device 1 before and after the type-c connector is connected to the OTG line or digital headphones, see the following. Table 7:

Table 7

Equivalent resistance 1	2.419kΩ
Equivalent resistance 2	2.419kΩ
Equivalent resistance 3	2.419kΩ
Voltage of the voltage-dividing device 1 sampled by ADC1	0.082V
Voltage change of voltage-dividing device 1	0.083V

Example 4: When a type-c connector is connected to an analog headset, the equivalent circuit of the terminal device is shown in Figure 4d.

The specific values of the four equivalent resistors in the equivalent circuit, the voltage of the voltage-dividing device 1 sampled by ADC1, and the voltage change of the voltage-dividing device 1 before and after the type-c connector is connected to the analog headphones are shown in Table 7 below.

It should be noted that the voltage of the voltage-dividing device 2 sampled by ADC2 is the same as the voltage of voltage-dividing device 1 sampled by ADC1. Correspondingly, the voltage change and voltage of type-c connector 2 before and after the analog earphone is connected to the type-c connector The voltage change of the voltage dividing device 2 before and after the c connector is connected to the analog earphone is the same, and is not listed here.

Table 8

Equivalent resistance 1	0.13kΩ
Equivalent resistance 2	0.13kΩ
Equivalent resistance 3	0.15kΩ
Equivalent resistance 4	0.15kΩ
Voltage of the voltage-dividing device 1 sampled by ADC1	0.005V
Voltage change of voltage-dividing device 1	0.160V

According to the voltage change of the voltage dividing device 1 in the above examples, it can be known that, regardless of the type of the external device, the voltage change of at least one voltage dividing device before and after the type-c connector is connected to the external device exceeds the set voltage threshold of 0.04V. Therefore, experiments prove that the monitoring module can accurately determine whether the type-c connector is connected to an external device by monitoring the relationship between the voltage change of the voltage dividing device and the set voltage threshold.

It should be noted that the division of the modules in the above embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner. In addition, each function in each embodiment of the present application Units can be integrated in one processing unit, or they can exist separately physically, or two or more units can be integrated in one unit. The above integrated unit may be implemented in the form of hardware or in the form of software functional unit.

When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially a part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium. , Including a number of instructions to cause a computer device (which may be a personal computer, a server, or a network device) or a processor to perform all or part of the steps of the method described in the embodiments of the present application. The aforementioned storage media include: U disks, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks or compact discs, and other media that can store program codes .

Based on the above embodiments, in order to optimize the type-c interface, this application also provides a terminal device. Referring to FIG. 5, a type-c interface is installed in the terminal device, that is, a power output PD chip 503 and a type-c connector 504 shown in the figure. All the pins in the PD chip 503 are connected to corresponding pins in the type-c connector 504. For simplicity, only two CC pins (ie, the CC1 pin and the CC2 pin in the figure) involved in the embodiment of the present application are exemplarily shown in FIG. 5. The terminal device further includes a processor 501 and a memory 502.

The processor 501, the memory 502, and the PD chip 503 are connected to each other. Optionally, the processor 501 and the memory 502 may be connected to each other through a bus 505; the bus 505 may be a peripheral component interconnect (PCI) bus or an extended industry standard structure (extended industry standard structure) architecture, EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 5, but it does not mean that there is only one bus or one type of bus.

Optionally, the terminal device may further include a transceiver for performing wireless communication with a network device in a mobile communication system.

The processor 501 integrates the processing function of the processing module 101 in the terminal device as shown in FIG. 1 and the monitoring function in the monitoring module 102, and can perform the following operations:

When it is determined that the type-c connector 504 is not connected to an external device, the PD chip 503 is set to a first working state, the interrupt of the PD chip 503 is shielded, and whether the type-c connector 504 is monitored is started. Connected to an external device; wherein the PD pin 503 continuously outputs a low level under the first working state;

When it is determined that the type-c connector 504 is connected to an external device, the PD chip 503 is adjusted from the first working state to the second working state, and an interrupt of receiving the PD chip 503 is started; the PD chip 503 In the second working state, the CC pin outputs a rectangular square wave of high and low levels.

In an implementation manner, when the processor 501 determines that the type-c connector 504 is not connected to an external device, it is specifically configured to:

When the terminal device is powered on, it is determined that the type-c connector 504 is not connected to an external device; or

When receiving the first message sent by the PD chip 503, it is determined that the type-c connector 504 is not connected to an external device; wherein the first message is that the PD chip 503 is in the second working state Sent after determining that the type-c connector 504 is not connected to an external device for a set duration.

Optionally, the processor 501 can monitor whether the type-c connector 504 is connected to an external device in various ways. For example, the processor 501 may implement the monitoring function by its own hardware or software; or the processor 501 may implement the monitoring function by means of a circuit.

In an implementation manner, the terminal device further includes a voltage dividing circuit that provides a fixed voltage, and is separately connected to the CC pin and the type- of the PD chip 503 through a voltage dividing device. c connector 504 is connected;

When the processor 501 monitors whether the type-c connector 504 is connected to an external device, it is specifically configured to:

Monitoring a voltage change of the voltage dividing device;

When it is detected that the voltage change of the voltage dividing device exceeds a set voltage threshold, it is determined that the type-c connector 504 is connected to an external device.

In an implementation manner, the processor 501 may collect the voltage in the voltage dividing device through a voltage sampling device (such as an ADC in a PMU) of the terminal device, and then collect the The voltage value determines the voltage change of the voltage dividing device.

In an implementation manner, when the processor 501 sets the PD chip 503 to the first working state, the processor 501 is specifically configured to:

Sending a second message to the PD chip 503, where the second message is used to notify the PD chip 503 to adjust a working state to the first working state;

When the processor 501 adjusts the PD chip 503 from the first working state to the second working state, the processor 501 is specifically configured to:

Send a third message to the PD chip 503, where the third message is used to notify the PD chip 503 to adjust a working state to the second working state.

In an implementation manner, the processor 501 is further configured to:

After determining that the type-c connector 504 is connected to an external device, monitoring of whether the type-c connector 504 is connected to an external device is stopped.

In an implementation manner, the processor 501 may implement the above-mentioned monitoring function through other devices (for example, PMU, etc.) separate from the processor. Specifically, the processor 501 may send an instruction message to the device to notify the device to start or stop monitoring whether the type-c connector 504 is connected to an external device, and determine the type by receiving a notification message from the device. -c connector 504 connects an external device. Optionally, the processor 501 and the device may communicate through SSI.

In an implementation manner, the processor 501 and the PD chip 503 communicate with each other through an I2C bus to transmit the first message, the second message, and the third message.

The memory 502 is configured to store programs and the like. Specifically, the program may include program code, and the program code includes a computer operation instruction. The memory 502 may include random access memory (RAM), and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. The processor 501 reads and executes the program stored in the memory 502 to implement the functions described above, and thus optimizes the type-c interface.

An embodiment of the present application provides a terminal device. When the processor in the terminal device determines that the type-c connector is not connected to an external device, the PD chip can be set to a sink mode, and the type-c connector is determined. Set the PD chip to toggle mode when connecting external devices. In this way, without affecting the normal operation of the terminal device, when the type-c connector is not connected to an external device, the CC pin in the PD chip continuously outputs a low level, thereby greatly reducing the CC pin and GND. The voltage difference between the pins can further alleviate the situation that the CC pin is corroded after the type-c interface is wet or immersed in liquid, so as to optimize the type-c interface.

Based on the above embodiments, this application further provides an interface, which can be installed in the terminal device shown in FIGS. 1-3 and FIG. 5. The interface includes a power output PD chip and a type-c connector, and a channel configuration CC pin in the PD chip is connected to the type-c connector.

Among them, the PD chip can not only implement traditional functions through the pins it contains, but also perform the following operations:

When receiving the first message sent by the processor in the terminal device, adjusting the working state of the PD chip to the first working state; wherein the first message is used to notify the PD chip to adjust the working state to The first working state; the PD chip continuously outputs a low level under the first working state; the connecting component is connected to the PD chip;

Upon receiving a second message sent by the processor, adjusting the working state of the PD chip to a second working state; wherein the second message is used to notify the PD chip to adjust the working state to the A second working state; in the second working state, the CC pin outputs a rectangular square wave of high and low levels.

In an implementation manner, the PD chip is further configured to:

In the second working state, determine that the type-c connector is not connected to an external device for a set duration, and send a third message to the processor, where the third message is used to notify the type- cThe external device is not connected.

In an implementation manner, the PD chip and the processor communicate with each other through an internal integrated circuit I2C bus.

An embodiment of the present application provides an interface, and when a PD chip in the interface receives an instruction message sent by a processor in a terminal device, it can adjust its working state according to the instruction message. Based on the interface, when the processor determines that the type-c connector in the interface is not connected to an external device, it can set the PD chip to sink mode, and when it determines that the type-c connector is connected to an external device, The PD chip is set to toggle mode. In this way, without affecting the normal operation of the terminal device, when the type-c connector is not connected to an external device, the CC pin in the PD chip continuously outputs a low level, thereby greatly reducing the CC pin and GND. The voltage difference between the pins can further alleviate the situation that the CC pin is corroded after the type-c interface is wet or immersed in liquid, so as to optimize the type-c interface.

Based on the above embodiments, this application also provides an interface configuration method. The method is applied to a processor in a terminal device as shown in FIG. 5, where the terminal device includes a power output PD chip and a type-c connector. A channel configuration CC pin in the PD chip is connected to the type-c connector. Referring to FIG. 6, the method includes the following processes:

S601: When the processor determines that the type-c connector is not connected to an external device, the processor sets the PD chip to a first working state (that is, sink mode), shields the interrupt of the PD chip, and starts a monitoring station. Describes whether the type-c connector is connected to an external device.

Wherein, the CC pin continuously outputs a low level in the PD chip in the first working state.

In one implementation, the processor may, but is not limited to, determine that the type-c connector is not connected to an external device in the following two ways:

First method: When the terminal device is powered on, the processor determines that the type-c connector is not connected to an external device.

Second method: When the processor receives the first message sent by the PD chip, it determines that the type-c connector is not connected to an external device; wherein the first message is that the PD chip is in the first Sent after determining that the type-c connector has not been connected to an external device for a set period of time in the second working state (ie, the toggle mode).

In the above second manner, the PD chip may send the first message to the processor through an I2C bus.

In another implementation manner, the processor may set the PD chip to the first working state through the following steps:

The processor sends a second message to the PD chip, and the second message is used to notify the PD chip to adjust a working state to the first working state.

Optionally, the processor may send the second message to the PD chip through an I2C bus.

S602: When the processor determines that the type-c connector is connected to an external device, the processor adjusts the PD chip from the first working state to a second working state, and starts receiving an interrupt of the PD chip.

Wherein, the PD chip outputs a rectangular square wave of high and low levels at the CC pin in the second working state.

In one implementation, similar to the processor setting the PD chip to the first working state, the processor may adjust the PD chip from the first working state to the first working state by the following steps. Describe the second working state:

The processor sends a third message to the PD chip, and the third message is used to notify the PD chip to adjust a working state to the second working state.

Optionally, the processor may send the third message to the PD chip through an I2C bus.

Optionally, in the embodiments of the present application, the processor may implement the monitoring function in multiple ways.

For example, when the terminal device further includes a voltage dividing circuit as shown in FIG. 2, and the processor has the functions of a monitoring chip and a processing module in FIG. 2, the processor may monitor the voltage of the voltage dividing device. When the voltage change of the voltage dividing device exceeds a set voltage threshold, the processor determines that the type-c connector is connected to an external device.

In addition, in order to prevent the PD chip from continuing to monitor the waste of power caused by the processor in the toggle mode, in the embodiment of the present application, after the processor determines that the type-c connector is connected to an external device, the The method also includes:

The processor stops monitoring whether the type-c connector is connected to an external device.

In an implementation manner, the processor may internally integrate other devices (for example, PMU, etc.) or modules with a monitoring function to implement the above monitoring function, or use other devices or modules with a monitoring function that are separate from the processor. The monitoring function. Specifically, the processor may notify the device to start or stop monitoring whether the type-c connector is connected to an external device by sending an instruction message to the device, and determine the type-c by receiving a notification message from the device. The connector connects external devices.

Optionally, the processor and the device can communicate through SSI.

An embodiment of the present application provides an interface configuration method. In this method, when the processor in the terminal device determines that the type-c connector is not connected to an external device, the PD chip is set to a CC pin that continuously outputs a low level. A first working state, and when the processor determines that the type-c is connected to an external device, the PD chip is set to a second working state of a rectangular square wave in which a cc pin outputs high and low levels, so that the PD The chip recognizes the external device to ensure the normal operation of the type-c interface. The above solution can ensure that the type-c interface of the terminal device can be connected and recognize the normal operation of the external device. When the type-c connector is not connected to the external device, the CC pin continuously outputs a low level, thereby greatly reducing the CC. The voltage difference between the pin and the GND pin can further alleviate the situation that the CC pin is corroded after the type-c interface is wet or immersed in liquid, so as to optimize the type-c interface.

Due to the diversified use of terminal equipment by users, the above interface configuration method may cause misjudgment whether the type-c connector is connected to an external device. In order to reduce the situation of misjudgment, an example of an interface configuration is provided in the embodiment of this application. . In this example, the terminal device can reduce the misjudgment of the connection status of the type-c connector through a set fault tolerance mechanism. In this example, the processing module is an SOC, and the monitoring module includes a PMU and a voltage dividing circuit as an example. The voltage dividing circuit is a voltage dividing circuit as shown in FIG. 2. Referring to FIG. 7, the process of configuring an interface on this interface includes the following steps:

S701: After the terminal device is powered on, the SOC starts receiving interrupts from the charge management chip.

The charging management chip is used to manage the charging of the terminal device. When the type-c connector in the type-c interface of the terminal device is connected to a power supply device (for example, an adapter), the charging management chip sends an interrupt to the SOC to Notify the SOC to start the charging work to ensure the normal charging of the terminal device.

Optionally, the interrupt of the charge management chip may be a Vbus_dec_in interrupt. When the PMU has not only a power management function but also a charge management function, the charge management chip may be a PMU.

S702: The SOC sets the PD chip in the type-c interface of the terminal device to sink mode, shields the interruption of the PD chip, and sends a start monitoring message to the PMU to notify the PMU to separately monitor the voltage dividing circuit through two ADCs. The voltage changes of the two voltage-dividing devices in the device monitor whether the type-c connector is connected to an external device.

When the PMU determines that the voltage change of the at least one voltage dividing device exceeds a set voltage threshold, it indicates that the type-c connector is connected to an external device.

Optionally, the PMU can use the following methods to monitor the voltage change of a voltage-dividing device through any ADC:

The ADC samples the voltage of the voltage dividing device according to the set sampling period, and stores the collected voltage value in the PMU;

The PMU compares the newly sampled voltage value of the ADC with the voltage value of the last sample to determine the voltage change of the voltage-dividing device. Optionally, the PMU may store all voltage values of the voltage dividing device sampled by the ADC, or the PMU may save a set number of voltage values of the voltage dividing device sampled by the ADC, or the PMU may The voltage value of the voltage-dividing device is collected within a set duration (for example, 5s, 6s) that is closest to the current moment, which is not limited in this application.

S703: The SOC continues to determine whether an interruption to the charge management chip is received, and if so, executes S707, otherwise executes S704.

If the SOC receives the interruption of the charge management chip, which indicates that the type-c connector may be connected to a power supply device, the SOC needs to identify the type of the device through the PD chip to ensure the normal operation of the terminal device. If the SOC does not receive the interrupt from the charge management chip, the SOC does not need to change the mode of the PD chip. Instead, the PMU continues to monitor the voltage change of the voltage-dividing device until the SOC receives the PMU and sends it when it determines that the type-c connector is connected to an external device. First news.

S704: The SOC determines whether the first message of the PMU is received, and if yes, executes S707, otherwise executes S705.

If the SOC receives the first message, indicating that the type-c connector may be connected to a power supply device, the SOC needs to identify the type of the device through the PD chip to ensure the normal operation of the terminal device. If the SOC does not receive the first message, the SOC does not need to change the mode of the PD chip, but continues to monitor the voltage change of the voltage dividing device through the PMU.

S705: The SOC determines that the screen of the terminal device changes from a black screen to a bright screen (that is, the screen of the terminal device is woken up).

Because the screen of the terminal device can be awakened in various ways, for example, the terminal device receives notifications of text messages and various applications, the terminal device receives incoming calls, and the user of the terminal device wakes up the screen by touching the screen or function keys.

In practical applications, when the type-c connector of the terminal device is connected to an external device, there may be various reasons such as misidentification of the PMU or the phone change of the voltage-dividing device not exceeding the set voltage threshold. The message and / or the interruption of the charging management chip. In this case, the terminal device generally has no operation response, and the user of the terminal device wakes up the screen to determine the working condition of the terminal device.

Based on the above operation process, it can be determined that when the screen of the terminal device is awakened and the screen change is triggered by the user, there is a high possibility that the type-c connector is connected to the external device, so the SOC needs to execute S707. When the plane change is not triggered by the user, there is a large possibility that the type-c connector is not connected to an external device, and therefore, the SOC is required to continue to execute S703.

S706: The SOC judges whether the screen change is triggered by the user, if yes, executes S707, otherwise executes S703.

S707: The SOC sends a stop monitoring message to the PMU to notify the PMU to stop monitoring the voltage change of the two voltage-dividing devices in the voltage-dividing circuit through two ADCs; adjusting the PD chip from sink mode to toggle mode and starting reception PD chip interrupt.

Among them, the PD chip interrupt is sent when the PD chip detects that the type-c connector is connected to an external device.

S708: The SOC determines whether an interrupt of the PD chip is received, and if so, executes S709; otherwise, it indicates that the type-c connector is likely not connected to an external device, and the SOC is required to execute S702 to continue setting the PD chip to sink mode.

In the actual application of the terminal device, when the type-c connector is connected to an external device, the screen of the general terminal device remains bright for a period of time. Since the SOC can determine that the type-c connector has a higher probability of connecting to external devices through S703, S704, and S706, in order to avoid misjudgment due to PD chip failure and other reasons, when the SOC does not receive the PD chip interrupt, The SOC can also determine whether the execution of S702 needs to be postponed based on the display status of the screen: When the SOC determines that the screen of the current terminal device is bright, the SOC executes S702 after the first set time period (for example, 5s, or 10s, etc.); If it is determined that the screen of the current terminal device is a black screen, the SOC executes S702 immediately or after a second set duration. The second set duration is shorter than the first set duration.

S709: The SOC obtains the information of the external device from the PD chip to identify the type of the external device, thereby performing the normal work of the terminal device.

S710: When the SOC receives the second message sent by the PD chip, it returns to execute S702. The second message is sent after the PD chip determines that the type-c connector is not connected to an external device for a third set duration (for example, 10s) in the toggle mode. Therefore, in order to optimize the interface, the SOC needs to continue to The PD chip is set to sink mode.

Through the above example, the SOC in the terminal device can set the PD chip to sink mode when the type-c connector is not connected to an external device, and set the PD chip to toggle mode when it is determined that the type-c connector is connected to an external device. In this way, without affecting the normal operation of the terminal device, when the type-c connector is not connected to an external device, the CC pin in the PD chip continuously outputs a low level, thereby greatly reducing the CC pin and GND. The voltage difference between the pins can further alleviate the situation that the CC pin is corroded after the type-c interface is wet or immersed in liquid. In addition, in order to prevent the PMU and / or PD chip from accurately determining that the type-c connector is connected to an external device for various reasons, in this example, the SOC in S706 is also used to determine whether the screen is triggered by the user when the screen is woken up, and whether the SOC in S708 The terminal that received the PD chip and the SOC post-S708 postponed the execution of fault tolerance mechanisms such as S702 to reduce the misjudgment of the connection status of the type-c connector.

Based on the above embodiments, an embodiment of the present application further provides a computer program, which, when the computer program runs on a computer, causes the computer to execute the interface configuration method provided by the embodiment shown in FIG. 6 or FIG. 7.

Based on the above embodiments, an embodiment of the present application further provides a computer storage medium. The computer storage medium stores a computer program, and when the computer program is executed by the computer, the computer executes the embodiment shown in FIG. 6 or FIG. 7. Provided interface configuration methods.

Based on the above embodiments, an embodiment of the present application further provides a chip for reading a computer program stored in a memory to implement the interface configuration method provided by the embodiment shown in FIG. 6 or FIG. 7.

Based on the above embodiments, an embodiment of the present application provides a chip system including a processor, which is configured to support a computer device to implement functions related to the processor in FIG. 6 or the SOC in FIG. 7. In a possible design, the chip system further includes a memory, and the memory is configured to store programs and data necessary for the computer device. The chip system can be composed of chips, and can also include chips and other discrete devices.

In summary, the embodiments of the present application provide an interface configuration method, terminal device, and interface. In this solution, the processing module in the terminal device sets the PD chip when it determines that the type-c connector is not connected to an external device. It is the first working state where the CC pin continuously outputs a low level, and when the processing module monitors the type-c through the monitoring module to connect to an external device, the PD chip is set to output a rectangular square wave of high and low level on the cc pin. A second working state, so that the PD chip recognizes the external device, thereby ensuring normal work of the type-c interface. The above solution can ensure that the type-c interface of the terminal device can be connected and recognize the normal operation of the external device. When the type-c connector is not connected to the external device, the CC pin continuously outputs a low level, thereby greatly reducing the CC. The voltage difference between the pin and the GND pin can further alleviate the situation that the CC pin is corroded after the type-c interface is wet or immersed in liquid, so as to optimize the type-c interface.

Those skilled in the art should understand that the embodiments of the present application may be provided as a method, a system, or a computer program product. Therefore, this application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, this application may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

This application is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and combinations of processes and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, so that the instructions generated by the processor of the computer or other programmable data processing device are used to generate instructions Means for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to work in a particular manner such that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device, the instructions The device implements the functions specified in one or more flowcharts and / or one or more blocks of the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing device, so that a series of steps can be performed on the computer or other programmable device to produce a computer-implemented process, which can be executed on the computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the scope of the embodiments of the present application. In this way, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and variations.

Claims (25)

1. A terminal device includes a power output PD chip and a type-c connector, and a channel configuration CC pin in the PD chip is connected to the type-c connector, wherein the terminal device is also include:

   A processing module, configured to determine that the type-c connector is not connected to an external device, set the PD chip to a first working state, shield the interrupt of the PD chip, and send a monitoring start message to a monitoring module; The PD chip continuously outputs a low level under the first working state of the PD chip, and the startup monitoring message is used to notify the monitoring module to start monitoring whether the type-c connector is connected to an external device;

   The monitoring module is configured to start monitoring whether the type-c connector is connected to an external device after receiving the startup monitoring message, and to detect when the type-c connector is connected to an external device. The module sends a first message;

   The processing module is further configured to, after receiving the first message, adjust the PD chip from the first working state to a second working state, and start receiving an interrupt of the PD chip; The PD chip outputs a rectangular square wave of high and low levels at the CC pin in the second working state.
2. The terminal device according to claim 1, wherein the processing module is specifically configured to: when determining that the type-c connector is not connected to an external device:

   When the terminal device is powered on, determine that the type-c connector is not connected to an external device; or

   When receiving a second message sent by the PD chip, determining that the type-c connector is not connected to an external device; wherein the second message is that the PD chip determines the second chip in the second working state The type-c connector is sent after the external device is not connected for a set period of time.
3. The terminal device according to claim 1 or 2, wherein the monitoring module includes a voltage dividing circuit and a monitoring chip; wherein the voltage dividing circuit provides a fixed voltage and is separately connected to the PD through a voltage dividing device. The CC pin of the chip is connected to the type-c connector;

   The monitoring chip is specifically used for:

   Monitoring a voltage change of the voltage dividing device;

   Determining that the type-c connector is connected to an external device when the voltage change of the voltage-dividing device exceeds a set voltage threshold;

   Sending the first message to the processing module.
4. The terminal device according to any one of claims 1 to 3, wherein

   When the processing module sets the PD chip to the first working state, the processing module is specifically configured to:

   Sending a third message to the PD chip, where the third message is used to notify the PD chip to adjust a working state to the first working state;

   The processing module, when adjusting the PD chip from the first working state to the second working state, is specifically configured to:

   Sending a fourth message to the PD chip, where the fourth message is used to notify the PD chip to adjust a working state to the second working state.
5. The terminal device according to any one of claims 1-4, wherein the processing module is further configured to:

   After receiving the first message, sending a stop monitoring message to the monitoring module, the stop monitoring message is used to notify the monitoring module to stop monitoring whether the type-c connector is connected to an external device;

   The monitoring module is further configured to stop monitoring whether the type-c connector is connected to an external device after receiving the stop monitoring message.
6. The terminal device according to any one of claims 1-5, wherein the processing module and the PD chip communicate with each other through an internal integrated circuit (I2C) bus.
7. The terminal device according to any one of claims 1-6, wherein the processing module and the monitoring module communicate with each other through a synchronous serial interface SSI.
8. A terminal device includes a power output PD chip and a type-c connector, and a channel configuration CC pin in the PD chip is connected to the type-c connector, wherein the terminal device is also include:

   Memory for storing programs;

   A processor, configured to read a program stored in the memory and execute:

   When it is determined that the type-c connector is not connected to an external device, set the PD chip to a first working state, shield the interruption of the PD chip, and start monitoring whether the type-c connector is connected to an external device; Wherein, the PD chip continuously outputs a low level under the first working state of the PD chip;

   When determining that the type-c connector is connected to an external device, adjust the PD chip from the first working state to the second working state, and start receiving an interrupt of the PD chip; wherein the PD chip is in In the second working state, the CC pin outputs a rectangular square wave of high and low levels.
9. The terminal device according to claim 8, wherein the processor is specifically configured to: when determining that the type-c connector is not connected to an external device:

   When the terminal device is powered on, determine that the type-c connector is not connected to an external device; or

   When the first message sent by the PD chip is received, it is determined that the type-c connector is not connected to an external device; wherein the first message is that the PD chip determines that the PD chip is in the second working state; The type-c connector is sent after the external device is not connected for a set period of time.
10. The terminal device according to claim 8 or 9, wherein the terminal device further comprises a voltage dividing circuit, the voltage dividing circuit provides a fixed voltage, and is separately connected to the PD chip through the voltage dividing device. The CC pin is connected to the type-c connector;

    The processor, when monitoring whether the type-c connector is connected to an external device, is specifically configured to:

    Monitoring a voltage change of the voltage dividing device;

    When a voltage change of the voltage dividing device is monitored to exceed a set voltage threshold, it is determined that the type-c connector is connected to an external device.
11. The terminal device according to any one of claims 8 to 10, wherein

    When the processor sets the PD chip to the first working state, the processor is specifically configured to:

    Sending a second message to the PD chip, where the second message is used to notify the PD chip to adjust a working state to the first working state;

    When the processor adjusts the PD chip from the first working state to the second working state, the processor is specifically configured to:

    Sending a third message to the PD chip, where the third message is used to notify the PD chip to adjust a working state to the second working state.
12. The terminal device according to any one of claims 8-11, wherein the processor is further configured to:

    After determining that the type-c connector is connected to an external device, stop monitoring whether the type-c connector is connected to an external device.
13. The terminal device according to any one of claims 8 to 12, wherein the processor and the PD chip communicate with each other through an internal integrated circuit (I2C) bus.
14. An interface includes a power output PD chip and a type-c connector, and a channel configuration CC pin in the PD chip is connected to the type-c connector, wherein the PD chip is used for :

    When receiving the first message sent by the processor in the terminal device, adjusting the working state of the PD chip to the first working state; wherein the first message is used to notify the PD chip to adjust the working state to The first working state; the PD chip continuously outputs a low level under the first working state; the connecting component is connected to the PD chip;

    Upon receiving a second message sent by the processor, adjusting the working state of the PD chip to a second working state; wherein the second message is used to notify the PD chip to adjust the working state to the A second working state; in the second working state, the CC pin outputs a rectangular square wave of high and low levels.
15. The interface according to claim 14, wherein the PD chip is further configured to:

    In the second working state, determine that the type-c connector is not connected to an external device for a set duration, and send a third message to the processor, where the third message is used to notify the type- cThe external device is not connected.
16. The interface according to claim 14 or 15, wherein the PD chip and the processor communicate with each other through an internal integrated circuit (I2C) bus.
17. An interface configuration method applied to a processor in a terminal device, wherein the terminal device includes a power output PD chip and a type-c connector, and a channel configuration CC pin in the PD chip is connected to the type -c connector, characterized in that the method includes:

    When the processor determines that the type-c connector is not connected to an external device, the processor sets the PD chip to a first working state, shields the interrupt of the PD chip, and starts monitoring whether the type-c connector is Connected to an external device; wherein the PD chip continuously outputs a low level under the first working state of the PD chip;

    When determining that the type-c connector is connected to an external device, the processor adjusts the PD chip from the first working state to a second working state, and starts receiving an interrupt of the PD chip; the PD The CC pin outputs a rectangular square wave of high and low levels in the second working state of the chip.
18. The method according to claim 17, wherein the processor determining that the type-c connector is not connected to an external device comprises:

    The processor determines that the type-c connector is not connected to an external device when the terminal device is powered on; or

    When receiving the first message sent by the PD chip, the processor determines that the type-c connector is not connected to an external device; wherein the first message is that the PD chip is in the second working state. It is determined that the type-c connector is sent after an external device is not connected for a set duration.
19. The method according to claim 17 or 18, wherein the terminal device further comprises a voltage dividing circuit, the voltage dividing circuit provides a fixed voltage, and is separately connected to the CC of the PD chip through a voltage dividing device. The pin is connected to the type-c connector;

    The processor monitoring whether the type-c connector is connected to an external device includes:

    The processor monitors a voltage change of the voltage dividing device;

    When it is detected that the voltage change of the voltage dividing device exceeds a set voltage threshold, the processor determines that the type-c connector is connected to an external device.
20. The method according to any one of claims 17 to 19, wherein:

    The setting, by the processor, the PD chip to the first working state includes:

    Sending, by the processor, a second message to the PD chip, the second message is used to notify the PD chip to adjust a working state to the first working state;

    The adjusting, by the processor, the PD chip from the first working state to the second working state includes:

    The processor sends a third message to the PD chip, and the third message is used to notify the PD chip to adjust a working state to the second working state.
21. The method according to any one of claims 17-20, wherein after the processor determines that the type-c connector is connected to an external device, the method further comprises:

    The processor stops monitoring whether the type-c connector is connected to an external device.
22. The method according to any one of claims 17 to 21, wherein the processor and the PD chip communicate with each other through an internal integrated circuit (I2C) bus.
23. A computer program, wherein when the computer program is run on a computer, the computer is caused to execute the method according to any one of claims 17-22.
24. A computer storage medium, characterized in that a computer program is stored in the computer storage medium, and when the computer program is executed by a computer, the computer is caused to execute the method according to any one of claims 17-22.
25. A chip, wherein the chip is used to read a computer program stored in a memory and execute the method according to any one of claims 17-22.

Images