CN106055062A - Charging management method of USB interface, and electronic device - Google Patents
Charging management method of USB interface, and electronic device Download PDFInfo
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- CN106055062A CN106055062A CN201610354118.3A CN201610354118A CN106055062A CN 106055062 A CN106055062 A CN 106055062A CN 201610354118 A CN201610354118 A CN 201610354118A CN 106055062 A CN106055062 A CN 106055062A
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- usb
- pin
- charging management
- management chip
- usb interface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The present invention discloses a charging management method of a USB interface, and an electronic device. The method comprises that a micro control unit MCU of the electronic device detects level status of a USB_ID pin and a USB_ON pin of the USB interface of the electronic device, when the level status of the USB_ID pin or the USB_ON pin are detected to be changed, the MCU transmits a corresponding control instruction to reconfigure an operating mode of a charging management chip of the electronic device, so that the charging management chip controls the USB interface to output corresponding voltage or input corresponding current. According to the technical scheme, the USB interface is controlled to output the corresponding voltage or input the corresponding current according to different scenes of USB interface application, performance of the electronic device is improved, and user experience is optimized.
Description
Technical field
The present invention relates to technical field of electronic equipment, be specifically related to the Charge Management of a kind of general-purpose serial bus USB interface
Method and electronic equipment.
Background technology
At present, a lot of electronic equipments are equipped with the USB interface of standard, have been used for that charging, information is mutual and OTG
(On-The-Go).When USB interface connects different USB device (e.g., USB charging adapter, computer), the power supply to USB interface
There is corresponding requirement.Such as, when connecting charging adapter, big electric current is needed to be charged input；Connect computer or other are upper
During machine, need to limit low current charge input, and activate USB communication function；When connecting OTG equipment, need externally to provide direct current
Power supply；Need under vacant state to close power supply output etc..But, in prior art, the USB also connected not according to USB interface
The scheme that the power supply of USB interface is managed by the change of equipment, Consumer's Experience is the best.
Summary of the invention
The invention provides charging management method and the electronic equipment of a kind of USB interface, with solve prior art can not
The power supply of USB interface is managed by the change of USB device, the problem that Consumer's Experience is the best.
According to an aspect of the invention, it is provided the charging management method of a kind of USB interface, it is applied to electronic equipment
In, the method includes:
The USB_ID pin of the USB interface of the micro-control unit MCU detecting electronic equipment of electronic equipment and USB_ON pin
Level state,
Level state change according to the USB_ID pin detected or USB_ON pin, MCU sends corresponding control and refers to
Make to charging management chip, control charging management chip and export corresponding voltage through USB interface or allow the corresponding electricity of input
Stream.
Alternatively, the original state of the USB_ID pin of USB interface is high level, and the original state of USB_ON pin is low
Level, now USB interface is vacant state, and MCU does not send control instruction to the charging management chip of electronic equipment；
When the level of USB_ID pin is pulled low, MCU sends control instruction to charging management chip, control Charge Management
Chip produces 5V DC source and through USB interface supplying power for outside；
When the level of USB_ON pin is driven high, MCU sends control instruction to charging management chip, control Charge Management
Chip allows input small area analysis through USB interface to its low current charge；
When USB_ON pin is unsettled with the level of USB_ID pin all the time and keeps consistent, MCU send control instruction to
Charging management chip, controls charging management chip and allows to input big electric current USB interface to its large current charge.
Alternatively, be connected by I2C bus between MCU with charging management chip, MCU through I2C bus to Charge Management core
Sheet sends control instruction.
Alternatively, the USB_ID pin of USB interface of the micro-control unit MCU detecting electronic equipment of electronic equipment and USB_
The level state of ON pin includes:
The two of which input and output I/O mouth of MCU is connected with USB_ID pin and USB_ON pin respectively,
MCU detects USB_ID pin and the level state of USB_ON pin by two I/O mouths of detecting.
Alternatively, MCU detects two I/O mouths with external interrupt or polling mode.
According to another aspect of the present invention, it is provided that a kind of electronic equipment, including micro-control unit MCU, general serial
Bus USB interface and charging management chip, MCU connects USB interface and charging management chip respectively,
The USB_ID pin of MCU detecting USB interface and the level state of USB_ON pin,
Level state change according to the USB_ID pin detected or USB_ON pin, MCU sends corresponding control and refers to
Make to charging management chip, control charging management chip and export corresponding voltage through USB interface or allow the corresponding electricity of input
Stream.
Alternatively, the original state of the USB_ID pin of USB interface is high level, and the original state of USB_ON pin is low
Level, now USB interface is vacant state, and MCU does not send control instruction to the charging management chip of electronic equipment；
When the level of USB_ID pin is pulled low, MCU sends control instruction to charging management chip, control Charge Management
Chip produces 5V DC source through USB interface supplying power for outside；
When the level of USB_ON pin is driven high, MCU sends control instruction to charging management chip, control Charge Management
Chip allows input small area analysis through USB interface to its low current charge；
When USB_ON pin is unsettled with the level of USB_ID pin all the time and keeps consistent, MCU send control instruction to
Charging management chip, controls charging management chip and allows to input big electric current through USB interface to its large current charge.
Alternatively, be connected by I2C bus between MCU with charging management chip, MCU through I2C bus to Charge Management core
Sheet sends control instruction.
Alternatively, the two of which input and output I/O mouth of the MCU of electronic equipment draws with USB_ID pin and USB_ON respectively
Foot connects,
MCU detects USB_ID pin and the level state of USB_ON pin by two I/O mouths of detecting.
Alternatively, the MCU of electronic equipment detects two I/O mouths with external interrupt or polling mode.
The invention has the beneficial effects as follows: the charging management method of this USB interface of the present invention, connect by MCU detecting USB
The USB_ID pin of mouth or the level state of USB_ON pin, and send corresponding control instruction to filling according to level state change
Electricity managing chip, controls charging management chip and exports corresponding voltage through USB interface or allow to input corresponding electric current, thus
When the USB interface of electronic equipment inserts different USB devices, due to USB_ID pin and the level meeting of described USB_ON pin
It is pulled low accordingly according to different insertion equipment or is driven high, it is achieved thereby that use the difference of scene according to USB interface, adaptive
Complete the configuration of the input/output state to USB interface with answering, be greatly improved performance and the Consumer's Experience of product.
Accompanying drawing explanation
Fig. 1 is the flow chart of the charging management method of a kind of USB interface of one embodiment of the invention；
Fig. 2 is the structured flowchart of a kind of electronic equipment of one embodiment of the invention.
Detailed description of the invention
The design concept of the present invention is: can not be according to the application scenarios pair of USB interface for electronic equipment in prior art
The power supply of USB interface carries out the problem of corresponding management, is detected USB_ID pin and the USB_ON pin of USB interface by MCU,
And arrange and send control instruction after corresponding logical relation to charging management chip, thus control charging management chip according to USB
The difference of the USB device that interface is connected, controls USB interface and exports corresponding voltage and input corresponding electric current, so, not
Complete the configuration of the input/output state to USB interface under same scene adaptively, thus save system power dissipation, improve electricity
The performance of subset, optimizes Consumer's Experience.
Fig. 1 is the flow chart of the charging management method of a kind of USB interface of one embodiment of the invention, this USB interface
Charging management method is applied in electronic equipment, sees Fig. 1, and the method for the present embodiment includes:
Step S101, electronic equipment micro-control unit MCU detecting electronic equipment USB interface USB_ID pin and
The level state of USB_ON pin,
Step S102, changes according to the level state of the USB_ID pin detected or USB_ON pin, and MCU sends corresponding
Control instruction to charging management chip, control charging management chip and export corresponding voltage through USB interface or allow input
Corresponding electric current.
By the method shown in Fig. 1, USB_ID pin and the USB_ON pin of USB interface are carried out by the present embodiment by MCU
Detecting, when the level state of one of them in two pins changes, MCU sends control instruction to Charge Management core
Sheet, reconfigures the mode of operation of charging management chip, so that charging management chip connects according to the USB interface of electronic equipment
The difference of the USB device connect, controls USB interface and exports corresponding voltage and input corresponding electric current, it is achieved that according to USB interface
The difference of application scenarios, the beneficial effect that the power supply input and output of USB interface are adjusted.
Such as, when USB interface connects USB charging adapter, it is allowed to the big electric current of USB interface is charged input, thus
Charging work can be rapidly completed；When connecting computer or other main equipments, it is allowed to low current charge inputs, and activates USB communication
Function, mutual to carry out data transmission, and save power consumption；When connecting OTG equipment, controlling USB interface externally provides voltage；USB
Interface is under vacant state closedown power supply output, protects electronic equipment.
In the present embodiment, the original state of the USB_ID pin of USB interface is high level, the initial shape of USB_ON pin
State is low level, and now USB interface is vacant state, and MCU does not send control instruction to the charging management chip of electronic equipment；
Step S102 specifically includes: when the level of USB_ID pin is pulled low, and MCU sends control instruction to Charge Management
Chip, controls charging management chip and produces 5V DC source through USB interface supplying power for outside；
Here 5V voltage is an empirical value, and corresponding scene is probably the USB of electronic equipment and inserts a USB from setting
Standby, now electronic equipment can be as USB main equipment, then electronic equipment output voltage is the direct current 5V voltage of standard, exports electric current
It is usually more than 500 milliamperes.
When the level of USB_ON pin is driven high, MCU sends control instruction to charging management chip, control Charge Management
Chip allows input small area analysis through USB interface to its low current charge；Under this scene, what USB interface may connect is one
USB main equipment (such as PC), is mainly used in and carries out carrying out data transmission between electronic equipment and PC, so not
Need big electric current.
When USB_ON pin is unsettled with the level of USB_ID pin all the time and keeps consistent, MCU send control instruction to
Charging management chip, controls charging management chip and allows to input big electric current through USB interface to its large current charge.This scene
Under, what USB interface may access is charging adapter, so that control USB interface can input big electric current, it is ensured that quickly fill
Electricity.
In the present embodiment, be connected by I2C bus between MCU with charging management chip, MCU through I2C bus to charging valve
Reason chip sends control instruction.
In an embodiment, step S101 specifically includes: MCU detects USB_ID pin and USB_ by detecting I/O mouth
The level state of ON pin, I/O mouth here refers to what the USB_ID pin with USB interface of MCU and USB_ON pin were connected
Two I/O with USB_ID pins on MCU and USB_ON pin, during actual application, can be connected one to one by I/O mouth, this
Sample is when the level state of USB_ID pin and USB_ON pin changes, by the I/O of self, MCU i.e. would know that this level becomes
Change.
And, it is preferable that MCU detects the two I/O by the way of external interrupt, uses the mode phase of external interrupt
More higher than polling mode real-time, thus apply in the application scenario high to requirement of real-time.
Fig. 2 is the structured flowchart of a kind of electronic equipment of one embodiment of the invention, sees Fig. 2, and this electronic equipment 20 wraps
Including: micro-control unit MCU201, USB interface 202 and charging management chip 203, MCU201 connects USB interface 202 respectively and fills
Electricity managing chip 203,
The USB_ID pin of MCU201 detecting USB interface 202 and the level state of USB_ON pin,
Level state change according to the USB_ID pin detected or USB_ON pin, MCU201 sends corresponding control
Instruction reconfigures the mode of operation of charging management chip 203, controls charging management chip 203 and exports accordingly through USB interface 202
Voltage or allow input corresponding electric current.
In the present embodiment, the original state of the USB_ID pin of USB interface 202 is high level, USB_ON pin initial
State is low level, and now USB interface 202 is vacant state, and MCU201 does not send control instruction to the charging valve of electronic equipment
Reason chip 203；
When the level of USB_ID pin is pulled low, MCU201 transmission control instruction, to charging management chip 203, controls to fill
Electricity managing chip 203 produces 5V DC source and exports through USB interface 202；
When the level of USB_ON pin is driven high, MCU201 transmission control instruction, to charging management chip 203, controls to fill
Electricity managing chip 203 allows input small area analysis and through USB interface 202 to its low current charge；
When USB_ON pin is unsettled with the level of USB_ID pin all the time and keeps consistent, MCU201 sends control instruction
To charging management chip 203, control charging management chip 203 and allow input big electric current and through USB interface 202, its big electric current filled
Electricity.
In the present embodiment, the two of which input and output I/O mouth of MCU201 respectively with USB_ID pin and USB_ON pin
Connecting, MCU201 detects the USB_ID pin of USB interface 202 and the level shape of USB_ON pin by two I/O mouths of detecting
State.
In the present embodiment, MCU201 detects I/O mouth with external interrupt or polling mode.
The work process of the electronic equipment of the present embodiment is illustrated by following emphasis.
In the present embodiment, the MCU of electronic equipment uses USB_ID and USB_ON port to enter the insert state of USB port respectively
Row detecting, and arrange corresponding logical relation.When USB_ID is defaulted as high level, and USB_ON is defaulted as low level, now USB end
Mouth is vacant state, and input current is not configured by port not output voltage.
Saltus step is there is when USB_ID or USB_ON level, according to different hop value and the logical relation of arrangement, right
USB interface state is done and is controlled as follows:
If USB_ID foot position is pulled low, when i.e. accessing OTG equipment, MCU by I2C bus configuration charging management chip is
BOOST pattern, produces 5V DC source, powers external USB device.
If USB_ON foot position is driven high, i.e. during access host equipment, MCU is taken by I2C bus configuration charging management chip
Disappear BOOST pattern, closes power supply output and prevents electric current from pouring in down a chimney, it is allowed to small area analysis input charging.
When MCU detects that USB_ON is unsettled with the level of USB_ID position all the time and keeps consistent, access USB i.e. detected
During charging adapter, MCU allows large current charge by I2C bus configuration charging management chip.
In the present embodiment, MCU be model be the microcontroller of STM32, and MCU use external interrupt mode to I/O
The state of mouth detects, it is ensured that the real-time controlling USB interface.
But it is understood that in other embodiments of the invention, MCU can also be by the shape of polling mode detecting I/O mouth
State, is not restricted this.
It should be noted that the work process of the electronic equipment in the present embodiment is and the Charge Management of aforementioned USB interface
In method to realize step corresponding, thus the part not described the work process of electronic equipment in the present embodiment is permissible
See the related description of present invention, repeat no more here.
In sum, the charging management method of this USB interface of the embodiment of the present invention, by MCU detecting USB interface
USB_ID pin or the level state of USB_ON pin, and send corresponding control instruction to charging valve according to level state change
Reason chip, controls charging management chip and exports corresponding voltage through USB interface or allow to input corresponding electric current, thus when electricity
When the USB interface of subset inserts different USB devices, owing to the level of USB_ID pin and described USB_ON pin can basis
Different insertion equipment is pulled low accordingly or is driven high, it is achieved thereby that use the difference of scene according to USB interface, adaptively
Complete the configuration of the input/output state to USB interface, be greatly improved performance and the Consumer's Experience of product.It addition, the present invention carries
For electronic equipment the power supply of USB interface can be managed according to the difference of USB interface scene, thus has more
The suitability well, improves the competitiveness of product, saves power consumption.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.All
Any modification, equivalent substitution and improvement etc. made within the spirit and principles in the present invention, are all contained in protection scope of the present invention
In.
Claims (10)
1. a charging management method for USB interface, is applied in electronic equipment, it is characterised in that the method includes:
The USB_ID pin of the USB interface of the micro-control unit MCU detecting electronic equipment of described electronic equipment and USB_ON pin
Level state,
Level state change according to the described USB_ID pin detected or described USB_ON pin, described MCU sends corresponding
Control instruction give described electronic equipment charging management chip, control described charging management chip and export through described USB interface
Corresponding voltage or permission input corresponding electric current.
Method the most according to claim 1, it is characterised in that the original state of the USB_ID pin of described USB interface is
High level, the original state of USB_ON pin is low level, and now USB interface is vacant state, and described MCU does not send control and refers to
Make to the charging management chip of described electronic equipment；
When the level of described USB_ID pin is pulled low, described MCU sends control instruction to described charging management chip, control
Described charging management chip produces 5V DC source through described USB interface supplying power for outside；
When the level of described USB_ON pin is driven high, described MCU sends control instruction to described charging management chip, control
Described charging management chip allows input small area analysis through described USB interface to its low current charge；
When described USB_ON pin is unsettled with the level of USB_ID pin all the time and keeps consistent, described MCU sends control and refers to
Order, to described charging management chip, controls described charging management chip and allows to input big electric current through described USB interface to its big electricity
Current charge.
Method the most according to claim 2, it is characterised in that pass through I2C between described MCU and described charging management chip
Bus connects, and described MCU sends control instruction through described I2C bus to described charging management chip.
4. according to the method according to any one of claim 1-3, it is characterised in that the micro-control unit of described electronic equipment
The USB_ID pin of USB interface and the level state of USB_ON pin of MCU detecting electronic equipment include:
The two of which input and output I/O mouth of described MCU is connected with described USB_ID pin and described USB_ON pin respectively,
Described MCU detects described USB_ID pin and the level of described USB_ON pin by two described I/O mouths of detecting
State.
Method the most according to claim 4, it is characterised in that described MCU detects two with external interrupt or polling mode
Described I/O mouth.
6. an electronic equipment, including: micro-control unit MCU, general-purpose serial bus USB interface and charging management chip, described
MCU connects described USB interface and described charging management chip respectively, it is characterised in that
Described MCU detects USB_ID pin and the level state of USB_ON pin of described USB interface,
Level state according to the described USB_ID pin detected or described USB_ON pin changes, and described MCU sends
Corresponding control instruction gives described charging management chip, controls described charging management chip corresponding through the output of described USB interface
Voltage or permission input corresponding electric current.
Electronic equipment the most according to claim 6, it is characterised in that the initial shape of the USB_ID pin of described USB interface
State is high level, and the original state of USB_ON pin is low level, and now USB interface is vacant state, and described MCU does not send control
System instruction is to the charging management chip of described electronic equipment；
When the level of described USB_ID pin is pulled low, described MCU sends control instruction to described charging management chip, control
Described charging management chip produces 5V DC source through described USB interface supplying power for outside；
When the level of described USB_ON pin is driven high, described MCU sends control instruction to described charging management chip, control
Described charging management chip allows input small area analysis through described USB interface to its low current charge；
When described USB_ON pin is unsettled with the level of USB_ID pin all the time and keeps consistent, described MCU sends control and refers to
Order, to described charging management chip, controls described charging management chip and allows to input big electric current through described USB interface to its big electricity
Current charge.
Electronic equipment the most according to claim 6, it is characterised in that logical between described MCU and described charging management chip
Crossing I2C bus to connect, described MCU sends control instruction through described I2C bus to described charging management chip.
Electronic equipment the most according to claim 8, it is characterised in that the two of which input of the MCU of described electronic equipment
Output I/O mouth is connected with described USB_ID pin and described USB_ON pin respectively,
Described MCU detects described USB_ID pin and the level shape of described USB_ON pin by two described I/O mouths of detecting
State.
10. according to the electronic equipment according to any one of claim 6-9, it is characterised in that beyond the MCU of described electronic equipment
Portion interrupts or polling mode two described I/O mouths of detecting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610354118.3A CN106055062B (en) | 2016-05-25 | 2016-05-25 | A kind of charging management method and electronic equipment of USB interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610354118.3A CN106055062B (en) | 2016-05-25 | 2016-05-25 | A kind of charging management method and electronic equipment of USB interface |
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| Publication Number | Publication Date |
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| CN106055062A true CN106055062A (en) | 2016-10-26 |
| CN106055062B CN106055062B (en) | 2019-02-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110347438A (en) * | 2019-07-16 | 2019-10-18 | Oppo广东移动通信有限公司 | Function selection method, function selection device and mobile terminal |
| CN111064243A (en) * | 2019-12-12 | 2020-04-24 | 优奈柯恩(北京)科技有限公司 | Mobile power supply and method for supplying power to peripheral equipment |
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| Publication number | Publication date |
|---|---|
| CN106055062B (en) | 2019-02-12 |
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