CN106776400B - Electronic equipment and circuit thereof, switching equipment and circuit thereof and signal control system - Google Patents
Electronic equipment and circuit thereof, switching equipment and circuit thereof and signal control system Download PDFInfo
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- CN106776400B CN106776400B CN201611155930.XA CN201611155930A CN106776400B CN 106776400 B CN106776400 B CN 106776400B CN 201611155930 A CN201611155930 A CN 201611155930A CN 106776400 B CN106776400 B CN 106776400B
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- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims 1
- 238000000034 method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 14
- 230000001960 triggered effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
- G06F13/22—Handling requests for interconnection or transfer for access to input/output bus using successive scanning, e.g. polling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/3041—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system component is an input/output interface
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Abstract
The invention provides electronic equipment and a circuit thereof, switching equipment and a circuit thereof and a signal control system, and belongs to the technical field of electronic equipment. The circuit of the electronic device includes: the electronic device comprises a detection circuit and a central processing unit CPU, wherein the CPU is provided with a general purpose input/output interface GPIO, the detection circuit is respectively connected with a physical interface of the electronic device and the CPU, and the detection circuit is used for outputting a first voltage signal to the GPIO when detecting that voltage signals output by a first port and a second port of the physical interface are both first voltage signals so as to start a downloading mode of the electronic device. The electronic equipment, the circuit thereof, the switching equipment, the circuit thereof and the signal control system provided by the invention improve the accuracy of starting the downloading mode of the electronic equipment.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to an electronic device, a circuit thereof, a switching device, a circuit thereof, and a signal control system.
Background
With the continuous development of technology, electronic devices have entered into lives of people and become a vital part of lives of people.
In the prior art, in order to reduce the thickness of the mobile phone, most mobile phones adopt a rear shell with a built-in battery and a non-detachable integrated design. For such a mobile phone of one-piece design, when it is put into the download mode, it is common for software to define two volume keys as the judgment conditions for entering the download mode. The method comprises the following steps: when the mobile phone is in a power-off state, the two volume keys are pressed, a universal serial bus (Universal Serial Bus, USB) power line is inserted at the same time, the mobile phone is started and initialized under the triggering of the USB power line, the starting software is started from a stage of a main boot loader (Primary Bootloader, PBL) inherent to a mobile phone central processing unit (Central Processing Unit, CPU), then the mobile phone is jumped to a secondary boot loader (secondary bootloader, SBL) in a software version, the SBL is used for self-defining and judging whether the two volume keys are pressed at the same time, if yes, the software flow jumps to a downloading port state of the mobile phone to download the software version, and if no, the normal mobile phone starting procedure is executed to start the mobile phone. Because the software flow for judging whether the volume key is pressed is defined in the SBL, when the software cannot normally jump to the SBL or the SBL is destroyed and cannot be judged, the download mode cannot be normally entered, and meanwhile, the risk that a user mistakenly triggers two volume keys to enable the mobile phone to carry out the download mode exists.
Therefore, the existing download mode starting mode is adopted, so that the accuracy of the download mode starting is not high.
Disclosure of Invention
The invention provides electronic equipment and a circuit thereof, switching equipment and a circuit thereof and a signal control system, so as to improve the starting accuracy of a downloading mode of the electronic equipment.
An embodiment of the present invention provides a circuit of an electronic device, including:
the electronic device comprises a detection circuit and a central processing unit CPU, wherein the CPU is provided with a GPIO, the detection circuit is respectively connected with a physical interface of the electronic device and the CPU, and the detection circuit is used for outputting a first voltage signal to the GPIO when detecting that voltage signals output by a first port and a second port of the physical interface are both first voltage signals so as to start a downloading mode of the electronic device.
In an embodiment of the present invention, the first port is a first SBU port, and the second port is a second SBU port.
In an embodiment of the invention, the detection circuit is an and gate.
The embodiment of the invention also provides a circuit of the switching device, which comprises:
a power line, a first auxiliary signal line, a second auxiliary signal line, and a voltage divider circuit; the power line is connected with the first auxiliary signal line and the second auxiliary signal line respectively through the voltage divider circuit, and the voltage divider circuit is used for performing voltage division processing on a preset voltage signal on the power line and inputting a first voltage signal obtained by voltage division into the first auxiliary signal line and the second auxiliary signal line.
In an embodiment of the present invention, the voltage dividing circuit includes a first resistor, a second resistor, a third resistor, and a fourth resistor, where a first end of the first resistor is connected to the power line, a second end of the first resistor is connected to the first auxiliary signal line and a first end of the second resistor, a second end of the second resistor is connected to a first end of the fourth resistor, a second end of the fourth resistor is connected to a first end of the third resistor and the second auxiliary signal line, and a second end of the third resistor is connected to the power line.
In an embodiment of the present invention, a resistance ratio of the first resistor to the second resistor is 3:2; and the resistance ratio of the third resistor to the fourth resistor is 3:2.
In an embodiment of the present invention, the first auxiliary signal line is a first SBU signal line, and the second auxiliary signal line is a second SBU signal line.
In an embodiment of the present invention, further includes:
and the second end of the second resistor is connected with the GND line, and the first end of the fourth resistor is connected with the GND line.
The embodiment of the invention also provides electronic equipment, which comprises:
a physical interface and circuitry of an electronic device as described in any of the embodiments above;
the first end of the physical interface is connected with the circuit of the electronic device through a first auxiliary signal line, the second end of the physical interface is connected with the circuit of the electronic device through a second auxiliary signal line, and the circuit of the electronic device is used for starting a downloading mode of the electronic device when detecting that voltage signals output by the physical interface through the first auxiliary signal line and the second auxiliary signal line are both first voltage signals.
The embodiment of the invention also provides a switching device, which comprises: the circuitry of the switching device of any of the embodiments described above.
The embodiment of the invention also provides a signal control system which comprises the electronic equipment and the switching equipment.
According to the circuit, the switching device and the circuit and the signal control system of the electronic device, the first SBU port and the second SBU port in the physical interface of the electronic device are connected with the detection circuit, the voltage signals are input to the detection circuit through the first SBU port and the second SBU port, when the detection circuit detects that the voltage signals output by the first SBU port and the second SBU port are both the first voltage signals, the 1.8V first voltage signal is output to the GPIO, so that the GPIO can start the downloading mode of the electronic device in the process of starting the power-on of the mobile phone according to the first voltage signal, the downloading task is executed, and the starting accuracy of the downloading mode is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic structural diagram of a circuit of an electronic device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a circuit of a switching device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a circuit of another switching device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of connection between a physical interface and a circuit of an electronic device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a switching device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a signal control system according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 1 is a schematic structural diagram of a circuit 10 of an electronic device according to an embodiment of the present invention, and the electronic device 10 is exemplified as being applied to a case where the electronic device is triggered to start up, and the electronic device may be a mobile phone, a tablet computer, or other electronic devices in the process of starting up the electronic device. Referring to fig. 1, a circuit 10 of the electronic device includes:
the detection circuit 101 and the central processing unit CPU102, the CPU102 has a general purpose input output interface 1021 (General Purpose Input Output, simply referred to as GPIO), the detection circuit 101 is respectively connected with the physical interface of the electronic device and the CPU102, and the detection circuit 101 is configured to output the first voltage signal to the GPIO1021 when detecting that the voltage signals output by the first port and the second port of the physical interface are both the first voltage signals, so as to start the download mode of the electronic device.
The first voltage signal may be a voltage signal of 1.8V or a voltage signal of 1.9V, or may be a high-level signal of other voltage values, which is only described by taking a voltage signal of 1.8V as an example, but the present invention is not limited thereto.
Optionally, the first port is a first SBU port, and the second port is a second SBU port, which may be specifically set according to actual needs, where the present invention is not limited further. The embodiment of the invention can be realized by multiplexing the original first SBU port and the second SBU port without any improvement on a physical interface.
Alternatively, the detection circuit 101 is an and gate, however, other detection circuits 101 may be used, and the embodiment of the present invention is only described by taking the detection circuit 101 as an and gate, but the present invention is not limited thereto.
In the practical application process, the physical interface of the electronic device may have a plurality of input ports and output ports, where a first SBU port and a second SBU port in the physical interface of the electronic device are connected with an and gate, specifically: the first SBU port in the physical interface of the electronic equipment can be connected with the AND gate through the first SBU signal line, the second SBU port can be connected with the AND gate through the second SBU signal line, after connection with the AND gate is established, voltage signals can be input to the AND gate through the first SBU port and the second SBU port, when the AND gate detects that the voltage signals output by the first SBU port and the second SBU port are both 1.8V voltage signals, the 1.8V voltage signals are output to the GPIO1021, so that the GPIO1021 can start a downloading mode of the electronic equipment in the process of starting the power-on of the mobile phone according to the 1.8V voltage signals, and therefore the starting accuracy of the downloading mode of the electronic equipment is improved.
According to the circuit 10 of the electronic device, the first SBU port and the second SBU port in the physical interface of the electronic device are connected with the detection circuit 101, and the voltage signals are input to the detection circuit 101 through the first SBU port and the second SBU port, when the detection circuit 101 detects that the voltage signals output by the first SBU port and the second SBU port are both the first voltage signals, the 1.8V first voltage signals are output to the GPIO1021, so that the GPIO1021 can start the downloading mode of the electronic device in the process of starting the power-on of the mobile phone according to the first voltage signals, and the downloading task is executed, so that the starting accuracy of the downloading mode of the electronic device is improved.
Fig. 2 is a schematic structural diagram of a circuit 20 of a switching device according to an embodiment of the present invention, where the circuit 20 of the switching device is applied to a mobile phone triggered to start, the switching device may be a TYPE-C switching line in the process of starting power up of the mobile phone, an input end of the TYPE-C switching line is connected to a download source device (such as a computer), and an output end of the TYPE-C switching line is connected to an electronic device (such as a mobile phone), and of course, the embodiment of the present invention is only described by taking the switching device as a TYPE-C switching line as an example, and the invention is not limited thereto. For example, referring to fig. 2, the circuit 20 of the switching device includes:
a power supply line 201, a first auxiliary signal line 202, a second auxiliary signal line 203, and a voltage divider circuit 204; the power line 201 is connected to the first auxiliary signal line 202 and the second auxiliary signal line 203 through a voltage divider circuit 204, and the voltage divider circuit 204 is configured to divide a preset voltage signal on the power line 201, and input the first voltage signal obtained by dividing to the first auxiliary signal line 202 and the second auxiliary signal line 203.
The preset voltage signal may be a voltage signal of 5V, or may be a voltage signal of another voltage value, which may be specifically set according to actual needs, where the present invention is not specifically limited. Alternatively, the first voltage signal may be a voltage signal of 1.8V or a voltage signal of 1.9V, and of course, may be a high level signal of other voltage values, which is only illustrated by taking a voltage signal of 1.8V as an example, but the present invention is not limited thereto.
For example, the power line 201 may be a VBUS signal line, after the input end of the TYPE-C patch cord is plugged into the download source device, the download source device may input a 5V voltage signal to the power line 201, where the 5V voltage signal is divided by the voltage dividing sub-circuit 204, so as to obtain a 1.8V voltage signal, and input the 1.8V voltage signal to the electronic device through the output end of the patch device. In the embodiment of the present invention, by providing the voltage divider sub-circuit 204, the purpose is to: in order to prevent the 5V voltage signal from being directly input into the electronic device through the first auxiliary signal line 202 and the second auxiliary signal line 203, components in the electronic device are damaged due to the 5V voltage signal, so that the safety of the electronic device can be further improved, and meanwhile, the electronic device can control the start of the download mode after detecting the 1.8V voltage signal, so that the accuracy of the start of the download mode of the electronic device is improved.
In the circuit 20 of the switching device according to the embodiment of the present invention, after receiving an input preset voltage signal through the power line 201, the preset voltage signal may be subjected to voltage division processing through the voltage division sub-circuit 204, so as to obtain a first voltage signal after the voltage division processing, and the first voltage signal is input to the first auxiliary signal line 202 and the second auxiliary signal line 203, so that the first voltage signal is input to the electronic device through the first auxiliary signal line 202 and the second auxiliary signal line 203, so that after the electronic device detects the first voltage signal, the electronic device may start a downloading mode of the electronic device in a process of starting power-up of the mobile phone according to the first voltage signal, so as to perform a downloading task, thereby improving accuracy of starting the downloading mode of the electronic device.
Based on the embodiment corresponding to fig. 2, further, please refer to fig. 3 on the basis of the embodiment corresponding to fig. 2, fig. 3 is a schematic structural diagram of a circuit 20 of another switching device according to an embodiment of the present invention, and the switching device is exemplified as a TYPE-C switching line, an input end of the TYPE-C switching line is connected with a download source device, an output end of the TYPE-C switching line is connected with an electronic device, and the circuit 20 of the switching device further includes:
the voltage dividing circuit includes a first resistor 2041, a second resistor 2042, a third resistor 2043, and a fourth resistor 2044, wherein a first end of the first resistor 2041 is connected to the power line 201, a second end of the first resistor 2041 is connected to the first auxiliary signal line 202 and a first end of the second resistor 2042, a second end of the second resistor 2042 is connected to a first end of the fourth resistor 2044, a second end of the fourth resistor 2044 is connected to a first end of the third resistor 2043 and the second auxiliary signal line 203, and a second end of the third resistor 2043 is connected to the power line 201. Optionally, the first auxiliary signal line 202 is a first SBU signal line, and the second auxiliary signal line 203 is a second SBU signal line.
Further, the ratio of the resistance values of the first resistor 2041 and the second resistor 2042 is 3:2; the ratio of the resistance of the third resistor 2043 to the resistance of the fourth resistor 2044 is 3:2. For example, in the embodiment of the present invention, the resistance of the first resistor 2041 may be 3K, and the resistance of the second resistor 2042 may be 2K; of course, the resistance of the first resistor 2041 may be 30K, and the resistance of the second resistor 2042 may be 20K, as long as the ratio of the resistances of the first resistor 2041 and the second resistor 2042 is 3:2. Similarly, the resistance of the third resistor 2043 may be 3K, and the resistance of the fourth resistor 2044 may be 2K; of course, the resistance of the third resistor 2043 may be 30K, and the resistance of the fourth resistor 2044 may be 20K, as long as the ratio of the resistances of the third resistor 2043 and the fourth resistor 2044 is 3:2.
In the embodiment of the present invention, the purpose of the first resistor 2041 and the second resistor 2042 is to: the voltage division processing can be performed on the 5V voltage signal on the VBUS, the 1.8V voltage signal obtained after the voltage division processing is input to the first SBU signal line, and similarly, by setting the third resistor 2043 and the fourth resistor 2044, the purpose is that the voltage division processing can be performed on the 5V voltage signal on the VBUS, and the 1.8V voltage signal obtained after the voltage division processing is input to the second SBU signal line, so that the 5V voltage signal can be prevented from being directly input to the electronic device through the first SBU signal line and the second SBU signal line, and the components in the electronic device are damaged due to the 5V voltage signal, so that the safety of the electronic device can be further improved.
Optionally, the second end of the second resistor 2042 is connected to the GND205 line, and the first end of the fourth resistor 2044 is connected to the GND205 line.
In the practical application process, when the input end of the TYPE-C patch cord is inserted into the physical interface of the download source device and the output end is inserted into the physical interface of the mobile phone, the download source device starts to input a 5V voltage signal to the VBUS signal line in the TYPE-C patch cord, and after the 5V voltage signal is divided by the first resistor 2041, the second resistor 2042, the third resistor 2043 and the fourth resistor 2044, a 1.8V voltage signal is input to the first SBU interface and the second SBU interface of the physical interface of the electronic device through the first SBU signal line and the second SBU signal line, so that when the voltage signals output by the first SBU interface and the second SBU interface are detected to be 1.8V voltage signals, the detection circuit 101 in the mobile phone inputs the 1.8V voltage signal to the GPIO1021 of the CPU102, and because the input end of the TYPE-C patch cord continuously inputs the 5V voltage through the VBUS signal line, the mobile phone is triggered in the state, and the mobile phone starts to start up in the power-up state, the 1.8V voltage signal is detected by the detection circuit 101 in the mobile phone, and the electronic device can start up in the power-down mode, and the power-down mode is started.
Fig. 4 is a schematic structural diagram of an electronic device 40 according to an embodiment of the present invention, referring to fig. 4, the electronic device 40 includes:
a physical interface (not shown) and the electronic device circuitry 10 of any of the embodiments described above;
for example, please refer to fig. 5, fig. 5 is a schematic diagram illustrating connection between a physical interface 401 and a circuit 10 of an electronic device according to an embodiment of the present invention. The first end of the physical interface 401 is connected to the circuit 10 of the electronic device through the first auxiliary signal line 202, the second end of the physical interface 401 is connected to the circuit 10 of the electronic device through the second auxiliary signal line 203, and the circuit 10 of the electronic device is configured to start the download mode of the electronic device 40 when detecting that the voltage signals output by the physical interface 401 through the first auxiliary signal line 202 and the second auxiliary signal line 203 are both the first voltage signals.
The electronic device 40 provided in the embodiment of the present invention may implement the technical scheme corresponding to the circuit 10 of the electronic device shown in the foregoing embodiment, and its implementation principle and beneficial effects are similar, and will not be described herein again.
Fig. 6 is a schematic structural diagram of a switching device 60 according to an embodiment of the present invention, referring to fig. 5, the switching device 60 includes:
the circuit 20 of the switching device described in the above embodiment.
The switching device 60 provided in the embodiment of the present invention may implement the technical scheme corresponding to the circuit 20 of the switching device shown in the foregoing embodiment, and its implementation principle and beneficial effects are similar, and will not be described herein again.
Fig. 7 is a schematic structural diagram of a signal control system 70 according to an embodiment of the present invention, please refer to fig. 6, wherein the signal control system 70 includes:
the electronic device 40 described in the above embodiment and the switching device 60 described in the above embodiment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (5)
1. A circuit of an electronic device, comprising:
the electronic device comprises a detection circuit and a central processing unit CPU, wherein the CPU is provided with a general purpose input/output interface GPIO, the detection circuit is respectively connected with a physical interface of the electronic device and the CPU, and the detection circuit is used for outputting a first voltage signal to the GPIO when detecting that voltage signals output by a first port and a second port of the physical interface are both first voltage signals so as to start a downloading mode of the electronic device.
2. The circuit of claim 1, wherein the circuit comprises a plurality of capacitors,
the first port is a first SBU port, and the second port is a second SBU port.
3. The circuit of claim 2, wherein the circuit further comprises a logic circuit,
the detection circuit is an AND gate.
4. An electronic device, comprising:
a physical interface and circuitry of an electronic device as claimed in any one of the preceding claims 1-3;
the first end of the physical interface is connected with the circuit of the electronic device through a first auxiliary signal line, the second end of the physical interface is connected with the circuit of the electronic device through a second auxiliary signal line, and the circuit of the electronic device is used for starting a downloading mode of the electronic device when detecting that voltage signals output by the physical interface through the first auxiliary signal line and the second auxiliary signal line are both first voltage signals.
5. A signal control system comprising the electronic device of claim 4.
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| CN201611155930.XA CN106776400B (en) | 2016-12-14 | 2016-12-14 | Electronic equipment and circuit thereof, switching equipment and circuit thereof and signal control system |
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| CN201611155930.XA CN106776400B (en) | 2016-12-14 | 2016-12-14 | Electronic equipment and circuit thereof, switching equipment and circuit thereof and signal control system |
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| CN107613098B (en) * | 2017-08-24 | 2020-09-04 | Oppo广东移动通信有限公司 | Mobile terminal, download mode switching circuit thereof and download mode switching method thereof |
| CN108491285B (en) * | 2018-02-23 | 2021-08-06 | Oppo广东移动通信有限公司 | Data protection method applied to electronic equipment test and related product |
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| CN102281354A (en) * | 2011-08-05 | 2011-12-14 | 惠州Tcl移动通信有限公司 | Mobile phone software downloading system and software downloading method thereof |
| CN203849734U (en) * | 2013-12-31 | 2014-09-24 | 厦门鼎丞电子科技有限公司 | Programming downloader |
| CN105373422A (en) * | 2014-08-29 | 2016-03-02 | 展讯通信（上海）有限公司 | Method for controlling terminal device to enter downloading mode, terminal device and computer device |
| CN106199161A (en) * | 2015-04-29 | 2016-12-07 | 杭州军动科技有限公司 | A kind of voltage monitoring detection module |
| CN104881391A (en) * | 2015-06-10 | 2015-09-02 | 赛尔康技术（深圳）有限公司 | Identification circuit for USB Type-C interface |
| CN204833262U (en) * | 2015-06-10 | 2015-12-02 | 赛尔康技术（深圳）有限公司 | Identification circuit of USBType -C interface |
| CN105975039A (en) * | 2016-04-29 | 2016-09-28 | 乐视控股（北京）有限公司 | Method and device for controlling power supply of Type-C interface, and electronic equipment |
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