CN106776183B - Debugging circuit, debugging device, modulation system and electronic equipment - Google Patents
Debugging circuit, debugging device, modulation system and electronic equipment Download PDFInfo
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- CN106776183B CN106776183B CN201611199635.4A CN201611199635A CN106776183B CN 106776183 B CN106776183 B CN 106776183B CN 201611199635 A CN201611199635 A CN 201611199635A CN 106776183 B CN106776183 B CN 106776183B
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- 235000005138 Spondias dulcis Nutrition 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 14
- 238000011161 development Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
- G06F11/273—Tester hardware, i.e. output processing circuits
- G06F11/2733—Test interface between tester and unit under test
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
- G06F11/2215—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test error correction or detection circuits
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- Test And Diagnosis Of Digital Computers (AREA)
Abstract
The invention discloses a debugging circuit, a debugging device, a modulation system and electronic equipment, wherein the debugging circuit comprises a control chip, a link switching unit and an SD card seat; when the control chip detects that the SD card is inserted into the SD card seat, the link switching unit communicates pins used for carrying out data communication with the SD card on the control chip to the SD card seat, and at the moment, the control chip can carry out normal read-write operation on the SD card; when the control chip detects that the SD card is not inserted into the SD card seat, the link switching unit communicates pins for debugging on the control chip to the SD card seat, at the moment, the whole machine of the product can be debugged through the SD card seat, and when only the SD card slot is reserved outside the electronic product and the reserved test points on the circuit board are wrapped in the whole machine, the operations of research, development, debugging, production line testing and the like of the whole machine of the product are facilitated.
Description
Technical Field
The invention relates to the technical field of circuit design, in particular to a debugging circuit, a debugging device, a modulation system and electronic equipment.
Background
At present, many electronic products tend to develop in the directions of miniaturization, water resistance and the like, an exposed USB interface is canceled, only an SD card slot is reserved, and although test points are reserved on a circuit board of the product, after the product is formed into a whole machine, the test points are generally wrapped in the whole machine, so that the development and debugging of the whole machine of the product, the production line test and the like are inconvenient to perform.
Disclosure of Invention
The invention provides a debugging circuit, a debugging device, a modulation system and electronic equipment, which are used for solving the problems that under the condition that only an SD card slot is reserved outside an electronic product, the reserved test point on a circuit board is wrapped in a whole machine, so that the research, the development, the debugging, the production line test and the like of the whole machine of the product are inconvenient to carry out.
According to one aspect of the invention, the invention provides a debug circuit, which comprises a control chip, a link switching unit and an SD card seat;
the control chip is used for monitoring whether the SD card is inserted into the SD card seat;
the link switching unit is used for switching on a pin for debugging on the control chip and a corresponding pin of the SD card seat when the control chip monitors that the SD card is not inserted into the SD card seat, and switching off the pin for data communication with the SD card on the control chip and the corresponding pin of the SD card seat; when the control chip monitors that the SD card is inserted into the SD card seat, a pin used for debugging on the control chip is disconnected with a corresponding pin of the SD card seat, and a pin used for data communication with the SD card on the control chip is communicated with a corresponding pin of the SD card seat.
According to another aspect of the present invention, there is provided a debugging device including an adapter plate for inserting an SD card socket, and a USB connector connected to the adapter plate;
the adapter plate is provided with a DATA 0-1 pin, a DATA 1-1 pin and a DATA 2-1 pin, and when the adapter plate is inserted into the SD card seat, the DATA 0-1 pin, the DATA 1-1 pin and the DATA 2-1 pin are respectively connected with the DATA0 pin, the DATA1 pin and the DATA2 pin of the SD card seat;
the end, which is contacted with the SD card seat, of the adapter plate is subjected to corner cutting treatment, so that after the adapter plate is inserted into the SD card seat, signals of a CD pin of the SD card seat are high level;
the VUBS pin of the USB connector is connected with the DATA2_1 pin of the adapter plate, the D+ pin of the USB connector is connected with the DATA0_1 pin of the adapter plate, and the D-pin of the USB connector is connected with the DATA1_1 pin of the adapter plate.
According to still another aspect of the present invention, there is provided an electronic device including the debug circuitry described above.
According to still another aspect of the present invention, there is provided a modulation system including the above-described debug circuit, and the above-described debug apparatus;
when the movable end of the single-pole double-throw switch is connected with the first fixed end, the modulation system enters a function debugging mode/a firmware upgrading mode;
when the movable end of the single-pole double-throw switch is connected with the second fixed end, the modulation system enters a firmware upgrading mode/a function debugging mode.
The beneficial effects of the invention are as follows: the embodiment of the invention multiplexes the SD card signal and the USB signal of the control chip, when the control chip detects that the SD card is inserted into the SD card seat, the link switching unit connects a pin used for carrying out data communication with the SD card on the control chip to the SD card seat, and at the moment, the control chip can carry out normal read-write operation on the SD card; when the control chip detects that the SD card is not inserted into the SD card seat, the link switching unit connects pins used for debugging on the control chip to the SD card seat, and at the moment, the whole machine of the product can be debugged through the SD card seat, so that the problem that under the condition that only the SD card slot is reserved outside an electronic product, the test points reserved on the circuit board are wrapped in the whole machine is solved, and the research, the development, the debugging, the production line test and other works of the whole machine of the product are inconvenient to carry out.
Drawings
FIG. 1 is a schematic circuit diagram of a debug circuit provided by one embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a debugging device according to an embodiment of the present invention;
FIG. 3 is a functional block diagram of an electronic device provided in one embodiment of the invention;
fig. 4 is a functional block diagram of a modulation system provided in one embodiment of the present invention.
Detailed Description
The design concept of the invention is as follows: many electronic products develop in the directions of miniaturization, water resistance and the like, only SD card slots are reserved outside, and test points reserved on a circuit board are wrapped in the whole machine, so that the development and debugging of the whole machine of the products, the production line test and the like are inconvenient to perform. In order to solve the problem, the SD card signal and the USB signal of the control chip are multiplexed, when the SD card seat is inserted into the SD card, a pin used for data communication with the SD card on the control chip is connected to the SD card seat, and the control chip can perform normal read-write operation on the SD card; when the SD card seat is not inserted into the SD card, a pin for debugging on the control chip is connected to the SD card seat, at the moment, the debugging device is inserted into the SD card seat to debug the whole product, and different modes can be selected through a switch on the debugging device.
Example 1
Fig. 1 is a schematic circuit diagram of a debug circuit according to an embodiment of the present invention, and as shown in fig. 1, the debug circuit provided in this embodiment includes a control chip U1, a link switching unit, and an SD card socket J2.
The control chip U1 monitors whether the SD card is inserted into the SD card holder J2. When the control chip U1 monitors that the SD card is not inserted into the SD card seat J2, the link switching unit connects the pin used for debugging on the control chip U1 with the corresponding pin of the SD card seat J2, and disconnects the pin used for data communication with the SD card on the control chip U1 from the corresponding pin of the SD card seat J2, at the moment, the pin used for debugging on the control chip U1 is led to the outside of the product through the SD card seat J2, and the upper computer can establish connection with the control chip U1 through the SD card seat J2 to carry out relevant debugging work of the whole product.
When the control chip U1 monitors that the SD card is inserted into the SD card seat J2, the link switching unit disconnects the pin used for debugging on the control chip U1 from the corresponding pin of the SD card seat J2, and connects the pin used for data communication with the SD card on the control chip U1 with the corresponding pin of the SD card seat J2, and at the moment, the control chip U1 can read and write the SD card normally.
When the SD card is inserted into the SD card holder, one corner of the SD card is propped against the position of the CD pin, so that the CD pin of the SD card holder is pulled down to a low level, and therefore in the preferred embodiment, the control chip U1 determines whether the SD card is inserted into the SD card holder J2 by detecting the signal of the CD pin of the SD card holder J2: when detecting that the signal of the CD pin of the SD card seat J2 is at a high level, the control chip U1 judges that the SD card is not inserted into the SD card seat J2 and sends a high-level control signal to the link switching unit; when detecting that the signal of the CD pin of the SD card holder J2 is at a high level, the control chip U1 determines that the SD card is inserted into the SD card holder J2, and sends a low-level control signal to the link switching unit through the SEL0 pin.
Preferably, the link switching unit comprises two dual-channel single pole double throw switches: a first switch U2 and a second switch U3. The first input channel CH1 of the first switch U2 is connected with a D0 pin and a D1 pin which are used for DATA communication with the SD card on the control chip U1, the second input channel CH2 of the first switch U2 is connected with a USB_DP pin and a USB_DM pin which are used for debugging on the control chip U1, and the OUTPUT channel OUTPUT of the first switch U2 is connected with a DATA0 pin and a DATA1 pin of the SD card seat J2. The first input channel CH1 of the second switch U3 is connected with a D3 pin and a D4 pin which are used for DATA communication with the SD card on the control chip U1, the second input channel CH2 of the second switch U3 is connected with a DETECT_VBUS pin and an Update pin which are used for debugging on the control chip U1, and the OUTPUT channel OUTPUT of the second switch U3 is connected with a DATA2 pin and a DATA3 pin of the SD card seat J2.
When the SD card is not inserted into the SD card holder J2, the SEL1 pins of the first switch U2 and the second switch U3 are grounded, the control terminal SEL0 is connected to VCC through the resistor R3 and pulled high, the first input channel CH1 of the first switch U2 and the second switch U3 is closed, the second input channel CH2 is opened, and the four pins of the control chip U1 for performing debugging operations, namely, update, usb_dp, usb_dm, detect_vbus, are connected to the SD card holder J2. When the SD card holder J2 is inserted into the SD card, after the control chip U1 detects that the level of the CD pin of the SD card holder is pulled down, the control terminals SEL0 of the first switch U2 and the second switch U3 are pulled down, and four pins D0, D1, D2, and D3 on the control chip U1 for performing data communication with the SD card are connected to the SD card holder J2.
Preferably, the debug circuit provided in this embodiment further includes a reserved USB connector J1, a VBUS pin of the USB connector J1 is connected to a detect_vbus pin of the control chip U1, a d+ pin and a D-pin of the USB connector are respectively connected to a usb_dp pin and a usb_dm pin of the control chip U1, and a GND pin of the USB connector J1 is grounded. Under the condition that a link switching unit fails and the like, the whole product can be disassembled, and the product is debugged through the USB connector J1.
In this embodiment, the control chip U1 is an Ambarella DSP chip, and the Ambarella is a current high-end video solution provider, and many high-end video devices all use the Ambarella solution, especially products such as a motion camera and an unmanned aerial vehicle with better market prospect. Most of these products only reserve unique input and output interfaces, namely SD card holders, outside the equipment, and the debugging circuit provided by the embodiment is applied to the products, so that the debugging work of the whole product can be conveniently carried out through the SD card holders.
Example two
Fig. 2 is a schematic circuit diagram of a debugging device according to an embodiment of the present invention, and as shown in fig. 2, the debugging device provided in this embodiment includes an adapter board for inserting an SD card socket, and a USB connector J3 connected to the adapter board.
The adapter plate is provided with a DATA 0-1 pin, a DATA 1-1 pin and a DATA 2-1 pin, and when the adapter plate is inserted into the SD card seat, the DATA 0-1 pin, the DATA 1-1 pin and the DATA 2-1 pin of the adapter plate are respectively connected with the DATA0 pin, the DATA1 pin and the DATA2 pin of the SD card seat J2. In this embodiment, the interposer has the same shape as a general SD card, but is subjected to corner cutting treatment at one end (lower left corner) in contact with the SD card holder J2. When a common SD card is inserted into the SD card seat, the lower left corner of the SD card is propped against the CD pin of the SD card seat, so that the CD pin of the SD card seat is pulled down to be in a low level. The lower left corner of the adapter plate is subjected to corner cutting treatment, so that after the adapter plate is inserted into the SD card seat, signals of a CD pin of the SD card seat are high level, and the system can judge that the SD card is not inserted into the SD card seat.
The VUBS pin of the USB connector J3 is connected with the DATA2_1 pin of the adapter plate, the D+ pin of the USB connector J3 is connected with the DATA0_1 pin of the adapter plate, and the D-pin of the USB connector is connected with the DATA1_1 pin of the adapter plate. The whole product can be debugged through the USB connector J3.
Preferably, the debugging device provided in this embodiment is further provided with a single-pole double-throw switch SW1, and the adapter board is further provided with a DATA3_1 pin and a vdd_1 pin, and when the adapter board is inserted into the SD card, the DATA3_1 pin and the vdd_1 pin are respectively connected with the DATA3 pin and the VDD pin of the SD card. The movable end of the single pole double throw switch SW1 is connected with the DATA3_1 pin of the adapter plate, the first fixed end is connected with the VDD_1 pin of the adapter plate, and the second fixed end is connected with the GND pin of the USB connector J3. The Update pin of the control chip U1 can be selectively pulled up or pulled down by pulling the single-pole double-throw switch SW1, so that the system can be controlled to enter different modes after the product is started and electrified, for example, a firmware upgrading mode or a function debugging mode can be selectively entered.
Example III
Fig. 3 is a functional block diagram of an electronic device according to an embodiment of the present invention, where an electronic device 300 according to the present embodiment includes a debug circuit 310 according to the first embodiment.
Example IV
Fig. 4 is a functional block diagram of a modulation system according to an embodiment of the present invention, and as shown in fig. 4, a modulation system 400 according to this embodiment includes a debug circuit 410 in embodiment 1 and a debug apparatus 420 in embodiment 2. When the movable end of the single-pole double-throw switch SW1 is connected to the first fixed end or the second fixed end, the Update pin of the control chip U1 is pulled up or pulled down, so that the modulation system 400 enters different working modes, such as a firmware upgrade mode or a function debug mode. But the level required for the system to enter firmware upgrade mode or functional debug mode is different for different models of chips.
For example, for the amba S2L33m-A1-RH chip, when the movable end of the single-pole double-throw switch SW1 is terminated at the first stationary end, the data3_1 pin of the adapter plate is directly connected to the vdd_1 pin, and since the data3_1 pin of the adapter plate is finally connected to the Update pin of the control chip U1 through the SD card J2 and the second switch U3 when the adapter plate is inserted into the SD card J2, the level of the Update pin is pulled up by VDD. After the Update pin of the control chip U1 detects the high level, the modulation system 400 is controlled to enter a firmware upgrade mode, and at the moment, the whole software of the electronic product can be upgraded.
When the movable end of the single pole double throw switch SW1 is connected to the second stationary end, the data3_1 pin of the adapter plate is directly connected to ground, so that the level of the Update pin of the control chip U1 is pulled down. After the Update pin of the control chip U1 detects a low level, the modulation system 400 is controlled to enter a functional debugging mode, and an upper computer such as a PC can send an instruction to the control chip U1 in the whole electronic product through a USB connector to carry out debugging analysis and testing.
However, for the amba A9SE75 chip, when the movable end of the single-pole double-throw switch SW1 is connected to the first fixed end, so that the Update pin of the control chip U1 is pulled high by VDD, the modulation system 400 enters a function debug mode; when the movable end of the single pole double throw switch SW1 is connected to the second fixed end, the Update pin of the control chip U1 is pulled down by GND, and the modulation system 400 enters the firmware upgrade mode. Therefore, in actual use, the connection direction of the single-pole double-throw switch needs to be selected according to the system requirements.
The SD card signal and the USB signal of the control chip are multiplexed, and when the SD card seat is inserted into the SD card, normal read-write operation can be performed on the SD card; when the SD cassette is inserted into the modulation device, the whole machine of the product can be debugged, and different modes can be selected through a switch on the debugging device, so that the problems that under the condition that only the SD card slot is reserved outside an electronic product, the test point reserved on the circuit board is wrapped in the whole machine, and therefore the research, the development, the debugging, the production line test and the like of the whole machine of the product are inconvenient to perform are solved.
The foregoing is merely a specific embodiment of the invention and other modifications and variations can be made by those skilled in the art in light of the above teachings. It is to be understood by persons skilled in the art that the foregoing detailed description is provided for the purpose of illustrating the invention more fully, and that the scope of the invention is defined by the appended claims.
Claims (9)
1. The debugging circuit is characterized by comprising a control chip, a link switching unit and an SD card seat;
the control chip is used for monitoring whether the SD card is inserted into the SD card seat;
the link switching unit is used for switching on a pin for debugging on the control chip and a corresponding pin of the SD card seat when the control chip monitors that the SD card is not inserted into the SD card seat, and switching off the pin for data communication with the SD card on the control chip and the corresponding pin of the SD card seat; when the control chip monitors that the SD card is inserted into the SD card seat, a pin used for debugging on the control chip is disconnected with a corresponding pin of the SD card seat, and a pin used for data communication with the SD card on the control chip is communicated with a corresponding pin of the SD card seat.
2. The debug circuitry of claim 1, wherein said control chip is specifically configured to determine whether an SD card is inserted into said SD card socket by detecting signals from a CD pin of said SD card socket;
when the signal of the CD pin of the SD card seat is detected to be at a high level, judging that the SD card is not inserted into the SD card seat, and sending a high-level control signal to the link switching unit;
when the signal of the CD pin of the SD card seat is detected to be at a low level, the SD card seat is judged to be inserted with the SD card, and a low-level control signal is sent to the link switching unit.
3. The debug circuitry of claim 2, wherein the link switching unit comprises a first switch and a second switch; the first switch and the second switch are two-channel single-pole double-throw switches;
the first input channel of the first switch is connected with a D0 pin and a D1 pin which are used for DATA communication with the SD card on the control chip, the second input channel of the first switch is connected with a USB_DP pin and a USB_DM pin which are used for debugging on the control chip, and the output channel of the first switch is connected with a DATA0 pin and a DATA1 pin of the SD card seat;
the first input channel of the second switch is connected with a D3 pin and a D4 pin which are used for DATA communication with the SD card on the control chip, the second input channel of the second switch is connected with a detect_VBUS pin and an Update pin which are used for debugging on the control chip, and the output channel of the second switch is connected with a DATA2 pin and a DATA3 pin of the SD card seat;
the control end of the first switch and the control end of the second switch are connected with a control signal sent by the control chip.
4. The debug circuitry of claim 3, wherein said debug circuitry further comprises a reserved USB connector;
the VBUS pin of the reserved USB connector is connected with the detection_VBUS pin of the control chip;
the D+ pin and the D-pin of the reserved USB connector are respectively connected with the USB_DP pin and the USB_DM pin of the control chip;
and the GND pin of the reserved USB connector is grounded.
5. The debug circuitry of claim 4, wherein the control chip is an Ambarella DSP chip.
6. The debugging device is characterized by comprising an adapter plate used for being inserted into an SD card seat and a USB connector connected with the adapter plate;
the adapter plate is provided with a DATA 0-1 pin, a DATA 1-1 pin and a DATA 2-1 pin, and when the adapter plate is inserted into the SD card seat, the DATA 0-1 pin, the DATA 1-1 pin and the DATA 2-1 pin are respectively connected with the DATA0 pin, the DATA1 pin and the DATA2 pin of the SD card seat;
the end, which is contacted with the SD card seat, of the adapter plate is subjected to corner cutting treatment, so that after the adapter plate is inserted into the SD card seat, signals of a CD pin of the SD card seat are high level;
the VUBS pin of the USB connector is connected with the DATA2_1 pin of the adapter plate, the D+ pin of the USB connector is connected with the DATA0_1 pin of the adapter plate, and the D-pin of the USB connector is connected with the DATA1_1 pin of the adapter plate.
7. The debugging device of claim 6, wherein the debugging device is further provided with a single pole double throw switch;
the adapter plate is also provided with a DATA 3-1 pin and a VDD-1 pin, and when the adapter plate is inserted into the SD card seat, the DATA 3-1 pin and the VDD-1 pin are respectively connected with the DATA3 pin and the VDD pin of the SD card seat;
the movable end of the single-pole double-throw switch is connected with the DATA3_1 pin of the adapter plate, the first fixed end is connected with the VDD_1 pin of the adapter plate, and the second fixed end is connected with the GND pin of the USB connector.
8. An electronic device comprising the debug circuitry of any of claims 1-5.
9. A modulation system comprising the debug circuitry of claim 4 or 5, and the debug apparatus of claim 7;
when the movable end of the single-pole double-throw switch is connected with the first fixed end, the modulation system enters a function debugging mode/a firmware upgrading mode;
when the movable end of the single-pole double-throw switch is connected with the second fixed end, the modulation system enters a firmware upgrading mode/a function debugging mode.
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| CN201611199635.4A CN106776183B (en) | 2016-12-22 | 2016-12-22 | Debugging circuit, debugging device, modulation system and electronic equipment |
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| CN201611199635.4A CN106776183B (en) | 2016-12-22 | 2016-12-22 | Debugging circuit, debugging device, modulation system and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107256187A (en) * | 2017-06-16 | 2017-10-17 | 郑州云海信息技术有限公司 | SD card physical switch detection circuit, method and SD card closing detecting apparatus |
| CN109212268A (en) * | 2017-06-29 | 2019-01-15 | 北京小米移动软件有限公司 | Electronic equipment, circuit switching device and commissioning device |
| CN109239575B (en) * | 2018-08-01 | 2020-12-29 | 上海移远通信技术股份有限公司 | Detection device, detection method and automatic detection system |
| CN109388544B (en) * | 2018-10-30 | 2022-03-04 | 郑州云海信息技术有限公司 | Fault monitoring method and device and electronic equipment |
| CN111650537B (en) * | 2020-06-17 | 2022-04-15 | 东莞华贝电子科技有限公司 | Auxiliary detection circuit, device, main board and terminal equipment |
| CN112181753B (en) * | 2020-09-25 | 2022-11-04 | 烽火通信科技股份有限公司 | Debugging method, system and readable storage medium |
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| CN203241987U (en) * | 2013-05-27 | 2013-10-16 | 青岛海信电子设备有限公司 | Storage card debug device |
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| TWI222028B (en) * | 2002-06-07 | 2004-10-11 | Carry Computer Eng Co Ltd | Switching method and judgment method of common connector and terminals of memory card |
| TW201627862A (en) * | 2015-01-26 | 2016-08-01 | 鴻海精密工業股份有限公司 | Debug circuit, debug request circuit and debug system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102043933A (en) * | 2009-10-21 | 2011-05-04 | 深圳Tcl新技术有限公司 | SD (Secure Digital) card reader module with controllable operating state |
| CN203241987U (en) * | 2013-05-27 | 2013-10-16 | 青岛海信电子设备有限公司 | Storage card debug device |
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