CN107562664B - SCM serial port upgrading device and circuit thereof - Google Patents
SCM serial port upgrading device and circuit thereof Download PDFInfo
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- CN107562664B CN107562664B CN201710840360.6A CN201710840360A CN107562664B CN 107562664 B CN107562664 B CN 107562664B CN 201710840360 A CN201710840360 A CN 201710840360A CN 107562664 B CN107562664 B CN 107562664B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention provides a single-chip serial port upgrading device and a circuit thereof, wherein the single-chip serial port upgrading device comprises: the device comprises a power supply module, a control module, a BOOT0 pull-up circuit, a horn power supply module and a serial communication module, wherein the power supply module, the BOOT0 pull-up circuit, the horn power supply module and the serial communication module are respectively connected with the control module, the control module leads out a downloading interface through the power supply module and the serial communication module, and the control module leads out a power supply interface through the BOOT0 pull-up circuit and the horn power supply module. By adopting the invention, the downloading and upgrading can be realized by only connecting the downloading interface with the downloading line and then supplying power to the power supply interface, the steps of detaching the shell, welding the downloading line, removing the welded downloading line, installing the shell and the like are omitted, the downloading efficiency is obviously improved, in addition, the carrying of a clamp is not required, the cost of manpower, material resources and the like is effectively reduced, and the trial production time of the product is greatly shortened.
Description
Technical Field
The invention relates to a serial port upgrading device, in particular to a serial port upgrading device for a single-chip microcomputer, and relates to a circuit for realizing the serial port upgrading device for the single-chip microcomputer.
Background
The SCM is the most widely applied chip scheme in the current electronic products, wherein the STM32 SCM is mainly used in 2 downloading modes, one is downloaded in a J-LINK mode, the other is downloaded in an ISP, and interfaces corresponding to the two downloading modes are an SW interface and a serial port.
When designing a product, there are usually several phases, the first phase being the board debug phase: hardware engineers in this stage usually bring out many interfaces, especially download debug interfaces, and typically bring out standard seats for debugging and downloading; the second stage is a small batch stage: the test points are led out when the hardware engineer draws the board at this stage, and then corresponding downloading jigs are manufactured, because the jigs are the best choice in view of mass production efficiency, and mass production products are basically in the second stage.
However, a problem is often encountered in the actual production process, since there is typically a small batch trial production stage prior to mass production, which is to provide a small batch of machines for application in the customer's actual scenario, however small batch machines are not always the most stable machines, the client also has some software BUGs in the testing process, even some BUGs have to be solved by upgrading firmware, so that the problem is solved, if the on-site upgrading is required, the client is very troublesome, the client needs to take a screwdriver to detach the shell, take a clamp to download after the shell is detached, and reload the shell after the shell is downloaded; even if the clamp is not provided, because only test points are led out by the circuit board of the product, the manual welding downloading lines are required to be welded one by one after the shell is disassembled, then downloading can be performed, the welded downloading lines are required to be removed after downloading is completed, the middle step is very complicated, the upgrading efficiency is extremely low, the company image is damaged, the number of field upgrading personnel is greatly increased, the cost of manpower and material resources and the like is increased, and the trial production time of the product is prolonged.
Disclosure of Invention
The invention aims to solve the technical problem of providing a single-chip serial port upgrading device capable of solving the problem of field upgrading efficiency and further realizing light loose downloading and upgrading on the basis of not needing shell disassembly, and providing a circuit for realizing the single-chip serial port upgrading device, aiming at effectively improving the upgrading efficiency of the single-chip, reducing the cost of manpower, material resources and the like and shortening the trial production time of products.
In this regard, the invention provides a serial port upgrading device for a single chip microcomputer, comprising: the device comprises a power supply module, a control module, a BOOT0 pull-up circuit, a horn power supply module and a serial port communication module, wherein the power supply module, the BOOT0 pull-up circuit, the horn power supply module and the serial port communication module are respectively connected with the control module, the control module leads out a downloading interface through the power supply module and the serial port communication module, and the control module leads out the power supply interface through the BOOT0 pull-up circuit.
The invention is further improved in that one end of the download interface is respectively connected with the power supply module and the serial port communication module, and the other end of the download interface is connected to the computer through a download line.
A further improvement of the invention is that the download line comprises a USB to serial line and a device power line.
A further improvement of the present invention is that the download line includes a power positive line, a power negative line, a transmitting line, and a receiving line.
The invention is further improved in that the power supply interface is connected to the USB port of the external device through a 5V power supply line.
A further improvement of the invention is that the 5V supply line comprises a ground line and a download initiation control line.
The invention is further improved in that the downloading interface is connected with the male head of the downloading line through the female head, and the power supply interface is connected with the female head of the 5V power supply line through the male head.
A further improvement of the invention is that the power supply module comprises a DC/DC power conversion circuit and a voltage stabilizing circuit, the DC/DC power conversion circuit being connected to the control module via the voltage stabilizing circuit.
The invention also provides a single-chip serial port upgrading circuit which is used for realizing the single-chip serial port upgrading device.
The BOOT0 pull-up circuit is further improved in that the BOOT0 pull-up circuit comprises a MOS tube Q4, a resistor R54, a resistor R53 and a resistor R69, wherein the D pole of the MOS tube Q4 is respectively connected with one end of the resistor R53 and one end of the resistor R69 through the resistor R54, the other end of the resistor R53 is grounded, the other end of the resistor R69 is connected to a BOOT0 pin of a singlechip in a control module, the S pole of the MOS tube Q4 is connected to a power supply end, and the G pole of the MOS tube Q4 is connected to a voltage stabilizing source of the control module.
Compared with the prior art, the invention has the beneficial effects that: the control module leads out the downloading interface through the power supply module and the serial port communication module, and leads out the power supply interface through the BOOT0 pull-up circuit and the loudspeaker power supply module, so that the downloading and upgrading can be realized as long as the downloading interface is connected with the downloading line, and then the power supply interface is powered on, the steps of detaching the shell, welding the downloading line, removing the welded downloading line, installing the shell and the like are omitted, the downloading efficiency is obviously improved, and compared with the prior art that each single chip microcomputer needs to be subjected to the downloading upgrading process of detaching the shell, welding the line and the like for 3-5 minutes, the single chip microcomputer can be upgraded only for about 10 seconds, and a clamp is not required to be carried.
Drawings
FIG. 1 is a schematic block diagram of one embodiment of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the present invention;
FIG. 3 is a schematic diagram of a download line according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a 5V power supply line according to one embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of one embodiment of the present invention;
FIG. 6 is a circuit schematic of a BOOT0 pull-up circuit according to one embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a power supply module according to an embodiment of the invention.
Detailed Description
Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 and 5, this example provides a serial port upgrade apparatus for a single chip microcomputer, including: the power supply module 1, the control module 2, the BOOT0 pull-up circuit 3, the loudspeaker power supply module 4 and the serial communication module 5, wherein the power supply module 1, the BOOT0 pull-up circuit 3, the loudspeaker power supply module 4 and the serial communication module 5 are respectively connected with the control module 2, the download interface 10 is led out by the control module 2 through the power supply module 1 and the serial communication module 5, and the power supply interface 11 is led out by the control module 2 through the BOOT0 pull-up circuit 3.
As shown in fig. 1, 5 and 7, the power supply module 1 of this example preferably includes a DC/DC power conversion circuit 8 and a voltage stabilizing circuit 9, and the DC/DC power conversion circuit 8 is connected to the control module 2 through the voltage stabilizing circuit 9. The external power supply outputs 4.2V to supply power to other chips in the equipment after DC/DC conversion is realized by the DC/DC power supply conversion circuit 8, and then the STM32 singlechip of the control module 2 is supplied with power from LDO voltage stabilization to 3.3V by the voltage stabilizing circuit 9.
The control module 2 in this example is the minimum system and functional module of the STM32 in the single-chip microcomputer, and the minimum system and some other functional interfaces required by the STM32 of the control module 2 to work normally, such as ADC detection and a speaker control line, etc. The BOOT0 pulling-up circuit 3 does not work when no upgrade is needed, and pulls up BOOT0 through an external power supply line when the upgrade is needed, namely the BOOT0 is used for realizing download starting control, and the BOOT0 is a download guide line. The serial communication module 5 is used for communicating with external equipment through a serial port. The loudspeaker power supply module 4 supplies power to an external loudspeaker, and a power switch is controlled through a singlechip (such as an STM32 singlechip). In addition, this embodiment also preferably includes a bluetooth communication module, where the bluetooth communication module is used to implement some fixed functions connected with the mobile phone.
In the prior art, most of related products of a singlechip are provided with test points in a board, and the test points are downloaded by a clamp during factory production, and because customers have the volume requirements and the waterproof and dustproof requirements, USB holes are inconvenient to open structurally; in this case, if the whole machine is tested on the customer's hand, once there is a problem that the upgrade is required, the upgrade process is very complicated, the shell and the welding wire are required to be removed, the welding wire is required to be removed and re-shelled after the upgrade is completed, the serial port is originally used for downloading the shell for only a few seconds, other time is wasted on the shell removal, the welding wire, the line removal and the shell installation, and about 3-5 minutes are required, and the process of solving the problem is seriously affected because the efficiency is very low.
After the method is adopted, a corresponding circuit is added when a PCB is drawn, a downloading line 6 is additionally manufactured to be in butt joint with a downloading interface 10 led out by the singlechip serial port upgrading device, so that downloading can be carried out easily, the efficiency problem of field upgrading can be well solved by only 5-10 seconds after downloading is completed, and the downloading can be carried out easily only through the downloading line 6 matched with the downloading interface 10 without complex steps of shell disassembly, welding lines, wire disassembly, shell assembly and the like, so that the efficiency is improved by tens of times or hundreds of times.
The singlechip is preferably STM32, and when the singlechip is downloaded in an ISP mode, 5 wires VCC (3.3V), GND, TX, RX and BOOT0 are needed, and before downloading, the BOOT0 is pulled up to enter a downloading mode, and the first technical characteristic of the singlechip is that a part of hardware circuits including BOOT0 pulling up circuit 3 are added on a PCB board, and when downloading is needed, BOOT0 is pulled up because other 4 wires VCC, GND, TX, RX are all provided with external interfaces, and no hardware circuits are added on the board. The second technical feature is to make a corresponding download line 6 for the download interface 10 of the product. The requirement of this example for the download line 6 is to include a serial port line, a power line and a ground line that can be downloaded, and also to include an interface that can pull BOOT0 high.
The product structure of the embodiment is shown in fig. 2, and the schematic structural diagrams of the matched downloading line 6 and 5V power supply line 7 are shown in fig. 3 and 4 respectively; as shown in fig. 5, one end of the download interface 10 in this example is connected to the power supply module 1 and the serial port communication module 5, and the other end of the download interface 10 is connected to a terminal device, preferably a computer, through a download line 6; the download interface 10 includes a power line, a ground line, TX and RX of a serial port, where the power line is connected to VIN (TP 5) of the power supply module 1, the ground line is connected to GND (TP 6) of the power supply module 1, the TX of the serial port is connected to the URXD (TP 24) of the serial port communication module 5, and the RX of the serial port is connected to UTXD (TP 23) of the serial port communication module 5.
The implementation of the download line 6 in this example is as follows: from the above, 5 wires are needed for downloading by the SCM such as STM32 in ISP mode, the anode and the cathode supply power to the SCM, the TX and RX wires are downloading wires, BOOT0 is downloading guide wire, and the downloading mode is entered when BOOT0 is high level. The problem of BOOT0 pulling up is solved by the BOOT0 pulling up circuit 3 in this example, the next problem is to solve other 4 wires, and because the product and the external communication mode is through the serial port, the serial port does not need to do other processing, therefore, in this example, the interface of the download wire 6 needs to be designed to share the original interface wire of the product, as shown in FIG. 2 and FIG. 3.
That is, in the downloading interface 10 of this example, a total of 4 wires, positive and negative power supply, TX and RX of serial ports, if the downloading interface 10 adopts an original female interface wire, the downloading wire 6 is a male head corresponding to the side, and the 4 wires are also required to be in one-to-one correspondence with the 4 wires in the female head of the downloading interface 10; the download line 6 in this example includes a USB-to-serial line and a device power supply line, i.e., the download line 6 includes a power positive line 12, a power negative line 13, a transmitting line and a receiving line. The power positive line 12 and the power negative line 13 are independently led out and connected with 15V after passing through the male head, and the DC/DC power conversion circuit 8 in the product is reduced to 3.3V and then supplies power to the singlechip of the control module 2; because the other ends of the TX and the RX are connected with the computer and can be downloaded through special download software, the other ends of the TX and the RX are connected with a head of a USB-to-serial port through a download line 6, and the existing USB 5V power supply line is cut off and then directly connected with the computer. As shown in fig. 3 below.
The power supply interface 11 in this example includes 3 wires: the power supply line is not used, and the SPK function line is used for realizing download starting control and is directly connected to an IO port of the singlechip, as shown in fig. 5; therefore, the side of the 5V power supply line 7 in this example only needs to be connected with the SPK and the ground, that is, the 5V power supply line 7 in this example includes the ground and the download starting control line, in fact, the 5V power supply line 7 is just a download starting controller, and the other end of the 5V power supply line is just connected with the positive electrode and the negative electrode of the USB connector, and the 5V voltage can be obtained by directly connecting the device to the computer during downloading, as shown in fig. 4 below. Therefore, the power supply interface 11 in this example is connected to the USB port of the external device through the 5V power supply line 7, where the USB port of the external device refers to a USB port capable of providing 5V voltage, such as a USB port of a computer.
In the implementation process, the download interface 10 in this example is connected to the male end of the download line 6 through a female end, and the power supply interface 11 is connected to the female end of the 5V power supply line 7 through a male end. The reason for this is that the serial port of the present singlechip is a female head, so that the existing interface can be utilized, and a male head matched with the female head of the download interface 10 can be matched on the side of the download line 6; on the other hand, in order to avoid error in wiring, the embodiment also performs fool-proof design, the power supply interface 11 is realized through a male connector, and the 5V power supply line 7 is provided with a female connector matched with the male connector of the power supply interface 11, so that on the basis of fully utilizing the existing interface, the upgrading efficiency of the power supply interface can be further improved, wiring error is prevented, and the power supply interface is shown in fig. 2 to 5 in detail.
Thus, the wiring, downloading and upgrading steps of this example are as follows: firstly, one end of a 5V power supply line 7 in fig. 4 is connected to a computer, and the other end of the 5V power supply line is connected to a power supply interface 11 in fig. 2, wherein the power supply interface 11 is a 3-core interface line; secondly, connecting one end of the downloading line 6 of fig. 3 to a computer, and connecting the other end of the downloading line to the downloading interface 10 of fig. 2, wherein the downloading interface 10 is a 4-core interface line; thirdly, the direct current power supply of the power supply module 1 is regulated to 15V, and the direct current power supply is connected to a power positive line 12 and a power negative line 13 of the downloading line 6 in fig. 3 and connected to the positive electrode and the negative electrode thereof (red and black lines can be adopted in practical application); and finally, opening the downloaded software on the computer, clicking the download for upgrading.
As shown in fig. 5 to 7, this example also provides a serial port upgrade circuit of a single-chip microcomputer, where the serial port upgrade circuit of the single-chip microcomputer is used to implement the serial port upgrade device of the single-chip microcomputer.
As shown in fig. 6, the BOOT0 pull-up circuit 3 in this example includes a MOS transistor Q4, a resistor R54, a resistor R53, and a resistor R69, where a D pole of the MOS transistor Q4 is connected to one end of the resistor R53 and one end of the resistor R69 through the resistor R54, the other end of the resistor R53 is grounded, the other end of the resistor R69 is connected to a BOOT0 pin of the singlechip in the control module 2, and an S pole of the MOS transistor Q4 is connected to a power supply end, and the power supply end is used to supply power and control starting, so that the power supply end is preferably directly connected to the download starting control line; the G pole of the MOS transistor Q4 is connected to the voltage stabilizing source of the control module 2, namely to the 3.3V voltage stabilizing source in the control module 2.
As can be seen from the circuit diagrams shown in FIGS. 5 and 6, BOOT0 is pulled up during downloading, so that the embodiment uses a MOS transistor Q4 to perform the switching action, and when the SPK network voltage is greater than 3.3V and VSPK-3.3V is greater than the conducting voltage of the MOS transistor Q4, the voltage of BOOT0 is divided by Vspk through a resistor R53 and a resistor R54, so that the effect of pulling BOOT0 up is achieved. The SPK is connected to a download starting control pin of the singlechip, namely is used for realizing download starting control, and the download starting control pin is a common IO port of the singlechip.
The implementation manner of BOOT0 pull-up in this example is as follows: firstly, BOOT0 defaults to be low level, so that external pulling up is needed to be achieved during upgrading, but the whole structure of the product cannot be destroyed, and the function interface of the shared product is thought; to change BOOT0 from low level to high level, voltage is required by the outside, because the working voltage of SCM such as STM32 is 3.3V, the external voltage cannot exceed too much, and the voltage is ensured to be obtained easily, so 5V voltage of USB is expected, the port of the SCM can bear and cannot be burnt, and the problem of external voltage is solved; then, the BOOT0 is changed from low level to high level, and then the level conversion effect of the MOS tube is combined, as shown in fig. 6, a P-MOS tube Q4 is adopted, in fig. 5 and 6, SPK is an IO port of the singlechip, the IO port of the singlechip is used for realizing a download starting control pin, SPK is connected to a source electrode (S pole) of the MOS tube, meanwhile SPK is a functional wire connected with the singlechip and the outside, 3.3V is connected to a grid electrode (G pole) of the MOS tube, and 3.3V is easy to obtain in a board because the supply voltage of the singlechip is 3.3V. The grid (D pole) is connected in series to the ground through a resistor R53 and a resistor R54, and BOOT0 is connected between two voltage dividing resistors of the resistor R53 and the resistor R54. As shown by the P-MOS switch characteristic, when VGS is more than or equal to 0, the MOS transistor Q4 is not conducted, when VGS is less than the threshold conduction voltage, the MOS transistor Q4 is conducted, and the threshold conduction voltage of the MOS transistor in the lower diagram is 0.62V. Under the normal use condition, the highest SPK voltage is 3.3V, so that the MOS transistor Q4 is not conducted, and BOOT0 defaults or is at a low level; when the voltage of SPK needs to be updated, the voltage is input through 5V of USB, at the moment, MOS tube Q4 is conducted, and then the voltage of BOOT0 is pulled up through voltage division of resistor R53 and resistor R54, so that the problem of level pulling up of BOOT0 is effectively solved.
In summary, the control module 2 leads out the download interface 10 through the power supply module 1 and the serial port communication module 5, and the control module 2 leads out the power supply interface 11 through the BOOT0 pull-up circuit 3 and the speaker power supply module 4, so that as long as the download interface 10 is connected with the download line 6, then the power supply interface 11 is supplied to realize downloading and upgrading, the steps of removing the shell, welding the download line 6, removing the welded download line 6, installing the shell and the like are omitted, the downloading efficiency is obviously improved, and compared with the prior art that each single chip microcomputer needs to be subjected to the downloading upgrading process of 3-5 minutes such as removing the shell and the like, each single chip microcomputer only needs about 10 seconds, and no clamp is required to be carried, therefore, the upgrading efficiency of the single chip microcomputer can be effectively improved, the cost of manpower and material resources and the like can be reduced, and the test time of a product can be greatly shortened.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (3)
1. A single chip microcomputer serial port upgrading device is characterized by comprising: the device comprises a power supply module, a control module, a BOOT0 raising circuit, a loudspeaker power supply module and a serial port communication module, wherein the power supply module, the BOOT0 raising circuit, the loudspeaker power supply module and the serial port communication module are respectively connected with the control module, the control module leads out a downloading interface through the power supply module and the serial port communication module, the control module leads out the power supply interface through the BOOT0 raising circuit, the BOOT0 raising circuit comprises a MOS tube Q4, a resistor R54, a resistor R53 and a resistor R69, the D pole of the MOS tube Q4 is respectively connected with one end of the resistor R53 and one end of the resistor R69 through the resistor R54, the other end of the resistor R53 is grounded, the other end of the resistor R69 is connected to a BOOT0 pin of a singlechip in the control module, the S pole of the MOS tube Q4 is connected to a power supply end, and the G pole of the MOS tube Q4 is connected to a voltage stabilizing source of the control module; one end of the download interface is respectively connected with the power supply module and the serial port communication module, and the other end of the download interface is connected to a computer through a download line; the power supply interface is connected to a USB port of external equipment through a 5V power supply line; the downloading line comprises a USB-to-serial port line and an equipment power supply line, namely the downloading line comprises a power positive line, a power negative line, a transmitting line and a receiving line, wherein the power positive line and the power negative line are independently led out and connected with 15V after passing through a male head, and are powered by a singlechip of a control module after being reduced to 3.3V by a DC/DC power conversion circuit of a power supply module, and the other ends of the transmitting line and the receiving line are connected with a head of the USB-to-serial port and then connected with a computer, so that the existing USB 5V power supply line is cut off; the 5V power supply line comprises a ground wire and a download starting control wire, one end of the download starting control wire is directly connected to the SPK of the singlechip, the other end of the download starting control wire is connected with the anode and the cathode of the USB connector, and the 5V voltage can be obtained by directly connecting the download starting control wire to a computer during downloading.
2. The serial upgrade apparatus of a single chip microcomputer according to claim 1, wherein the download interface is connected to a male head of the download line through a female head, and the power supply interface is connected to a female head of the 5V power supply line through a male head.
3. The serial upgrade apparatus of a single chip microcomputer according to claim 1, wherein the power supply module comprises a DC/DC power conversion circuit and a voltage stabilizing circuit, and the DC/DC power conversion circuit is connected to the control module through the voltage stabilizing circuit.
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| CN108848120B (en) * | 2018-05-02 | 2021-05-18 | 深圳创维－Rgb电子有限公司 | System for upgrading smart television mainboard software in batch and implementation method |
| CN108693796A (en) * | 2018-07-03 | 2018-10-23 | 深圳市泰比特科技有限公司 | A kind of waterproof intelligent sharing motor bicycle control terminal |
| CN109739531A (en) * | 2018-12-13 | 2019-05-10 | 深圳市华信天线技术有限公司 | A kind of system and method controlling chip upgrade by changing voltage value |
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| CN101526931A (en) * | 2009-04-02 | 2009-09-09 | 华东师范大学 | Universal serial bus in-system programmer of single chip microcomputer |
| CN102156420A (en) * | 2010-12-23 | 2011-08-17 | 天津职业技术师范大学 | Device for accelerating downloading of data from computer to target memory of singlechip |
| WO2012106953A1 (en) * | 2011-02-12 | 2012-08-16 | 中兴通讯股份有限公司 | Device and method for detecting state of overload and overcurrent protector |
| CN102170301A (en) * | 2011-04-06 | 2011-08-31 | 湖北大学 | STC single-chip microcomputer Bluetooth serial port wireless download device |
| CN202422525U (en) * | 2011-12-26 | 2012-09-05 | 黄克亚 | Single-chip microcomputer USB (universal serial bus)-ISP (internet service provider) experimental device |
| CN202601213U (en) * | 2012-04-13 | 2012-12-12 | 深圳市航天泰瑞捷电子有限公司 | Synchronous Transport Mode (STM) 32 microprocessor program burner |
| CN103678194A (en) * | 2013-12-03 | 2014-03-26 | 中国科学院深圳先进技术研究院 | Device used for ISP (internet service provider) downloading of STM (scanning tunneling microscope) 32 program |
| CN103677943A (en) * | 2013-12-27 | 2014-03-26 | 浙江众邦机电科技有限公司 | Upgrading method of control software of sewing machine |
| CN104317691A (en) * | 2014-10-24 | 2015-01-28 | 中国重汽集团济南动力有限公司 | Simulation debugging and code downloading tool |
| CN204480233U (en) * | 2015-03-25 | 2015-07-15 | 广西机电职业技术学院 | A kind of automatic download circuit of STC single-chip microcomputer supporting 5V and 3.3V |
| CN205193783U (en) * | 2015-09-25 | 2016-04-27 | 广州市星翼电子科技有限公司 | Circuit is downloaded to a singlechip key |
| CN105303929A (en) * | 2015-11-20 | 2016-02-03 | 电子科技大学 | Experiment teaching system for single-chip microcomputer and radio frequency card identification |
| CN105573207A (en) * | 2015-12-31 | 2016-05-11 | 苏州伊菲斯信息技术有限公司 | Data acquisition controller and data acquisition method used for electric tools |
| CN205882817U (en) * | 2016-07-08 | 2017-01-11 | 广州大学 | Wind energy collection device based on wireless sensor network |
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