WCHLINK/DAPLINK

I won’t pave the way below and get straight to the point.

1. Main functions

1. Download and debug ARM core microcontroller (STM32, GD32, etc. microcontroller)

2.STC microcontroller download

3. Serial communication and debugging

2. Production process

1. Solder the hardware according to the schematic diagram

2. After confirming that the welding is correct, download the DAPLINK firmware (use a data cable to connect the board and computer). The download configuration is as shown in the figure below.

Select the bin file in the user program and click download

3. After the download is successful, power off and on the board. Use a short-circuit cap to short-circuit the txd and rxd pins of the board header. Open your own serial port debugging software and send any characters. If you can receive it, congratulations, the production is successful!

4. If you want to add icing on the cake, you can also use 12mm heat shrink tube to increase the physical resistance and magic resistance of the board while reducing magic damage.

3. Introduction to button functions

1. The power button on the left mainly controls the power supply of the 5V and 3.3V pins. Press to cut off the power and it will have power by default. This design is mainly to control the reset of the download board (power-on reset), eliminating the need for an RST pin and the need to unplug and plug in data lines.

2. The boot pin on the right is used to switch the debugging mode of the board. Unplug the data cable, press the boot button and then power on, which will switch the debugging mode of the board. The blue light is always on for Arm debugging mode, and the blue light is always off for RISC debugging mode (haven’t tried it yet)

4. keil debugging configuration

Debug needs to be set to CMSIS-DAP as shown in the figure below