Chi Zhang

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There should be a blinking LED on the debugger if the USB connection is working and the firmware code is working properly. If the debugger is working properly, you can...

If using 3V power supply, the firmware code needs some changes: 1. Debug.H: `#define FREQ_SYS 16000000` 2. Debug.C: Uncomment this line `GLOBAL_CFG = GLOBAL_CFG | bLDO3V3_OFF;//3.3V LDO OFF `

I have uploaded the 3v3 version of the firmware, you can try it out.

CMSIS-DAP V2 driver will be installed automatically in Win10 or higher. If it is not installed automatically, you can manually install it as a WinUSB device. ![image](https://github.com/abgelehnt/Tiny-DAPLink/assets/19761118/1827e9a7-5749-41ba-aee5-cf0c99e85c23)