Dear Community,
I’m currently developing with the STSPIN32G4, but I’m encountering some difficulties related to flashing and powering the chip.
Below is a summary of my setup and the issues I’m facing:
I'm using ST-Link V2 with the following connections:
SWDIO, SWCLK, GND, and VCCI would like to use an external 3.3V power source to power the STSPIN32G4
Case 1: Powered by ST-Link V2 (VCC connected)
- STM Programmer can connect
- Flashing the image succeeds, but:
- None of the GPIOs are active
- UART has no output
- Measured VCC is only ~2.2V
Case 2: Powered by external 3.3V
- Using Arduino 3.3V output or regulated bench power supply
- STM Programmer cannot connect and shows : "Error: while trying to connect"
- ST-Link is connected with only SWDIO, SWCLK, and GND (no VCC)
Any insights or suggestions would be greatly appreciated. Thanks in advance for your support!
Best regards,
