STM32G4 MCU peripheral Not working except JTAG and Power Pin

[Neeraj]

Dear Community member,

We have developed a PCB for Air pollution measurement using STM32G473VET6 MCU. We were able to flash the program successfully, but we didn't receive any output from GPIO, UART, USB, etc. None of the peripherals are working except VCC, GND, and JTAG. Please guide us on how to resolve this issue.

best regards

Neeraj

Founder & CEO

Radifonics Solutions Pvt Ltd

Indira Nagar, Bangalore-560038

[waclawek.jan]

Start with a simple program, e.g. blinking a LED, on a "known good" board such as Nucleo.

After that, for the hardware issues, read AN5093.

JW

[###### · Accepted solution]

For hardware I would suggest looking at the BOOT0 / BOOT1 pin settings, any pull up resistors on reset circuitry, or your oscillator.

This is also a good reference for future:

http://www.efton.sk/STM32/gotcha/