Hi! I am unable to detect my STM32L4Q5 MCU with ST-Link V2. Do I need to buy the ST Link V3? How do I interface it with the JTAG/SWD programming port? I thought that STM32L4P5 and Q5 family were retro-pintopin-compatible with previous L4 families?

VNado.1 · ‎2020-10-22

Thanks!

Tesla DeLorean · ‎2020-10-23

You did mention JTAG, which is superset of SWD, typically using more pins.

You'll need a full complement if you want to do boundary scan or chain with other devices.

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VNado.1 · ‎2020-10-23

I think we are programming with SWD then if I understand correctly as we are using only NRST, SWDIO, SWCLK, 3.3V and GND

Here are the settings used for ST-link. It says unknown device

VNado.1 · ‎2020-10-23

Are there fake L4Q5?

VNado.1 · ‎2020-10-26

Hello everyone,

ST answered me back and apparently ST-link utility is now obselete and does not support these MCU. The new STM32CubeProgrammer worked with the chip!