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Pavel Krupets
Pavel Krupets
Associate III
October 30, 2018
Question

STM32L496 VDDIO2 / GPIOG pins

  • October 30, 2018
  • 1 reply
  • 661 views

1. Do I need to provide power from different regulator for VDDIO2 pins or if I use the same level (3.3V) can I use VDD? I simply need lots of GPIO pins.

2. LL_PWR_EnableVddIO2 has no effect in my case. IsEnabledVddIO2 always returns 0. I did wait for PVMO2 to reset before enabling VDDIO2.

I also tried my code on NUCLEO 144 STM32L496ZG. It doesn't work there either.

Am I missing something?

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    1 reply

    Pavel Krupets
    Pavel KrupetsAuthor
    Associate III
    October 30, 2018

    Oh. Lame. I screwed up. I forgot:

    LL_APB1_GRP1_ EnableClock(LL_APB1_GRP1_PERIPH_PWR);

    Well if you run into problem lile this check clocks 1st. I started with checking if all pins were soldered properly and if power gets everywhere. ROFL.

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