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OTosu.1
OTosu.1
Associate
December 8, 2020
Solved

Where to find the RCC Register and GPIO Register

  • December 8, 2020
  • 2 replies
  • 1144 views

Hi,

I try to find the RCC and the GPIO register for the STM32l432KBU, but cant find it in the datasheet. i dont know if i'm looking wrong but i just cant find it. I need the Registers to enable the uart.

Thanks for reading:grinning_face: !!

bye,

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2 replies

TDK
TDKBest answer
December 8, 2020

They're in the reference manual:

https://www.st.com/resource/en/reference_manual/dm00151940-stm32l41xxx42xxx43xxx44xxx45xxx46xxx-advanced-armbased-32bit-mcus-stmicroelectronics.pdf

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waclawek.jan
waclawek.jan
Super User
December 8, 2020

While it's always good to look it up in the RM; in software, you better rely on the CMSIS-mandated device header

https://github.com/STMicroelectronics/STM32CubeL4/blob/master/Drivers/CMSIS/Device/ST/STM32L4xx/Include/stm32l432xx.h

RCC->APB1ENR1 |= RCC_APB1ENR1_USART2EN;

JW

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