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NSemrHomeInit
NSemrHomeInit
Associate III
October 16, 2020
Solved

Couldn't set and reset a GPIO using the HAL_GPIO_Write function

  • October 16, 2020
  • 1 reply
  • 1478 views

Dear ST Hello,

I couldn't understand why I couldn't set and reset the PB4 GPIO. I am trying to visualize the GpIO signal using an oscilloscope.

I am using CubeMx for this project

0693W000004K6jXQAS.pngI am using this GPIO for CS with SPI3.

0693W000004K6kVQAS.png 

HAL_GPIO_WritePin(SPI3_CS_GPIO_Port, SPI3_CS_Pin, GPIO_PIN_RESET);
	status = HAL_SPI_TransmitReceive(&hspi3, (uint8_t*)aTxBuffer, (uint8_t *)aRxBuffer, BUFFERSIZE, 5000);
	HAL_GPIO_WritePin(SPI3_CS_GPIO_Port, SPI3_CS_Pin, GPIO_PIN_SET);

Thank you in advance

S.Tarik

This topic has been closed for replies.
Best answer by TDK

Why do you think you can't set/reset PB4? Did you start the clock? These should be done in the generated code, but you can also check the GPIO registers to see if it's set correctly.

1 reply

TDK
TDKBest answer
October 16, 2020

Why do you think you can't set/reset PB4? Did you start the clock? These should be done in the generated code, but you can also check the GPIO registers to see if it's set correctly.

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NSemrHomeInit
NSemrHomeInitAuthor
Associate III
October 18, 2020

I have a ground problem, it's okay now, Thank you.

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