Problem READING PIN

Hello everyone, I am trying to read one pin with the HAL libraries, but i can not. This is my configuration:

1) I want to read the "BUTTON" pin ( PB3/PB4/PB5/PB6 )

2 I am doing this:

GPIO_InitStruct.Mode = GPIO_MODE_INPUT;

GPIO_InitStruct.Pull = GPIO_NOPULL;

GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

GPIO_InitStruct.Pin = GPIO_PIN_5;

HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_5)){

THE PROGRAM NEVER ENTERS HERE, NO MATERS THE STATE OF THE PIN

}

What i am doing wrong??

Thanks a lot!

This topic has been closed for replies.

Best answer by KnarfB

no. LED2 is on GPIOA.

__HAL_RCC_GPIOB_CLK_ENABLE();

To get an idea how HAL works, don't hesitate generating code in STCubeIDE and studying it before rolling your own.

Super User

Did you enable the GPIOB clock?

Associate

I just did this :

LED2_GPIO_CLK_ENABLE();

But i dont know if this is for gpioB

KnarfBBest answer

Super User

no. LED2 is on GPIOA.

__HAL_RCC_GPIOB_CLK_ENABLE();

To get an idea how HAL works, don't hesitate generating code in STCubeIDE and studying it before rolling your own.

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