STM32H747 PA0_C & PA1_C input reading issue

[Bertrand1]

Hello,

I am working with a STM32H747XI. I have connected a digital input on PA0_C & PA1_C.

I used CubeMX for the initialisation.

The initialisation code is :

/*Configure GPIO pins : UI_ENC0_Pin UI_ENC1_Pin */
  GPIO_InitStruct.Pin = UI_ENC0_Pin|UI_ENC1_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

When I read the pin, it stays always at 0 (GPIO_PIN_RESET)

bpState1 = HAL_GPIO_ReadPin(GPIOA, UI_ENC0_Pin);
bpState2 = HAL_GPIO_ReadPin(GPIOA, UI_ENC1_Pin);

The pin PA0 is at " Reset State".

I dont know what I have to do to solve it.

Many thanks for your help.

Bertrand

[Jaroslav JANOS]

Hello Bertrand,

are the analog switches between PA0 & PA0_C and PA1 & PA1_C closed?

HAL_SYSCFG_AnalogSwitchConfig(SYSCFG_SWITCH_PA0, SYSCFG_SWITCH_PA0_CLOSE);
HAL_SYSCFG_AnalogSwitchConfig(SYSCFG_SWITCH_PA1, SYSCFG_SWITCH_PA1_CLOSE);

Jaroslav

[Bertrand1]

I will check and try and revert to you.

Thank you.

Bertrand

[Bertrand1 · Accepted solution]

Hello,

Sorry for the late feedback.

It works!

Many thanks.

Should I report as a bug for CubeMx?

Bertrand

[Jaroslav JANOS]

Hello Bertrand,

I'm glad it worked. Concerning the CubeMX bug, I will take care of it.

Jaroslav