Cannot find a clear mapping from physical ports/pins to the software GPIO pins

[kyrkap]

Hello everyone,

I am new to STM32 architecture and configuration. I am trying to configure new GPIO ports and pins in an STM32H745i-DISCO board. I had some previous code for the pin configuration, but I could not 100% map it to the user manual for the board. The code is the following. I could not match these definitions to any from the manual. Could anyone help me with the mapping for pins D0-D15 on the board? Thank you very much

#define LD6_Port GPIOD
#define LD7_Port GPIOI
#define LD8_Port GPIOB

#define LD9_Port GPIOC
#define LD10_Port GPIOA

#define B1_Port GPIOC

#define LD6_Pin GPIO_PIN_3
#define LD7_Pin GPIO_PIN_2
#define LD8_Pin GPIO_PIN_15

[kyrkap]

Just with the HAL_GPIO_WritePin function you mean? D10 is working perfectly (new pin). D14 and 15 not at all

[mƎALLEm]

Please show your code with HAL implementation by toggling GPIOD pin 12 and 13. They correspond respectively to CN2/D15 and D14.

[kyrkap]

typedef unsigned int uint;
typedef unsigned int uint32;
typedef uint16_t uint16;
typedef uint8_t uint8;
typedef uint8_t byte;

#define LD6_Port GPIOD
#define LD7_Port GPIOI
#define LD8_Port GPIOB

#define LD9_Port GPIOD
#define LD10_Port GPIOD

#define B1_Port GPIOC

#define LD6_Pin GPIO_PIN_3
#define LD7_Pin GPIO_PIN_2
#define LD8_Pin GPIO_PIN_15

#define LD9_Pin GPIO_PIN_13 
#define LD10_Pin GPIO_PIN_12 

#define B1_Pin GPIO_PIN_13

typedef struct GPIO_Pin {
	GPIO_TypeDef* port;
	uint16_t pin;
	GPIO_PinState initialState;
	uint32_t state;
} GPIO_Pin;

GPIO_Pin outputs[] = {
	{.port = LD6_Port, .pin = LD6_Pin, .initialState = GPIO_PIN_SET, .state = 0}, 
	{.port = LD7_Port, .pin = LD7_Pin, .initialState = GPIO_PIN_SET, .state = 0},
	{.port = LD8_Port, .pin = LD8_Pin, .initialState = GPIO_PIN_RESET, .state = 0},
	{.port = LD9_Port, .pin = LD9_Pin, .initialState = GPIO_PIN_RESET, .state = 0},
	{.port = LD10_Port, .pin = LD10_Pin, .initialState = GPIO_PIN_RESET, .state = 0},
};

const uint8_t outputCount = sizeof(outputs) / sizeof(GPIO_Pin);

void initOutputs() {

	// Common settings
	GPIO_InitTypeDef gpioInit = { 0 };
	gpioInit.Mode = GPIO_MODE_OUTPUT_PP;
	gpioInit.Pull = GPIO_NOPULL;
	gpioInit.Speed = GPIO_SPEED_FREQ_LOW;


	for (uint16 i = 0; i < outputCount; i++) {
		HAL_GPIO_WritePin(outputs[i].port, outputs[i].pin, outputs[i].initialState);
		gpioInit.Pin = outputs[i].pin;
		HAL_GPIO_Init(outputs[i].port, &gpioInit);
	}
}

void toggleLed(GPIO_Led led) {
	HAL_GPIO_TogglePin(outputs[led].port, outputs[led].pin);
}

void setLed(GPIO_Led led, GPIO_State state) {
	HAL_GPIO_WritePin(outputs[led].port, outputs[led].pin, state == LOW ? GPIO_PIN_RESET : GPIO_PIN_SET);
	if (state != outputs[led].initialState) {
		outputs[led].state = 50;
	}
}

[mƎALLEm]

No.

I requested a test like this in a while loop in main.c:

while(1)
{
  HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_12);
  HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_13);
  HAL_Delay(500);
}

Are you seeing GPIOD pin12/pin13 are toggling?

[mƎALLEm]

FYI,
This is just to confirm my suspicion in my previous comment regarding the discrepancy in the Arduino D0/D1 CN6 connector in table 8: PB6 and PB7 will be respectively replaced by PB10 and PB11. Also USART1 will be replaced by USART3.
The internal Ticket 183533 has been opened to fix the issue.

[mƎALLEm]

---

@mƎALLEm wrote:

FYI,
This is just to confirm my suspicion in my previous comment regarding the discrepancy in the Arduino D0/D1 CN6 connector in table 8: PB6 and PB7 will be respectively replaced by PB10 and PB11. Also USART1 will be replaced by USART3.
The internal Ticket 183533 has been opened to fix the issue.

---

Document fixed. It was published on the ST website.