This repository has been archived on 2024-10-30. You can view files and clone it, but cannot push or open issues or pull requests.
PTR-Events/RTE/Hesso_pack/ext_buttons.c

59 lines
1.7 KiB
C
Raw Normal View History

#include "stm32f7xx_hal.h"
#include "ext_buttons.h"
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
int32_t Ext_Buttons_Init (void) {
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOG_CLK_ENABLE();
__HAL_RCC_GPIOI_CLK_ENABLE();
/* Configure GPIO pin: PI2 (BTN_0) */
GPIO_InitStruct.Pin = GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
/* Configure GPIO pin: PI3 (BTN_1) */
GPIO_InitStruct.Pin = GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
/* Configure GPIO pin: PG7 (BTN_2) */
GPIO_InitStruct.Pin = GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
/* Configure GPIO pin: PG6 (BTN_3) */
GPIO_InitStruct.Pin = GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
return 0;
}
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
uint32_t Ext_Buttons_GetState (void) {
uint32_t val = 0;
if (HAL_GPIO_ReadPin(GPIOI, GPIO_PIN_2) == GPIO_PIN_RESET) {
val |= 1;
}
if (HAL_GPIO_ReadPin(GPIOI, GPIO_PIN_3) == GPIO_PIN_RESET) {
val |= 2;
}
if (HAL_GPIO_ReadPin(GPIOG, GPIO_PIN_7) == GPIO_PIN_RESET) {
val |= 4;
}
if (HAL_GPIO_ReadPin(GPIOG, GPIO_PIN_6) == GPIO_PIN_RESET) {
val |= 8;
}
return val;
}