stm32 pwm 呼吸灯

只看该作者 · 2021-9-2 17:16

#include "main.h"
#include "stm32f0xx_hal.h"

/* USER CODE BEGIN Includes */
int i=0;
/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/
TIM_HandleTypeDef htim3;

UART_HandleTypeDef huart1;

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_TIM3_Init(void);
void HAL_TIM_MspPostInit(TIM_HandleTypeDef *htim);

/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/

/* USER CODE END PFP */

/* USER CODE BEGIN 0 */
//ÖÐ¶Ï´¦Àí
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_1|GPIO_PIN_2);
}

//¶¨Ê±Æ÷×ÔÔöº¯Êý
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
i++;
}

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  *
  * @retval None
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART1_UART_Init();
  MX_TIM3_Init();
  /* USER CODE BEGIN 2 */
HAL_TIM_Base_Start_IT(&htim3);
HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_3);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {

  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

/*uint8_t data = 0;
HAL_UART_Receive(&huart1, &data, 1, 0);

if(data == 'l')
{
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2, GPIO_PIN_RESET);
HAL_UART_Transmit(&huart1, &data, 1, 0);
}
else if(data == 'h')
{
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2, GPIO_PIN_SET);
HAL_UART_Transmit(&huart1, &data, 1, 0);
} */

int j;
for(j=100;j>=50;j--)
{
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, j);
HAL_Delay(15);
}
for(j=50;j<=100;j++)
{
__HAL_TIM_SET_COMPARE(&htim3, TIM_CHANNEL_3, j);
HAL_Delay(15);
}

  }
  /* USER CODE END 3 */

}

只看该作者 · 2021-9-2 19:38

是用的什么片子？