STM32F103C8T6驱动hx711代码

下面是使用STM32F103C8T6驱动hx711的代码示例，其中使用了HAL库：

#include "main.h"
#include "stm32f1xx_hal.h"

/* HX711 PIN definition */
#define HX711_DOUT_Pin GPIO_PIN_6
#define HX711_DOUT_GPIO_Port GPIOB
#define HX711_PD_SCK_Pin GPIO_PIN_7
#define HX711_PD_SCK_GPIO_Port GPIOB

/* HX711 Function Prototypes */
void HX711_Init(void);
uint32_t HX711_Read(void);

/* Variables */
uint32_t weight;

/* Main function */
int main(void)
{
  /* MCU Configuration */
  HAL_Init();
  SystemClock_Config();

  /* Initialize HX711 */
  HX711_Init();

  while (1)
  {
    /* Read weight from HX711 */
    weight = HX711_Read();

    /* Do something with the weight data */
    // ...
  }
}

/* HX711 Initialization function */
void HX711_Init(void)
{
  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /* Configure HX711 DOUT pin */
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  GPIO_InitStruct.Pin = HX711_DOUT_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(HX711_DOUT_GPIO_Port, &GPIO_InitStruct);

  /* Configure HX711 PD SCK pin */
  GPIO_InitStruct.Pin = HX711_PD_SCK_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(HX711_PD_SCK_GPIO_Port, &GPIO_InitStruct);

  /* Set HX711 PD SCK pin high */
  HAL_GPIO_WritePin(HX711_PD_SCK_GPIO_Port, HX711_PD_SCK_Pin, GPIO_PIN_SET);

  /* Wait for HX711 to settle */
  HAL_Delay(100);
}

/* HX711 Read function */
uint32_t HX711_Read(void)
{
  /* Variables */
  uint32_t data = 0;

  /* Set HX711 PD SCK pin low */
  HAL_GPIO_WritePin(HX711_PD_SCK_GPIO_Port, HX711_PD_SCK_Pin, GPIO_PIN_RESET);

  /* Wait for HX711 to settle */
  HAL_Delay(1);

  /* Read data from HX711 */
  for (int i = 0; i < 24; i++)
  {
    HAL_GPIO_WritePin(HX711_PD_SCK_GPIO_Port, HX711_PD_SCK_Pin, GPIO_PIN_SET);

    data = data << 1;
    data |= HAL_GPIO_ReadPin(HX711_DOUT_GPIO_Port, HX711_DOUT_Pin);

    HAL_GPIO_WritePin(HX711_PD_SCK_GPIO_Port, HX711_PD_SCK_Pin, GPIO_PIN_RESET);
  }

  /* Set HX711 PD SCK pin high */
  HAL_GPIO_WritePin(HX711_PD_SCK_GPIO_Port, HX711_PD_SCK_Pin, GPIO_PIN_SET);

  /* Wait for HX711 to settle */
  HAL_Delay(1);

  /* Check if data is negative */
  if (data & 0x800000)
  {
    data = ~data + 1;
  }

  return data;
}

/* System Clock Configuration */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
                                | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

需要注意的是，该代码只是一个简单的示例，实际使用中还需要根据具体的硬件电路和HX711的工作原理进行相应的修改和调整。如果您不熟悉HX711的工作原理和使用方法，建议先阅读HX711的相关资料和文档。