hx711的官方hal库

HX711是一款ADC芯片，官方并没有提供HAL库。不过，你可以使用STM32CubeMX生成的HAL库来对HX711进行驱动。以下是一个简单的HX711驱动例程，可以供你参考：

#include "hx711.h"
#include "main.h"

extern TIM_HandleTypeDef htim2;

void HX711_Init(void)
{
  HAL_GPIO_WritePin(HX711_SCK_GPIO_Port, HX711_SCK_Pin, GPIO_PIN_RESET);
  HAL_GPIO_WritePin(HX711_DT_GPIO_Port, HX711_DT_Pin, GPIO_PIN_SET);
  HAL_Delay(100);
}

uint32_t HX711_Read(void)
{
  uint32_t count = 0;
  uint8_t i;

  HAL_GPIO_WritePin(HX711_SCK_GPIO_Port, HX711_SCK_Pin, GPIO_PIN_RESET);
  HAL_Delay(1);

  HAL_GPIO_WritePin(HX711_DT_GPIO_Port, HX711_DT_Pin, GPIO_PIN_SET);
  HAL_Delay(1);

  HAL_GPIO_WritePin(HX711_SCK_GPIO_Port, HX711_SCK_Pin, GPIO_PIN_SET);
  HAL_Delay(1);

  HAL_GPIO_WritePin(HX711_SCK_GPIO_Port, HX711_SCK_Pin, GPIO_PIN_RESET);
  HAL_Delay(1);

  for (i = 0; i < 24; i++)
  {
    HAL_GPIO_WritePin(HX711_SCK_GPIO_Port, HX711_SCK_Pin, GPIO_PIN_SET);
    HAL_Delay(1);

    count <<= 1;

    if (HAL_GPIO_ReadPin(HX711_DT_GPIO_Port, HX711_DT_Pin))
    {
      count++;
    }

    HAL_GPIO_WritePin(HX711_SCK_GPIO_Port, HX711_SCK_Pin, GPIO_PIN_RESET);
    HAL_Delay(1);
  }

  HAL_GPIO_WritePin(HX711_SCK_GPIO_Port, HX711_SCK_Pin, GPIO_PIN_SET);
  HAL_Delay(1);

  count ^= 0x800000;
  HAL_GPIO_WritePin(HX711_SCK_GPIO_Port, HX711_SCK_Pin, GPIO_PIN_RESET);
  HAL_Delay(1);

  return count;
}

float HX711_GetWeight(uint8_t times)
{
  uint32_t avg = 0;
  uint8_t i;

  for (i = 0; i < times; i++)
  {
    avg += HX711_Read();
    HAL_Delay(10);
  }

  avg /= times;
  return (float)avg / HX711_CALIBRATION;
}

void HX711_Tare(uint8_t times)
{
  uint32_t sum = 0;
  uint8_t i;

  for (i = 0; i < times; i++)
  {
    sum += HX711_Read();
    HAL_Delay(10);
  }

  HX711_OFFSET = sum / times;
}

void HX711_SetScale(float scale)
{
  HX711_SCALE = scale;
}

float HX711_GetUnits(uint8_t times)
{
  return (HX711_GetWeight(times) - HX711_OFFSET) / HX711_SCALE;
}

需要注意的是，以上代码中的HX711_SCK_Pin和HX711_DT_Pin需要在STM32CubeMX中进行配置。此外，HX711_CALIBRATION、HX711_OFFSET和HX711_SCALE需要在程序中定义，分别代表校准值、偏移量和比例系数。