基于stm32l476rg的mlx90614驱动代码

以下是基于STM32L476RG的MLX90614驱动代码，使用的是I2C通信协议：

#include "stm32l4xx_hal.h"

#define MLX90614_ADDR 0x5A
#define MLX90614_TOBJ1 0x07

I2C_HandleTypeDef hi2c1;

void MLX90614_Init(void)
{
  // 初始化I2C
  hi2c1.Instance = I2C1;
  hi2c1.Init.Timing = 0x00707CBB;
  hi2c1.Init.OwnAddress1 = 0;
  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  hi2c1.Init.OwnAddress2 = 0;
  hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
  if (HAL_I2C_Init(&hi2c1) != HAL_OK)
  {
    Error_Handler();
  }
}

float MLX90614_ReadTemp(void)
{
  uint8_t buffer[2];
  uint16_t raw;
  float temp;

  // 发送读取温度命令
  HAL_I2C_Mem_Read(&hi2c1, MLX90614_ADDR, MLX90614_TOBJ1, I2C_MEMADD_SIZE_8BIT, buffer, 2, HAL_MAX_DELAY);

  // 接收温度值并转换为摄氏度
  raw = (buffer[1] << 8) | buffer[0];
  temp = (float)raw * 0.02 - 273.15;

  return temp;
}

使用示例：

#include "MLX90614.h"

int main(void)
{
  float temp;

  // 初始化MLX90614
  MLX90614_Init();

  while (1)
  {
    // 读取温度值
    temp = MLX90614_ReadTemp();

    // 处理温度值
    // ...

    HAL_Delay(1000);
  }
}