使用stm32L476实现ccs811空气质量传感器的C语言代码

很高兴为您回答这个问题！以下是一份基于C语言的使用stm32L476实现ccs811空气质量传感器的代码：

//定义I2C总线地址
#define I2C_ADDRESS 0x5A

I2C_HandleTypeDef hi2c1;

void CCS811_Init(void)
{
uint8_t data[4];

//软复位CCS811传感器
data[0] = 0x11;
data[1] = 0xE5;
HAL_I2C_Master_Transmit(&hi2c1, I2C_ADDRESS, data, 2, 100);
HAL_Delay(10);

//读取硬件ID
data[0] = 0x20;
HAL_I2C_Master_Transmit(&hi2c1, I2C_ADDRESS, data, 1, 100);
HAL_I2C_Master_Receive(&hi2c1, I2C_ADDRESS, data, 1, 100);

if(data[0] != 0x81)
{
while(1);//硬件ID不匹配
}

//读取软件版本号
data[0] = 0x21;
HAL_I2C_Master_Transmit(&hi2c1, I2C_ADDRESS, data, 1, 100);
HAL_I2C_Master_Receive(&hi2c1, I2C_ADDRESS, data, 1, 100);

//设置测量周期
data[0] = 0x01;
data[1] = 0x60;//测量周期为1秒
HAL_I2C_Master_Transmit(&hi2c1, I2C_ADDRESS, data, 2, 100);

//使能测量模式
data[0] = 0x01;
data[1] = 0x10;//测量模式
HAL_I2C_Master_Transmit(&hi2c1, I2C_ADDRESS, data, 2, 100);
}

void CCS811_Read_Datas(void)
{
uint8_t data[8];
uint16_t co2, tvoc;

//读取数据
data[0] = 0x02;
HAL_I2C_Master_Transmit(&hi2c1, I2C_ADDRESS, data, 1, 100);
HAL_I2C_Master_Receive(&hi2c1, I2C_ADDRESS, data, 8, 100);

co2 = (data[0] << 8) | data[1];
tvoc = (data[2] << 8) | data[3];
}

以上就是使用stm32L476实现ccs811空气质量传感器的C语言代码，希望能对您有所帮助！