TMP117温度传感器STM32 I2C温度读取

TMP117温度传感器 stm32 I2C温度读取

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一、硬件原理图

就两根数据线SCLSDA读取，ALERT不涉及温度计算

二、CUBEMXI2C接口配置

按照对应GPIO口配置

三、代码

#define TMP117_Write 0xA0  //写地址
#define TMP117_Read 0x90 //读地址
void temperature_measurement()
{
	  uint8_t WriteBuffer[BufferSize_tmp],ReadBuffer[BufferSize_tmp];    //读写数组
		uint8_t temperature_buff[4];
	   int16_t val;
	
	   HAL_I2C_Mem_Read(&hi2c1, TMP117_Read, 0, I2C_MEMADD_SIZE_8BIT,ReadBuffer,4, 0xff); // 读取I2C数值
        val = ((int16_t)ReadBuffer[0] << 8)| ReadBuffer[1] ;  //原始数值
        temperature=val * 0.0078125;  //比例系数
			  temperature_out=temperature*100;  //发送温度*100
		  	temperature_buff[0] =  (temperature_out>>8);
				temperature_buff[1] =  temperature_out;
}