micro_climate/Drivers/Tmp117/tmp117.c

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#include "tmp117.h"
#include "i2c.h"
// 初始化温度传感器连续转换模式64次平均
HAL_StatusTypeDef TMP117_Init(void)
{
// 配置值:连续转换模式 + AVG=64 (0x00A0)
uint8_t config_data[2] = {0x00, 0xA0}; // 高字节在前
return HAL_I2C_Mem_Write(&hi2c1, TMP117_ADDR << 1, TMP117_CONFIG_REG,
I2C_MEMADD_SIZE_8BIT, config_data, 2, 100);
}
// 从寄存器读取双字节数据
HAL_StatusTypeDef TMP117_Read(uint8_t reg, uint8_t *buffer) {
return HAL_I2C_Mem_Read(&hi2c1, TMP117_ADDR << 1, reg,
I2C_MEMADD_SIZE_8BIT, buffer, 2, 100);
}
// 获取温度值(单位:℃)
HAL_StatusTypeDef TMP117_Get_Temp(float *temp)
{
uint8_t raw_data[2] = {0};
int16_t temp_raw;
if (HAL_OK == TMP117_Read(TMP117_TEMP_REG, raw_data)) {
temp_raw = (raw_data[0] << 8) | raw_data[1];
*temp = temp_raw * 0.0078125f;
}
else
{
*temp = 0;
return HAL_ERROR;
}
if(*temp <= -60)
{
*temp = -60;
}
if(*temp >= 150)
{
*temp = 150;
}
return HAL_OK;
}