SHT30 IIC_ADDRESS 0x44
SHT30的测量较为简单，只需要一条指令即可测量
1.测量指令：uint8_t START_MEASUIRE_CMD[2] = { 0x2c, 0x06 };
2.读取指令：HAL_I2C_Master_Receive(&hi2c1, I2C_ADDRESS, rawData, 3, 0xFF);
3.计算结果
int main(void) {
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_I2C1_Init();
MX_USART1_UART_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
// uint8_t SOFT_RESET_CMD[2]={0x00,0x06};
// HAL_I2C_Master_Transmit(&hi2c1, I2C_ADDRESS , SOFT_RESET_CMD, 2, 0xff);
HAL_Delay(80);
char logdata[50];
uint8_t rawData[6];
float temperature, humidity;
while (1) {
uint8_t START_MEASUIRE_CMD[2] = { 0x2c, 0x06 };
HAL_I2C_Master_Transmit(&hi2c1, I2C_ADDRESS, START_MEASUIRE_CMD, 2,0xff);
HAL_Delay(80);
HAL_I2C_Master_Receive(&hi2c1, I2C_ADDRESS, rawData, 3, 0xFF);
uint16_t temRaw = (rawData[0] << 8 | rawData[1]);
uint16_t humiRaw = (rawData[3] << 8 | rawData[4]);
temperature = -45 + 175 * (temRaw / 65535.0);
humidity = 100 * (humiRaw / 65535.0);
int uartLength=sprintf(logdata,"temperature:%.2f humidity:%.2f \r",temperature,humidity);
HAL_UART_Transmit(&huart1, logdata, uartLength, 0xff);
HAL_Delay(200);
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
uint16_t temRaw = (rawData[0] << 8 | rawData[1]);
uint16_t humiRaw = (rawData[3] << 8 | rawData[4]);
temperature = -45 + 175 * (temRaw / 65535.0);
humidity = 100 * (humiRaw / 65535.0);
int uartLength=sprintf(logdata,"temperature:%.2f humidity:%.2f \r",temperature,humidity);
HAL_UART_Transmit(&huart1, logdata, uartLength, 0xff);