SHT35系列溫濕度傳感器的單片機例程分享

ID:383873 · 發表于 2018-8-14 13:18

最近采購了一只溫濕度傳感器SHT35，選的防水的那種，一共四根接線：VCC、GND、SDA、SCK從店家那里要的例程給大家分享一下，有需要的可以直接下載。

int main(void){
//==============================================================================
etError error; // error code
u32t serialNumber;// serial number
regStatus status; // sensor status
ft temperature; // temperature [癈]
ft humidity; // relative humidity [%RH]
bt heater; // heater, false: off, true: on
SystemInit();
Led_Init();
UserButton_Init();
EvalBoardPower_Init();
SHT3X_Init(0x45); // Address: 0x44 = Sensor on EvalBoard connector
// 0x45 = Sensor on EvalBoard
// wait 50ms after power on
DelayMicroSeconds(50000);
error = SHT3x_ReadSerialNumber(&serialNumber);
//if(error != NO_ERROR){}
// wait 50ms after serial number read
DelayMicroSeconds(50000);
// demonstrate a single shot measurement with clock-stretching
error = SHT3X_GetTempAndHumi(&temperature, &humidity, REPEATAB_HIGH, MODE_CLKSTRETCH, 50);
//if(error != NO_ERROR){}
// wait 50ms after measurment
DelayMicroSeconds(50000);
// demonstrate a single shot measurement with polling and 50ms timeout
error = SHT3X_GetTempAndHumi(&temperature, &humidity, REPEATAB_HIGH, MODE_POLLING, 50);
//if(error != NO_ERROR){}
// wait 50ms after measurment
DelayMicroSeconds(50000);
// loop forever
while(1)
{
error = NO_ERROR;
// loop while no error
while(error == NO_ERROR)
{
// read status register
error |= SHT3X_ReadStatus(&status.u16);
if(error != NO_ERROR) break;
// check if the reset bit is set after a reset or power-up
if(status.bit.ResetDetected)
{
// clear reset flag
error = SHT3X_ClearAllAlertFlags();
if(error != NO_ERROR) break;
//start periodic measurement, with high repeatability and 1 measurements per second
error = SHT3X_StartPeriodicMeasurment(REPEATAB_HIGH, FREQUENCY_1HZ);
if(error != NO_ERROR) break;
//switch green LED on
LedGreenOn();
}
// read measurment buffer
error = SHT3X_ReadMeasurementBuffer(&temperature, &humidity);
if(error == NO_ERROR)
{
// flash blue LED to signalise new temperature and humidity values
LedBlueOn();
DelayMicroSeconds(10000);
LedBlueOff();
}
else if (error == ACK_ERROR)
{
// there were no new values in the buffer -> ignore this error
error = NO_ERROR;
}
else break;
// read heater status
heater = status.bit.HeaterStatus ? TRUE : FALSE;
// if the user button is not pressed ...
if(ReadUserButton() == 0)
{
// ... and the heater is on
if(heater)
{
// switch off the sensor internal heater
error |= SHT3X_DisbaleHeater();
if(error != NO_ERROR) break;
}
}
else
// if the user button is pressed ...
{
// ... and the heater is off
if(!heater)
{
// switch on the sensor internal heater
error |= SHT3X_EnableHeater();
if(error != NO_ERROR) break;
}
}
// wait 100ms
DelayMicroSeconds(100000);
}
// in case of an error ...
// ... switch green and blue LED off
LedGreenOff();
LedBlueOff();
// ... try first a soft reset ...
error = SHT3X_SoftReset();
// ... if the soft reset fails, do a hard reset
if(error != NO_ERROR)
{
SHT3X_HardReset();
}
// flash green LED to signalise an error
LedGreenOn();
DelayMicroSeconds(10000);
LedGreenOff();
}
}