mirror of
https://github.com/enjoyneering/AHT10.git
synced 2024-10-03 18:09:02 -04:00
Update AHT10.cpp
This commit is contained in:
enjoyneering
GitHub
parent
66f8802f8d
commit
22cd8087d6
100
src/AHT10.cpp
100
src/AHT10.cpp
@ -38,9 +38,10 @@
|
||||
Constructor
|
||||
*/
|
||||
/**************************************************************************/
|
||||
AHT10::AHT10(uint8_t address)
|
||||
AHT10::AHT10(uint8_t address, ASAIR_I2C_SENSOR sensorName)
|
||||
{
|
||||
_address = address;
|
||||
_address = address;
|
||||
_sensorName = sensorName;
|
||||
}
|
||||
|
||||
/**************************************************************************/
|
||||
@ -72,8 +73,11 @@ bool AHT10::begin(void)
|
||||
Wire.setClock(100000); //experimental! AVR I2C bus speed: 31kHz..400kHz/31000..400000, default 100000
|
||||
#endif
|
||||
|
||||
/* sensor initialization, load factory calibration coeff */
|
||||
return enableFactoryCalCoeff();
|
||||
delay(AHT10_POWER_ON_DELAY); //wait for sensor to initialize
|
||||
|
||||
setNormalMode(); //one measurement+sleep mode
|
||||
|
||||
return enableFactoryCalCoeff(); //load factory calibration coeff
|
||||
}
|
||||
|
||||
|
||||
@ -88,29 +92,34 @@ uint8_t AHT10::readRawData()
|
||||
{
|
||||
/* send measurment command */
|
||||
Wire.beginTransmission(_address);
|
||||
#if ARDUINO >= 100
|
||||
Wire.write(AHT10_START_MEASURMENT_CMD); //send measurment command
|
||||
#if (ARDUINO) >= 100
|
||||
Wire.write(AHT10_START_MEASURMENT_CMD); //send measurment command
|
||||
Wire.write(AHT10_DATA_MEASURMENT_CMD); //send measurment parameter
|
||||
Wire.write(AHT10_DATA_NOP); //send measurment parameter
|
||||
#else
|
||||
Wire.send(AHT10_START_MEASURMENT_CMD);
|
||||
Wire.send(AHT10_DATA_MEASURMENT_CMD);
|
||||
Wire.send(AHT10_DATA_NOP);
|
||||
#endif
|
||||
if (Wire.endTransmission(true) != 0) return AHT10_ERROR; //error handler, collision on I2C bus
|
||||
if (Wire.endTransmission(true) != 0) return AHT10_ERROR; //error handler, collision on I2C bus
|
||||
|
||||
if (getBusyBit() != 0x00) delay(AHT10_MEASURMENT_DELAY); //measurement delay
|
||||
if (getCalibrationBit() != 0x01) return AHT10_ERROR; //error handler, calibration coefficient turned off
|
||||
if (getBusyBit(AHT10_USE_READ_DATA) != 0x00) delay(AHT10_MEASURMENT_DELAY); //measurement delay
|
||||
|
||||
/* read 6-bytes from sensor */
|
||||
#if defined(_VARIANT_ARDUINO_STM32_)
|
||||
Wire.requestFrom(_address, 6);
|
||||
#else
|
||||
Wire.requestFrom(_address, 6, true); //true - send stop after transmission & release I2C bus
|
||||
Wire.requestFrom(_address, 6, true); //true - send stop after transmission & release I2C bus
|
||||
#endif
|
||||
if (Wire.available() != 6)
|
||||
{
|
||||
_rawDataBuffer[0] = AHT10_ERROR; //for condition when AHT10_USE_READ_DATA is used
|
||||
return AHT10_ERROR; //check rxBuffer & error handler, collision on the i2c bus
|
||||
_rawDataBuffer[0] = AHT10_ERROR; //for condition when AHT10_USE_READ_DATA is used
|
||||
return AHT10_ERROR; //check rxBuffer & error handler, collision on the i2c bus
|
||||
}
|
||||
|
||||
/* read 6 bytes from "wire.h" rxBuffer */
|
||||
#if ARDUINO >= 100
|
||||
#if (ARDUINO) >= 100
|
||||
for (uint8_t i = 0; i < 6 ; i++)
|
||||
{
|
||||
_rawDataBuffer[i] = Wire.read();
|
||||
@ -149,7 +158,7 @@ float AHT10::readTemperature(bool readI2C)
|
||||
|
||||
uint32_t temperature = ((uint32_t)(_rawDataBuffer[3] & 0x0F) << 16) | ((uint16_t)_rawDataBuffer[4] << 8) | _rawDataBuffer[5]; //20-bit raw temperature data
|
||||
|
||||
return (float)temperature * 200 / 1048576 - 50;
|
||||
return (float)temperature * 0.000191 - 50;
|
||||
}
|
||||
|
||||
|
||||
@ -160,7 +169,7 @@ float AHT10::readTemperature(bool readI2C)
|
||||
Read relative humidity, %
|
||||
|
||||
NOTE:
|
||||
- Prolonged exposure for 60 hours at humidity > 80% can lead to a
|
||||
- prolonged exposure for 60 hours at humidity > 80% can lead to a
|
||||
temporary drift of the signal +3%. Sensor slowly returns to the
|
||||
calibrated state at normal operating conditions.
|
||||
- relative humidity range 0%..100%
|
||||
@ -179,7 +188,7 @@ float AHT10::readHumidity(bool readI2C)
|
||||
|
||||
uint32_t rawData = (((uint32_t)_rawDataBuffer[1] << 16) | ((uint16_t)_rawDataBuffer[2] << 8) | (_rawDataBuffer[3])) >> 4; //20-bit raw humidity data
|
||||
|
||||
float humidity = (float)rawData * 100 / 1048576;
|
||||
float humidity = (float)rawData * 0.000095;
|
||||
|
||||
if (humidity < 0) return 0;
|
||||
if (humidity > 100) return 100;
|
||||
@ -202,7 +211,7 @@ bool AHT10::softReset(void)
|
||||
{
|
||||
Wire.beginTransmission(_address);
|
||||
|
||||
#if ARDUINO >= 100
|
||||
#if (ARDUINO) >= 100
|
||||
Wire.write(AHT10_SOFT_RESET_CMD);
|
||||
#else
|
||||
Wire.send(AHT10_SOFT_RESET_CMD);
|
||||
@ -212,6 +221,8 @@ bool AHT10::softReset(void)
|
||||
|
||||
delay(AHT10_SOFT_RESET_DELAY);
|
||||
|
||||
setNormalMode(); //reinitialize sensor registers after reset
|
||||
|
||||
return enableFactoryCalCoeff(); //reinitialize sensor registers after reset
|
||||
}
|
||||
|
||||
@ -223,24 +234,26 @@ bool AHT10::softReset(void)
|
||||
Set normal measurment mode
|
||||
|
||||
NOTE:
|
||||
- one measurement & power down
|
||||
- one measurement & power down??? no info in datasheet!!!
|
||||
*/
|
||||
/**************************************************************************/
|
||||
bool AHT10::setNormalMode(void)
|
||||
{
|
||||
Wire.beginTransmission(_address);
|
||||
|
||||
#if ARDUINO >= 100
|
||||
Wire.write(AHT10_INIT_CMD); //set command mode
|
||||
Wire.write(AHT10_INIT_CAL_ENABLE); //x,0,0,x,0,x,x,x
|
||||
#if (ARDUINO) >= 100
|
||||
Wire.write(AHT10_NORMAL_CMD);
|
||||
Wire.write(AHT10_DATA_NOP);
|
||||
Wire.write(AHT10_DATA_NOP);
|
||||
#else
|
||||
Wire.send(AHT10_INIT_CMD);
|
||||
Wire.send(AHT10_INIT_CAL_ENABLE);
|
||||
Wire.send(AHT10_NORMAL_CMD);
|
||||
Wire.send(AHT10_DATA_NOP);
|
||||
Wire.send(AHT10_DATA_NOP);
|
||||
#endif
|
||||
|
||||
if (Wire.endTransmission(true) != 0) return false; //safety check, make sure transmission complete
|
||||
|
||||
delay(AHT10_COMMAND_DELAY);
|
||||
delay(AHT10_CMD_DELAY);
|
||||
|
||||
return true;
|
||||
}
|
||||
@ -260,19 +273,20 @@ bool AHT10::setCycleMode(void)
|
||||
{
|
||||
Wire.beginTransmission(_address);
|
||||
|
||||
#if ARDUINO >= 100
|
||||
Wire.write(AHT10_INIT_CMD); //set command mode
|
||||
Wire.write(AHT10_INIT_CYCLE_MODE | AHT10_INIT_CAL_ENABLE); //x,0,1,x,0,x,x,x
|
||||
#if (ARDUINO) >= 100
|
||||
if (_sensorName != AHT20_SENSOR) Wire.write(AHT10_INIT_CMD); //set command mode
|
||||
else Wire.write(AHT20_INIT_CMD);
|
||||
Wire.write(AHT10_INIT_CYCLE_MODE | AHT10_INIT_CAL_ENABLE); //0,[0,1],0,[1],0,0,0
|
||||
Wire.write(AHT10_DATA_NOP);
|
||||
#else
|
||||
Wire.send(AHT10_INIT_CMD);
|
||||
if (_sensorName != AHT20_SENSOR) Wire.send(AHT10_INIT_CMD);
|
||||
else Wire.send(AHT20_INIT_CMD);
|
||||
Wire.send(AHT10_INIT_CYCLE_MODE | AHT10_INIT_CAL_ENABLE);
|
||||
Wire.send(AHT10_DATA_NOP);
|
||||
#endif
|
||||
|
||||
if (Wire.endTransmission(true) != 0) return false; //safety check, make sure transmission complete
|
||||
|
||||
delay(AHT10_COMMAND_DELAY);
|
||||
|
||||
return true;
|
||||
if (Wire.endTransmission(true) != 0) return false; //safety check, make sure transmission complete
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
@ -293,7 +307,7 @@ uint8_t AHT10::readStatusByte()
|
||||
if (Wire.available() != 1) return AHT10_ERROR; //check rxBuffer & error handler, collision on I2C bus
|
||||
|
||||
/* read byte from "wire.h" rxBuffer */
|
||||
#if ARDUINO >= 100
|
||||
#if (ARDUINO) >= 100
|
||||
return Wire.read();
|
||||
#else
|
||||
return Wire.receive();
|
||||
@ -333,17 +347,21 @@ bool AHT10::enableFactoryCalCoeff()
|
||||
/* load factory calibration coeff */
|
||||
Wire.beginTransmission(_address);
|
||||
|
||||
#if ARDUINO >= 100
|
||||
Wire.write(AHT10_INIT_CMD); //set command mode
|
||||
Wire.write(AHT10_INIT_CAL_ENABLE); //x,x,x,x,0,x,x,x
|
||||
#if (ARDUINO) >= 100
|
||||
if (_sensorName != AHT20_SENSOR) Wire.write(AHT10_INIT_CMD); //set command mode
|
||||
else Wire.write(AHT20_INIT_CMD);
|
||||
Wire.write(AHT10_INIT_CAL_ENABLE); //0,0,0,0,[1],0,0,0
|
||||
Wire.write(AHT10_DATA_NOP); //0,0,0,0,0,0,0,0
|
||||
#else
|
||||
Wire.send(AHT10_INIT_CMD);
|
||||
if (_sensorName != AHT20_SENSOR) Wire.send(AHT10_INIT_CMD);
|
||||
else Wire.send(AHT20_INIT_CMD);
|
||||
Wire.send(AHT10_INIT_CAL_ENABLE);
|
||||
Wire.send(AHT10_DATA_NOP);
|
||||
#endif
|
||||
|
||||
if (Wire.endTransmission(true) != 0) return false; //safety check, make sure transmission complete
|
||||
if (Wire.endTransmission(true) != 0) return false; //safety check, make sure transmission complete
|
||||
|
||||
delay(AHT10_COMMAND_DELAY);
|
||||
delay(AHT10_CMD_DELAY);
|
||||
|
||||
/*check calibration enable */
|
||||
if (getCalibrationBit() == 0x01) return true;
|
||||
@ -358,8 +376,8 @@ bool AHT10::enableFactoryCalCoeff()
|
||||
Read busy bit from status byte
|
||||
|
||||
NOTE:
|
||||
- 0, sensor idle
|
||||
- 1, sensor busy
|
||||
- 0, sensor idle & sleeping
|
||||
- 1, sensor busy & in measurement state
|
||||
*/
|
||||
/**************************************************************************/
|
||||
uint8_t AHT10::getBusyBit(bool readI2C)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user