Component: Temp / Humidity (Grove 101020019) (101020019) (Environmental)
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Jump to navigationJump to search| Author | Matrix TSL |
| Version | 1.2 |
| Category | Environmental |
Contents
Temp / Humidity (Grove 101020019) component
The DHT22 temperature and humidity sensor is a popular sensor allowing the ambient temperature and relative humidity to be monitored digitally. Humidity Range = 0% - 100% +/- 2% Temperature Range = -40 - 80 Degrees C +/- 0.5 Degrees C
Component Source Code
Please click here to download the component source project: FC_Comp_Source_Grove_DHT22.fcfx
Please click here to view the component source code (Beta): FC_Comp_Source_Grove_DHT22.fcfx
Detailed description
No detailed description exists yet for this component
Examples
No additional examples
Macro reference
GetHumidityFloat
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GetHumidityFloat |
| Gets the humidity returned by calling SampleSensor as a floating point number. If humidity is 15.8 % then this function would return 15.8. | |
 - FLOAT
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Return |
GetHumidityReal
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GetHumidityReal |
| Gets the real number portion of the humidity returned by calling SampleSensor. If humidity is 15.8 % then this function would return 8. | |
 - INT
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Return |
GetHumidityString
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GetHumidityString |
| Gets the humidity returned by calling SampleSensor as a string. If humidity is 15.8 % then this function would return "15.8". | |
 - STRING
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Return |
GetHumidityWhole
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GetHumidityWhole |
| Gets the whole number portion of the humidity returned by calling SampleSensor. If humidity is 15.8 % then this function would return 15. | |
| - INT
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Return |
GetTempFloat
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GetTempFloat |
| Gets the temperature returned by calling SampleSensor as a floating point number. If temperature is 15.8 degrees C then this function would return 15.8. | |
| - FLOAT
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Return |
GetTempReal
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GetTempReal |
| Gets the real number portion of the temperature returned by calling SampleSensor. If temperature is 15.8 degrees C then this function would return 8. | |
| - INT
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Return |
GetTempString
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GetTempString |
| Gets the temperature returned by calling SampleSensor as a string. If temperature is 15.8 degrees C then this function would return "15.8". | |
| - STRING
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Return |
GetTempWhole
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GetTempWhole |
| Gets the whole number portion of the temperature returned by calling SampleSensor. If temperature is 15.8 degrees C then this function would return 15. | |
| - INT
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Return |
SampleSensor
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SampleSensor |
| Communicates with the DHT11 sensor and receives the temperature and humidity readings. Returns 0 for success, 1 for no communication detected and 2 for checksum error. | |
 - BYTE
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Return |
Property reference
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Properties |
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SIG Pin |
| Microcontroller I/O Pin connected to the DHT11 sensor data pin. | |
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Use Checksum |
| The checksum value is used to ensure the data being received is correct. Yes = Only receive data if checksum is correct No = Ignore checksum | |
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Advanced Settings |
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Clock Adjustment |
| On 8-bit PIC devices the timings can be a little tight as slower clock speeds and so we implement an adjustment factor to allow the sensor to function. Auto mode will attempt to automatically calculate a correct adjustment factor. Manual mode will allow you to set your own adjustment factor. | |
