Difference between revisions of "Component: Temp / Humidity (DHT11) (Environmental)"

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==Component Source Code==
 
==Component Source Code==
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 +
Please click here to download the component source project: [https://www.flowcode.co.uk/wikicopy/componentsource/FC_Comp_Source_DHT11.fcfx FC_Comp_Source_DHT11.fcfx]
  
 
Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_DHT11.fcfx FC_Comp_Source_DHT11.fcfx]
 
Please click here to view the component source code (Beta): [https://www.flowcode.co.uk/FlowchartView/?wfile=componentsource/FC_Comp_Source_DHT11.fcfx FC_Comp_Source_DHT11.fcfx]
  
 
==Detailed description==
 
==Detailed description==
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 +
  
  
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==Examples==
 
==Examples==
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 +
  
  
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==Macro reference==
 
==Macro reference==
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
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|-
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| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetTempWhole'''
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|-
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| colspan="2" | 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. 
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|-
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|-
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-s16-icon.png]] - INT
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
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|}
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
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|-
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| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetHumidityFloat'''
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|-
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| colspan="2" | Gets the humidity returned by calling SampleSensor as a floating point number.  
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|-
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|-
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-f32-icon.png]] - FLOAT
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
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|}
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
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|-
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| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetTempString'''
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|-
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| colspan="2" | Gets the temperature returned by calling SampleSensor as a string.  
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|-
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|-
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-string-icon.png]] - STRING
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
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|}
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
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|-
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| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetHumidityString'''
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|-
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| colspan="2" | Gets the humidity returned by calling SampleSensor as a string.  
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|-
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|-
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-string-icon.png]] - STRING
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
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|}
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 +
 +
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 +
|-
 +
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 +
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetHumidityWhole'''
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|-
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| colspan="2" | Gets the whole number portion of the humidity returned by calling SampleSensor. If humidity is 15.8 % then this function would return 15. 
 +
|-
 +
|-
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-s16-icon.png]] - INT
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
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|}
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 +
 +
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 +
|-
 +
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 +
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetTempReal'''
 +
|-
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| colspan="2" | 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. 
 +
|-
 +
|-
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-s16-icon.png]] - INT
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
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|}
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 +
 +
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 +
|-
 +
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 +
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetHumidityReal'''
 +
|-
 +
| colspan="2" | Gets the real number portion of the humidity returned by calling SampleSensor. If humidity is 15.8 % then this function would return 8. 
 +
|-
 +
|-
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-s16-icon.png]] - INT
 +
| width="90%" style="border-top: 2px solid #000;" | ''Return''
 +
|}
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 +
 +
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 +
|-
 +
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 +
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''SampleSensor'''
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|-
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| colspan="2" | 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. 
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|-
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|-
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-u8-icon.png]] - BYTE
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
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|}
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 +
|-
 +
| width="10%" align="center" style="background-color:#D8C9D8;" align="center" | [[File:Fc9-comp-macro.png]]
 +
| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''GetTempFloat'''
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|-
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| colspan="2" | Gets the temperature returned by calling SampleSensor as a floating point number.  
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|-
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|-
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| width="10%" align="center" style="border-top: 2px solid #000;" | [[File:Fc9-f32-icon.png]] - FLOAT
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| width="90%" style="border-top: 2px solid #000;" | ''Return''
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|}
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==Property reference==
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{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
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|-
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| width="10%" align="center" style="background-color:#D8C9D8;" | [[File:Fc9-prop-icon.png]]
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| width="90%" style="background-color:#D8C9D8; color:#4B008D;" | '''Properties'''
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|-
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|-
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| width="10%" align="center" | [[File:Fc9-type-5-icon.png]]
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| width="90%" | Data Pin
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|-
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| colspan="2" | Microcontroller I/O Pin connected to the DHT11 sensor data pin. 
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|-
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| width="10%" align="center" | [[File:Fc9-type-7-icon.png]]
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| width="90%" | Use Checksum
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|-
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| colspan="2" | 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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|-
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| width="10%" align="center" style="background-color:#EAE1EA;" | [[File:Fc9-conn-icon.png]]
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| width="90%" style="background-color:#EAE1EA; color:#4B008D;" | Advanced Settings
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|-
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|-
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| width="10%" align="center" | [[File:Fc9-type-16-icon.png]]
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| width="90%" | Clock Adjustment
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|-
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| colspan="2" | 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. 
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|}==Macro reference==
  
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"
 
{| class="wikitable" style="width:60%; background-color:#FFFFFF;"

Revision as of 15:20, 20 January 2023

Author Matrix TSL
Version 1.1
Category Environmental


Temp / Humidity (DHT11) component

The DHT11 temperature and humidity sensor is a popular sensor allowing the ambient temperature and relative humidity to be monitored digitally. Humidity Range = 20% - 90% +/- 5% Temperature Range = 0 - 50 Degrees C +/- 2 Degrees C

Component Source Code

Please click here to download the component source project: FC_Comp_Source_DHT11.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_DHT11.fcfx

Detailed description

No detailed description exists yet for this component

Examples

Example Program showing how to sample the DHT11 sensor and show the temperature and humidity on an LCD. FC6 Icon.png DHT11 Example

Macro reference

Fc9-comp-macro.png 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. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png GetHumidityFloat
Gets the humidity returned by calling SampleSensor as a floating point number.  
Fc9-f32-icon.png - FLOAT Return


Fc9-comp-macro.png GetTempString
Gets the temperature returned by calling SampleSensor as a string.  
Fc9-string-icon.png - STRING Return


Fc9-comp-macro.png GetHumidityString
Gets the humidity returned by calling SampleSensor as a string.  
Fc9-string-icon.png - STRING Return


Fc9-comp-macro.png GetHumidityWhole
Gets the whole number portion of the humidity returned by calling SampleSensor. If humidity is 15.8 % then this function would return 15. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png 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. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png GetHumidityReal
Gets the real number portion of the humidity returned by calling SampleSensor. If humidity is 15.8 % then this function would return 8. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png 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. 
Fc9-u8-icon.png - BYTE Return


Fc9-comp-macro.png GetTempFloat
Gets the temperature returned by calling SampleSensor as a floating point number.  
Fc9-f32-icon.png - FLOAT Return



Property reference

Fc9-prop-icon.png Properties
Fc9-type-5-icon.png Data Pin
Microcontroller I/O Pin connected to the DHT11 sensor data pin. 
Fc9-type-7-icon.png 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 
Fc9-conn-icon.png Advanced Settings
Fc9-type-16-icon.png 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. 

==Macro reference==

Fc9-comp-macro.png 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. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png GetHumidityFloat
Gets the humidity returned by calling SampleSensor as a floating point number.  
Fc9-f32-icon.png - FLOAT Return


Fc9-comp-macro.png GetTempString
Gets the temperature returned by calling SampleSensor as a string.  
Fc9-string-icon.png - STRING Return


Fc9-comp-macro.png GetHumidityString
Gets the humidity returned by calling SampleSensor as a string.  
Fc9-string-icon.png - STRING Return


Fc9-comp-macro.png GetHumidityWhole
Gets the whole number portion of the humidity returned by calling SampleSensor. If humidity is 15.8 % then this function would return 15. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png 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. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png GetHumidityReal
Gets the real number portion of the humidity returned by calling SampleSensor. If humidity is 15.8 % then this function would return 8. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png 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. 
Fc9-u8-icon.png - BYTE Return


Fc9-comp-macro.png GetTempFloat
Gets the temperature returned by calling SampleSensor as a floating point number.  
Fc9-f32-icon.png - FLOAT Return



Property reference

Fc9-prop-icon.png Properties
Fc9-type-5-icon.png Data Pin
Microcontroller I/O Pin connected to the DHT11 sensor data pin. 
Fc9-type-7-icon.png 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 
Fc9-conn-icon.png Advanced Settings
Fc9-type-16-icon.png 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. 

==Macro reference==

Fc9-comp-macro.png 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. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png GetHumidityFloat
Gets the humidity returned by calling SampleSensor as a floating point number.  
Fc9-f32-icon.png - FLOAT Return


Fc9-comp-macro.png GetTempString
Gets the temperature returned by calling SampleSensor as a string.  
Fc9-string-icon.png - STRING Return


Fc9-comp-macro.png GetHumidityString
Gets the humidity returned by calling SampleSensor as a string.  
Fc9-string-icon.png - STRING Return


Fc9-comp-macro.png GetHumidityWhole
Gets the whole number portion of the humidity returned by calling SampleSensor. If humidity is 15.8 % then this function would return 15. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png 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. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png GetHumidityReal
Gets the real number portion of the humidity returned by calling SampleSensor. If humidity is 15.8 % then this function would return 8. 
Fc9-s16-icon.png - INT Return


Fc9-comp-macro.png 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. 
Fc9-u8-icon.png - BYTE Return


Fc9-comp-macro.png GetTempFloat
Gets the temperature returned by calling SampleSensor as a floating point number.  
Fc9-f32-icon.png - FLOAT Return



Property reference

Fc9-prop-icon.png Properties
Fc9-type-5-icon.png Data Pin
Microcontroller I/O Pin connected to the DHT11 sensor data pin. 
Fc9-type-7-icon.png 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 
Fc9-conn-icon.png Advanced Settings
Fc9-type-16-icon.png 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. 
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