SHTxx humidity sensor.

This reads the values for humidity and temperature from the SHTxx sensor through bit banging.

Example for airframe file

Add to your firmware section: This example contains all possible configuration options, not all of them are mandatory!

 <module name="humid_sht">
   <define name="SHT_DAT_GPIO" value="port,pin" />
   <define name="SHT_SCK_GPIO" value="port,pin" />
   <define name="SHT_SDLOG" value="TRUE|FALSE" />
 </module>

Module configuration options

Define Options

name: SHT_DAT_GPIO value: port,pin
Description: data GPIO (e.g.: GPIOA,GPIO8)
name: SHT_SCK_GPIO value: port,pin
Description: clock GPIO (e.g.: GPIOA,GPIO9)
name: SHT_SDLOG value: TRUE|FALSE
Description: start logging to SD card

Module functions

Init Functions

These initialization functions are called once on startup.

humid_sht_init()

Periodic Functions

These functions are called periodically at the specified frequency from the module periodic loop.

humid_sht_periodic()
- Frequency in Hz: 4.
- Autorun: LOCK
  Periodic function automatically starts after init and can't be stopped.

Files

Header Files

The following headers are automatically included in modules.h

humid_sht.h

Source Files

modules/meteo/humid_sht.c

Raw humid_sht.xml file:

<!DOCTYPE module SYSTEM "module.dtd">
<module name="humid_sht" dir="meteo">
  <doc>
    <description>
      SHTxx humidity sensor.
      This reads the values for humidity and temperature from the SHTxx sensor through bit banging.
    </description>
    <define name="SHT_DAT_GPIO" value="port,pin" description="data GPIO (e.g.: GPIOA,GPIO8)"/>
    <define name="SHT_SCK_GPIO" value="port,pin" description="clock GPIO (e.g.: GPIOA,GPIO9)"/>
    <define name="SHT_SDLOG" value="TRUE|FALSE" description="start logging to SD card"/>
  </doc>
  <header>
    <file name="humid_sht.h"/>
  </header>
  <init fun="humid_sht_init()"/>
  <periodic fun="humid_sht_periodic()" freq="4."/>
  <makefile target="ap">
    <file name="humid_sht.c"/>
  </makefile>
</module>