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">
b'<define name="SHT_DAT_GPIO" value="port,pin" />\n '
b'<define name="SHT_SCK_GPIO" value="port,pin" />\n '
b'<define name="SHT_SDLOG" value="TRUE|FALSE" />\n '
</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.
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
Source Files
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>