Radio control based on PPM input

Some STM32 boards have the option to configure RADIO_CONTROL_PPM_PIN. See the board makefile for configure options of the pins. If they set the PPM_CONFIG makefile variable, add it to the target. The PPM_CONFIG define is then used in the board.h file to set the configuration.

Example for airframe file

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

<module name="radio_control_ppm">
  b'<configure name="PPM_CONFIG" value="num" />\n  '
</module>

Module configuration options

Configure Options

name: PPM_CONFIG value: num
Description: Select PPM config, as some boards can used different mapping for the ppm input pin

Module functions

Init Functions

These initialization functions are called once on startup.

ppm_init()

Event Functions

These event functions are called in each cycle of the module event loop.

ppm_event()

Files

Header Files

The following headers are automatically included in modules.h

ppm.h

Source Files

modules/radio_control/ppm.c
arch dependent: modules/radio_control/ppm_arch.c

Raw radio_control_ppm.xml file:

<!DOCTYPE module SYSTEM "module.dtd">
 
<module name="radio_control_ppm" dir="radio_control" task="radio_control">
  <doc>
    <description>
      Radio control based on PPM input
 
      Some STM32 boards have the option to configure RADIO_CONTROL_PPM_PIN.
      See the board makefile for configure options of the pins.
      If they set the PPM_CONFIG makefile variable, add it to the target.
      The PPM_CONFIG define is then used in the _board_.h file to set the configuration.
    </description>
    <configure name="PPM_CONFIG" value="num" description="Select PPM config, as some boards can used different mapping for the ppm input pin"/>
  </doc>
  <dep>
    <depends>radio_control_common</depends>
    <provides>radio_control</provides>
  </dep>
  <header>
    <file name="ppm.h"/>
  </header>
  <init fun="ppm_init()"/>
  <event fun="ppm_event()"/>
  <makefile target="ap|fbw|sim|nps">
    <define name="USE_PPM" value="TRUE"/>
    <define name="PPM_CONFIG" value="$(PPM_CONFIG)" cond="ifdef PPM_CONFIG"/>
    <define name="RADIO_CONTROL_TYPE_PPM"/>
    <file name="ppm.c"/>
    <file_arch name="ppm_arch.c"/>
    <test>
      <define name="RADIO_CONTROL_TYPE_PPM"/>
    </test>
  </makefile>
</module>
 