Digi Xtend RSSI PWM Module.

For LPC21xx on the TWOG:

INPUT CAPTURE CAP0.3 on P0.29 (TWOG ADC5, 5V to 3.3V voltage divider)
INPUT CAPTURE CAP0.0 on P0.30 (TWOG ADC4, no voltage divider)

Currently only available on LPC21xx arch. You must also load the module pwm_meas.xml

Example for airframe file

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

 <module name="pwm_meas"/>
 <module name="xtend_rssi">
   <configure name="XTEND_RSSI_PWM_INPUT_CHANNEL" value="input" />
 </module>

Module configuration options

Configure Options

name: XTEND_RSSI_PWM_INPUT_CHANNEL value: input
Description: select on which arch dep input the pwm line is connected

Dependencies

pwm_meas module

Module functions

Periodic Functions

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

xtend_rssi_periodic()
- Frequency in Hz: 0.5
- 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

xtend_rssi.h

Source Files

modules/datalink/xtend_rssi.c

Raw xtend_rssi.xml file:

<!DOCTYPE module SYSTEM "module.dtd">
<module name="xtend_rssi" dir="datalink">
  <doc>
    <description>
      Digi Xtend RSSI PWM Module.
      For LPC21xx on the TWOG:
      - INPUT CAPTURE CAP0.3 on P0.29 (TWOG ADC5, 5V to 3.3V voltage divider)
      - INPUT CAPTURE CAP0.0 on P0.30 (TWOG ADC4, no voltage divider)
      Currently only available on LPC21xx arch.
      You must also load the module pwm_meas.xml
    </description>
    <configure name="XTEND_RSSI_PWM_INPUT_CHANNEL" value="input" description="select on which arch dep input the pwm line is connected"/>
  </doc>
  <depends>pwm_meas</depends>
  <header>
    <file name="xtend_rssi.h"/>
  </header>
  <periodic fun="xtend_rssi_periodic()" freq="0.5"/>
  <makefile target="ap">
    <file name="xtend_rssi.c"/>
    <define name="XTEND_RSSI_PWM_INPUT_CHANNEL" value="$(XTEND_RSSI_PWM_INPUT_CHANNEL)"/> <!-- configure the pwm input to be used in airframe file -->
    <define name="USE_PWM_INPUT$(XTEND_RSSI_PWM_INPUT_CHANNEL)" value="PWM_PULSE_TYPE_ACTIVE_HIGH"/> <!-- rssi signal is active high -->
  </makefile>
</module>