airspeed_amsys module

Airspeed AMSYS (I2C)

Driver for a Amsys Differential Presure Sensor I2C (AMS 5812-0003-D) (AMS 5812-0001-D)

Example for airframe file

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

<module name="airspeed_amsys">
  b'<define name="AIRSPEED_AMSYS_MAXPRESURE" value="2068" />\n    '
  b'<define name="AIRSPEED_AMSYS_SCALE" value="1.0" />\n    '
  b'<define name="AIRSPEED_AMSYS_FILTER" value="0." />\n    '
  b'<define name="AIRSPEED_AMSYS_SYNC_SEND" />\n    '
  b'<define name="USE_AIRSPEED_AMSYS" value="TRUE|FALSE" />\n  '
  b'<configure name="AIRSPEED_AMSYS_I2C_DEV" value="i2c0" />\n    '
</module>

Module configuration options

Configure Options

• name: AIRSPEED_AMSYS_I2C_DEV value: i2c0
  Description: change default i2c peripheral

Define Options

• name: AIRSPEED_AMSYS_MAXPRESURE value: 2068
  Description: max sensor pressure (Pa) (default: 2068 for AMS 5812-0003-D)(for AMS 5812-0001-D use 1034)
• name: AIRSPEED_AMSYS_SCALE value: 1.0
  Description: sensor scale factor (default: 1.0)
• name: AIRSPEED_AMSYS_FILTER value: 0.
  Description: sensor filter (default: 0. max:1)
• name: AIRSPEED_AMSYS_SYNC_SEND value: None
  Description: flag to transmit the data as it is acquired
• name: USE_AIRSPEED_AMSYS value: TRUE|FALSE
  Description: set airspeed in state interface

Module functions

Init Functions

These initialization functions are called once on startup.

• airspeed_amsys_init()

Event Functions

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

• AirspeedAmsysEvent()

Periodic Functions

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

• airspeed_amsys_read_periodic()
  • Frequency in Hz: 60.
  • 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

• airspeed_amsys.h

Source Files

• modules/sensors/airspeed_amsys.c

Raw airspeed_amsys.xml file:

<!DOCTYPE module SYSTEM "module.dtd">
 
<module name="airspeed_amsys" dir="sensors" task="sensors">
  <doc>
    <description>
      Airspeed AMSYS (I2C)
      Driver for a Amsys Differential Presure Sensor I2C
      (AMS 5812-0003-D)
      (AMS 5812-0001-D)
    </description>
    <configure name="AIRSPEED_AMSYS_I2C_DEV" value="i2c0" description="change default i2c peripheral"/>
    <define name="AIRSPEED_AMSYS_MAXPRESURE" value="2068" description="max sensor pressure (Pa) (default: 2068 for AMS 5812-0003-D)(for AMS 5812-0001-D use 1034)"/>
    <define name="AIRSPEED_AMSYS_SCALE" value="1.0" description="sensor scale factor (default: 1.0)"/>
    <define name="AIRSPEED_AMSYS_FILTER" value="0." description="sensor filter (default: 0. max:1)"/>
    <define name="AIRSPEED_AMSYS_SYNC_SEND" description="flag to transmit the data as it is acquired"/>
    <define name="USE_AIRSPEED_AMSYS" value="TRUE|FALSE" description="set airspeed in state interface"/>
  </doc>
  <settings>
    <dl_settings>
      <dl_settings NAME="AMSYS">
        <dl_settings NAME="Airspeed">
          <dl_setting MAX="3" MIN="0" STEP="0.001" VAR="airspeed_scale" shortname="air_scale" module="modules/sensors/airspeed_amsys" param="AIRSPEED_SCALE"/>
          <dl_setting MAX="1" MIN="0" STEP="0.001" VAR="airspeed_filter" shortname="air_filter" module="modules/sensors/airspeed_amsys" param="AIRSPEED_FILTER"/>
        </dl_settings>
      </dl_settings>
    </dl_settings>
  </settings>
  <dep>
    <depends>i2c</depends>
    <provides>airspeed</provides>
  </dep>
 
  <header>
    <file name="airspeed_amsys.h"/>
  </header>
  <init fun="airspeed_amsys_init()"/>
  <periodic fun="airspeed_amsys_read_periodic()" freq="60."/>
  <event fun="AirspeedAmsysEvent()"/>
 
  <makefile>
    <configure name="AIRSPEED_AMSYS_I2C_DEV" default="i2c0" case="upper|lower"/>
    <define name="USE_$(AIRSPEED_AMSYS_I2C_DEV_UPPER)"/>
    <define name="AIRSPEED_AMSYS_I2C_DEV" value="$(AIRSPEED_AMSYS_I2C_DEV_LOWER)"/>
    <file name="airspeed_amsys.c"/>
    <test>
      <define name="USE_I2C0"/>
      <define name="DOWNLINK_TRANSPORT" value="pprz_tp"/>
      <define name="DOWNLINK_DEVICE" value="uart0"/>
      <define name="USE_UART0"/>
    </test>
  </makefile>
 
</module>