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paparazzi/conf/modules/px4flow_i2c.xml
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<!DOCTYPE module SYSTEM "module.dtd">
<module name="px4flow_i2c" dir="optical_flow">
<doc>
<description>PX4FLOW optical flow sensor connected over i2c bus</description>
<configure name="PX4FLOW_I2C_DEV" value="i2c2" description="I2C device to use for px4flow"/>
<configure name="PX4FLOW_I2C_ADDR" value="0x84" description="slave address of px4flow"/>
<configure name="REQUEST_INT_FRAME" value="1" description="request i2c_integral_frame, default TRUE"/>
<configure name="PX4FLOW_NOISE_STDDEV" value="1.0" description="standard deviation of the flow measurement (if known)"/>
<configure name="USE_PX4FLOW_AGL" value="1" description="update AGL measurements from onboard sonar"/>
<configure name="PX4FLOW_COMPENSATE_ROTATION" value="1" description="compensate AGL measurements for body rotation"/>
<configure name="PX4FLOW_MEDIAN_LENGTH" value="7" description="Median filter length for the px4flow measurements"/>
</doc>
<settings>
<dl_settings NAME="optical flow">
<dl_settings NAME="px4flow">
<dl_setting MAX="1" MIN="0" STEP="1" VAR="px4flow.compensate_rotation" shortname="derotate_agl"/>
<dl_setting MAX="1" MIN="0" STEP="1" VAR="px4flow.update_agl" shortname="update_agl"/>
<dl_setting MAX="10" MIN="0" STEP="0.1" VAR="px4flow.stddev" shortname="stddev"/>
</dl_settings>
</dl_settings>
</settings>
<header>
<file name="px4flow_i2c.h"/>
</header>
<init fun="px4flow_i2c_init()"/>
<periodic fun="px4flow_i2c_downlink()" freq="4" autorun="FALSE"/> <!-- for debug -->
<periodic fun="px4flow_i2c_periodic()" freq="50"/> <!-- poll px4flow for data, see https://pixhawk.org/modules/px4flow for details -->
<makefile>
<configure name="PX4FLOW_I2C_DEV" default="i2c1" case="lower|upper"/>
<configure name="PX4FLOW_I2C_ADDR" default="0x84"/> <!-- 0x42 + additional zero at the end to make 8 bit address -->
<configure name="REQUEST_INT_FRAME" default="1"/>
<configure name="PX4FLOW_NOISE_STDDEV" default="1.0"/>
<configure name="USE_PX4FLOW_AGL" default="1"/>
<configure name="PX4FLOW_COMPENSATE_ROTATION" default="1"/>
<configure name="PX4FLOW_MEDIAN_LENGTH" default="7"/>
<define name="PX4FLOW_I2C_DEV" value="$(PX4FLOW_I2C_DEV_LOWER)"/>
<define name="USE_$(PX4FLOW_I2C_DEV_UPPER)"/>
<define name="PX4FLOW_I2C_ADDR" value="$(PX4FLOW_I2C_ADDR)"/>
<define name="REQUEST_INT_FRAME" value="$(REQUEST_INT_FRAME)"/>
<define name="PX4FLOW_NOISE_STDDEV" value="$(PX4FLOW_NOISE_STDDEV)"/>
<define name="USE_PX4FLOW_AGL" value="$(USE_PX4FLOW_AGL)"/>
<define name="PX4FLOW_COMPENSATE_ROTATION" value="$(PX4FLOW_COMPENSATE_ROTATION)"/>
<define name="PX4FLOW_MEDIAN_LENGTH" value="$(PX4FLOW_MEDIAN_LENGTH)"/>
<file name="px4flow_i2c.c"/>
</makefile>
</module>