Paparazzi UAS  v5.15_devel-47-g0391b4d
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battery_monitor module

AggieAir Battery and power monitor using a custom breakout board, for both fixedwings and rotocrafts.

Both versions use TMP35 temperature sensor for monitoring board and cell temperatures, AD7998 (12bit) ADC for version 4 and AD7997 (10bit) ADC for version 5, and ACS758 bidirectional current sensor.

There are two versions:

  • Rev 4: ADC VIN7 unused
  • Rev 5: on ADC VIN7 is now ARMED_IN (channel that sensing that the safety plug is plugged in. Define if you are using BATTERY_MONITOR_REV4 in your airfame config file (otherwise rev5 is assumed). Also the versions differ in the gain coefficients.

Example for airframe file

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

1 <module name="battery_monitor">
2  <configure name="BATTERY_MONITOR_I2C_DEV" value="i2c2" />
3  <configure name="BATTERY_MONITOR_BUS_ADC_I2C_ADDR" value="0x42" />
4  <configure name="BATTERY_MONITOR_BALANCE_BAT1_ADC_I2C_ADDR" value="0x40" />
5  <configure name="BATTERY_MONITOR_BALANCE_BAT2_ADC_I2C_ADDR" value="0x44" />
6  <configure name="BATTERY_MONITOR_REV4" value="1" />
7  <configure name="BATTERY_MONITOR_CURRENT_OFFSET" value="-120" />
8  <configure name="BATTERY_MONITOR_CURRENT_SENSITIVITY" value="25.6" />
9  <configure name="BATTERY_MONITOR_TEMP_OFFSET" value="250" />
10  <configure name="BATTERY_MONITOR_TEMP_SENSITIVITY" value="10" />
11 </module>

Module configuration options

Configure Options

  • name: BATTERY_MONITOR_I2C_DEV value: i2c2
    Description: I2C device to use for the monitor
  • name: BATTERY_MONITOR_BUS_ADC_I2C_ADDR value: 0x42
    Description: slave address of bus adc
  • name: BATTERY_MONITOR_BALANCE_BAT1_ADC_I2C_ADDR value: 0x40
    Description: slave address of balance 1 adc
  • name: BATTERY_MONITOR_BALANCE_BAT2_ADC_I2C_ADDR value: 0x44
    Description: slave address of balance 2 adc
  • name: BATTERY_MONITOR_REV4 value: 1
    Description: set to 1 if using Rev.4
  • name: BATTERY_MONITOR_CURRENT_OFFSET value: -120
    Description: offset from the curremt sensor
  • name: BATTERY_MONITOR_CURRENT_SENSITIVITY value: 25.6
  • name: BATTERY_MONITOR_TEMP_OFFSET value: 250
    Description: offset from the temperature sensor
  • name: BATTERY_MONITOR_TEMP_SENSITIVITY value: 10

Module functions

Init Functions

These initialization functions are called once on startup.

Event Functions

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

Periodic Functions

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

Files

Header Files

The following headers are automatically included in modules.h

Source Files

Raw battery_monitor.xml file:

<!DOCTYPE module SYSTEM "module.dtd">
<module name="battery_monitor" dir="adcs">
<doc>
<description>
AggieAir Battery and power monitor using a custom breakout board, for both fixedwings and rotocrafts.
Both versions use TMP35 temperature sensor for monitoring board and cell temperatures, AD7998 (12bit) ADC
for version 4 and AD7997 (10bit) ADC for version 5, and ACS758 bidirectional current sensor.
There are two versions:
- Rev 4: ADC VIN7 unused
- Rev 5: on ADC VIN7 is now ARMED_IN (channel that sensing that the safety plug is plugged in.
Define if you are using BATTERY_MONITOR_REV4 in your airfame config file (otherwise rev5 is assumed).
Also the versions differ in the gain coefficients.
</description>
<configure name="BATTERY_MONITOR_I2C_DEV" value="i2c2" description="I2C device to use for the monitor"/>
<configure name="BATTERY_MONITOR_BUS_ADC_I2C_ADDR" value="0x42" description="slave address of bus adc"/>
<configure name="BATTERY_MONITOR_BALANCE_BAT1_ADC_I2C_ADDR" value="0x40" description="slave address of balance 1 adc"/>
<configure name="BATTERY_MONITOR_BALANCE_BAT2_ADC_I2C_ADDR" value="0x44" description="slave address of balance 2 adc"/>
<configure name="BATTERY_MONITOR_REV4" value="1" description="set to 1 if using Rev.4"/>
<configure name="BATTERY_MONITOR_CURRENT_OFFSET" value="-120" description="offset from the curremt sensor"/>
<configure name="BATTERY_MONITOR_CURRENT_SENSITIVITY" value="25.6"/>
<configure name="BATTERY_MONITOR_TEMP_OFFSET" value="250" description="offset from the temperature sensor"/>
<configure name="BATTERY_MONITOR_TEMP_SENSITIVITY" value="10"/>
</doc>
<settings>
<dl_settings>
<dl_settings NAME="Batery monitor">
<dl_setting MIN="-2000" MAX="2000" STEP="1" VAR="batmon_current_offset" shortname="cur_off" module="modules/adcs/battery_monitor"/>
<dl_setting MIN="0" MAX="50" STEP="0.1" VAR="batmon_current_sensitivity" shortname="cur_sens" module="modules/adcs/battery_monitor"/>
<dl_setting MIN="-2000" MAX="2000" STEP="1" VAR="batmon_temp_offset" shortname="temp_off" module="modules/adcs/battery_monitor"/>
<dl_setting MIN="0" MAX="50" STEP="0.1" VAR="batmon_temp_sensitivity" shortname="temp_sens" module="modules/adcs/battery_monitor"/>
</dl_settings>
</dl_settings>
</settings>
<header>
<file name="battery_monitor.h"/>
</header>
<init fun="battery_monitor_init()"/>
<periodic fun="battery_monitor_read_bus()" freq="10"/>
<periodic fun="battery_monitor_read_balance_ports_1()" freq="10"/>
<periodic fun="battery_monitor_read_balance_ports_2()" freq="10"/>
<event fun="battery_monitor_event()"/>
<makefile target="ap|fbw">
<file name="battery_monitor.c"/>
<define name="USE_I2C2"/>
<define name="USE_BATTERY_MONITOR"/>
<configure name="BATTERY_MONITOR_I2C_DEV" default="i2c2" case="lower|upper"/>
<define name="BATTERY_MONITOR_I2C_DEV" value="$(BATTERY_MONITOR_I2C_DEV_LOWER)"/>
<define name="USE_$(BATTERY_MONITOR_I2C_DEV_UPPER)"/>
<configure name="BATTERY_MONITOR_REV4" default="0"/>
<define name="BATTERY_MONITOR_REV4" value="$(BATTERY_MONITOR_REV4)"/>
<configure name="BATTERY_MONITOR_BUS_ADC_I2C_ADDR" default="0x42"/>
<define name="BATTERY_MONITOR_BUS_ADC_I2C_ADDR" value="$(BATTERY_MONITOR_BUS_ADC_I2C_ADDR)"/>
<configure name="BATTERY_MONITOR_BALANCE_BAT1_ADC_I2C_ADDR" default="0x40"/>
<define name="BATTERY_MONITOR_BALANCE_BAT1_ADC_I2C_ADDR" value="$(BATTERY_MONITOR_BALANCE_BAT1_ADC_I2C_ADDR)"/>
<configure name="BATTERY_MONITOR_BALANCE_BAT2_ADC_I2C_ADDR" default="0x44"/>
<define name="BATTERY_MONITOR_BALANCE_BAT2_ADC_I2C_ADDR" value="$(BATTERY_MONITOR_BALANCE_BAT2_ADC_I2C_ADDR)"/>
</makefile>
</module>