PX4 Firmware
PX4 Autopilot Software http://px4.io
sensor_params_battery.c
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33 
34 /**
35  * Battery voltage divider (V divider)
36  *
37  * This is the divider from battery voltage to 3.3V ADC voltage.
38  * If using e.g. Mauch power modules the value from the datasheet
39  * can be applied straight here. A value of -1 means to use
40  * the board default.
41  *
42  * @group Battery Calibration
43  * @decimal 8
44  */
45 PARAM_DEFINE_FLOAT(BAT_V_DIV, -1.0);
46 
47 /**
48  * Battery current per volt (A/V)
49  *
50  * The voltage seen by the 3.3V ADC multiplied by this factor
51  * will determine the battery current. A value of -1 means to use
52  * the board default.
53  *
54  * @group Battery Calibration
55  * @decimal 8
56  */
57 PARAM_DEFINE_FLOAT(BAT_A_PER_V, -1.0);
PARAM_DEFINE_FLOAT(BAT_CNT_V_VOLT, -1.0f)
Scaling from ADC counts to volt on the ADC input (battery voltage)