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Slightly adjusted battery voltage measurement after calibration against B&K Precision lab supply with beefy wiring. Needs more cross-validation.

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Lorenz Meier
2013-02-16 18:16:29 +01:00
parent 63d95f672e
commit 598622a00f
1 changed files with 1 additions and 1 deletions
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apps/px4io/registers.c
+1 -1
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@@ -457,7 +457,7 @@ registers_get(uint8_t page, uint8_t offset, uint16_t **values, unsigned *num_val
* Intercept corrected for best results @ 12V. * Intercept corrected for best results @ 12V.
*/ */
unsigned counts = adc_measure(ADC_VBATT); unsigned counts = adc_measure(ADC_VBATT);
unsigned mV = (4150 + (counts * 46)) / 10; unsigned mV = (4150 + (counts * 46)) / 10 - 200;
unsigned corrected = (mV * r_page_setup[PX4IO_P_SETUP_VBATT_SCALE]) / 10000; unsigned corrected = (mV * r_page_setup[PX4IO_P_SETUP_VBATT_SCALE]) / 10000;
r_page_status[PX4IO_P_STATUS_VBATT] = corrected; r_page_status[PX4IO_P_STATUS_VBATT] = corrected;