From 598622a00f71fac330c7bc919382466cfa059601 Mon Sep 17 00:00:00 2001 From: Lorenz Meier Date: Sat, 16 Feb 2013 18:16:29 +0100 Subject: Slightly adjusted battery voltage measurement after calibration against B&K Precision lab supply with beefy wiring. Needs more cross-validation. --- apps/px4io/registers.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'apps') diff --git a/apps/px4io/registers.c b/apps/px4io/registers.c index 6229a6cc1..f14cd8309 100644 --- a/apps/px4io/registers.c +++ b/apps/px4io/registers.c @@ -457,7 +457,7 @@ registers_get(uint8_t page, uint8_t offset, uint16_t **values, unsigned *num_val * Intercept corrected for best results @ 12V. */ 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; r_page_status[PX4IO_P_STATUS_VBATT] = corrected; -- cgit v1.2.3