From 1d901a82fdd0e2620fcdc70f08e414ace24331a2 Mon Sep 17 00:00:00 2001 From: Cástor Muñoz Date: Wed, 9 Jan 2013 21:01:22 +0100 Subject: iPod Classic/6G: fix battery voltage ADC scale Scale battery voltage ADC readings by 1023 instead of 1000, using ADC1 (substractor) instead of ADC0 (multiplicator) to get better resolution. Percent charge/discharge tables are also modified to return a similar value than the old ones. Change-Id: I2951c75faa02f4302599ec24f9156cfd209c36eb --- firmware/target/arm/s5l8702/ipod6g/pmu-ipod6g.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'firmware/target/arm/s5l8702/ipod6g/pmu-ipod6g.c') diff --git a/firmware/target/arm/s5l8702/ipod6g/pmu-ipod6g.c b/firmware/target/arm/s5l8702/ipod6g/pmu-ipod6g.c index c11c0ad416..946beb1519 100644 --- a/firmware/target/arm/s5l8702/ipod6g/pmu-ipod6g.c +++ b/firmware/target/arm/s5l8702/ipod6g/pmu-ipod6g.c @@ -73,7 +73,7 @@ int pmu_read_adc(unsigned int adc) /* millivolts */ int pmu_read_battery_voltage(void) { - return pmu_read_adc(0) * 6; + return (pmu_read_adc(1) * 2000 / 1023) + 2250; } /* milliamps */ -- cgit v1.2.3