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| author | Michael Sevakis <jethead71@rockbox.org> | 2008-04-14 06:52:38 +0000 |
|---|---|---|
| committer | Michael Sevakis <jethead71@rockbox.org> | 2008-04-14 06:52:38 +0000 |
| commit | 0257547d58ce05db0331d7b541f07ce020a7649e (patch) | |
| tree | 8de7d722df1d44d380782ea8f24feef23846885a | |
| parent | 25ebc858428b123aa03e816fe15e02991c91c4f6 (diff) | |
| download | rockbox-0257547d58ce05db0331d7b541f07ce020a7649e.zip rockbox-0257547d58ce05db0331d7b541f07ce020a7649e.tar.gz rockbox-0257547d58ce05db0331d7b541f07ce020a7649e.tar.bz2 rockbox-0257547d58ce05db0331d7b541f07ce020a7649e.tar.xz | |
Gigabeat S: Make ADC battery voltage reading correct. Tiny tweak to ADC driver traffic limiting.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17105 a1c6a512-1295-4272-9138-f99709370657
| -rw-r--r-- | firmware/target/arm/imx31/gigabeat-s/adc-imx31.c | 2 | ||||
| -rw-r--r-- | firmware/target/arm/imx31/gigabeat-s/powermgmt-imx31.c | 7 |
2 files changed, 3 insertions, 6 deletions
diff --git a/firmware/target/arm/imx31/gigabeat-s/adc-imx31.c b/firmware/target/arm/imx31/gigabeat-s/adc-imx31.c index dfaaab9..764e2e4 100644 --- a/firmware/target/arm/imx31/gigabeat-s/adc-imx31.c +++ b/firmware/target/arm/imx31/gigabeat-s/adc-imx31.c @@ -50,7 +50,7 @@ unsigned short adc_read(int channel) mutex_lock(&adc_mtx); /* Limit the traffic through here */ - if (TIME_AFTER(current_tick, last_adc_read[input_select])) + if (current_tick != last_adc_read[input_select]) { /* Keep enable, start conversion, increment from channel 0, * increment from channel 4 */ diff --git a/firmware/target/arm/imx31/gigabeat-s/powermgmt-imx31.c b/firmware/target/arm/imx31/gigabeat-s/powermgmt-imx31.c index 7441100..53996f8 100644 --- a/firmware/target/arm/imx31/gigabeat-s/powermgmt-imx31.c +++ b/firmware/target/arm/imx31/gigabeat-s/powermgmt-imx31.c @@ -48,13 +48,10 @@ const unsigned short percent_to_volt_charge[11] = 3480, 3550, 3590, 3610, 3630, 3650, 3700, 3760, 3800, 3910, 3990 }; -/* ADC[0] is (530) at discharge and 625 at full charge */ -#define BATTERY_SCALE_FACTOR 6605 -/* full-scale ADC readout (2^10) in millivolt */ - /* Returns battery voltage from ADC [millivolts] */ unsigned int battery_adc_voltage(void) { - return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10; + /* ADC reading 0-1023 = 2400mV-4700mV */ + return ((adc_read(ADC_BATTERY) * 2303) >> 10) + 2400; } |