diff options
| -rw-r--r-- | firmware/drivers/adc.h | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/firmware/drivers/adc.h b/firmware/drivers/adc.h index 9785f8f..1ff5118 100644 --- a/firmware/drivers/adc.h +++ b/firmware/drivers/adc.h @@ -21,14 +21,18 @@ #define NUM_ADC_CHANNELS 8 -#define ADC_BATTERY 0 -#define ADC_CHARGE_REGULATOR 1 -#define ADC_USB_POWER 2 +#define ADC_BATTERY 0 /* Battery voltage always reads 0x3FF due to + silly scaling */ +#define ADC_CHARGE_REGULATOR 1 /* Regulator reference voltage, should read + about 0x1c0 when charging, else 0x3FF */ +#define ADC_USB_POWER 2 /* USB, reads 0x3FF when USB is inserted */ -#define ADC_BUTTON_ROW1 4 -#define ADC_BUTTON_ROW2 5 -#define ADC_UNREG_POWER 6 -#define ADC_EXT_POWER 7 +#define ADC_BUTTON_ROW1 4 /* Used for scanning the keys, different + voltages for different keys */ +#define ADC_BUTTON_ROW2 5 /* Used for scanning the keys, different + voltages for different keys */ +#define ADC_UNREG_POWER 6 /* Battery voltage with a better scaling */ +#define ADC_EXT_POWER 7 /* The external power voltage, V=X*0.0148 */ #ifdef ARCHOS_RECORDER #define BATTERY_SCALE_FACTOR 6465 |