diff options
Diffstat (limited to 'firmware/target/arm/as3525/powermgmt-as3525.c')
| -rw-r--r-- | firmware/target/arm/as3525/powermgmt-as3525.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/firmware/target/arm/as3525/powermgmt-as3525.c b/firmware/target/arm/as3525/powermgmt-as3525.c index ac1ee79f00..47e037684a 100644 --- a/firmware/target/arm/as3525/powermgmt-as3525.c +++ b/firmware/target/arm/as3525/powermgmt-as3525.c @@ -21,36 +21,53 @@ #include "config.h" #include "adc.h" +#include "adc-target.h" #include "powermgmt.h" -/* TODO */ +/* TODO + Each as3525 target should probably define its own battery properties + (dangerous/shutoff battery level, discharge/charge curves) in a file + called powermgmt-<target>.c in its own sub-directory. + + For now, this file provides simple uncalibrated settings to get at least + a basic reading for all as3525 targets with a lithium battery. + */ const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] = { - 0 + /* TODO: this is just an initial guess */ + 3400 }; const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] = { - 0 + /* TODO: this is just an initial guess */ + 3300 }; /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */ const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] = { - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } + /* TODO: simple uncalibrated curve, linear except for first 10% */ + { 3300, 3390, 3480, 3570, 3660, 3750, 3840, 3930, 4020, 4110, 4200 } }; #if CONFIG_CHARGING /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */ const unsigned short percent_to_volt_charge[11] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 + /* TODO: simple uncalibrated curve, linear except for first 10% */ + 3300, 3390, 3480, 3570, 3660, 3750, 3840, 3930, 4020, 4110, 4200 }; #endif /* CONFIG_CHARGING */ +/* ADC should read 0x3ff=5.12V */ +#define BATTERY_SCALE_FACTOR 5125 +/* full-scale ADC readout (2^10) in millivolt */ + /* Returns battery voltage from ADC [millivolts] */ unsigned int battery_adc_voltage(void) { - return 1; + return (adc_read(ADC_RTCSUP) * BATTERY_SCALE_FACTOR) >> 10; } + |