diff options
Diffstat (limited to 'src/print_battery_info.c')
| -rw-r--r-- | src/print_battery_info.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/src/print_battery_info.c b/src/print_battery_info.c index b992efb..3e130c7 100644 --- a/src/print_battery_info.c +++ b/src/print_battery_info.c @@ -40,11 +40,11 @@ void print_battery_info(yajl_gen json_gen, char *buffer, int number, const char char consumptionbuf[256]; const char *walk, *last; char *outwalk = buffer; + bool watt_as_unit; int full_design = -1, remaining = -1, present_rate = -1, - voltage = -1, - current = -1; + voltage = -1; charging_status_t status = CS_DISCHARGING; memset(statusbuf, '\0', sizeof(statusbuf)); @@ -72,13 +72,22 @@ void print_battery_info(yajl_gen json_gen, char *buffer, int number, const char if (*walk != '=') continue; - if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW") || - BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW")) + if (BEGINS_WITH(last, "POWER_SUPPLY_ENERGY_NOW")) { + watt_as_unit = true; remaining = atoi(walk+1); + } + else if (BEGINS_WITH(last, "POWER_SUPPLY_CHARGE_NOW")) { + watt_as_unit = false; + remaining = atoi(walk+1); + } else if (BEGINS_WITH(last, "POWER_SUPPLY_CURRENT_NOW")) - current = atoi(walk+1); + present_rate = atoi(walk+1); else if (BEGINS_WITH(last, "POWER_SUPPLY_VOLTAGE_NOW")) voltage = atoi(walk+1); + /* on some systems POWER_SUPPLY_POWER_NOW does not exist, but actually + * it is the same as POWER_SUPPLY_CURRENT_NOW but with μWh as + * unit instead of μAh. We will calculate it as we need it + * later. */ else if (BEGINS_WITH(last, "POWER_SUPPLY_POWER_NOW")) present_rate = atoi(walk+1); else if (BEGINS_WITH(last, "POWER_SUPPLY_STATUS=Charging")) @@ -101,9 +110,15 @@ void print_battery_info(yajl_gen json_gen, char *buffer, int number, const char } } - /* on some systems POWER_SUPPLY_POWER_NOW does not exist, so we have to calculate it */ - if (present_rate == -1) - present_rate = ((float)voltage / 1000.0) * ((float)current / 1000.0); + /* the difference between POWER_SUPPLY_ENERGY_NOW and + * POWER_SUPPLY_CHARGE_NOW is the unit of measurement. The energy is + * given in mWh, the charge in mAh. So calculate every value given in + * ampere to watt */ + if (!watt_as_unit) { + present_rate = (((float)voltage / 1000.0) * ((float)present_rate / 1000.0)); + remaining = (((float)voltage / 1000.0) * ((float)remaining / 1000.0)); + full_design = (((float)voltage / 1000.0) * ((float)full_design / 1000.0)); + } if ((full_design == -1) || (remaining == -1)) { OUTPUT_FULL_TEXT("No battery"); |