diff options
Diffstat (limited to 'src/print_battery_info.c')
| -rw-r--r-- | src/print_battery_info.c | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/src/print_battery_info.c b/src/print_battery_info.c index e9077ec..e22ca3e 100644 --- a/src/print_battery_info.c +++ b/src/print_battery_info.c @@ -175,11 +175,19 @@ static bool slurp_battery_info(struct battery_info *batt_info, yajl_gen json_gen * 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 && voltage != -1) { - batt_info->present_rate = (((float)voltage / 1000.0) * ((float)batt_info->present_rate / 1000.0)); - batt_info->remaining = (((float)voltage / 1000.0) * ((float)batt_info->remaining / 1000.0)); - batt_info->full_design = (((float)voltage / 1000.0) * ((float)batt_info->full_design / 1000.0)); - batt_info->full_last = (((float)voltage / 1000.0) * ((float)batt_info->full_last / 1000.0)); + if (!watt_as_unit && voltage >= 0) { + if (batt_info->present_rate > 0) { + batt_info->present_rate = (((float)voltage / 1000.0) * ((float)batt_info->present_rate / 1000.0)); + } + if (batt_info->remaining > 0) { + batt_info->remaining = (((float)voltage / 1000.0) * ((float)batt_info->remaining / 1000.0)); + } + if (batt_info->full_design > 0) { + batt_info->full_design = (((float)voltage / 1000.0) * ((float)batt_info->full_design / 1000.0)); + } + if (batt_info->full_last > 0) { + batt_info->full_last = (((float)voltage / 1000.0) * ((float)batt_info->full_last / 1000.0)); + } } #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) int state; @@ -499,8 +507,19 @@ void print_battery_info(yajl_gen json_gen, char *buffer, int number, const char return; } - int full = (last_full_capacity ? batt_info.full_last : batt_info.full_design); - if (full < 0 && batt_info.percentage_remaining < 0) { + // *Choose* a measure of the 'full' battery. It is whichever is better of + // the battery's (hardware-given) design capacity (batt_info.full_design) + // and the battery's last known good charge (batt_info.full_last). + // We prefer the design capacity, but use the last capacity if we don't have it, + // or if we are asked to (last_full_capacity == true); but similarly we use + // the design capacity if we don't have the last capacity. + // If we don't have either then both full_design and full_last < 0, + // which implies full < 0, which bails out on the following line. + int full = batt_info.full_design; + if (full < 0 || (last_full_capacity && batt_info.full_last >= 0)) { + full = batt_info.full_last; + } + if (full < 0 && batt_info.remaining < 0 && batt_info.percentage_remaining < 0) { /* We have no physical measurements and no estimates. Nothing * much we can report, then. */ OUTPUT_FULL_TEXT(format_down); |