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Implement get_battery_power_draw() for FreeBSD.

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I'm using the acpi_battery(4) interface, via sysctl.

It should report battery draw in mW (for milli Watts), so I'm
dividing by 1000 before printing in the buffer.
This commit is contained in:
Guido Falsi 2022-10-13 20:13:28 +02:00 committed by Brenden Matthews
parent 43a10434ae
commit 1f661d2432
1 changed files with 21 additions and 0 deletions
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21
src/freebsd.cc
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@ -460,6 +460,27 @@ int get_battery_perct(const char *) {
return batcapacity;
}
void get_battery_power_draw(char *buffer, unsigned int n, const char *bat) {
int rate = 0;
double ret = 0;
/*
* hw.acpi.battery.rate returns battery discharge rate in mW,
* or -1 (according to docs, but also 0 in practice) when not discharging.
*
* ref. acpi_battery(4)
*/
if (GETSYSCTL("hw.acpi.battery.rate", rate)) {
fprintf(stderr, "Cannot read sysctl \"hw.acpi.battery.rate\"\n");
}
if (rate > 0) {
ret = (double)rate/(double)1000;
}
snprintf(buffer, n, "%.1f", ret);
}
double get_battery_perct_bar(struct text_object *obj) {
int batperct = get_battery_perct(obj->data.s);
return batperct;