/* cannot be static, is referred to from battery.c */
int battery_read_statefs(void) {
value_t v;
int success = 0;
if (parse_value_file(STATEFS_ROOT "ChargePercentage", &v, DS_TYPE_GAUGE) ==
0) {
battery_submit("charge", v.gauge, NULL);
success++;
} else if (parse_value_file(STATEFS_ROOT "Capacity", &v, DS_TYPE_GAUGE) ==
0) {
// Use capacity as a charge estimate if ChargePercentage is not available
battery_submit("charge", v.gauge, NULL);
success++;
} else {
WARNING("battery plugin: Neither \"" STATEFS_ROOT "ChargePercentage\" "
"nor \"" STATEFS_ROOT "Capacity\" could be read.");
}
struct {
const char *path;
const char *type;
const char *type_instance;
gauge_t factor;
} metrics[] = {
{STATEFS_ROOT "Current", "current", NULL, 1e-6}, // from uA to A
{STATEFS_ROOT "Energy", "energy_wh", NULL, 1e-6}, // from uWh to Wh
{STATEFS_ROOT "Power", "power", NULL, 1e-6}, // from uW to W
{STATEFS_ROOT "Temperature", "temperature", NULL, 0.1}, // from 10xC to C
{STATEFS_ROOT "TimeUntilFull", "duration", "full", 1.0},
{STATEFS_ROOT "TimeUntilLow", "duration", "low", 1.0},
{STATEFS_ROOT "Voltage", "voltage", NULL, 1e-6}, // from uV to V
};
for (size_t i = 0; i < STATIC_ARRAY_SIZE(metrics); i++) {
if (parse_value_file(metrics[i].path, &v, DS_TYPE_GAUGE) != 0) {
WARNING("battery plugin: Reading \"%s\" failed.", metrics[i].path);
continue;
}
battery_submit(metrics[i].type, v.gauge * metrics[i].factor,
metrics[i].type_instance);
success++;
}
if (success == 0) {
ERROR("battery plugin: statefs backend: none of the statistics are "
"available");
return -1;
}
return 0;
}
static int entropy_read(void) {
value_t v;
if (parse_value_file(ENTROPY_FILE, &v, DS_TYPE_GAUGE) != 0) {
ERROR("entropy plugin: Reading \"" ENTROPY_FILE "\" failed.");
return -1;
}
entropy_submit(v);
return 0;
}
