int om_gsm_power_swap(int value)
{
const char* power_path = om_gsm_power_path();
if (power_path == NULL) return -1;
const char* val = om_sysfs_readfile(power_path);
if (val == NULL) return -1;
int old_val = atoi(val);
// If we are setting it to what it already is, don't bother
if (value == old_val) return old_val;
if (value)
{
// Note: the logic here is Enrico cargo-culting Lindi
// Turn on
const char* reset_path = om_gsm_reset_path();
if (reset_path == NULL) return -1;
if (om_sysfs_writefile(power_path, "0\n") < 0) return -1;
if (om_sysfs_writefile(power_path, "1\n") < 0) return -1;
if (om_sysfs_writefile(reset_path, "1\n") < 0) return -1;
} else {
// Turn off
if (om_sysfs_writefile(power_path, "0\n") < 0) return -1;
}
return old_val;
}
int om_gsm_power_get()
{
const char* path = om_gsm_power_path();
if (path == NULL) return -1;
const char* val = om_sysfs_readfile(path);
if (val == NULL) return -1;
return atoi(val);
}
const char* om_sysfs_swap(const char* name, const char* val)
{
const char* path = om_sysfs_path(name);
const char* res = NULL;
if (path == NULL) return NULL;
res = om_sysfs_readfile(path);
if (om_sysfs_writefile(path, val) != 0) return NULL;
return res;
}
const char* om_sysfs_get(const char* name)
{
const char* path = om_sysfs_path(name);
if (path == NULL) return NULL;
return om_sysfs_readfile(path);
}
