gptimer_get_pm_lock() function
Get GPTimer power management lock
Arguments
timer
Timer handle created by `gptimer_new_timer()`
ret_pm_lock
Timer's internal power management lock
Return value
- ESP_OK: Get GPTimer power management lock successfully - ESP_ERR_INVALID_ARG: Get GPTimer power management lock failed because of invalid argument - ESP_FAIL: Get GPTimer power management lock failed because of other error