Sleep current in hibernate

Hi point85,

In general, in order to put the system into hibernation mode you should make sure that :

1. All the tasks are in IDLE state
2. No intensive write flash operations
3. Timers are in IDLE state
4. No interrupt activity (for example put the sensors in sleep / power down mode )
5. The debugger should not be attached

Any of the above statements will prevent the system to hibernate and as a result a cold boot will take place. You can do the following modifications in ble_peripheral_task.c of ble_peripheral example.

1.建立一个OS_TIMER()以阻止dvertising after 15 seconds:

PRIVILEGED_DATA static OS_TIMER hiberbation_timer; static void hiberbation_timer_cb(OS_TIMER timer) { ble_gap_adv_stop(); }

2. Start the timer in ble_peripheral_task:

/* create timer for going into hibernation after 15sec*/ hiberbation_timer = OS_TIMER_CREATE("hibernate", OS_MS_2_TICKS(15000), OS_TIMER_FAIL, (void *) OS_GET_CURRENT_TASK(), hiberbation_timer_cb); OS_ASSERT(hiberbation_timer); OS_TIMER_START(hiberbation_timer, OS_TIMER_FOREVER);

3. Upon the timer expiration, the advertising will stop, so the handle_evt_gap_adv_completed() will be triggered and the system will go into hibernation.

static void handle_evt_gap_adv_completed(ble_evt_gap_adv_completed_t *evt) { ble_reset(); hw_cpm_trigger_sw_cursor(); pm_set_sleep_mode(pm_mode_hibernation); }

Thanks, PM_Dialog