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  • Case ID: 126820
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Using app_timer_start() with app_scheduler

Sorrow91

Hey guys,

First of all, I'm using the SDK 14.1 with my nRF52832-DK. I'm trying to get the function app_timer_start() work with the app_scheduler. But the app_timer_start() function will not be executed right.

In my sdk_config.h the #define APP_TIMER_CONFIG_USE_SCHEDULER 1 is defined. But everytime I call the app_timer_start() function, with activating the notification on the bas, to read my batterylevel, the device lost the connection.

I will give you some of my code snippets:

timers_init:

static void timers_init(void)
{
    ret_code_t err_code;
	
    err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);

    // Create security request timer.
    err_code = app_timer_create(&m_sec_req_timer_id,
                                APP_TIMER_MODE_SINGLE_SHOT,
                                sec_req_timeout_handler);
    APP_ERROR_CHECK(err_code);
	
		// Create battery timer.
    err_code = app_timer_create(&m_battery_timer_id,
                                APP_TIMER_MODE_REPEATED,
                                battery_level_meas_timeout_handler);
		read_error(err_code);
    APP_ERROR_CHECK(err_code);
}

bas_init:

static void bas_init(void)
{
    ret_code_t     err_code;
    ble_bas_init_t bas_init_obj;

    memset(&bas_init_obj, 0, sizeof(bas_init_obj));

    bas_init_obj.evt_handler          = on_bas_evt;
    bas_init_obj.support_notification = true;
    bas_init_obj.p_report_ref         = NULL;
    bas_init_obj.initial_batt_level   = 100;
	
		BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&bas_init_obj.battery_level_char_attr_md.cccd_write_perm);
    BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&bas_init_obj.battery_level_char_attr_md.read_perm);
    BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&bas_init_obj.battery_level_char_attr_md.write_perm);

    BLE_GAP_CONN_SEC_MODE_SET_ENC_NO_MITM(&bas_init_obj.battery_level_report_read_perm);

    err_code = ble_bas_init(&m_bas, &bas_init_obj);
    APP_ERROR_CHECK(err_code);
}

on_bas_evt:

static void on_bas_evt(ble_bas_t * p_bas, ble_bas_evt_t * p_evt)
{
    ret_code_t err_code;

    switch (p_evt->evt_type)
    {
        case BLE_BAS_EVT_NOTIFICATION_ENABLED:
            // Start battery timer
            err_code = app_timer_start(m_battery_timer_id, BATTERY_LEVEL_MEAS_INTERVAL, NULL);
						APP_ERROR_CHECK(err_code);
            break; // BLE_BAS_EVT_NOTIFICATION_ENABLED

        case BLE_BAS_EVT_NOTIFICATION_DISABLED:
            err_code = app_timer_stop(m_battery_timer_id);
            APP_ERROR_CHECK(err_code);
            break; // BLE_BAS_EVT_NOTIFICATION_DISABLED

        default:
            // No implementation needed.
            break;
    }
}

main:

int main(void)
{
    bool erase_bonds;

    // Initialize
    log_init();
    timers_init();
    buttons_leds_init(&erase_bonds);
		ble_stack_init();
    scheduler_init();
    gap_params_init();
    gatt_init();
    db_discovery_init();
    peer_manager_init();
		advertising_init();
    services_init();
    conn_params_init();
		saadc_init();
    	
    advertising_start(erase_bonds);

    // Enter main loop
    for (;;)
    {
        app_sched_execute();
        if (NRF_LOG_PROCESS() == false)
        {
            power_manage();
        }
    }
}

I can't see what I do wrong here.

Here is the full code: github

Hopefully someone can help me out of it.

Thanks in advance

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