[蓝牙] 2、蓝牙BLE协议及架构浅析&&基于广播超时待机说广播事件

 1 /*****************************************************************************
 2 * Static Event Handling Functions
 3 *****************************************************************************/
 4 
 5 /**@brief Function for handling the Application‘s BLE Stack events.
 6  *
 7  * @param[in]   p_ble_evt   Bluetooth stack event.
 8  */
 9 static void on_ble_evt(ble_evt_t *p_ble_evt)
10 {
11     uint32_t        err_code;
12     static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID;
13 
14     switch (p_ble_evt->header.evt_id)
15     {
16     case BLE_GAP_EVT_CONNECTED:
17         led_stop();
18 
19         m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
20 
21         // Initialize the current heart rate to the average of max and min values. So that
22         // everytime a new connection is made, the heart rate starts from the same value.
23         // m_cur_heart_rate = 0;//(MAX_HEART_RATE + MIN_HEART_RATE) / 2;
24         // Start timers used to generate battery and HR measurements.
25         application_timers_start();
26 
27         // Start handling button presses
28         err_code = app_button_enable();
29         APP_ERROR_CHECK(err_code);
30         break;
31 
32     case BLE_GAP_EVT_DISCONNECTED:
33         // Since we are not in a connection and have not started advertising, store bonds
34         err_code = ble_bondmngr_bonded_centrals_store();
35         APP_ERROR_CHECK(err_code);
36 
37         // @note Flash access may not be complete on return of this API. System attributes are now
38         // stored to flash when they are updated to ensure flash access on disconnect does not
39         // result in system powering off before data was successfully written.
40 
41         // Go to system-off mode, should not return from this function, wakeup will trigger
42         // a reset.
43         //system_off_mode_enter();
44         app_button_disable();
45         DispColor(BLACK);
46         //re-enter advertising model if disconnected
47 
48         advertising_init();
49         // Start advertising
50         advertising_start();
51         break;
52 
53     case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
54         err_code = sd_ble_gap_sec_params_reply(m_conn_handle,
55                                                BLE_GAP_SEC_STATUS_SUCCESS,
56                                                &m_sec_params);
57         APP_ERROR_CHECK(err_code);
58         break;
59 
60     case BLE_GAP_EVT_TIMEOUT:
61         if (p_ble_evt->evt.gap_evt.params.timeout.src == BLE_GAP_TIMEOUT_SRC_ADVERTISEMENT)
62         {
63             led_stop();
64 
65             nrf_gpio_cfg_sense_input(SENSOR_BUTTON_PIN_RIGHT,
66                                      BUTTON_PULL,
67                                      NRF_GPIO_PIN_SENSE_LOW);
68 
69             nrf_gpio_cfg_sense_input(SENSOR_BUTTON_PIN_LEFT,
70                                      BUTTON_PULL,
71                                      NRF_GPIO_PIN_SENSE_LOW);
72 #if defined(ENABLE_UP)
73             nrf_gpio_cfg_sense_input(SENSOR_BUTTON_PIN_UP,
74                                      BUTTON_PULL,
75                                      NRF_GPIO_PIN_SENSE_LOW);
76 
77 
78             nrf_gpio_cfg_sense_input(SENSOR_BUTTON_PIN_DOWN,
79                                      BUTTON_PULL,
80                                      NRF_GPIO_PIN_SENSE_LOW);
81 #endif
82 
83             system_off_mode_enter();
84         }
85         break;
86 
87     default:
88         // No implementation needed.
89         break;
90     }
91 }