52832 MDK Code Analysis LEDs and keys

ON_BLE_EVT--Ble_evt_dispatch---Ble_stack_init

Ble_lbs_on_button_change

static void On_write (ble_lbs_t * p_lbs, ble_evt_t * p_ble_evt)//contains data sent from the phone
{
ble_gatts_evt_write_t * P_evt_write = &p_ble_evt->evt.gatts_evt.params.write;

if ((P_evt_write->handle = = P_lbs->led_char_handles.value_handle) &&
(P_evt_write->len = = 1) &&
(P_lbs->led_write_handler! = NULL))
{
P_lbs->led_write_handler (p_lbs, p_evt_write->data[0]);
}
}

P_evt_write->data[0] There is a private agreement in the bread

Here are the code differences between the two functions:
static void On_write (ble_evt_t * p_ble_evt)
On_write-BLE_CONN_PARAMS_ON_BLE_EVT (ble_evt_t * p_ble_evt)-Ble_evt_dispatch (ble_evt_t * p_ble_evt)- Ble_stack_init--
static void On_write (ble_lbs_t * p_lbs, ble_evt_t * p_ble_evt)
On_write--BLE_LBS_ON_BLE_EVT (ble_lbs_t * p_lbs, ble_evt_t * p_ble_evt)--Ble_evt_dispatch (ble_evt_t * P_ble_ev T)--Ble_stack_init

function Analysis of keys
Analysis of the Button_event_handler function

Button_event_handler-Buttons_init

#define BUTTON_1 13
#define BUTTON_2 14
#define BUTTON_3 15
#define BUTTON_4 16

static void Buttons_init (void)
{
uint32_t Err_code;

   //the array must is static because a pointer to it would be saved in the button handler module.
    static app_button_cfg_t buttons[] =
    {
         {Ledbutton_button_pin, False, Button_pull, Button_event_handler},
         {, False, Button_pull, button_event_handler},//the key value added according to the routine
         {button_pull, False, Button_event_handler},
        {16, False, Button_pull, Button_event_handler}
       
   };

    Err_code = app_button_init (buttons, sizeof (buttons)/sizeof (Buttons[0]),
                                 button_detection_delay);
    App_error_check (Err_code);
}

typedef struct
{
uint8_t Pin_no; /**< Pin to is used as a button. */
uint8_t active_state; /**< App_button_active_high or App_button_active_low. */
nrf_gpio_pin_pull_t pull_cfg; /**< pull-up or-down configuration. */
app_button_handler_t Button_handler; /**< Handler to being called when button is pushed. */
} app_button_cfg_t;

SD_BLE_GATTS_HVX (P_lbs->conn_handle, &params);
--uint32_t Ble_lbs_on_button_change (ble_lbs_t * p_lbs, uint8_t button_state)
--static void Button_event_handler (uint8_t pin_no, uint8_t button_action)

Analysis of LED lights:
static void Led_write_handler (ble_lbs_t * p_lbs, uint8_t led_state)

static void Led_write_handler (ble_lbs_t * p_lbs, uint8_t led_state)
{
if (led_state)
{
LEDS_ON (bsp_led_2_mask);//bsp_led_2_mask Ledbutton_led_pin
LEDS_ON (Bsp_led_3_mask);
Nrf_log_info ("Received LED on!\r\n");
}
Else
{
Leds_off (Bsp_led_2_mask);
Leds_off (Bsp_led_3_mask);
Nrf_log_info ("Received LED off!\r\n");
}
}