Nordic--nrf52832--button、leds Initialization
bool erase_bonds;
buttons_leds_init(&erase_bonds);
/**@brief Function for initializing buttons and leds.
*
* @param[out] p_erase_bonds Will be true if the clear bonding button was pressed to wake the application up.
*/
static void buttons_leds_init(bool * p_erase_bonds)
{
bsp_event_t startup_event;
uint32_t err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, bsp_event_handler);
APP_ERROR_CHECK(err_code);
err_code = bsp_btn_ble_init(NULL, &startup_event);
APP_ERROR_CHECK(err_code);
*p_erase_bonds = (startup_event == BSP_EVENT_CLEAR_BONDING_DATA);
}
uint32_t bsp_init(uint32_t type, bsp_event_callback_t callback)
{
uint32_t err_code = NRF_SUCCESS;
#if LEDS_NUMBER > 0 && !(defined BSP_SIMPLE)
m_indication_type = type;
#endif // LEDS_NUMBER > 0 && !(defined BSP_SIMPLE)
#if (BUTTONS_NUMBER > 0) && !(defined BSP_SIMPLE)
m_registered_callback = callback;
// BSP will support buttons and generate events
if (type & BSP_INIT_BUTTONS)
{
uint32_t num;
for (num = 0; ((num < BUTTONS_NUMBER) && (err_code == NRF_SUCCESS)); num++)
{
err_code = bsp_event_to_button_action_assign(num, BSP_BUTTON_ACTION_PUSH, BSP_EVENT_DEFAULT);
}
if (err_code == NRF_SUCCESS)
{
err_code = app_button_init((app_button_cfg_t *)app_buttons,
BUTTONS_NUMBER,
APP_TIMER_TICKS(50));
}
if (err_code == NRF_SUCCESS)
{
err_code = app_button_enable();
}
if (err_code == NRF_SUCCESS)
{
err_code = app_timer_create(&m_bsp_button_tmr,
APP_TIMER_MODE_SINGLE_SHOT,
button_timer_handler);
}
}
#elif (BUTTONS_NUMBER > 0) && (defined BSP_SIMPLE)
bsp_board_init(type);
#endif // (BUTTONS_NUMBER > 0) && !(defined BSP_SIMPLE)
#if LEDS_NUMBER > 0 && !(defined BSP_SIMPLE)
if (type & BSP_INIT_LEDS)
{
//handle LEDs only. Buttons are already handled.
bsp_board_init(BSP_INIT_LEDS);
// timers module must be already initialized!
if (err_code == NRF_SUCCESS)
{
err_code =
app_timer_create(&m_bsp_leds_tmr, APP_TIMER_MODE_SINGLE_SHOT, leds_timer_handler);
}
if (err_code == NRF_SUCCESS)
{
err_code =
app_timer_create(&m_bsp_alert_tmr, APP_TIMER_MODE_REPEATED, alert_timer_handler);
}
}
#endif // LEDS_NUMBER > 0 && !(defined BSP_SIMPLE)
return err_code;
}
按键事件分配 函数：bsp_event_to_button_action_assign
| 函数原型 | uint32_t bsp_event_to_button_action_assign ( uint32_t button, bsp_button_action_t action, bsp_event_t event) |
|---|---|
| 函数功能 | 为按键分配特定的事件。该函数允许为按键重新分配标准的事件，为了解除按键分配的事件，BSP 事件中专门提供了 BSP_EVENT_NOTHING 事件，将他分配给按键后，按键将不会再产生事件。 |
| 参 数 | [in] button：分配事件的按键 ID。[in] action：指定按键分配事件的动作。[in] event：分配给按键的事件。 |
| 返回值 | NRF_SUCCESS：事件分配成功。NRF_ERROR_INVALID_PARAM：指定的按键 ID 或按键动作是无效的(未定义的)。 |
/**@brief Function for handling events from the BSP module.
*
* @param[in] event Event generated by button press.
*/
void bsp_event_handler(bsp_event_t event)
{
uint32_t err_code;
switch (event)
{
case BSP_EVENT_SLEEP:
sleep_mode_enter();
break;
case BSP_EVENT_DISCONNECT:
err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
break;
case BSP_EVENT_WHITELIST_OFF:
if (m_conn_handle == BLE_CONN_HANDLE_INVALID)
{
err_code = ble_advertising_restart_without_whitelist(&m_advertising);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
}
break;
default:
break;
}
}
/**@brief BSP events.
*
* @note Events from BSP_EVENT_KEY_0 to BSP_EVENT_KEY_LAST are by default assigned to buttons.
*/
typedef enum
{
BSP_EVENT_NOTHING = 0, /**< Assign this event to an action to prevent the action from generating an event (disable the action). */
BSP_EVENT_DEFAULT, /**< Assign this event to an action to assign the default event to the action. */
BSP_EVENT_CLEAR_BONDING_DATA, /**< Persistent bonding data should be erased. */
BSP_EVENT_CLEAR_ALERT, /**< An alert should be cleared. */
BSP_EVENT_DISCONNECT, /**< A link should be disconnected. */
BSP_EVENT_ADVERTISING_START, /**< The device should start advertising. */
BSP_EVENT_ADVERTISING_STOP, /**< The device should stop advertising. */
BSP_EVENT_WHITELIST_OFF, /**< The device should remove its advertising whitelist. */
BSP_EVENT_BOND, /**< The device should bond to the currently connected peer. */
BSP_EVENT_RESET, /**< The device should reset. */
BSP_EVENT_SLEEP, /**< The device should enter sleep mode. */
BSP_EVENT_WAKEUP, /**< The device should wake up from sleep mode. */
BSP_EVENT_SYSOFF, /**< The device should enter system off mode (without wakeup). */
BSP_EVENT_DFU, /**< The device should enter DFU mode. */
BSP_EVENT_KEY_0, /**< Default event of the push action of BSP_BUTTON_0 (only if this button is present). */
BSP_EVENT_KEY_1, /**< Default event of the push action of BSP_BUTTON_1 (only if this button is present). */
BSP_EVENT_KEY_2, /**< Default event of the push action of BSP_BUTTON_2 (only if this button is present). */
BSP_EVENT_KEY_3, /**< Default event of the push action of BSP_BUTTON_3 (only if this button is present). */
BSP_EVENT_KEY_4, /**< Default event of the push action of BSP_BUTTON_4 (only if this button is present). */
BSP_EVENT_KEY_5, /**< Default event of the push action of BSP_BUTTON_5 (only if this button is present). */
BSP_EVENT_KEY_6, /**< Default event of the push action of BSP_BUTTON_6 (only if this button is present). */
BSP_EVENT_KEY_7, /**< Default event of the push action of BSP_BUTTON_7 (only if this button is present). */
BSP_EVENT_KEY_LAST = BSP_EVENT_KEY_7,
} bsp_event_t;