/* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved. * * The information contained herein is property of Nordic Semiconductor ASA. * Terms and conditions of usage are described in detail in NORDIC * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT. * * Licensees are granted free, non-transferable use of the information. NO * WARRANTY of ANY KIND is provided. This heading must NOT be removed from * the file. * */ #include #include #include "nordic_common.h" #include "nrf.h" #include "nrf_log.h" #include "ble.h" #include "ble_hci.h" #include "ble_srv_common.h" #include "ble_advdata.h" #include "ble_advertising.h" #include "ble_conn_params.h" #include "softdevice_handler.h" #include "app_error.h" #include "app_timer.h" #include "EPD_ble.h" #define IS_SRVC_CHANGED_CHARACT_PRESENT 1 /**< Include or not the service_changed characteristic. if not enabled, the server's database cannot be changed for the lifetime of the device*/ #define DEVICE_NAME "NRF_EPD" /**< Name of device. Will be included in the advertising data. */ #define APP_ADV_INTERVAL 300 /**< The advertising interval (in units of 0.625 ms. This value corresponds to 40 ms). */ #define APP_ADV_TIMEOUT_IN_SECONDS 180 /**< The advertising timeout (in units of seconds). */ #define APP_TIMER_PRESCALER 0 /**< Value of the RTC1 PRESCALER register. */ #define APP_TIMER_OP_QUEUE_SIZE 4 /**< Size of timer operation queues. */ #define MIN_CONN_INTERVAL MSEC_TO_UNITS(7.5, UNIT_1_25_MS) /**< Minimum connection interval (7.5 ms) */ #define MAX_CONN_INTERVAL MSEC_TO_UNITS(30, UNIT_1_25_MS) /**< Maximum connection interval (30 ms). */ #define SLAVE_LATENCY 6 /**< Slave latency. */ #define CONN_SUP_TIMEOUT MSEC_TO_UNITS(430, UNIT_10_MS) /**< Connection supervisory timeout (430 ms). */ #define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000, APP_TIMER_PRESCALER) /**< Time from initiating event (connect or start of notification) to first time sd_ble_gap_conn_param_update is called (5 seconds). */ #define NEXT_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(30000, APP_TIMER_PRESCALER) /**< Time between each call to sd_ble_gap_conn_param_update after the first call (30 seconds). */ #define MAX_CONN_PARAMS_UPDATE_COUNT 3 /**< Number of attempts before giving up the connection parameter negotiation. */ #define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */ static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */ static ble_epd_t m_epd; /**< Structure to identify the EPD Service. */ /**@brief Callback function for asserts in the SoftDevice. * * @details This function will be called in case of an assert in the SoftDevice. * * @warning This handler is an example only and does not fit a final product. You need to analyze * how your product is supposed to react in case of Assert. * @warning On assert from the SoftDevice, the system can only recover on reset. * * @param[in] line_num Line number of the failing ASSERT call. * @param[in] file_name File name of the failing ASSERT call. */ void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name) { app_error_handler(DEAD_BEEF, line_num, p_file_name); } /**@brief Function for the Timer initialization. * * @details Initializes the timer module. This creates and starts application timers. */ static void timers_init(void) { // Initialize timer module. APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, false); } /**@brief Function for initializing services that will be used by the application. */ static void services_init(void) { uint32_t err_code; memset(&m_epd, 0, sizeof(ble_epd_t)); err_code = ble_epd_init(&m_epd); APP_ERROR_CHECK(err_code); } /**@brief Function for the GAP initialization. * * @details This function sets up all the necessary GAP (Generic Access Profile) parameters of the * device including the device name, appearance, and the preferred connection parameters. */ static void gap_params_init(void) { uint32_t err_code; char device_name[20]; ble_gap_addr_t addr; ble_gap_conn_params_t gap_conn_params; ble_gap_conn_sec_mode_t sec_mode; BLE_GAP_CONN_SEC_MODE_SET_OPEN(&sec_mode); err_code = sd_ble_gap_address_get(&addr); APP_ERROR_CHECK(err_code); NRF_LOG_PRINTF("Bluetooth MAC Address: %02X:%02X:%02X:%02X:%02X:%02X\n", addr.addr[5], addr.addr[4], addr.addr[3], addr.addr[2], addr.addr[1], addr.addr[0]); snprintf(device_name, 20, "%s_%02X%02X", DEVICE_NAME, addr.addr[1],addr.addr[0]); err_code = sd_ble_gap_device_name_set(&sec_mode, (const uint8_t *)device_name, strlen(device_name)); APP_ERROR_CHECK(err_code); memset(&gap_conn_params, 0, sizeof(gap_conn_params)); gap_conn_params.min_conn_interval = MIN_CONN_INTERVAL; gap_conn_params.max_conn_interval = MAX_CONN_INTERVAL; gap_conn_params.slave_latency = SLAVE_LATENCY; gap_conn_params.conn_sup_timeout = CONN_SUP_TIMEOUT; err_code = sd_ble_gap_ppcp_set(&gap_conn_params); APP_ERROR_CHECK(err_code); } /**@brief Function for handling the Connection Parameters Module. * * @details This function will be called for all events in the Connection Parameters Module which * are passed to the application. * @note All this function does is to disconnect. This could have been done by simply * setting the disconnect_on_fail config parameter, but instead we use the event * handler mechanism to demonstrate its use. * * @param[in] p_evt Event received from the Connection Parameters Module. */ static void on_conn_params_evt(ble_conn_params_evt_t * p_evt) { uint32_t err_code; if (p_evt->evt_type == BLE_CONN_PARAMS_EVT_FAILED) { err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_CONN_INTERVAL_UNACCEPTABLE); APP_ERROR_CHECK(err_code); } } /**@brief Function for handling a Connection Parameters error. * * @param[in] nrf_error Error code containing information about what went wrong. */ static void conn_params_error_handler(uint32_t nrf_error) { APP_ERROR_HANDLER(nrf_error); } /**@brief Function for initializing the Connection Parameters module. */ static void conn_params_init(void) { uint32_t err_code; ble_conn_params_init_t cp_init; memset(&cp_init, 0, sizeof(cp_init)); cp_init.p_conn_params = NULL; cp_init.first_conn_params_update_delay = FIRST_CONN_PARAMS_UPDATE_DELAY; cp_init.next_conn_params_update_delay = NEXT_CONN_PARAMS_UPDATE_DELAY; cp_init.max_conn_params_update_count = MAX_CONN_PARAMS_UPDATE_COUNT; cp_init.start_on_notify_cccd_handle = BLE_GATT_HANDLE_INVALID; cp_init.disconnect_on_fail = false; cp_init.evt_handler = on_conn_params_evt; cp_init.error_handler = conn_params_error_handler; err_code = ble_conn_params_init(&cp_init); APP_ERROR_CHECK(err_code); } /**@brief Function for putting the chip into sleep mode. * * @note This function will not return. */ static void sleep_mode_enter(void) { // Go to system-off mode (this function will not return; wakeup will cause a reset). uint32_t err_code = sd_power_system_off(); APP_ERROR_CHECK(err_code); } /**@brief Function for handling advertising events. * * @details This function will be called for advertising events which are passed to the application. * * @param[in] ble_adv_evt Advertising event. */ static void on_adv_evt(ble_adv_evt_t ble_adv_evt) { switch (ble_adv_evt) { case BLE_ADV_EVT_FAST: break; case BLE_ADV_EVT_IDLE: sleep_mode_enter(); break; default: break; } } /**@brief Function for handling the Application's BLE Stack events. * * @param[in] p_ble_evt Bluetooth stack event. */ static void on_ble_evt(ble_evt_t * p_ble_evt) { uint32_t err_code; switch (p_ble_evt->header.evt_id) { case BLE_GAP_EVT_CONNECTED: m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle; break; case BLE_GAP_EVT_DISCONNECTED: m_conn_handle = BLE_CONN_HANDLE_INVALID; err_code = ble_advertising_start(BLE_ADV_MODE_FAST); APP_ERROR_CHECK(err_code); break; case BLE_GAP_EVT_SEC_PARAMS_REQUEST: // Pairing not supported err_code = sd_ble_gap_sec_params_reply(m_conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL); APP_ERROR_CHECK(err_code); break; case BLE_GATTS_EVT_SYS_ATTR_MISSING: // No system attributes have been stored. err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0); APP_ERROR_CHECK(err_code); break; case BLE_GATTC_EVT_TIMEOUT: case BLE_GATTS_EVT_TIMEOUT: // Disconnect on GATT Server and Client timeout events. err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION); APP_ERROR_CHECK(err_code); break; case BLE_EVT_USER_MEM_REQUEST: err_code = sd_ble_user_mem_reply(m_conn_handle, NULL); APP_ERROR_CHECK(err_code); break; default: // No implementation needed. break; } } /**@brief Function for dispatching a BLE stack event to all modules with a BLE stack event handler. * * @details This function is called from the BLE Stack event interrupt handler after a BLE stack * event has been received. * * @param[in] p_ble_evt Bluetooth stack event. */ static void ble_evt_dispatch(ble_evt_t * p_ble_evt) { ble_conn_params_on_ble_evt(p_ble_evt); ble_epd_on_ble_evt(&m_epd, p_ble_evt); on_ble_evt(p_ble_evt); ble_advertising_on_ble_evt(p_ble_evt); } /**@brief Function for dispatching a system event to interested modules. * * @details This function is called from the System event interrupt handler after a system * event has been received. * * @param[in] sys_evt System stack event. */ static void sys_evt_dispatch(uint32_t sys_evt) { ble_advertising_on_sys_evt(sys_evt); } /**@brief Function for initializing the BLE stack. * * @details Initializes the SoftDevice and the BLE event interrupt. */ static void ble_stack_init(void) { uint32_t err_code; // Initialize the SoftDevice handler module. SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_SYNTH_250_PPM, NULL); // Enable BLE stack. ble_enable_params_t ble_enable_params; memset(&ble_enable_params, 0, sizeof(ble_enable_params)); err_code = sd_ble_enable(&ble_enable_params); APP_ERROR_CHECK(err_code); // Register with the SoftDevice handler module for BLE events. err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch); APP_ERROR_CHECK(err_code); // Register with the SoftDevice handler module for BLE events. err_code = softdevice_sys_evt_handler_set(sys_evt_dispatch); APP_ERROR_CHECK(err_code); } /**@brief Function for initializing the Advertising functionality. */ static void advertising_init(void) { uint32_t err_code; ble_advdata_t advdata; // Build advertising data struct to pass into @ref ble_advertising_init. memset(&advdata, 0, sizeof(advdata)); advdata.name_type = BLE_ADVDATA_FULL_NAME; advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE; ble_adv_modes_config_t options = {0}; options.ble_adv_fast_enabled = BLE_ADV_FAST_ENABLED; options.ble_adv_fast_interval = APP_ADV_INTERVAL; options.ble_adv_fast_timeout = APP_ADV_TIMEOUT_IN_SECONDS; err_code = ble_advertising_init(&advdata, NULL, &options, on_adv_evt, NULL); APP_ERROR_CHECK(err_code); } /**@brief Function for the Power manager. */ static void power_manage(void) { uint32_t err_code = sd_app_evt_wait(); APP_ERROR_CHECK(err_code); } /**@brief Function for application main entry. */ int main(void) { uint32_t err_code; err_code = NRF_LOG_INIT(); APP_ERROR_CHECK(err_code); NRF_LOG_PRINTF("start..\n"); timers_init(); ble_stack_init(); gap_params_init(); services_init(); advertising_init(); conn_params_init(); err_code = ble_advertising_start(BLE_ADV_MODE_FAST); APP_ERROR_CHECK(err_code); NRF_LOG_PRINTF("done.\n"); for (;;) { power_manage(); } }