/** * Copyright (c) 2014 - 2018, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form, except as embedded into a Nordic * Semiconductor ASA integrated circuit in a product or a software update for * such product, must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * * 3. Neither the name of Nordic Semiconductor ASA nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * 4. This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /** @file * * @defgroup ble_sdk_app_pwr_mgmt_main main.c * @{ * @ingroup ble_sdk_app_pwr_mgmt * @brief Power profiling sample application main file. * * This file contains the source code for a sample application to demonstrate/measure the power * consumption by the nRF5 IC while sending notifications for a given duration and while * advertising in non-connectable mode for a given duration. The values of macros that begin * with APP_CFG_ prefix can be changed to alter the power consumption of the application. * * @ref srvlib_conn_params module. */ #include #include #include "nrf.h" #include "nrf_soc.h" #include "ble.h" #include "ble_err.h" #include "ble_hci.h" #include "bsp.h" #include "ble_srv_common.h" #include "ble_advdata.h" #include "nrf_sdh.h" #include "nrf_sdh_ble.h" #include "nrf_ble_gatt.h" #include "nrf_ble_qwr.h" #include "app_timer.h" #include "app_error.h" #include "nordic_common.h" #include "nrf_pwr_mgmt.h" // User-modifiable configuration parameters. // The following values shall be altered when doing power profiling. #define APP_CFG_NON_CONN_ADV_TIMEOUT 30 /**< Time for which the device must be advertising in non-connectable mode (in seconds). */ #define APP_CFG_CHAR_NOTIF_TIMEOUT 5000 /**< Time for which the device must continue to send notifications once connected to central (in milli seconds). */ #define APP_CFG_ADV_DATA_LEN 31 /**< Required length of the complete advertisement packet. This should be atleast 8 in order to accommodate flag field and other mandatory fields and one byte of manufacturer specific data. */ #define APP_CFG_CONNECTION_INTERVAL 20 /**< Connection interval used by the central (in milli seconds). This application will be sending one notification per connection interval. A repeating timer will be started with timeout value equal to this value and one notification will be sent everytime this timer expires. */ #define APP_CFG_CHAR_LEN 20 /**< Size of the characteristic value being notified (in bytes). */ // Fixed configuration parameters: // The following parameters are not meant to be changed while using this application for power // profiling. #define NOTIF_BUTTON_ID 0 /**< Button used for initializing the application in connectable mode. */ #define NON_CONN_ADV_BUTTON_ID 1 /**< Button used for initializing the application in non-connectable mode. */ #define DEVICE_NAME "Nordic_Power_Mgmt" /**< Name of device. Will be included in the advertising data. */ #define COMPANY_IDENTIFIER 0x0059 /**< Company identifier for Nordic Semiconductor ASA as per www.bluetooth.org. */ #define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */ #define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */ #define LOCAL_SERVICE_UUID 0x1523 /**< Proprietary UUID for local service. */ #define LOCAL_CHAR_UUID 0x1524 /**< Proprietary UUID for local characteristic. */ #define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */ #define CHAR_NOTIF_TIMEOUT_IN_TKS APP_TIMER_TICKS(APP_CFG_CHAR_NOTIF_TIMEOUT) /**< Time for which the device must continue to send notifications once connected to central (in ticks). */ #define CONNECTABLE_ADV_INTERVAL MSEC_TO_UNITS(20, UNIT_0_625_MS) /**< The advertising interval for connectable advertisement (20 ms). This value can vary between 20ms to 10.24s. */ #define NON_CONNECTABLE_ADV_INTERVAL MSEC_TO_UNITS(100, UNIT_0_625_MS) /**< The advertising interval for non-connectable advertisement (100 ms). This value can vary between 100ms to 10.24s). */ #define APP_ADV_DURATION 3000 /**< The advertising duration (30 seconds) in units of 10 milliseconds. */ #define SLAVE_LATENCY 0 /**< Slave latency. */ #define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds). */ #define ADV_ENCODED_AD_TYPE_LEN 1 /**< Length of encoded ad type in advertisement data. */ #define ADV_ENCODED_AD_TYPE_LEN_LEN 1 /**< Length of the 'length field' of each ad type in advertisement data. */ #define ADV_FLAGS_LEN 1 /**< Length of flags field that will be placed in advertisement data. */ #define ADV_ENCODED_FLAGS_LEN (ADV_ENCODED_AD_TYPE_LEN + \ ADV_ENCODED_AD_TYPE_LEN_LEN + \ ADV_FLAGS_LEN) /**< Length of flags field in advertisement packet. (1 byte for encoded ad type plus 1 byte for length of flags plus the length of the flags itself). */ #define ADV_ENCODED_COMPANY_ID_LEN 2 /**< Length of the encoded Company Identifier in the Manufacturer Specific Data part of the advertisement data. */ #define ADV_ADDL_MANUF_DATA_LEN (APP_CFG_ADV_DATA_LEN - \ ( \ ADV_ENCODED_FLAGS_LEN + \ ( \ ADV_ENCODED_AD_TYPE_LEN + \ ADV_ENCODED_AD_TYPE_LEN_LEN + \ ADV_ENCODED_COMPANY_ID_LEN \ ) \ ) \ ) /**< Length of Manufacturer Specific Data field that will be placed on the air during advertisement. This is computed based on the value of APP_CFG_ADV_DATA_LEN (required advertisement data length). */ #if APP_CFG_ADV_DATA_LEN > BLE_GAP_ADV_SET_DATA_SIZE_MAX #error "The required advertisement data size (APP_CFG_ADV_DATA_LEN) is greater than the value allowed by stack (BLE_GAP_ADV_MAX_SIZE). Reduce the value of APP_CFG_ADV_DATA_LEN and recompile." #endif // Check whether the maximum characteristic length + opcode length (1) + handle length (2) is not // greater than default MTU size. #if (APP_CFG_CHAR_LEN + 1 + 2) > BLE_GATT_ATT_MTU_DEFAULT #error "The APP_CFG_CHAR_LEN is too large for the maximum MTU size." #endif #if ADV_ADDL_MANUF_DATA_LEN < 1 #error "The required length of additional manufacturer specific data computed based on the user configured values is computed to be less than 1. Consider increasing the value of APP_CFG_ADV_DATA_LEN." #endif NRF_BLE_GATT_DEF(m_gatt); /**< GATT module instance. */ NRF_BLE_QWR_DEF(m_qwr); /**< Context for the Queued Write module.*/ APP_TIMER_DEF(m_conn_int_timer_id); /**< Connection interval timer. */ APP_TIMER_DEF(m_notif_timer_id); /**< Notification timer. */ static ble_gap_adv_params_t m_adv_params; /**< Parameters to be passed to the stack when starting advertising. */ static uint8_t m_char_value[APP_CFG_CHAR_LEN]; /**< Value of the characteristic that will be sent as a notification to the central. */ static uint8_t m_addl_adv_manuf_data[ADV_ADDL_MANUF_DATA_LEN]; /**< Value of the additional manufacturer specific data that will be placed in air (initialized to all zeros). */ static ble_gatts_char_handles_t m_char_handles; /**< Handles of local characteristic (as provided by the BLE stack).*/ static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection (as provided by the BLE stack, is BLE_CONN_HANDLE_INVALID if not in a connection).*/ static uint16_t m_service_handle; /**< Handle of local service (as provided by the BLE stack).*/ static bool m_is_notifying_enabled = false; /**< Variable to indicate whether the notification is enabled by the peer.*/ static bool m_is_notification_mode = false; /**< Flag to keep track of if the application is connectable and will have a service with notifications, or if it will advertise in non-connectable mode. */ static bool m_is_non_connectable_mode = false; /**< Flag to keep track of if the application is connectable and will have a service with notifications, or if it will advertise in non-connectable mode. */ static uint8_t m_adv_handle = BLE_GAP_ADV_SET_HANDLE_NOT_SET; /**< Advertising handle used to identify an advertising set. */ static uint8_t m_enc_advdata[BLE_GAP_ADV_SET_DATA_SIZE_MAX]; /**< Buffer for storing an encoded advertising set. */ /**@brief Struct that contains pointers to the encoded advertising data. */ static ble_gap_adv_data_t m_adv_data = { .adv_data = { .p_data = m_enc_advdata, .len = BLE_GAP_ADV_SET_DATA_SIZE_MAX }, .scan_rsp_data = { .p_data = NULL, .len = 0 } }; /**@brief 128-bit UUID base List. */ static ble_uuid128_t const m_base_uuid128 = { { 0x23, 0xD1, 0xBC, 0xEA, 0x5F, 0x78, 0x23, 0x15, 0xDE, 0xEF, 0x12, 0x12, 0x00, 0x00, 0x00, 0x00 } }; /**@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 Characteristic notification. * * @details Sends one characteristic value notification to peer if connected to it and the * notification is enabled. */ static void char_notify(void) { ret_code_t err_code; uint16_t len = APP_CFG_CHAR_LEN; // Send value if connected and notifying. if ((m_conn_handle != BLE_CONN_HANDLE_INVALID) && m_is_notifying_enabled) { ble_gatts_hvx_params_t hvx_params; memset(&hvx_params, 0, sizeof(hvx_params)); len = sizeof(uint8_t); hvx_params.handle = m_char_handles.value_handle; hvx_params.type = BLE_GATT_HVX_NOTIFICATION; hvx_params.offset = 0; hvx_params.p_len = &len; hvx_params.p_data = m_char_value; err_code = sd_ble_gatts_hvx(m_conn_handle, &hvx_params); if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_RESOURCES) && (err_code != BLE_ERROR_GATTS_SYS_ATTR_MISSING) ) { APP_ERROR_HANDLER(err_code); } } } /**@brief Function for the GAP initialization. * * @details This function shall be used to setup all the necessary GAP (Generic Access Profile) * parameters of the device. It also sets the permissions. * */ static void gap_params_init(void) { ret_code_t err_code; 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_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)); // Set GAP Peripheral Preferred Connection Parameters (converting connection interval from // milliseconds to required unit of 1.25ms). gap_conn_params.min_conn_interval = (4 * APP_CFG_CONNECTION_INTERVAL) / 5; gap_conn_params.max_conn_interval = (4 * APP_CFG_CONNECTION_INTERVAL) / 5; 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 initializing the GATT module. */ static void gatt_init(void) { ret_code_t err_code = nrf_ble_gatt_init(&m_gatt, NULL); APP_ERROR_CHECK(err_code); } /**@brief Function for handling Queued Write Module errors. * * @details A pointer to this function will be passed to each service which may need to inform the * application about an error. * * @param[in] nrf_error Error code containing information about what went wrong. */ static void nrf_qwr_error_handler(uint32_t nrf_error) { APP_ERROR_HANDLER(nrf_error); } /**@brief Function for initializing the Queued Write module. */ static void qwr_init(void) { ret_code_t err_code; nrf_ble_qwr_init_t qwr_init_obj = {0}; // Initialize Queued Write Module. qwr_init_obj.error_handler = nrf_qwr_error_handler; err_code = nrf_ble_qwr_init(&m_qwr, &qwr_init_obj); APP_ERROR_CHECK(err_code); } /**@brief Function for initializing the connectable advertisement parameters. * * @details This function initializes the advertisement parameters to values that will put * the application in connectable mode. * */ static void connectable_adv_init(void) { // Initialize advertising parameters (used when starting advertising). memset(&m_adv_params, 0, sizeof(m_adv_params)); m_adv_params.properties.type = BLE_GAP_ADV_TYPE_CONNECTABLE_SCANNABLE_UNDIRECTED; m_adv_params.duration = APP_ADV_DURATION; m_adv_params.p_peer_addr = NULL; m_adv_params.filter_policy = BLE_GAP_ADV_FP_ANY; m_adv_params.interval = CONNECTABLE_ADV_INTERVAL; m_adv_params.primary_phy = BLE_GAP_PHY_1MBPS; } /**@brief Function for initializing the non-connectable advertisement parameters. * * @details This function initializes the advertisement parameters to values that will put * the application in non-connectable mode. * */ static void non_connectable_adv_init(void) { // Initialize advertising parameters (used when starting advertising). memset(&m_adv_params, 0, sizeof(m_adv_params)); m_adv_params.properties.type = BLE_GAP_ADV_TYPE_NONCONNECTABLE_SCANNABLE_UNDIRECTED; // BLE_GAP_ADV_TYPE_CONNECTABLE_NONSCANNABLE_DIRECTED; // m_adv_params.duration = APP_ADV_DURATION; m_adv_params.p_peer_addr = NULL; m_adv_params.filter_policy = BLE_GAP_ADV_FP_ANY; m_adv_params.interval = NON_CONNECTABLE_ADV_INTERVAL; m_adv_params.primary_phy = BLE_GAP_PHY_1MBPS; } /**@brief Function for initializing the Advertisement packet. * * @details This function initializes the data that is to be placed in an advertisement packet in * both connectable and non-connectable modes. * */ static void advertising_init(void) { ret_code_t err_code; ble_advdata_t advdata; ble_advdata_manuf_data_t manuf_data; uint8_t flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE; APP_ERROR_CHECK_BOOL(sizeof(flags) == ADV_FLAGS_LEN); // Assert that these two values of the same. // Build and set advertising data memset(&advdata, 0, sizeof(advdata)); manuf_data.company_identifier = COMPANY_IDENTIFIER; manuf_data.data.size = ADV_ADDL_MANUF_DATA_LEN; manuf_data.data.p_data = m_addl_adv_manuf_data; advdata.flags = flags; advdata.p_manuf_specific_data = &manuf_data; err_code = ble_advdata_encode(&advdata, m_adv_data.adv_data.p_data, &m_adv_data.adv_data.len); APP_ERROR_CHECK(err_code); if(m_is_non_connectable_mode) { err_code = sd_ble_gap_adv_set_configure(&m_adv_handle, NULL, &m_adv_params); APP_ERROR_CHECK(err_code); } else { err_code = sd_ble_gap_adv_set_configure(&m_adv_handle, &m_adv_data, &m_adv_params); APP_ERROR_CHECK(err_code); } } /**@brief Function for adding the Characteristic. * * @details This function adds the characteristic to the local db. * * @param[in] uuid_type Type of service UUID assigned by the SoftDevice. * */ static void char_add(const uint8_t uuid_type) { ret_code_t err_code; ble_gatts_char_md_t char_md; ble_gatts_attr_md_t cccd_md; ble_gatts_attr_t attr_char_value; ble_uuid_t char_uuid; ble_gatts_attr_md_t attr_md; memset(&cccd_md, 0, sizeof(cccd_md)); cccd_md.vloc = BLE_GATTS_VLOC_STACK; BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm); BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.write_perm); memset(&char_md, 0, sizeof(char_md)); char_md.char_props.read = 1; char_md.char_props.notify = 1; char_md.p_char_user_desc = NULL; char_md.p_char_pf = NULL; char_md.p_user_desc_md = NULL; char_md.p_cccd_md = &cccd_md; char_md.p_sccd_md = NULL; char_uuid.type = uuid_type; char_uuid.uuid = LOCAL_CHAR_UUID; memset(&attr_md, 0, sizeof(attr_md)); BLE_GAP_CONN_SEC_MODE_SET_OPEN(&attr_md.read_perm); BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&attr_md.write_perm); attr_md.vloc = BLE_GATTS_VLOC_STACK; attr_md.rd_auth = 0; attr_md.wr_auth = 0; attr_md.vlen = 0; memset(&attr_char_value, 0, sizeof(attr_char_value)); attr_char_value.p_uuid = &char_uuid; attr_char_value.p_attr_md = &attr_md; attr_char_value.init_len = APP_CFG_CHAR_LEN; attr_char_value.init_offs = 0; attr_char_value.max_len = APP_CFG_CHAR_LEN; attr_char_value.p_value = m_char_value; err_code = sd_ble_gatts_characteristic_add(m_service_handle, &char_md, &attr_char_value, &m_char_handles); APP_ERROR_CHECK(err_code); } /**@brief Function for adding the Service. * * @details This function adds the service and the characteristic within it to the local db. * */ static void service_add(void) { ble_uuid_t service_uuid; ret_code_t err_code; service_uuid.uuid = LOCAL_SERVICE_UUID; err_code = sd_ble_uuid_vs_add(&m_base_uuid128, &service_uuid.type); APP_ERROR_CHECK(err_code); err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &service_uuid, &m_service_handle); APP_ERROR_CHECK(err_code); // Add characteristics char_add(service_uuid.type); } /**@brief Function for handling the Notification timeout. * * @details This function will be called when the notification timer expires. This will stop the * timer for connection interval and disconnect from the peer. * * @param[in] p_context Pointer used for passing some arbitrary information (context) from the * app_start_timer() call to the timeout handler. */ static void notif_timeout_handler(void * p_context) { ret_code_t err_code; UNUSED_PARAMETER(p_context); // Stop all notifications (by stopping the timer for connection interval that triggers // notifications and disconnecting from peer). err_code = app_timer_stop(m_conn_int_timer_id); APP_ERROR_CHECK(err_code); err_code = sd_ble_gap_disconnect(m_conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION); APP_ERROR_CHECK(err_code); } /**@brief Function for handling the Connection interval timeout. * * @details This function will be called when the connection interval timer expires. This will * trigger another characteristic notification to the peer. * * @param[in] p_context Pointer used for passing some arbitrary information (context) from the * app_start_timer() call to the timeout handler. */ static void connection_interval_timeout_handler(void * p_context) { UNUSED_PARAMETER(p_context); // Into next connection interval. Send one notification. char_notify(); } /**@brief Function for starting application timers. * * @details This function will be start two timers - one for the time duration for which * notifications have to be sent to the peer and another for the interval between two * notifications (which is also the connection interval). */ static void application_timers_start(void) { ret_code_t err_code; // Start connection interval timer. err_code = app_timer_start(m_conn_int_timer_id, APP_TIMER_TICKS(APP_CFG_CONNECTION_INTERVAL), NULL); APP_ERROR_CHECK(err_code); // Start characteristic notification timer. err_code = app_timer_start(m_notif_timer_id, CHAR_NOTIF_TIMEOUT_IN_TKS, NULL); APP_ERROR_CHECK(err_code); } /**@brief Function for Stopping application timers. */ static void application_timers_stop(void) { ret_code_t err_code; err_code = app_timer_stop(m_notif_timer_id); APP_ERROR_CHECK(err_code); err_code = app_timer_stop(m_conn_int_timer_id); APP_ERROR_CHECK(err_code); } /**@brief Function for starting advertising. */ static void advertising_start(void) { ret_code_t err_code; err_code = sd_ble_gap_adv_start(m_adv_handle, APP_BLE_CONN_CFG_TAG); APP_ERROR_CHECK(err_code); } /**@brief Function for the Timer initialization. * * @details Initializes the timer module. */ static void timers_init(void) { ret_code_t err_code; // Initialize timer module err_code = app_timer_init(); APP_ERROR_CHECK(err_code); // Create timers err_code = app_timer_create(&m_conn_int_timer_id, APP_TIMER_MODE_REPEATED, connection_interval_timeout_handler); APP_ERROR_CHECK(err_code); err_code = app_timer_create(&m_notif_timer_id, APP_TIMER_MODE_SINGLE_SHOT, notif_timeout_handler); APP_ERROR_CHECK(err_code); } /**@brief Function for initializing buttons. */ static void buttons_init(void) { ret_code_t err_code = bsp_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS, NULL); APP_ERROR_CHECK(err_code); } /**@brief Function for evaluating the value written in CCCD * * @details This shall be called when there is a write event received from the stack. This * function will evaluate whether or not the peer has enabled notifications and * start/stop notifications accordingly. * * @param[in] p_ble_evt Bluetooth stack event. */ static void on_write(ble_evt_t const * p_ble_evt) { ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write; if ((p_evt_write->handle == m_char_handles.cccd_handle) && (p_evt_write->len == 2)) { // CCCD written. Start notifications m_is_notifying_enabled = ble_srv_is_notification_enabled(p_evt_write->data); if (m_is_notifying_enabled) { application_timers_start(); char_notify(); } else { application_timers_stop(); } } } /**@brief Function for handling BLE events. * * @param[in] p_ble_evt Bluetooth stack event. * @param[in] p_context Unused. */ static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context) { ret_code_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; err_code = nrf_ble_qwr_conn_handle_assign(&m_qwr, m_conn_handle); APP_ERROR_CHECK(err_code); break; case BLE_GAP_EVT_DISCONNECTED: m_conn_handle = BLE_CONN_HANDLE_INVALID; application_timers_stop(); // Go to system-off mode err_code = sd_power_system_off(); APP_ERROR_CHECK(err_code); break; case BLE_GAP_EVT_PHY_UPDATE_REQUEST: { ble_gap_phys_t const phys = { .rx_phys = BLE_GAP_PHY_AUTO, .tx_phys = BLE_GAP_PHY_AUTO, }; err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys); APP_ERROR_CHECK(err_code); } break; case BLE_GATTS_EVT_SYS_ATTR_MISSING: err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, BLE_GATTS_SYS_ATTR_FLAG_SYS_SRVCS | BLE_GATTS_SYS_ATTR_FLAG_USR_SRVCS); APP_ERROR_CHECK(err_code); break; case BLE_GAP_EVT_ADV_SET_TERMINATED: if (p_ble_evt->evt.gap_evt.params.adv_set_terminated.reason == BLE_GAP_EVT_ADV_SET_TERMINATED_REASON_TIMEOUT) { // Go to system-off mode (this function will not return; wakeup will cause a reset). err_code = sd_power_system_off(); APP_ERROR_CHECK(err_code); } break; case BLE_GATTC_EVT_TIMEOUT: // Disconnect on GATT Client timeout event. err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION); APP_ERROR_CHECK(err_code); break; case BLE_GATTS_EVT_TIMEOUT: // Disconnect on GATT Server timeout event. err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle, BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION); APP_ERROR_CHECK(err_code); break; case BLE_GATTS_EVT_WRITE: on_write(p_ble_evt); break; default: // No implementation needed. break; } } /**@brief Function for initializing the BLE stack. * * @details Initializes the SoftDevice and the BLE event interrupt. */ static void ble_stack_init(void) { ret_code_t err_code; err_code = nrf_sdh_enable_request(); APP_ERROR_CHECK(err_code); // Configure the BLE stack using the default settings. // Fetch the start address of the application RAM. uint32_t ram_start = 0; err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start); APP_ERROR_CHECK(err_code); // Enable BLE stack. err_code = nrf_sdh_ble_enable(&ram_start); APP_ERROR_CHECK(err_code); // Register a handler for BLE events. NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL); } /**@brief Function for initializing power management. */ static void power_management_init(void) { ret_code_t err_code; err_code = nrf_pwr_mgmt_init(); APP_ERROR_CHECK(err_code); } /**@brief Function for handling the idle state (main loop). * * @details Sleep until next the next event occurs. */ static void idle_state_handle(void) { nrf_pwr_mgmt_run(); } /**@brief Function for application main entry. */ int main(void) { timers_init(); buttons_init(); power_management_init(); #if BUTTONS_NUMBER > 2 // Check button states. // Notification Start button. m_is_notification_mode = bsp_board_button_state_get(NOTIF_BUTTON_ID); // Non-connectable advertisement start button. if (!m_is_notification_mode) { m_is_non_connectable_mode = bsp_board_button_state_get(NON_CONN_ADV_BUTTON_ID); } else { // Un-configured button. } #else m_is_notification_mode = true; #endif // Initialize SoftDevice. ble_stack_init(); if (!m_is_notification_mode && !m_is_non_connectable_mode) { // The startup was not because of button presses. This is the first start. // Go into System-Off mode. Button presses will wake the chip up. nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF); } // If we reach this point, the application was woken up // by pressing one of the two configured buttons. gap_params_init(); gatt_init(); qwr_init(); if (m_is_notification_mode) { // Notification button is pressed. Start connectable advertisement. connectable_adv_init(); service_add(); } else { non_connectable_adv_init(); } advertising_init(); advertising_start(); // Enter main loop. for (;;) { idle_state_handle(); } } /** * @} */