/** * Copyright (c) 2014 - 2017, 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_uart_over_ble_main main.c * @{ * @ingroup ble_sdk_app_its_eval * @brief UART over BLE application main file. * * This file contains the source code for a sample application that uses the Nordic UART service. * This application uses the @ref srvlib_conn_params module. */ #include #include #include "nordic_common.h" #include "nrf.h" #include "ble_hci.h" #include "ble_advdata.h" #include "ble_advertising.h" #include "ble_conn_params.h" #include "softdevice_handler.h" #include "nrf_ble_gatt.h" #include "app_timer.h" #include "app_button.h" #include "app_uart.h" #include "app_util_platform.h" #include "bsp.h" #include "bsp_btn_ble.h" #include "ble_image_transfer_service.h" #include "nrf_gpio.h" #include "cl_includes.h" #include "cl_system.h" #include "cl_hal_gpio.h" #include "ArducamMini2MP.h" #define NRF_LOG_MODULE_NAME "APP" #include "nrf_log.h" #include "nrf_log_ctrl.h" #define PCA10056_USE_FRONT_HEADER 0 /**< Use the front header (P24) for the camera module. Requires SB10-15 and SB20-25 to be soldered/cut, as described in the readme. */ #define CONN_CFG_TAG 1 /**< A tag that refers to the BLE stack configuration we set with @ref sd_ble_cfg_set. Default tag is @ref BLE_CONN_CFG_TAG_DEFAULT. */ #define APP_FEATURE_NOT_SUPPORTED BLE_GATT_STATUS_ATTERR_APP_BEGIN + 2 /**< Reply when unsupported features are requested. */ #define DEVICE_NAME "Nordic2IMAGE" /**< Name of device. Will be included in the advertising data. */ #define ITS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN /**< UUID type for the Nordic UART Service (vendor specific). */ #define APP_ADV_INTERVAL 64 /**< 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 MIN_CONN_INTERVAL MSEC_TO_UNITS(15, UNIT_1_25_MS) /**< Minimum acceptable connection interval (20 ms), Connection interval uses 1.25 ms units. */ #define MAX_CONN_INTERVAL MSEC_TO_UNITS(15, UNIT_1_25_MS) /**< Maximum acceptable connection interval (75 ms), Connection interval uses 1.25 ms units. */ #define SLAVE_LATENCY 0 /**< Slave latency. */ #define CONN_SUP_TIMEOUT MSEC_TO_UNITS(4000, UNIT_10_MS) /**< Connection supervisory timeout (4 seconds), Supervision Timeout uses 10 ms units. */ #define FIRST_CONN_PARAMS_UPDATE_DELAY APP_TIMER_TICKS(5000) /**< 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) /**< 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 MTU_REQUEST_DELAY APP_TIMER_TICKS(2000) /**< Battery level measurement interval (ticks). */ #define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */ #define UART_TX_BUF_SIZE 256 /**< UART TX buffer size. */ #define UART_RX_BUF_SIZE 256 /**< UART RX buffer size. */ APP_TIMER_DEF(m_MTU_request_timer_id); /**< Battery timer. */ static ble_its_t m_its; /**< Structure to identify the Nordic UART Service. */ static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID; /**< Handle of the current connection. */ static nrf_ble_gatt_t m_gatt; /**< GATT module instance. */ static ble_uuid_t m_adv_uuids[] = {{BLE_UUID_ITS_SERVICE, ITS_SERVICE_UUID_TYPE}}; /**< Universally unique service identifier. */ static uint16_t m_ble_its_max_data_len = BLE_GATT_ATT_MTU_DEFAULT - 3; /**< Maximum length of data (in bytes) that can be transmitted to the peer by the Nordic UART service module. */ static uint8_t m_new_command_received = 0; static uint8_t m_new_resolution, m_new_phy; static bool m_stream_mode_active = false; static ble_its_ble_params_info_t m_ble_params_info = {20, 50, 1, 1}; static bool MTU_requested_flag = false; using namespace CppLib; ArducamMini2MP myCamera; Button button1(BUTTON_1, true); enum {APP_CMD_NOCOMMAND = 0, APP_CMD_SINGLE_CAPTURE, APP_CMD_START_STREAM, APP_CMD_STOP_STREAM, APP_CMD_CHANGE_RESOLUTION, APP_CMD_CHANGE_PHY, APP_CMD_SEND_BLE_PARAMS}; /**@brief Function for assert macro callback. * * @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 analyse * 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] p_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 GAP initialization. * * @details This function will set up all the necessary GAP (Generic Access Profile) parameters of * the device. It also sets the permissions and appearance. */ static void gap_params_init(void) { uint32_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)); 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 data from the Nordic UART Service. * * @details This function will process the data received from the Nordic UART BLE Service and send * it to the UART module. * * @param[in] p_its Nordic UART Service structure. * @param[in] p_data Data to be send to UART module. * @param[in] length Length of the data. */ /**@snippet [Handling the data received over BLE] */ static void its_data_handler(ble_its_t * p_its, uint8_t * p_data, uint16_t length) { switch(p_data[0]) { // Take picture case APP_CMD_SINGLE_CAPTURE: case APP_CMD_SEND_BLE_PARAMS: m_new_command_received = p_data[0]; break; case APP_CMD_START_STREAM: m_stream_mode_active = true; m_new_command_received = p_data[0]; break; case APP_CMD_STOP_STREAM: m_stream_mode_active = false; m_new_command_received = p_data[0]; break; case APP_CMD_CHANGE_RESOLUTION: m_new_command_received = APP_CMD_CHANGE_RESOLUTION; m_new_resolution = p_data[1]; break; case APP_CMD_CHANGE_PHY: m_new_command_received = APP_CMD_CHANGE_PHY; m_new_phy = p_data[1]; break; default: printf("Unknown command!!\r\n"); break; } } /**@snippet [Handling the data received over BLE] */ /**@brief Function for initializing services that will be used by the application. */ static void services_init(void) { uint32_t err_code; ble_its_init_t its_init; memset(&its_init, 0, sizeof(its_init)); its_init.data_handler = its_data_handler; err_code = ble_its_init(&m_its, &its_init); APP_ERROR_CHECK(err_code); } /**@brief Function for handling an event from 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 errors from the Connection Parameters module. * * @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) { uint32_t err_code = bsp_indication_set(BSP_INDICATE_IDLE); APP_ERROR_CHECK(err_code); // Prepare wakeup buttons. err_code = bsp_btn_ble_sleep_mode_prepare(); APP_ERROR_CHECK(err_code); // 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); } /**@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) { uint32_t err_code; switch (ble_adv_evt) { case BLE_ADV_EVT_FAST: err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING); APP_ERROR_CHECK(err_code); break; case BLE_ADV_EVT_IDLE: sleep_mode_enter(); break; default: break; } } /**@brief Function for the application's SoftDevice event handler. * * @param[in] p_ble_evt SoftDevice 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: err_code = bsp_indication_set(BSP_INDICATE_CONNECTED); APP_ERROR_CHECK(err_code); m_conn_handle = p_ble_evt->evt.gap_evt.conn_handle; printf("Connected\r\n"); // iOS+Android support fix err_code = app_timer_start(m_MTU_request_timer_id, MTU_REQUEST_DELAY, NULL); APP_ERROR_CHECK(err_code); /* err_code = sd_ble_gattc_exchange_mtu_request(m_conn_handle, 247); APP_ERROR_CHECK(err_code);*/ break; // BLE_GAP_EVT_CONNECTED case BLE_GAP_EVT_DISCONNECTED: err_code = bsp_indication_set(BSP_INDICATE_IDLE); APP_ERROR_CHECK(err_code); m_conn_handle = BLE_CONN_HANDLE_INVALID; // Set the command to have the resolution returned to the default 320x240 m_new_command_received = APP_CMD_CHANGE_RESOLUTION; m_new_resolution = 1; m_stream_mode_active = false; m_ble_params_info.tx_phy = m_ble_params_info.rx_phy = 1; MTU_requested_flag=false; printf("Disconnected\r\n"); break; // BLE_GAP_EVT_DISCONNECTED 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; // BLE_GAP_EVT_SEC_PARAMS_REQUEST case BLE_GAP_EVT_DATA_LENGTH_UPDATE_REQUEST: { ble_gap_data_length_params_t dl_params; // Clearing the struct will effectivly set members to @ref BLE_GAP_DATA_LENGTH_AUTO memset(&dl_params, 0, sizeof(ble_gap_data_length_params_t)); err_code = sd_ble_gap_data_length_update(p_ble_evt->evt.gap_evt.conn_handle, &dl_params, NULL); APP_ERROR_CHECK(err_code); } break; case BLE_GAP_EVT_CONN_PARAM_UPDATE: { uint16_t max_con_int = p_ble_evt->evt.gap_evt.params.conn_param_update.conn_params.max_conn_interval; uint16_t min_con_int = p_ble_evt->evt.gap_evt.params.conn_param_update.conn_params.min_conn_interval; m_ble_params_info.con_interval = max_con_int; ble_its_ble_params_info_send(&m_its, &m_ble_params_info); printf("Con params updated: CI %i, %i\r\n", (int)min_con_int, (int)max_con_int); } break; case BLE_GAP_EVT_PHY_UPDATE: m_ble_params_info.tx_phy = p_ble_evt->evt.gap_evt.params.phy_update.tx_phy; m_ble_params_info.rx_phy = p_ble_evt->evt.gap_evt.params.phy_update.rx_phy; ble_its_ble_params_info_send(&m_its, &m_ble_params_info); printf("Phy update: %i, %i\r\n", (int)m_ble_params_info.tx_phy, (int)m_ble_params_info.rx_phy); 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; // BLE_GATTS_EVT_SYS_ATTR_MISSING 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; // BLE_GATTC_EVT_TIMEOUT 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; // BLE_GATTS_EVT_TIMEOUT case BLE_EVT_USER_MEM_REQUEST: err_code = sd_ble_user_mem_reply(p_ble_evt->evt.gattc_evt.conn_handle, NULL); APP_ERROR_CHECK(err_code); break; // BLE_EVT_USER_MEM_REQUEST case BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST: { ble_gatts_evt_rw_authorize_request_t req; ble_gatts_rw_authorize_reply_params_t auth_reply; req = p_ble_evt->evt.gatts_evt.params.authorize_request; if (req.type != BLE_GATTS_AUTHORIZE_TYPE_INVALID) { if ((req.request.write.op == BLE_GATTS_OP_PREP_WRITE_REQ) || (req.request.write.op == BLE_GATTS_OP_EXEC_WRITE_REQ_NOW) || (req.request.write.op == BLE_GATTS_OP_EXEC_WRITE_REQ_CANCEL)) { if (req.type == BLE_GATTS_AUTHORIZE_TYPE_WRITE) { auth_reply.type = BLE_GATTS_AUTHORIZE_TYPE_WRITE; } else { auth_reply.type = BLE_GATTS_AUTHORIZE_TYPE_READ; } auth_reply.params.write.gatt_status = APP_FEATURE_NOT_SUPPORTED; err_code = sd_ble_gatts_rw_authorize_reply(p_ble_evt->evt.gatts_evt.conn_handle, &auth_reply); APP_ERROR_CHECK(err_code); } } } break; // BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST case BLE_GATTS_EVT_EXCHANGE_MTU_REQUEST: MTU_requested_flag=true; break; default: // No implementation needed. break; } } /**@brief Function for dispatching a SoftDevice event to all modules with a SoftDevice * event handler. * * @details This function is called from the SoftDevice event interrupt handler after a * SoftDevice event has been received. * * @param[in] p_ble_evt SoftDevice event. */ static void ble_evt_dispatch(ble_evt_t * p_ble_evt) { ble_conn_params_on_ble_evt(p_ble_evt); nrf_ble_gatt_on_ble_evt(&m_gatt, p_ble_evt); ble_its_on_ble_evt(&m_its, p_ble_evt); on_ble_evt(p_ble_evt); ble_advertising_on_ble_evt(p_ble_evt); bsp_btn_ble_on_ble_evt(p_ble_evt); } /**@brief Function for the SoftDevice initialization. * * @details This function initializes the SoftDevice and the BLE event interrupt. */ static void ble_stack_init(void) { uint32_t err_code; nrf_clock_lf_cfg_t clock_lf_cfg; clock_lf_cfg.source = NRF_CLOCK_LF_SRC_XTAL; clock_lf_cfg.rc_ctiv = 0; clock_lf_cfg.rc_temp_ctiv = 0; #ifdef S140 clock_lf_cfg.xtal_accuracy = NRF_CLOCK_LF_XTAL_ACCURACY_20_PPM; #else clock_lf_cfg.accuracy = NRF_CLOCK_LF_ACCURACY_20_PPM; #endif // Initialize SoftDevice. SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL); // Fetch the start address of the application RAM. uint32_t ram_start = 0; err_code = softdevice_app_ram_start_get(&ram_start); APP_ERROR_CHECK(err_code); // Overwrite some of the default configurations for the BLE stack. ble_cfg_t ble_cfg; // Configure the maximum number of connections. memset(&ble_cfg, 0, sizeof(ble_cfg)); ble_cfg.gap_cfg.role_count_cfg.periph_role_count = BLE_GAP_ROLE_COUNT_PERIPH_DEFAULT; ble_cfg.gap_cfg.role_count_cfg.central_role_count = 0; ble_cfg.gap_cfg.role_count_cfg.central_sec_count = 0; err_code = sd_ble_cfg_set(BLE_GAP_CFG_ROLE_COUNT, &ble_cfg, ram_start); APP_ERROR_CHECK(err_code); // Configure the maximum ATT MTU. memset(&ble_cfg, 0x00, sizeof(ble_cfg)); ble_cfg.conn_cfg.conn_cfg_tag = CONN_CFG_TAG; ble_cfg.conn_cfg.params.gatt_conn_cfg.att_mtu = NRF_BLE_GATT_MAX_MTU_SIZE; err_code = sd_ble_cfg_set(BLE_CONN_CFG_GATT, &ble_cfg, ram_start); APP_ERROR_CHECK(err_code); // Configure the maximum event length. memset(&ble_cfg, 0x00, sizeof(ble_cfg)); ble_cfg.conn_cfg.conn_cfg_tag = CONN_CFG_TAG; ble_cfg.conn_cfg.params.gap_conn_cfg.event_length = 320; ble_cfg.conn_cfg.params.gap_conn_cfg.conn_count = BLE_GAP_CONN_COUNT_DEFAULT; err_code = sd_ble_cfg_set(BLE_CONN_CFG_GAP, &ble_cfg, ram_start); APP_ERROR_CHECK(err_code); // Enable BLE stack. err_code = softdevice_enable(&ram_start); APP_ERROR_CHECK(err_code); // Subscribe for BLE events. err_code = softdevice_ble_evt_handler_set(ble_evt_dispatch); APP_ERROR_CHECK(err_code); } /**@brief Function for handling events from the GATT library. */ void gatt_evt_handler(nrf_ble_gatt_t * p_gatt, const nrf_ble_gatt_evt_t * p_evt) { if ((m_conn_handle == p_evt->conn_handle) && (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED)) { m_ble_its_max_data_len = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH; m_ble_params_info.mtu = m_ble_its_max_data_len; ble_its_ble_params_info_send(&m_its, &m_ble_params_info); printf("Data len is set to 0x%X(%d), or maybe %i\r\n", m_ble_its_max_data_len, m_ble_its_max_data_len, p_evt->params.data_length); } printf("ATT MTU exchange completed. central %i peripheral %i\r\n", p_gatt->att_mtu_desired_central, p_gatt->att_mtu_desired_periph); } /**@brief Function for initializing the GATT library. */ void gatt_init(void) { ret_code_t err_code; err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler); APP_ERROR_CHECK(err_code); err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, 64); APP_ERROR_CHECK(err_code); } /**@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(); if (err_code != NRF_ERROR_INVALID_STATE) { APP_ERROR_CHECK(err_code); } } break; default: break; } } /**@brief Function for handling app_uart events. * * @details This function will receive a single character from the app_uart module and append it to * a string. The string will be be sent over BLE when the last character received was a * 'new line' '\n' (hex 0x0A) or if the string has reached the maximum data length. */ /**@snippet [Handling the data received over UART] */ void uart_event_handle(app_uart_evt_t * p_event) { static uint8_t data_array[BLE_ITS_MAX_DATA_LEN]; static uint8_t index = 0; uint32_t err_code; switch (p_event->evt_type) { case APP_UART_DATA_READY: UNUSED_VARIABLE(app_uart_get(&data_array[index])); index++; if ((data_array[index - 1] == '\n') || (index >= (m_ble_its_max_data_len))) { NRF_LOG_DEBUG("Ready to send data over BLE NUS\r\n"); NRF_LOG_HEXDUMP_DEBUG(data_array, index); do { err_code = ble_its_string_send(&m_its, data_array, index); if ( (err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_BUSY) ) { APP_ERROR_CHECK(err_code); } } while (err_code == NRF_ERROR_BUSY); index = 0; } break; case APP_UART_COMMUNICATION_ERROR: APP_ERROR_HANDLER(p_event->data.error_communication); break; case APP_UART_FIFO_ERROR: APP_ERROR_HANDLER(p_event->data.error_code); break; default: break; } } /**@snippet [Handling the data received over UART] */ /**@brief Function for initializing the UART module. */ /**@snippet [UART Initialization] */ static void uart_init(void) { uint32_t err_code; app_uart_comm_params_t comm_params; comm_params.rx_pin_no = RX_PIN_NUMBER; comm_params.tx_pin_no = TX_PIN_NUMBER; comm_params.rts_pin_no = RTS_PIN_NUMBER; comm_params.cts_pin_no = CTS_PIN_NUMBER; comm_params.flow_control = APP_UART_FLOW_CONTROL_DISABLED; comm_params.use_parity = false; comm_params.baud_rate = UART_BAUDRATE_BAUDRATE_Baud115200; APP_UART_FIFO_INIT(&comm_params, UART_RX_BUF_SIZE, UART_TX_BUF_SIZE, uart_event_handle, APP_IRQ_PRIORITY_LOWEST, err_code); APP_ERROR_CHECK(err_code); } /**@snippet [UART Initialization] */ /**@brief Function for initializing the Advertising functionality. */ static void advertising_init(void) { uint32_t err_code; ble_advdata_t advdata; ble_advdata_t scanrsp; ble_adv_modes_config_t options; // Build advertising data struct to pass into @ref ble_advertising_init. memset(&advdata, 0, sizeof(advdata)); advdata.name_type = BLE_ADVDATA_FULL_NAME; advdata.include_appearance = false; advdata.flags = BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE; memset(&scanrsp, 0, sizeof(scanrsp)); scanrsp.uuids_complete.uuid_cnt = sizeof(m_adv_uuids) / sizeof(m_adv_uuids[0]); scanrsp.uuids_complete.p_uuids = m_adv_uuids; memset(&options, 0, sizeof(options)); options.ble_adv_fast_enabled = true; options.ble_adv_fast_interval = APP_ADV_INTERVAL; options.ble_adv_fast_timeout = APP_ADV_TIMEOUT_IN_SECONDS; err_code = ble_advertising_init(&advdata, &scanrsp, &options, on_adv_evt, NULL); APP_ERROR_CHECK(err_code); ble_advertising_conn_cfg_tag_set(CONN_CFG_TAG); } static void data_len_ext_set(bool status) { uint8_t data_length = status ? (247 + 4) : (23 + 4); (void) nrf_ble_gatt_data_length_set(&m_gatt, BLE_CONN_HANDLE_INVALID, data_length); } static void gatt_mtu_set(uint16_t att_mtu) { ret_code_t err_code; err_code = nrf_ble_gatt_att_mtu_periph_set(&m_gatt, att_mtu); APP_ERROR_CHECK(err_code); err_code = nrf_ble_gatt_att_mtu_central_set(&m_gatt, att_mtu); APP_ERROR_CHECK(err_code); } /**@brief Function for initializing the nrf log module. */ static void log_init(void) { ret_code_t err_code = NRF_LOG_INIT(NULL); APP_ERROR_CHECK(err_code); } static void camera_init(void) { #if defined(BOARD_PCA10056) #if(PCA10056_USE_FRONT_HEADER == 1) myCamera.pinScl = 13; myCamera.pinSda = 15; myCamera.pinSck = 21; myCamera.pinMiso = 23; myCamera.pinMosi = 25; myCamera.pinCsn = 32 + 9; #else myCamera.pinScl = 27; myCamera.pinSda = 26; myCamera.pinSck = 32 + 15; myCamera.pinMiso = 32 + 14; myCamera.pinMosi = 32 + 13; myCamera.pinCsn = 32 + 12; #endif #elif defined(BOARD_PCA10040) myCamera.pinScl = 27; myCamera.pinSda = 26; myCamera.pinSck = 25; myCamera.pinMiso = 24; myCamera.pinMosi = 23; myCamera.pinCsn = 22; #else #error Board not defined or not supported #endif myCamera.open(); myCamera.setResolution(OV2640_320x240); } /**@brief Function for placing the application in low power state while waiting for events. */ static void power_manage(void) { uint32_t err_code = sd_app_evt_wait(); APP_ERROR_CHECK(err_code); } void cpplibLogFunction(LogSeverity severity, char *module, uint32_t errorCode, char *message) { printf("%s - %s\r\n", module, message); } static void MTU_request_timeout_handler(void * p_context) { ret_code_t err_code; if (!MTU_requested_flag) { err_code = sd_ble_gattc_exchange_mtu_request(m_conn_handle, 247); //APP_ERROR_CHECK(err_code); } } /**@brief Function for the Timer initialization. * * @details Initializes the timer module. This creates and starts application timers. */ 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_MTU_request_timer_id, APP_TIMER_MODE_SINGLE_SHOT, MTU_request_timeout_handler); APP_ERROR_CHECK(err_code); } /**@brief Application main function. */ int main(void) { uint32_t err_code; uint32_t img_data_length = 0; uint8_t img_data_buffer[255]; // Initialize. timers_init(); uart_init(); log_init(); // Start application timers. ble_stack_init(); gap_params_init(); gatt_init(); services_init(); advertising_init(); conn_params_init(); printf("\r\nUART Start!\r\n"); nrfSystem.setLogHandler(cpplibLogFunction); nrfSystem.setLogDefaultSeverity(LS_DEBUG); err_code = ble_advertising_start(BLE_ADV_MODE_FAST); APP_ERROR_CHECK(err_code); camera_init(); data_len_ext_set(true); gatt_mtu_set(247); // Enter main loop. for (;;) { uint32_t image_size; ble_gap_phys_t gap_phys_settings; switch(m_new_command_received) { case APP_CMD_SINGLE_CAPTURE: m_new_command_received = APP_CMD_NOCOMMAND; //ble_its_send_file(&m_its, test_file, TEST_FILE_SIZE); if(myCamera.bytesAvailable() == 0) { printf("Starting capture...\r\n"); myCamera.startSingleCapture(); image_size = myCamera.bytesAvailable(); printf("Capture complete: size %i bytes\r\n", (int)(image_size)); ble_its_img_info_t image_info; image_info.file_size_bytes = image_size - 1; ble_its_img_info_send(&m_its, &image_info); // Flush the first byte (or the JPG image will be corrupted) myCamera.fillBuffer(img_data_buffer, 1); } break; case APP_CMD_START_STREAM: m_new_command_received = APP_CMD_NOCOMMAND; printf("Stream mode enabled\r\n"); break; case APP_CMD_STOP_STREAM: m_new_command_received = APP_CMD_NOCOMMAND; m_stream_mode_active = false; printf("Stream mode disabled\r\n"); break; case APP_CMD_CHANGE_RESOLUTION: m_new_command_received = APP_CMD_NOCOMMAND; printf("Change resolution to mode: %i\r\n", (int)m_new_resolution); switch(m_new_resolution) { case 0: myCamera.setResolution(OV2640_160x120); break; case 1: myCamera.setResolution(OV2640_320x240); break; case 2: myCamera.setResolution(OV2640_640x480); break; case 3: myCamera.setResolution(OV2640_800x600); break; case 4: myCamera.setResolution(OV2640_1024x768); break; case 5: myCamera.setResolution(OV2640_1600x1200); break; } break; case APP_CMD_CHANGE_PHY: m_new_command_received = APP_CMD_NOCOMMAND; printf("Attempting to change phy.\r\n"); gap_phys_settings.tx_phys = (m_new_phy == 0 ? BLE_GAP_PHY_1MBPS : BLE_GAP_PHY_2MBPS); gap_phys_settings.rx_phys = (m_new_phy == 0 ? BLE_GAP_PHY_1MBPS : BLE_GAP_PHY_2MBPS); #ifdef S140 sd_ble_gap_phy_request(m_its.conn_handle, &gap_phys_settings); #else sd_ble_gap_phy_update(m_its.conn_handle, &gap_phys_settings); #endif break; case APP_CMD_SEND_BLE_PARAMS: m_new_command_received = APP_CMD_NOCOMMAND; ble_its_ble_params_info_send(&m_its, &m_ble_params_info); break; default: break; } if(m_stream_mode_active) { if(img_data_length == 0 && myCamera.bytesAvailable() == 0) { myCamera.startSingleCapture(); image_size = myCamera.bytesAvailable(); ble_its_img_info_t image_info; image_info.file_size_bytes = image_size - 1; ble_its_img_info_send(&m_its, &image_info); // Flush the first byte (or the JPG image will be corrupted) myCamera.fillBuffer(img_data_buffer, 1); } } if(img_data_length > 0 || myCamera.bytesAvailable() > 0) { if(img_data_length == 0) { img_data_length = myCamera.fillBuffer(img_data_buffer, m_ble_its_max_data_len); } if(ble_its_send_file_fragment(&m_its, img_data_buffer, img_data_length) == NRF_SUCCESS) { img_data_length = 0; } } if(m_new_command_received == APP_CMD_NOCOMMAND) { power_manage(); } } } /** * @} */