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‎Bluetooth/app.c‎

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/***************************************************************************//**
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* @file app.c
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* @brief Silicon Labs Empty Example Project
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*
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* This example demonstrates the bare minimum needed for a Blue Gecko C application
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* that allows Over-the-Air Device Firmware Upgrading (OTA DFU). The application
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* starts advertising after boot and restarts advertising after a connection is closed.
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*******************************************************************************
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* # License
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* <b>Copyright 2018 Silicon Laboratories Inc. www.silabs.com</b>
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*******************************************************************************
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*
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* The licensor of this software is Silicon Laboratories Inc. Your use of this
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* software is governed by the terms of Silicon Labs Master Software License
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* Agreement (MSLA) available at
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* www.silabs.com/about-us/legal/master-software-license-agreement. This
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* software is distributed to you in Source Code format and is governed by the
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* sections of the MSLA applicable to Source Code.
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*
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******************************************************************************/
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/* Bluetooth stack headers */
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#include "bg_types.h"
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#include "native_gecko.h"
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#include "gatt_db.h"
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#include "app.h"
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/* Print boot message */
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static void bootMessage(struct gecko_msg_system_boot_evt_t *bootevt);
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/* Flag for indicating DFU Reset must be performed */
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static uint8_t boot_to_dfu = 0;
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/* Main application */
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void appMain(gecko_configuration_t *pconfig)
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{
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#if DISABLE_SLEEP > 0
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pconfig->sleep.flags = 0;
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#endif
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/* Initialize debug prints. Note: debug prints are off by default. See DEBUG_LEVEL in app.h */
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initLog();
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/* Initialize stack */
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gecko_init(pconfig);
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while (1) {
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/* Event pointer for handling events */
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struct gecko_cmd_packet* evt;
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/* if there are no events pending then the next call to gecko_wait_event() may cause
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* device go to deep sleep. Make sure that debug prints are flushed before going to sleep */
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if (!gecko_event_pending()) {
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flushLog();
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}
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/* Check for stack event. This is a blocking event listener. If you want non-blocking please see UG136. */
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evt = gecko_wait_event();
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/* Handle events */
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switch (BGLIB_MSG_ID(evt->header)) {
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/* This boot event is generated when the system boots up after reset.
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* Do not call any stack commands before receiving the boot event.
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* Here the system is set to start advertising immediately after boot procedure. */
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case gecko_evt_system_boot_id:
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bootMessage(&(evt->data.evt_system_boot));
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printLog("boot event - starting advertising\r\n");
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/* Set advertising parameters. 100ms advertisement interval.
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* The first parameter is advertising set handle
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* The next two parameters are minimum and maximum advertising interval, both in
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* units of (milliseconds * 1.6).
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* The last two parameters are duration and maxevents left as default. */
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gecko_cmd_le_gap_set_advertise_timing(0, 160, 160, 0, 0);
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/* Start general advertising and enable connections. */
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gecko_cmd_le_gap_start_advertising(0, le_gap_general_discoverable, le_gap_connectable_scannable);
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break;
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case gecko_evt_le_connection_opened_id:
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printLog("connection opened\r\n");
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break;
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case gecko_evt_le_connection_closed_id:
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printLog("connection closed, reason: 0x%2.2x\r\n", evt->data.evt_le_connection_closed.reason);
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/* Check if need to boot to OTA DFU mode */
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if (boot_to_dfu) {
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/* Enter to OTA DFU mode */
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gecko_cmd_system_reset(2);
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} else {
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/* Restart advertising after client has disconnected */
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gecko_cmd_le_gap_start_advertising(0, le_gap_general_discoverable, le_gap_connectable_scannable);
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}
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break;
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/* Events related to OTA upgrading
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----------------------------------------------------------------------------- */
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/* Check if the user-type OTA Control Characteristic was written.
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* If ota_control was written, boot the device into Device Firmware Upgrade (DFU) mode. */
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case gecko_evt_gatt_server_user_write_request_id:
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if (evt->data.evt_gatt_server_user_write_request.characteristic == gattdb_ota_control) {
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/* Set flag to enter to OTA mode */
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boot_to_dfu = 1;
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/* Send response to Write Request */
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gecko_cmd_gatt_server_send_user_write_response(
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evt->data.evt_gatt_server_user_write_request.connection,
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gattdb_ota_control,
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bg_err_success);
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/* Close connection to enter to DFU OTA mode */
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gecko_cmd_le_connection_close(evt->data.evt_gatt_server_user_write_request.connection);
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}
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break;
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/* Add additional event handlers as your application requires */
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default:
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break;
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}
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}
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}
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/* Print stack version and local Bluetooth address as boot message */
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static void bootMessage(struct gecko_msg_system_boot_evt_t *bootevt)
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{
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#if DEBUG_LEVEL
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bd_addr local_addr;
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int i;
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printLog("stack version: %u.%u.%u\r\n", bootevt->major, bootevt->minor, bootevt->patch);
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local_addr = gecko_cmd_system_get_bt_address()->address;
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printLog("local BT device address: ");
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for (i = 0; i < 5; i++) {
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printLog("%2.2x:", local_addr.addr[5 - i]);
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}
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printLog("%2.2x\r\n", local_addr.addr[0]);
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#endif
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}

‎Bluetooth/app.h‎

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/***************************************************************************//**
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* @brief app.h
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*******************************************************************************
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* # License
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* <b>Copyright 2018 Silicon Laboratories Inc. www.silabs.com</b>
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*******************************************************************************
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*
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* The licensor of this software is Silicon Laboratories Inc. Your use of this
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* software is governed by the terms of Silicon Labs Master Software License
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* Agreement (MSLA) available at
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* www.silabs.com/about-us/legal/master-software-license-agreement. This
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* software is distributed to you in Source Code format and is governed by the
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* sections of the MSLA applicable to Source Code.
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*
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******************************************************************************/
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#ifndef APP_H_
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#define APP_H_
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#include "gecko_configuration.h"
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/* DEBUG_LEVEL is used to enable/disable debug prints. Set DEBUG_LEVEL to 1 to enable debug prints */
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#define DEBUG_LEVEL 0
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/* Set this value to 1 if you want to disable deep sleep completely */
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#define DISABLE_SLEEP 0
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#if DEBUG_LEVEL
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#include "retargetserial.h"
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#include <stdio.h>
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#endif
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#if DEBUG_LEVEL
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#define initLog() RETARGET_SerialInit()
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#define flushLog() RETARGET_SerialFlush()
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#define printLog(...) printf(__VA_ARGS__)
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#else
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#define initLog()
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#define flushLog()
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#define printLog(...)
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#endif
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/* Main application */
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void appMain(gecko_configuration_t *pconfig);
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#endif

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