1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "ublox_spp_le_counter.c" 39 40 // ***************************************************************************** 41 /* EXAMPLE_START(ublox_spp_le_counter): LE u-blox SPP-like Heartbeat Server 42 * 43 */ 44 // ***************************************************************************** 45 46 #include <stdint.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "btstack.h" 52 #include "ble/gatt-service/device_information_service_server.h" 53 #include "ble/gatt-service/ublox_spp_service_server.h" 54 55 // ublox_spp_le_counter.gatt contains the declaration of the provided GATT Services + Characteristics 56 // ublox_spp_le_counter.h contains the binary representation of ublox_spp_le_counter.gatt 57 // it is generated by the build system by calling: $BTSTACK_ROOT/tool/compile_gatt.py ublox_spp_le_counter.gatt ublox_spp_le_counter.h 58 // it needs to be regenerated when the GATT Database declared in ublox_spp_le_counter.gatt file is modified 59 #include "ublox_spp_le_counter.h" 60 61 62 #define HEARTBEAT_PERIOD_MS 1000 63 64 /* @section Main Application Setup 65 * 66 * @text Listing MainConfiguration shows main application code. 67 * It initializes L2CAP, the Security Manager and configures the ATT Server with the pre-compiled 68 * ATT Database generated from $ublox_le_counter.gatt$. 69 * Additionally, it enables the Battery Service Server with the current battery level. 70 * Finally, it configures the advertisements 71 * and the heartbeat handler and boots the Bluetooth stack. 72 * In this example, the Advertisement contains the Flags attribute and the device name. 73 * The flag 0x06 indicates: LE General Discoverable Mode and BR/EDR not supported. 74 */ 75 76 /* LISTING_START(MainConfiguration): Init L2CAP SM ATT Server and start heartbeat timer */ 77 static btstack_timer_source_t heartbeat; 78 static hci_con_handle_t con_handle = HCI_CON_HANDLE_INVALID; 79 static btstack_context_callback_registration_t send_request; 80 static btstack_packet_callback_registration_t hci_event_callback_registration; 81 82 const uint8_t adv_data[] = { 83 // Flags general discoverable, BR/EDR not supported 84 2, BLUETOOTH_DATA_TYPE_FLAGS, 0x06, 85 // Name 86 5, BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME, '6', '-','5', '6', 87 // UUID ... 88 17, BLUETOOTH_DATA_TYPE_COMPLETE_LIST_OF_128_BIT_SERVICE_CLASS_UUIDS, 0x1, 0xd7, 0xe9, 0x1, 0x4f, 0xf3, 0x44, 0xe7, 0x83, 0x8f, 0xe2, 0x26, 0xb9, 0xe1, 0x56, 0x24, 89 }; 90 91 const uint8_t adv_data_len = sizeof(adv_data); 92 93 /* LISTING_END */ 94 95 /* 96 * @section Heartbeat Handler 97 * 98 * @text The heartbeat handler updates the value of the single Characteristic provided in this example, 99 * and request a ATT_EVENT_CAN_SEND_NOW to send a notification if enabled see Listing heartbeat. 100 */ 101 102 /* LISTING_START(heartbeat): Hearbeat Handler */ 103 static int counter = 0; 104 static char counter_string[30]; 105 static int counter_string_len; 106 107 static void beat(void){ 108 counter++; 109 counter_string_len = sprintf(counter_string, "BTstack counter %03u", counter); 110 } 111 112 static void ublox_can_send(void * context){ 113 UNUSED(context); 114 beat(); 115 printf("SEND: %s\n", counter_string); 116 ublox_spp_service_server_send(con_handle, (uint8_t*) counter_string, counter_string_len); 117 } 118 119 static void heartbeat_handler(struct btstack_timer_source *ts){ 120 if (con_handle != HCI_CON_HANDLE_INVALID) { 121 send_request.callback = &ublox_can_send; 122 ublox_spp_service_server_request_can_send_now(&send_request, con_handle); 123 } 124 btstack_run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS); 125 btstack_run_loop_add_timer(ts); 126 } 127 /* LISTING_END */ 128 129 static void ublox_data(hci_con_handle_t handle, const uint8_t * data, uint16_t size){ 130 if (size == 0 && con_handle == HCI_CON_HANDLE_INVALID ){ 131 con_handle = handle; 132 printf("Connected with handle 0x%04x\n", con_handle); 133 } else { 134 printf("RECV: "); 135 printf_hexdump(data, size); 136 } 137 } 138 139 static void ublox_flow_control(hci_con_handle_t handle, uint16_t credits){ 140 if (con_handle == HCI_CON_HANDLE_INVALID ){ 141 con_handle = handle; 142 printf("Connected with handle 0x%04x\n", handle); 143 } 144 printf("credits %d\n", credits); 145 } 146 /* 147 * @section Packet Handler 148 * 149 * @text The packet handler is used to: 150 * - stop the counter after a disconnect 151 */ 152 153 /* LISTING_START(packetHandler): Packet Handler */ 154 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 155 UNUSED(channel); 156 UNUSED(size); 157 158 switch (packet_type) { 159 case HCI_EVENT_PACKET: 160 switch (hci_event_packet_get_type(packet)) { 161 case HCI_EVENT_DISCONNECTION_COMPLETE: 162 con_handle = HCI_CON_HANDLE_INVALID; 163 break; 164 default: 165 break; 166 } 167 break; 168 default: 169 break; 170 } 171 } 172 /* LISTING_END */ 173 174 175 int btstack_main(void); 176 int btstack_main(void) 177 { 178 // register for HCI events 179 hci_event_callback_registration.callback = &packet_handler; 180 hci_add_event_handler(&hci_event_callback_registration); 181 182 l2cap_init(); 183 184 // setup LE device DB 185 le_device_db_init(); 186 187 // setup SM: Display only 188 sm_init(); 189 190 // setup ATT server 191 att_server_init(profile_data, NULL, NULL); 192 // setup device information service 193 device_information_service_server_init(); 194 // setup Nordic SPP service 195 ublox_spp_service_server_init(&ublox_data, &ublox_flow_control); 196 197 // setup advertisements 198 uint16_t adv_int_min = 0x0030; 199 uint16_t adv_int_max = 0x0030; 200 uint8_t adv_type = 0; 201 bd_addr_t null_addr; 202 memset(null_addr, 0, 6); 203 gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00); 204 gap_advertisements_set_data(adv_data_len, (uint8_t*) adv_data); 205 gap_advertisements_enable(1); 206 207 // set one-shot timer 208 heartbeat.process = &heartbeat_handler; 209 btstack_run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS); 210 btstack_run_loop_add_timer(&heartbeat); 211 212 // beat once 213 beat(); 214 215 // turn on! 216 hci_power_control(HCI_POWER_ON); 217 218 return 0; 219 } 220 /* EXAMPLE_END */ 221