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__ "nordic_spp_le_counter.c" 39 40 // ***************************************************************************** 41 /* EXAMPLE_START(nordic_le_counter): LE Peripheral - Nordic SPP-like profile 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/nordic_spp_service_server.h" 53 54 // nordic_spp_le_counter.gatt contains the declaration of the provided GATT Services + Characteristics 55 // nordic_spp_le_counter.h contains the binary representation of nordic_spp_le_counter.gatt 56 // it is generated by the build system by calling: $BTSTACK_ROOT/tool/compile_gatt.py nordic_spp_le_counter.gatt nordic_spp_le_counter.h 57 // it needs to be regenerated when the GATT Database declared in nordic_spp_le_counter.gatt file is modified 58 #include "nordic_spp_le_counter.h" 59 60 61 #define HEARTBEAT_PERIOD_MS 1000 62 63 /* @section Main Application Setup 64 * 65 * @text Listing MainConfiguration shows main application code. 66 * It initializes L2CAP, the Security Manager and configures the ATT Server with the pre-compiled 67 * ATT Database generated from $nordic_le_counter.gatt$. 68 * Additionally, it enables the Battery Service Server with the current battery level. 69 * Finally, it configures the advertisements 70 * and the heartbeat handler and boots the Bluetooth stack. 71 * In this example, the Advertisement contains the Flags attribute and the device name. 72 * The flag 0x06 indicates: LE General Discoverable Mode and BR/EDR not supported. 73 */ 74 75 /* LISTING_START(MainConfiguration): Init L2CAP SM ATT Server and start heartbeat timer */ 76 static btstack_timer_source_t heartbeat; 77 static hci_con_handle_t con_handle = HCI_CON_HANDLE_INVALID; 78 static btstack_context_callback_registration_t send_request; 79 static btstack_packet_callback_registration_t hci_event_callback_registration; 80 81 const uint8_t adv_data[] = { 82 // Flags general discoverable, BR/EDR not supported 83 2, BLUETOOTH_DATA_TYPE_FLAGS, 0x06, 84 // Name 85 8, BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME, 'n', 'R', 'F',' ', 'S', 'P', 'P', 86 // UUID ... 87 17, BLUETOOTH_DATA_TYPE_COMPLETE_LIST_OF_128_BIT_SERVICE_CLASS_UUIDS, 0x9e, 0xca, 0xdc, 0x24, 0xe, 0xe5, 0xa9, 0xe0, 0x93, 0xf3, 0xa3, 0xb5, 0x1, 0x0, 0x40, 0x6e, 88 }; 89 const uint8_t adv_data_len = sizeof(adv_data); 90 91 /* LISTING_END */ 92 93 /* 94 * @section Heartbeat Handler 95 * 96 * @text The heartbeat handler updates the value of the single Characteristic provided in this example, 97 * and request a ATT_EVENT_CAN_SEND_NOW to send a notification if enabled see Listing heartbeat. 98 */ 99 100 /* LISTING_START(heartbeat): Hearbeat Handler */ 101 static int counter = 0; 102 static char counter_string[30]; 103 static int counter_string_len; 104 105 static void beat(void){ 106 counter++; 107 counter_string_len = sprintf(counter_string, "BTstack counter %03u", counter); 108 } 109 110 static void nordic_can_send(void * context){ 111 UNUSED(context); 112 printf("SEND: %s\n", counter_string); 113 nordic_spp_service_server_send(con_handle, (uint8_t*) counter_string, counter_string_len); 114 } 115 116 static void heartbeat_handler(struct btstack_timer_source *ts){ 117 if (con_handle != HCI_CON_HANDLE_INVALID) { 118 beat(); 119 send_request.callback = &nordic_can_send; 120 nordic_spp_service_server_request_can_send_now(&send_request, con_handle); 121 } 122 btstack_run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS); 123 btstack_run_loop_add_timer(ts); 124 } 125 /* LISTING_END */ 126 127 static void nordic_data_received(hci_con_handle_t tx_con_handle, const uint8_t * data, uint16_t size){ 128 if (size == 0 && con_handle == HCI_CON_HANDLE_INVALID ){ 129 con_handle = tx_con_handle; 130 printf("Connected with handle 0x%04x\n", con_handle); 131 } else { 132 printf("RECV: "); 133 printf_hexdump(data, size); 134 } 135 } 136 137 /* 138 * @section Packet Handler 139 * 140 * @text The packet handler is used to: 141 * - stop the counter after a disconnect 142 */ 143 144 /* LISTING_START(packetHandler): Packet Handler */ 145 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 146 UNUSED(channel); 147 UNUSED(size); 148 149 switch (packet_type) { 150 case HCI_EVENT_PACKET: 151 switch (hci_event_packet_get_type(packet)) { 152 case HCI_EVENT_DISCONNECTION_COMPLETE: 153 con_handle = HCI_CON_HANDLE_INVALID; 154 break; 155 default: 156 break; 157 } 158 break; 159 } 160 } 161 /* LISTING_END */ 162 163 164 int btstack_main(void); 165 int btstack_main(void) 166 { 167 // register for HCI events 168 hci_event_callback_registration.callback = &packet_handler; 169 hci_add_event_handler(&hci_event_callback_registration); 170 171 l2cap_init(); 172 173 // setup LE device DB 174 le_device_db_init(); 175 176 // setup SM: Display only 177 sm_init(); 178 179 // setup ATT server 180 att_server_init(profile_data, NULL, NULL); 181 182 // setup Nordic SPP service 183 nordic_spp_service_server_init(&nordic_data_received); 184 185 // setup advertisements 186 uint16_t adv_int_min = 0x0030; 187 uint16_t adv_int_max = 0x0030; 188 uint8_t adv_type = 0; 189 bd_addr_t null_addr; 190 memset(null_addr, 0, 6); 191 gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00); 192 gap_advertisements_set_data(adv_data_len, (uint8_t*) adv_data); 193 gap_advertisements_enable(1); 194 195 // set one-shot timer 196 heartbeat.process = &heartbeat_handler; 197 btstack_run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS); 198 btstack_run_loop_add_timer(&heartbeat); 199 200 // beat once 201 beat(); 202 203 // turn on! 204 hci_power_control(HCI_POWER_ON); 205 206 return 0; 207 } 208 /* EXAMPLE_END */ 209