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_le_counter.c" 39 40 // ***************************************************************************** 41 /* EXAMPLE_START(ublox_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 "ublox_spp_le_counter.h" 52 #include "btstack.h" 53 #include "ble/gatt-service/ublox_spp_service_server.h" 54 55 #define HEARTBEAT_PERIOD_MS 1000 56 57 /* @section Main Application Setup 58 * 59 * @text Listing MainConfiguration shows main application code. 60 * It initializes L2CAP, the Security Manager and configures the ATT Server with the pre-compiled 61 * ATT Database generated from $ublox_le_counter.gatt$. 62 * Additionally, it enables the Battery Service Server with the current battery level. 63 * Finally, it configures the advertisements 64 * and the heartbeat handler and boots the Bluetooth stack. 65 * In this example, the Advertisement contains the Flags attribute and the device name. 66 * The flag 0x06 indicates: LE General Discoverable Mode and BR/EDR not supported. 67 */ 68 69 /* LISTING_START(MainConfiguration): Init L2CAP SM ATT Server and start heartbeat timer */ 70 static btstack_timer_source_t heartbeat; 71 static hci_con_handle_t con_handle = HCI_CON_HANDLE_INVALID; 72 static btstack_context_callback_registration_t send_request; 73 static btstack_packet_callback_registration_t hci_event_callback_registration; 74 75 const uint8_t adv_data[] = { 76 // Flags general discoverable, BR/EDR not supported 77 2, BLUETOOTH_DATA_TYPE_FLAGS, 0x06, 78 // Name 79 5, BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME, '6', '-','5', '6', 80 // UUID ... 81 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, 82 }; 83 84 const uint8_t adv_data_len = sizeof(adv_data); 85 86 /* LISTING_END */ 87 88 /* 89 * @section Heartbeat Handler 90 * 91 * @text The heartbeat handler updates the value of the single Characteristic provided in this example, 92 * and request a ATT_EVENT_CAN_SEND_NOW to send a notification if enabled see Listing heartbeat. 93 */ 94 95 /* LISTING_START(heartbeat): Hearbeat Handler */ 96 static int counter = 0; 97 static char counter_string[30]; 98 static int counter_string_len; 99 100 static void beat(void){ 101 counter++; 102 counter_string_len = sprintf(counter_string, "BTstack counter %03u", counter); 103 } 104 105 static void ublox_can_send(void * context){ 106 UNUSED(context); 107 beat(); 108 printf("SEND: %s\n", counter_string); 109 ublox_spp_service_server_send(con_handle, (uint8_t*) counter_string, counter_string_len); 110 } 111 112 static void heartbeat_handler(struct btstack_timer_source *ts){ 113 if (con_handle != HCI_CON_HANDLE_INVALID) { 114 send_request.callback = &ublox_can_send; 115 ublox_spp_service_server_request_can_send_now(&send_request, con_handle); 116 } 117 btstack_run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS); 118 btstack_run_loop_add_timer(ts); 119 } 120 /* LISTING_END */ 121 122 static void ublox_data(hci_con_handle_t handle, const uint8_t * data, uint16_t size){ 123 if (size == 0 && con_handle == HCI_CON_HANDLE_INVALID ){ 124 con_handle = handle; 125 printf("Connected with handle 0x%04x\n", con_handle); 126 } else { 127 printf("RECV: "); 128 printf_hexdump(data, size); 129 } 130 } 131 132 static void ublox_flow_control(hci_con_handle_t handle, uint16_t credits){ 133 if (con_handle == HCI_CON_HANDLE_INVALID ){ 134 con_handle = handle; 135 printf("Connected with handle 0x%04x\n", handle); 136 } 137 printf("credits %d\n", credits); 138 } 139 /* 140 * @section Packet Handler 141 * 142 * @text The packet handler is used to: 143 * - stop the counter after a disconnect 144 */ 145 146 /* LISTING_START(packetHandler): Packet Handler */ 147 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 148 UNUSED(channel); 149 UNUSED(size); 150 151 switch (packet_type) { 152 case HCI_EVENT_PACKET: 153 switch (hci_event_packet_get_type(packet)) { 154 case HCI_EVENT_DISCONNECTION_COMPLETE: 155 con_handle = HCI_CON_HANDLE_INVALID; 156 break; 157 default: 158 break; 159 } 160 break; 161 } 162 } 163 /* LISTING_END */ 164 165 166 int btstack_main(void); 167 int btstack_main(void) 168 { 169 // register for HCI events 170 hci_event_callback_registration.callback = &packet_handler; 171 hci_add_event_handler(&hci_event_callback_registration); 172 173 l2cap_init(); 174 175 // setup LE device DB 176 le_device_db_init(); 177 178 // setup SM: Display only 179 sm_init(); 180 181 // setup ATT server 182 att_server_init(profile_data, NULL, NULL); 183 // setup device information service 184 device_information_service_server_init(); 185 // setup Nordic SPP service 186 ublox_spp_service_server_init(&ublox_data, &ublox_flow_control); 187 188 // setup advertisements 189 uint16_t adv_int_min = 0x0030; 190 uint16_t adv_int_max = 0x0030; 191 uint8_t adv_type = 0; 192 bd_addr_t null_addr; 193 memset(null_addr, 0, 6); 194 gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00); 195 gap_advertisements_set_data(adv_data_len, (uint8_t*) adv_data); 196 gap_advertisements_enable(1); 197 198 // set one-shot timer 199 heartbeat.process = &heartbeat_handler; 200 btstack_run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS); 201 btstack_run_loop_add_timer(&heartbeat); 202 203 // beat once 204 beat(); 205 206 // turn on! 207 hci_power_control(HCI_POWER_ON); 208 209 return 0; 210 } 211 /* EXAMPLE_END */ 212