mirror of
https://github.com/bluekitchen/btstack.git
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244 lines
8.5 KiB
C
244 lines
8.5 KiB
C
/*
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* Copyright (C) 2014 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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// *****************************************************************************
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//
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// accel_demo
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//
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// *****************************************************************************
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <msp430x54x.h>
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#include "bt_control_cc256x.h"
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#include "hal_adc.h"
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#include "hal_board.h"
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#include "hal_compat.h"
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#include "hal_usb.h"
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#include "hci_cmds.h"
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#include "run_loop.h"
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#include "classic/sdp_util.h"
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#include "hci.h"
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#include "l2cap.h"
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#include "btstack_memory.h"
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#include "classic/remote_device_db.h"
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#include "classic/rfcomm.h"
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#include "classic/sdp.h"
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#include "btstack-config.h"
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#define HEARTBEAT_PERIOD_MS 1000
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#define FONT_HEIGHT 12 // Each character has 13 lines
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#define FONT_WIDTH 8
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static int row = 0;
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char lineBuffer[80];
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static uint8_t rfcomm_channel_nr = 1;
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static uint16_t rfcomm_channel_id;
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static uint8_t spp_service_buffer[150];
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// SPP description
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static uint8_t accel_buffer[6];
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static void prepare_accel_packet(void){
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int16_t accl_x;
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int16_t accl_y;
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int16_t accl_z;
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/* read the digital accelerometer x- direction and y - direction output */
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halAccelerometerRead((int *)&accl_x, (int *)&accl_y, (int *)&accl_z);
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accel_buffer[0] = 0x01; // Start of "header"
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accel_buffer[1] = accl_x;
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accel_buffer[2] = (accl_x >> 8);
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accel_buffer[3] = accl_y;
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accel_buffer[4] = (accl_y >> 8);
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int index;
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uint8_t checksum = 0;
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for (index = 0; index < 5; index++) {
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checksum += accel_buffer[index];
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}
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accel_buffer[5] = checksum;
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/* start the ADC to read the next accelerometer output */
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halAdcStartRead();
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printf("Accel: X: %04d, Y: %04d, Z: %04d\n\r", accl_x, accl_y, accl_z);
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}
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static void send_packet(void){
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int err = rfcomm_send_internal(rfcomm_channel_id, (uint8_t *)accel_buffer, sizeof(accel_buffer));
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switch(err){
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case 0:
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prepare_accel_packet();
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break;
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case BTSTACK_ACL_BUFFERS_FULL:
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break;
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default:
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printf("rfcomm_send_internal() -> err %d\n\r", err);
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break;
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}
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}
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// Bluetooth logic
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static void packet_handler (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
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bd_addr_t event_addr;
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uint8_t rfcomm_channel_nr;
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uint16_t mtu;
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int err;
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switch (packet_type) {
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case HCI_EVENT_PACKET:
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switch (packet[0]) {
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case BTSTACK_EVENT_STATE:
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if (packet[2] == HCI_STATE_WORKING) {
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printf("BTstack is up and running\n");
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}
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break;
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case HCI_EVENT_COMMAND_COMPLETE:
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if (COMMAND_COMPLETE_EVENT(packet, hci_read_bd_addr)){
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bt_flip_addr(event_addr, &packet[6]);
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printf("BD-ADDR: %s\n\r", bd_addr_to_str(event_addr));
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break;
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}
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break;
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case HCI_EVENT_LINK_KEY_REQUEST:
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// deny link key request
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printf("Link key request\n\r");
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bt_flip_addr(event_addr, &packet[2]);
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hci_send_cmd(&hci_link_key_request_negative_reply, &event_addr);
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break;
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case HCI_EVENT_PIN_CODE_REQUEST:
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// inform about pin code request
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printf("Pin code request - using '0000'\n\r");
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bt_flip_addr(event_addr, &packet[2]);
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hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000");
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break;
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case RFCOMM_EVENT_INCOMING_CONNECTION:
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// data: event (8), len(8), address(48), channel (8), rfcomm_cid (16)
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bt_flip_addr(event_addr, &packet[2]);
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rfcomm_channel_nr = packet[8];
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rfcomm_channel_id = READ_BT_16(packet, 9);
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printf("RFCOMM channel %u requested for %s\n\r", rfcomm_channel_nr, bd_addr_to_str(event_addr));
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rfcomm_accept_connection_internal(rfcomm_channel_id);
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break;
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case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE:
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// data: event(8), len(8), status (8), address (48), server channel(8), rfcomm_cid(16), max frame size(16)
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if (packet[2]) {
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printf("RFCOMM channel open failed, status %u\n\r", packet[2]);
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} else {
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rfcomm_channel_id = READ_BT_16(packet, 12);
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mtu = READ_BT_16(packet, 14);
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printf("\n\rRFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n\r", rfcomm_channel_id, mtu);
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}
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break;
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case DAEMON_EVENT_HCI_PACKET_SENT:
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case RFCOMM_EVENT_CREDITS:
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if (rfcomm_can_send_packet_now(rfcomm_channel_id)) send_packet();
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break;
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case RFCOMM_EVENT_CHANNEL_CLOSED:
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rfcomm_channel_id = 0;
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break;
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default:
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break;
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}
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break;
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default:
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break;
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}
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}
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int btstack_main(int argc, const char * argv[]);
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int btstack_main(int argc, const char * argv[]){
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// Accel
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halAccelerometerInit();
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prepare_accel_packet();
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// init L2CAP
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l2cap_init();
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l2cap_register_packet_handler(packet_handler);
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// init RFCOMM
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rfcomm_init();
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rfcomm_register_packet_handler(packet_handler);
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rfcomm_register_service_internal(NULL, rfcomm_channel_nr, 100); // reserved channel, mtu=100
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// init SDP, create record for SPP and register with SDP
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sdp_init();
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memset(spp_service_buffer, 0, sizeof(spp_service_buffer));
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service_record_item_t * service_record_item = (service_record_item_t *) spp_service_buffer;
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sdp_create_spp_service( (uint8_t*) &service_record_item->service_record, 1, "SPP Accel");
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printf("SDP service buffer size: %u\n\r", (uint16_t) (sizeof(service_record_item_t) + de_get_len((uint8_t*) &service_record_item->service_record)));
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sdp_register_service_internal(NULL, service_record_item);
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// ready - enable irq used in h4 task
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__enable_interrupt();
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// set local name
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gap_set_local_name("BTstack SPP Sensor");
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// make discoverable
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hci_discoverable_control(1);
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// turn on!
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hci_power_control(HCI_POWER_ON);
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return 0;
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}
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/*
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rfcomm_send_internal gets called before we have credits
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rfcomm_send_internal returns undefined error codes???
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*/
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