/*
* Copyright (C) 2014 BlueKitchen GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. Any redistribution, use, or modification is done solely for
* personal benefit and not for any commercial purpose or for
* monetary gain.
*
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Please inquire about commercial licensing options at
* contact@bluekitchen-gmbh.com
*
*/
// *****************************************************************************
//
// minimal setup for SDP client over USB or UART
//
// *****************************************************************************
#include "btstack-config.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <btstack/hci_cmds.h>
#include <btstack/run_loop.h>
#include "hci.h"
#include "btstack_memory.h"
#include "hci_dump.h"
#include "l2cap.h"
#include "sdp_query_rfcomm.h"
#include "rfcomm.h"
#define NUM_ROWS 25
#define NUM_COLS 40
typedef enum {
W4_SDP_RESULT,
W4_SDP_COMPLETE,
W4_RFCOMM_CHANNEL,
DONE
} state_t;
#define DATA_VOLUME (1000 * 1000)
// configuration area {
static bd_addr_t remote = {0x84, 0x38, 0x35, 0x65, 0xD1, 0x15}; // address of remote device
static const char * spp_service_name_prefix = "Bluetooth-Incoming"; // default on OS X
// configuration area }
static uint8_t test_data[NUM_ROWS * NUM_COLS];
static uint16_t test_data_len = sizeof(test_data);
static uint8_t channel_nr = 0;
static uint16_t mtu;
static uint16_t rfcomm_cid = 0;
static uint32_t data_to_send = DATA_VOLUME;
static state_t state = W4_SDP_RESULT;
static void create_test_data(void){
int x,y;
for (y=0;y<NUM_ROWS;y++){
for (x=0;x<NUM_COLS-2;x++){
test_data[y*NUM_COLS+x] = '0' + (x % 10);
}
test_data[y*NUM_COLS+NUM_COLS-2] = '\n';
test_data[y*NUM_COLS+NUM_COLS-1] = '\r';
}
}
static void send_packet(void){
int err = rfcomm_send_internal(rfcomm_cid, (uint8_t*) test_data, test_data_len);
if (err){
printf("rfcomm_send_internal -> error 0X%02x", err);
return;
}
if (data_to_send < test_data_len){
rfcomm_disconnect_internal(rfcomm_cid);
rfcomm_cid = 0;
state = DONE;
printf("SPP Streamer: enough data send, closing DLC\n");
return;
}
data_to_send -= test_data_len;
}
static void packet_handler (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
// printf("packet_handler type %u, packet[0] %x\n", packet_type, packet[0]);
if (packet_type != HCI_EVENT_PACKET) return;
uint8_t event = packet[0];
switch (event) {
case BTSTACK_EVENT_STATE:
// bt stack activated, get started
if (packet[2] == HCI_STATE_WORKING){
sdp_query_rfcomm_channel_and_name_for_uuid(remote, SDP_PublicBrowseGroup);
}
break;
case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE:
// data: event(8), len(8), status (8), address (48), handle(16), server channel(8), rfcomm_cid(16), max frame size(16)
if (packet[2]) {
printf("RFCOMM channel open failed, status %u\n", packet[2]);
} else {
// data: event(8), len(8), status (8), address (48), handle (16), server channel(8), rfcomm_cid(16), max frame size(16)
rfcomm_cid = READ_BT_16(packet, 12);
mtu = READ_BT_16(packet, 14);
printf("RFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n", rfcomm_cid, mtu);
if ((test_data_len > mtu)) {
test_data_len = mtu;
}
if (rfcomm_can_send_packet_now(rfcomm_cid)) send_packet();
break;
}
break;
case DAEMON_EVENT_HCI_PACKET_SENT:
case RFCOMM_EVENT_CREDITS:
if (rfcomm_can_send_packet_now(rfcomm_cid)) send_packet();
break;
default:
break;
}
}
void handle_found_service(char * name, uint8_t port){
printf("APP: Service name: '%s', RFCOMM port %u\n", name, port);
if (strncmp(name, spp_service_name_prefix, strlen(spp_service_name_prefix)) != 0) return;
printf("APP: matches requested SPP Service Name\n");
channel_nr = port;
state = W4_SDP_COMPLETE;
}
void handle_query_rfcomm_event(sdp_query_event_t * event, void * context){
sdp_query_rfcomm_service_event_t * ve;
switch (event->type){
case SDP_QUERY_RFCOMM_SERVICE:
ve = (sdp_query_rfcomm_service_event_t*) event;
handle_found_service((char*) ve->service_name, ve->channel_nr);
break;
case SDP_QUERY_COMPLETE:
if (state != W4_SDP_COMPLETE){
printf("Requested SPP Service %s not found \n", spp_service_name_prefix);
break;
}
// connect
printf("Requested SPP Service found, creating RFCOMM channel\n");
state = W4_RFCOMM_CHANNEL;
rfcomm_create_channel_internal(NULL, remote, channel_nr);
break;
default:
break;
}
}
int btstack_main(int argc, const char * argv[]);
int btstack_main(int argc, const char * argv[]){
create_test_data();
printf("Client HCI init done\r\n");
// init L2CAP
l2cap_init();
l2cap_register_packet_handler(packet_handler);
rfcomm_register_packet_handler(packet_handler);
sdp_query_rfcomm_register_callback(handle_query_rfcomm_event, NULL);
// turn on!
hci_power_control(HCI_POWER_ON);
return 0;
}