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btstack/example/ant_test.c

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/*
* 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
*
*/
// *****************************************************************************
// ANT + SPP Counter demo for TI CC2567
// - it provides a SPP port and and sends a counter every second
// - it also listens on ANT channel 33,1,1
// *****************************************************************************
#include <stdio.h>
#include "btstack_chipset_cc256x.h"
#include "btstack.h"
#include "ant_cmd.h"
#define RFCOMM_SERVER_CHANNEL 1
#define HEARTBEAT_PERIOD_MS 1000
static uint8_t rfcomm_channel_nr = 1;
static uint16_t rfcomm_channel_id = 0;
static uint8_t spp_service_buffer[100];
static btstack_timer_source_t heartbeat;
static btstack_packet_callback_registration_t hci_event_callback_registration;
// ant logic
static enum {
ANT_IDLE,
ANT_SEND_RESET,
ANT_W4_RESET_COMPLETE,
ANT_SEND_ASSIGN_CHANNEL,
ANT_W4_ASSIGN_CHANNEL_COMPLETE,
ANT_SEND_SET_CHANNEL_ID,
ANT_W4_SET_CHANNEL_ID_COMPLETE,
ANT_SEND_CHANNEL_OPEN,
ANT_W4_CHANNEL_OPEN_COMPLETE,
ANT_ACTIVE
} ant_state = ANT_IDLE;
static void ant_run(void){
// check if ANT/HCI command can be sent
if (!hci_can_send_command_packet_now()) return;
// send next command
switch(ant_state){
case ANT_SEND_RESET:
ant_state = ANT_W4_RESET_COMPLETE;
// 1. reset
printf("Send ANT Reset\n");
ant_send_cmd(&ant_reset);
break;
case ANT_SEND_ASSIGN_CHANNEL:
ant_state = ANT_W4_ASSIGN_CHANNEL_COMPLETE;
// 2. assign channel
printf("Send Assign Channel\n");
ant_send_cmd(&ant_assign_channel, 0, 0x00, 0);
break;
case ANT_SEND_SET_CHANNEL_ID:
ant_state = ANT_W4_SET_CHANNEL_ID_COMPLETE;
// 3. set channel ID
printf("Send Set Channel ID\n");
ant_send_cmd(&ant_channel_id, 0, 33, 1, 1);
break;
case ANT_SEND_CHANNEL_OPEN:
ant_state = ANT_W4_CHANNEL_OPEN_COMPLETE;
// 4. open channel
printf("Send Channel Open\n");
ant_send_cmd(&ant_open_channel, 0);
break;
default:
break;
}
}
// Bluetooth logic
static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
bd_addr_t event_addr;
uint8_t rfcomm_channel_nr;
uint16_t mtu;
uint8_t event_code;
// uint8_t channel;
uint8_t message_id;
switch (packet_type) {
case HCI_EVENT_PACKET:
switch (hci_event_packet_get_type(packet)) {
case BTSTACK_EVENT_STATE:
if (btstack_event_state_get_state(packet) == HCI_STATE_WORKING){
printf("BTstack is up and running\n");
// start ANT init
ant_state = ANT_SEND_RESET;
}
break;
case HCI_EVENT_PIN_CODE_REQUEST:
// inform about pin code request
printf("Pin code request - using '0000'\n\r");
reverse_bd_addr(&packet[2], event_addr);
hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000");
break;
case RFCOMM_EVENT_INCOMING_CONNECTION:
// data: event (8), len(8), address(48), channel (8), rfcomm_cid (16)
rfcomm_event_incoming_connection_get_bd_addr(packet, event_addr);
rfcomm_channel_nr = rfcomm_event_incoming_connection_get_server_channel(packet);
rfcomm_channel_id = rfcomm_event_incoming_connection_get_rfcomm_cid(packet);
printf("RFCOMM channel %u requested for %s\n", rfcomm_channel_nr, bd_addr_to_str(event_addr));
rfcomm_accept_connection(rfcomm_channel_id);
break;
case RFCOMM_EVENT_CHANNEL_OPENED:
// data: event(8), len(8), status (8), address (48), server channel(8), rfcomm_cid(16), max frame size(16)
if (rfcomm_event_channel_opened_get_status(packet)) {
printf("RFCOMM channel open failed, status %u\n", rfcomm_event_channel_opened_get_status(packet));
} else {
rfcomm_channel_id = rfcomm_event_channel_opened_get_rfcomm_cid(packet);
mtu = rfcomm_event_channel_opened_get_max_frame_size(packet);
printf("RFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n", rfcomm_channel_id, mtu);
}
break;
case RFCOMM_EVENT_CHANNEL_CLOSED:
rfcomm_channel_id = 0;
break;
case 0xff: // vendor specific -> ANT
// vendor specific ant message
if (packet[2] != 0x00) break;
if (packet[3] != 0x05) break;
event_code = packet[7];
printf("ANT Event: ");
printf_hexdump(packet, size);
switch(event_code){
case MESG_STARTUP_MESG_ID:
ant_state = ANT_SEND_ASSIGN_CHANNEL;
break;
case MESG_RESPONSE_EVENT_ID:
// channel = packet[8];
message_id = packet[9];
switch (message_id){
case MESG_ASSIGN_CHANNEL_ID:
ant_state = ANT_SEND_SET_CHANNEL_ID;
break;
case MESG_CHANNEL_ID_ID:
ant_state = ANT_SEND_CHANNEL_OPEN;
break;
default:
break;
}
break;
default:
break;
}
break;
default:
break;
}
break;
default:
break;
}
ant_run();
}
static void heartbeat_handler(struct btstack_timer_source *ts){
if (rfcomm_channel_id){
static int counter = 0;
char lineBuffer[30];
sprintf(lineBuffer, "BTstack counter %04u\n\r", ++counter);
puts(lineBuffer);
if (rfcomm_can_send_packet_now(rfcomm_channel_id)){
int err = rfcomm_send(rfcomm_channel_id, (uint8_t*) lineBuffer, strlen(lineBuffer));
if (err) {
printf("rfcomm_send -> error %d", err);
}
}
}
btstack_run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS);
btstack_run_loop_add_timer(ts);
}
int btstack_main(int argc, const char * argv[]);
int btstack_main(int argc, const char * argv[]){
// init L2CAP
l2cap_init();
// init RFCOMM
rfcomm_init();
rfcomm_register_service(packet_handler, rfcomm_channel_nr, 100); // reserved channel, mtu=100
// init SDP, create record for SPP and register with SDP
sdp_init();
memset(spp_service_buffer, 0, sizeof(spp_service_buffer));
spp_create_sdp_record(spp_service_buffer, 0x10001, RFCOMM_SERVER_CHANNEL, "SPP Counter");
sdp_register_service(spp_service_buffer);
// register for HCI events
hci_event_callback_registration.callback = &packet_handler;
hci_add_event_handler(&hci_event_callback_registration);
// set local name
gap_set_local_name("ANT Demo");
// make discoverable
gap_discoverable_control(1);
// set one-shot timer
heartbeat.process = &heartbeat_handler;
btstack_run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS);
btstack_run_loop_add_timer(&heartbeat);
printf("Run...\n\r");
// turn on!
hci_power_control(HCI_POWER_ON);
return 0;
}
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