mirror of
https://github.com/bluekitchen/btstack.git
synced 2025-01-06 07:00:59 +00:00
229 lines
7.9 KiB
C
229 lines
7.9 KiB
C
/*
|
|
* 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 HCI code
|
|
//
|
|
// *****************************************************************************
|
|
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "btstack.h"
|
|
|
|
#define MAX_DEVICES 10
|
|
enum DEVICE_STATE { BONDING_REQUEST, BONDING_REQUESTED, BONDING_COMPLETED };
|
|
|
|
struct device {
|
|
bd_addr_t address;
|
|
uint16_t clockOffset;
|
|
uint32_t classOfDevice;
|
|
uint8_t pageScanRepetitionMode;
|
|
uint8_t rssi;
|
|
enum DEVICE_STATE state;
|
|
};
|
|
|
|
#define INQUIRY_INTERVAL 5
|
|
struct device devices[MAX_DEVICES];
|
|
int deviceCount = 0;
|
|
|
|
|
|
enum STATE {INIT, W4_INQUIRY_MODE_COMPLETE, ACTIVE} ;
|
|
enum STATE state = INIT;
|
|
|
|
static btstack_packet_callback_registration_t hci_event_callback_registration;
|
|
|
|
static int getDeviceIndexForAddress( bd_addr_t addr){
|
|
int j;
|
|
for (j=0; j< deviceCount; j++){
|
|
if (bd_addr_cmp(addr, devices[j].address) == 0){
|
|
return j;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static void start_scan(void){
|
|
printf("Starting inquiry scan..\n");
|
|
hci_send_cmd(&hci_inquiry, HCI_INQUIRY_LAP, INQUIRY_INTERVAL, 0);
|
|
}
|
|
|
|
static int has_more_bonding_requests(void){
|
|
int i;
|
|
for (i=0;i<deviceCount;i++) {
|
|
if (devices[i].state == BONDING_REQUEST) return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void do_next_bonding_request(void){
|
|
int i;
|
|
for (i=0;i<deviceCount;i++) {
|
|
// remote name request
|
|
if (devices[i].state == BONDING_REQUEST){
|
|
devices[i].state = BONDING_REQUESTED;
|
|
printf("Dedicated bonding with %s...\n", bd_addr_to_str(devices[i].address));
|
|
|
|
//
|
|
gap_dedicated_bonding(devices[i].address, 0); // no MITM protection
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void continue_bonding(void){
|
|
if (has_more_bonding_requests()){
|
|
do_next_bonding_request();
|
|
return;
|
|
}
|
|
start_scan();
|
|
}
|
|
|
|
static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
|
|
bd_addr_t addr;
|
|
int i;
|
|
int numResponses;
|
|
|
|
if (packet_type != HCI_EVENT_PACKET) return;
|
|
|
|
uint8_t event = hci_event_packet_get_type(packet);
|
|
|
|
switch(state){
|
|
|
|
case INIT:
|
|
switch(event){
|
|
case BTSTACK_EVENT_STATE:
|
|
if (packet[2] == HCI_STATE_WORKING){
|
|
hci_send_cmd(&hci_write_inquiry_mode, 0x01); // with RSSI
|
|
state = W4_INQUIRY_MODE_COMPLETE;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case W4_INQUIRY_MODE_COMPLETE:
|
|
if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_write_inquiry_mode)) {
|
|
start_scan();
|
|
state = ACTIVE;
|
|
}
|
|
break;
|
|
|
|
case ACTIVE:
|
|
switch(event){
|
|
case HCI_EVENT_INQUIRY_RESULT:
|
|
case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI:{
|
|
numResponses = packet[2];
|
|
int offset = 3;
|
|
for (i=0; i<numResponses && deviceCount < MAX_DEVICES;i++){
|
|
reverse_bd_addr(&packet[offset], addr);
|
|
offset += 6;
|
|
int index = getDeviceIndexForAddress(addr);
|
|
if (index >= 0) continue; // already in our list
|
|
memcpy(devices[deviceCount].address, addr, 6);
|
|
|
|
devices[deviceCount].pageScanRepetitionMode = packet[offset];
|
|
offset += 1;
|
|
|
|
if (event == HCI_EVENT_INQUIRY_RESULT){
|
|
offset += 2; // Reserved + Reserved
|
|
devices[deviceCount].classOfDevice = little_endian_read_24(packet, offset);
|
|
offset += 3;
|
|
devices[deviceCount].clockOffset = little_endian_read_16(packet, offset) & 0x7fff;
|
|
offset += 2;
|
|
devices[deviceCount].rssi = 0;
|
|
} else {
|
|
offset += 1; // Reserved
|
|
devices[deviceCount].classOfDevice = little_endian_read_24(packet, offset);
|
|
offset += 3;
|
|
devices[deviceCount].clockOffset = little_endian_read_16(packet, offset) & 0x7fff;
|
|
offset += 2;
|
|
devices[deviceCount].rssi = packet[offset];
|
|
offset += 1;
|
|
}
|
|
devices[deviceCount].state = BONDING_REQUEST;
|
|
printf("Device found: %s with COD: 0x%06x, pageScan %d, clock offset 0x%04x, rssi 0x%02x\n", bd_addr_to_str(addr),
|
|
devices[deviceCount].classOfDevice, devices[deviceCount].pageScanRepetitionMode,
|
|
devices[deviceCount].clockOffset, devices[deviceCount].rssi);
|
|
deviceCount++;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case HCI_EVENT_INQUIRY_COMPLETE:
|
|
continue_bonding();
|
|
break;
|
|
|
|
case GAP_EVENT_DEDICATED_BONDING_COMPLETED:
|
|
// data: event(8), len(8), status (8), bd_addr(48)
|
|
printf("GAP Dedicated Bonding Complete, status %u\n", packet[2]);
|
|
reverse_bd_addr(&packet[3], addr);
|
|
int index = getDeviceIndexForAddress(addr);
|
|
if (index >= 0) {
|
|
devices[index].state = BONDING_COMPLETED;
|
|
}
|
|
continue_bonding();
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// main == setup
|
|
int btstack_main(int argc, const char * argv[]);
|
|
int btstack_main(int argc, const char * argv[]) {
|
|
|
|
hci_event_callback_registration.callback = &packet_handler;
|
|
hci_add_event_handler(&hci_event_callback_registration);
|
|
|
|
// turn on!
|
|
hci_power_control(HCI_POWER_ON);
|
|
|
|
return 0;
|
|
}
|
|
|