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BTInquiryViewController.m
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BTInquiryViewController.m
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/*
* Copyright (C) 2009 by Matthias Ringwald
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD 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.
*
*/
//
// BTInquiryViewController.m
//
// Created by Matthias Ringwald on 10/8/09.
//
#import <BTstack/BTInquiryViewController.h>
#import <BTstack/BTDevice.h>
#include <btstack/btstack.h>
#include <dlfcn.h>
#define INQUIRY_INTERVAL 3
#define LASER_KB
// fix compare for 3.0
#ifndef __IPHONE_3_0
#define __IPHONE_3_0 30000
#endif
#if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_3_0
// SDK 30 defines missing in SDK 20
@interface UITableViewCell (NewIn30)
- (id)initWithStyle:(int)style reuseIdentifier:(NSString *)reuseIdentifier;
@end
#endif
static BTInquiryViewController *inqView;
static btstack_packet_handler_t clientHandler;
static uint8_t remoteNameIndex;
@interface BTInquiryViewController (private)
- (void) handlePacket:(uint8_t) packet_type channel:(uint16_t) channel packet:(uint8_t*) packet size:(uint16_t) size;
- (BTDevice *) getDeviceForAddress:(bd_addr_t *)addr;
- (void) getNextRemoteName;
- (void) startInquiry;
@end
static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
if (inqView) {
[inqView handlePacket:packet_type channel:channel packet:packet size:size];
}
}
@implementation BTInquiryViewController
@synthesize devices;
@synthesize deviceInfo;
@synthesize delegate;
@synthesize allowSelection;
@synthesize showIcons;
- (id) init {
self = [super initWithStyle:UITableViewStyleGrouped];
bluetoothState = HCI_STATE_OFF;
inquiryState = kInquiryInactive;
allowSelection = false;
showIcons = false;
remoteDevice = nil;
restartInquiry = true;
notifyDelegateOnInquiryStopped = false;
macAddressFont = [UIFont fontWithName:@"Courier New" size:[UIFont labelFontSize]];
deviceNameFont = [UIFont boldSystemFontOfSize:[UIFont labelFontSize]];
deviceActivity = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
[deviceActivity startAnimating];
bluetoothActivity = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
[bluetoothActivity startAnimating];
devices = [[NSMutableArray alloc] init];
inqView = self;
return self;
}
- (void) myStartInquiry{
if (inquiryState != kInquiryInactive) {
// NSLog(@"Inquiry already active");
return;
}
// NSLog(@"Inquiry started");
stopRemoteNameGathering = false;
restartInquiry = true;
inquiryState = kInquiryActive;
[[self tableView] reloadData];
bt_send_cmd(&hci_inquiry, HCI_INQUIRY_LAP, INQUIRY_INTERVAL, 0);
}
- (void) handlePacket:(uint8_t) packet_type channel:(uint16_t) channel packet:(uint8_t*) packet size:(uint16_t) size {
bd_addr_t event_addr;
switch (packet_type) {
case HCI_EVENT_PACKET:
switch (packet[0]){
case BTSTACK_EVENT_STATE:
// bt stack activated
bluetoothState = packet[2];
[[self tableView] reloadData];
// set BT state
if (bluetoothState == HCI_STATE_WORKING) {
[self myStartInquiry];
}
break;
case BTSTACK_EVENT_POWERON_FAILED:
bluetoothState = HCI_STATE_OFF;
[[self tableView] reloadData];
UIAlertView* alertView = [[UIAlertView alloc] init];
alertView.title = @"Bluetooth not accessible!";
alertView.message = @"Hardware initialization failed!\n"
"Make sure you have turned off Bluetooth in the System Settings.";
// NSLog(@"Alert: %@ - %@", alertView.title, alertView.message);
[alertView addButtonWithTitle:@"Dismiss"];
[alertView show];
break;
case HCI_EVENT_INQUIRY_RESULT:
case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI:
{
int numResponses = packet[2];
int i;
for (i=0; i<numResponses;i++){
bd_addr_t addr;
bt_flip_addr(addr, &packet[3+i*6]);
if ([inqView getDeviceForAddress:&addr]) {
// NSLog(@"Device %@ already in list", [BTDevice stringForAddress:&addr]);
continue;
}
BTDevice *dev = [[BTDevice alloc] init];
[dev setAddress:&addr];
[dev setPageScanRepetitionMode:packet[3 + numResponses*6 + i]];
switch (packet[0]) {
case HCI_EVENT_INQUIRY_RESULT:
[dev setClassOfDevice:READ_BT_24(packet, 3 + numResponses*(6+1+1+1) + i*3)];
[dev setClockOffset:( READ_BT_16(packet, 3 + numResponses*(6+1+1+1+3) + i*2) & 0x7fff)];
break;
case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI:
[dev setClassOfDevice:READ_BT_24(packet, 3 + numResponses*(6+1+1) + i*3)];
[dev setClockOffset:( READ_BT_16(packet, 3 + numResponses*(6+1+1+3) + i*2) & 0x7fff)];
break;
default:
break;
}
// hexdump(packet, size);
// get name from deviceInfo
if (deviceInfo) {
NSMutableDictionary * deviceDict = [deviceInfo objectForKey:[dev addressString]];
if (deviceDict){
dev.name = [deviceDict objectForKey:PREFS_REMOTE_NAME];
}
}
// NSLog(@"adding %@", [dev toString] );
[devices addObject:dev];
if (delegate) {
[delegate deviceDetected:self device:dev];
}
}
[[inqView tableView] reloadData];
break;
}
case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE:
bt_flip_addr(event_addr, &packet[3]);
BTDevice *dev = [inqView getDeviceForAddress:&event_addr];
if (!dev) break;
[dev setConnectionState:kBluetoothConnectionNotConnected];
if (packet[2] == 0) {
// assert max lengh
packet[9+255] = 0;
// Bluetooth specification mandates UTF-8 encoding...
NSString *remoteName = [NSString stringWithUTF8String:(const char *) &packet[9]];
// but fallback to latin-1 for non-standard products like old Microsoft Wireless Presenter
if (!remoteName){
remoteName = [NSString stringWithCString:(const char *) &packet[9]
encoding:NSISOLatin1StringEncoding];
}
[dev setName:remoteName];
if (deviceInfo) {
NSMutableDictionary *deviceDict = [deviceInfo objectForKey:[dev addressString]];
if (!deviceDict){
deviceDict = [NSMutableDictionary dictionaryWithCapacity:3];
[deviceInfo setObject:deviceDict forKey:[dev addressString]];
}
[deviceDict setObject:remoteName forKey:PREFS_REMOTE_NAME];
}
if (delegate) {
[delegate deviceDetected:self device:dev];
}
}
[[self tableView] reloadData];
remoteNameIndex++;
[self getNextRemoteName];
break;
case HCI_EVENT_LINK_KEY_NOTIFICATION:
if (deviceInfo) {
bt_flip_addr(event_addr, &packet[2]);
NSString *devAddress = [BTDevice stringForAddress:&event_addr];
NSData *linkKey = [NSData dataWithBytes:&packet[8] length:16];
NSMutableDictionary * deviceDict = [deviceInfo objectForKey:devAddress];
if (!deviceDict){
deviceDict = [NSMutableDictionary dictionaryWithCapacity:3];
[deviceInfo setObject:deviceDict forKey:devAddress];
}
[deviceDict setObject:linkKey forKey:PREFS_LINK_KEY];
// NSLog(@"Adding link key for %@, value %@", devAddress, linkKey);
}
break;
case HCI_EVENT_LINK_KEY_REQUEST: {
// link key request
NSData *linkKey = nil;
bt_flip_addr(event_addr, &packet[2]);
NSString *devAddress = nil;
// get link key from deviceInfo
if (deviceInfo) {
devAddress = [BTDevice stringForAddress:&event_addr];
NSMutableDictionary * deviceDict = [deviceInfo objectForKey:devAddress];
if (deviceDict){
linkKey = [deviceDict objectForKey:PREFS_LINK_KEY];
}
}
if (linkKey) {
// NSLog(@"Sending link key for %@, value %@", devAddress, linkKey);
bt_send_cmd(&hci_link_key_request_reply, &event_addr, [linkKey bytes]);
} else {
bt_send_cmd(&hci_link_key_request_negative_reply, &event_addr);
}
break;
}
case HCI_EVENT_COMMAND_COMPLETE:
if (COMMAND_COMPLETE_EVENT(packet, hci_inquiry_cancel)){
// inquiry canceled
// NSLog(@"Inquiry cancelled successfully");
inquiryState = kInquiryInactive;
[[self tableView] reloadData];
if (notifyDelegateOnInquiryStopped){
notifyDelegateOnInquiryStopped = false;
if (delegate) {
[delegate inquiryStopped];
}
}
}
if (COMMAND_COMPLETE_EVENT(packet, hci_remote_name_request_cancel)){
// inquiry canceled
// NSLog(@"Remote name request cancelled successfully");
inquiryState = kInquiryInactive;
[[self tableView] reloadData];
if (notifyDelegateOnInquiryStopped){
notifyDelegateOnInquiryStopped = false;
if (delegate) {
[delegate inquiryStopped];
}
}
}
break;
case HCI_EVENT_INQUIRY_COMPLETE:
// reset name check
remoteNameIndex = 0;
[self getNextRemoteName];
break;
default:
break;
}
break;
default:
break;
}
// forward to client app
(*clientHandler)(packet_type, channel, packet, size);
}
- (BTDevice *) getDeviceForAddress:(bd_addr_t *)addr {
uint8_t j;
for (j=0; j<[devices count]; j++){
BTDevice *dev = [devices objectAtIndex:j];
if (BD_ADDR_CMP(addr, [dev address]) == 0){
return dev;
}
}
return nil;
}
- (void) getNextRemoteName{
// stopped?
if (stopRemoteNameGathering) {
inquiryState = kInquiryInactive;
[[self tableView] reloadData];
if (notifyDelegateOnInquiryStopped){
notifyDelegateOnInquiryStopped = false;
if (delegate) {
[delegate inquiryStopped];
}
}
return;
}
remoteNameDevice = nil;
for ( ; remoteNameIndex < [devices count]; remoteNameIndex++){
BTDevice *dev = [devices objectAtIndex:remoteNameIndex];
if (![dev name]){
remoteNameDevice = dev;
break;
}
}
if (remoteNameDevice) {
inquiryState = kInquiryRemoteName;
[remoteNameDevice setConnectionState:kBluetoothConnectionRemoteName];
bt_send_cmd(&hci_remote_name_request, [remoteNameDevice address], [remoteNameDevice pageScanRepetitionMode], 0, [remoteNameDevice clockOffset] | 0x8000);
} else {
inquiryState = kInquiryInactive;
// inquiry done.
if (restartInquiry) {
[self myStartInquiry];
}
}
[[self tableView] reloadData];
}
- (void) startInquiry {
// put into loop
// @TODO: cannot be called a second time!
clientHandler = bt_register_packet_handler(packet_handler);
bluetoothState = HCI_STATE_INITIALIZING;
[[self tableView] reloadData];
stopRemoteNameGathering = false;
restartInquiry = true;
bt_send_cmd(&btstack_set_power_mode, HCI_POWER_ON );
}
- (void) stopInquiry {
// NSLog(@"stop inquiry called, state %u", inquiryState);
restartInquiry = false;
stopRemoteNameGathering = true;
bool immediateNotify = true;
switch (inquiryState) {
case kInquiryActive:
// just stop inquiry
immediateNotify = false;
bt_send_cmd(&hci_inquiry_cancel);
break;
case kInquiryInactive:
// NSLog(@"stop inquiry called although inquiry inactive?");
break;
case kInquiryRemoteName:
if (remoteNameDevice) {
// just stop remote name request
immediateNotify = false;
bt_send_cmd(&hci_remote_name_request_cancel, [remoteNameDevice address]);
}
break;
default:
break;
}
if (immediateNotify && delegate){
[delegate inquiryStopped];
} else {
notifyDelegateOnInquiryStopped = true;
}
}
- (void) showConnecting:(BTDevice *) device {
remoteDevice = device;
[[self tableView] reloadData];
}
- (void) showConnected:(BTDevice *) device {
connectedDevice = device;
[[self tableView] reloadData];
}
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
// return NO;
}
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
// unregister self
bt_register_packet_handler(clientHandler);
// done
[super dealloc];
}
// MARK: Table view methods
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
return @"Devices";
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
int rows = 1; // 1 for status line
if (bluetoothState == HCI_STATE_WORKING) {
rows += [devices count];
}
return rows;
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_3_0
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
#else
cell = [[[UITableViewCell alloc] initWithFrame:CGRectNull reuseIdentifier:(NSString *)CellIdentifier] autorelease];
#endif
}
// Set up the cell...
NSString *theLabel = nil;
UIImage *theImage = nil;
UIFont *theFont = nil;
int idx = [indexPath indexAtPosition:1];
if (bluetoothState != HCI_STATE_WORKING || idx >= [devices count]) {
if (bluetoothState == HCI_STATE_INITIALIZING){
theLabel = @"Activating BTstack...";
cell.accessoryView = bluetoothActivity;
} else if (bluetoothState == HCI_STATE_OFF){
theLabel = @"Bluetooth not accessible!";
cell.accessoryView = nil;
} else {
if (connectedDevice) {
theLabel = @"Disconnect";
cell.accessoryView = nil;
} else if (remoteDevice) {
theLabel = @"Connecting...";
cell.accessoryView = bluetoothActivity;
} else {
switch (inquiryState){
case kInquiryInactive:
if ([devices count] > 0){
theLabel = @"Find more devices...";
} else {
theLabel = @"Find devices...";
}
cell.accessoryView = nil;
break;
case kInquiryActive:
theLabel = @"Searching...";
cell.accessoryView = bluetoothActivity;
break;
case kInquiryRemoteName:
theLabel = @"Query device names...";
cell.accessoryView = bluetoothActivity;
break;
}
}
}
} else {
BTDevice *dev = [devices objectAtIndex:idx];
// pick font
theLabel = [dev nameOrAddress];
if ([dev name]){
theFont = deviceNameFont;
} else {
theFont = macAddressFont;
}
// pick an icon for the devices
if (showIcons) {
NSString *imageName = @"bluetooth.png";
// check major device class
switch (([dev classOfDevice] & 0x1f00) >> 8) {
case 0x01:
imageName = @"computer.png";
break;
case 0x02:
imageName = @"smartphone.png";
break;
case 0x05:
switch ([dev classOfDevice] & 0xff){
case 0x40:
imageName = @"keyboard.png";
break;
case 0x80:
imageName = @"mouse.png";
break;
case 0xc0:
imageName = @"keyboard.png";
break;
default:
imageName = @"HID.png";
break;
}
}
#ifdef LASER_KB
if ([dev name] && [[dev name] isEqualToString:@"CL800BT"]){
imageName = @"keyboard.png";
}
if ([dev name] && [[dev name] isEqualToString:@"CL850"]){
imageName = @"keyboard.png";
}
// Celluon CL800BT, CL850 have 00-0b-24-aa-bb-cc, COD 0x400210
uint8_t *addr = (uint8_t *) [dev address];
if (addr[0] == 0x00 && addr[1] == 0x0b && addr[2] == 0x24){
imageName = @"keyboard.png";
}
#endif
theImage = [UIImage imageNamed:imageName];
}
// set accessory view
switch ([dev connectionState]) {
case kBluetoothConnectionNotConnected:
case kBluetoothConnectionConnected:
cell.accessoryView = nil;
break;
case kBluetoothConnectionConnecting:
case kBluetoothConnectionRemoteName:
cell.accessoryView = deviceActivity;
break;
}
}
#if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_3_0
if (theLabel) cell.textLabel.text = theLabel;
if (theFont) cell.textLabel.font = theFont;
if (theImage) cell.imageView.image = theImage;
#else
if (theLabel) cell.text = theLabel;
if (theFont) cell.font = theFont;
if (theImage) cell.image = theImage;
#endif
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// NSLog(@"didSelectRowAtIndexPath %@", indexPath);
// pro-actively deselect row
[tableView deselectRowAtIndexPath:indexPath animated:NO];
// Navigation logic may go here. Create and push another view controller.
// AnotherViewController *anotherViewController = [[AnotherViewController alloc] initWithNibName:@"AnotherView" bundle:nil];
// [self.navigationController pushViewController:anotherViewController];
// [anotherViewController release];
// valid selection?
int idx = [indexPath indexAtPosition:1];
if (bluetoothState == HCI_STATE_WORKING) {
if (delegate) {
if (idx < [devices count]){
[delegate deviceChoosen:self device:[devices objectAtIndex:idx]];
} else if (idx == [devices count]) {
if (connectedDevice) {
// DISCONNECT button
[delegate disconnectDevice:self device:connectedDevice];
} else {
// Find more devices
[self myStartInquiry];
}
}
}
} else {
[tableView deselectRowAtIndexPath:indexPath animated:TRUE];
}
}
- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (allowSelection) {
return indexPath;
}
return nil;
}
@end