LETransceiver.m
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//
// LETransceiver.m
// ActsBluetoothSpeed
//
// Created by inidhu on 2019/3/15.
// Copyright © 2019 Actions. All rights reserved.
//
#import "LETransceiver.h"
#import <UIKit/UIKit.h>
#define BLE_UUID_SERVICE @"e49a25f8-f69a-11e8-8eb2-f2801f1b9fd1"
#define BLE_UUID_SERVICE_WRITE @"e49a25e0-f69a-11e8-8eb2-f2801f1b9fd1"
#define BLE_UUID_SERVICE_READ @"e49a28e1-f69a-11e8-8eb2-f2801f1b9fd1"
@implementation LETransceiver {
NSString *writeServiceUUID;
NSString *writeCharacteristicUUID;
NSString *indicateServiceUUID;
NSString *indicateCharacteristicUUID;
// CBCharacteristicWriteType writeType;
CBPeripheral *connectedPeripheral;
CBCharacteristic *characteristicWrite;
CBCharacteristic *characteristicIndicate;
NSTimer *connectTimer;
BOOL isReadyToSendWrite;
}
- (void)closeOTA {
[connectedPeripheral setNotifyValue:NO forCharacteristic:characteristicIndicate];
}
- (id) init {
self = [super init];
if (self) {
NSDictionary *uuids = [NSDictionary dictionaryWithObjectsAndKeys:BLE_UUID_SERVICE, KeyWriteServiceUUID, BLE_UUID_SERVICE_WRITE, KeyWriteCharacteristicUUID, BLE_UUID_SERVICE, KeyIndicateServiceUUID, BLE_UUID_SERVICE_READ, KeyIndicateCharacteristicUUID, nil];
[self setUUIDs:uuids];
}
// writeType = CBCharacteristicWriteWithoutResponse;
// centralManager = [[CBCentralManager alloc] initWithDelegate:self queue:nil];
return self;
}
- (void)setUUIDs:(NSDictionary *) uuids {
NSArray *keys = [uuids allKeys];
for (NSString *key in keys) {
if ([key isEqualToString:KeyWriteServiceUUID]) {
writeServiceUUID = [[uuids objectForKey:KeyWriteServiceUUID] uppercaseString];
} else if ([key isEqualToString:KeyIndicateServiceUUID]) {
indicateServiceUUID = [[uuids objectForKey:KeyIndicateServiceUUID] uppercaseString];
} else if ([key isEqualToString:KeyWriteCharacteristicUUID]) {
writeCharacteristicUUID = [[uuids objectForKey:KeyWriteCharacteristicUUID] uppercaseString];
} else if ([key isEqualToString:KeyIndicateCharacteristicUUID]) {
indicateCharacteristicUUID = [[uuids objectForKey:KeyIndicateCharacteristicUUID] uppercaseString];
}
}
}
//- (void)scanStart {
// NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithBool:NO], CBCentralManagerScanOptionAllowDuplicatesKey, nil];
// /*
// NSMutableArray *servicesUUID = [[NSMutableArray alloc] init];
// if (writeServiceUUID)
// [servicesUUID addObject:writeServiceUUID];
// if (indicateServiceUUID)
// [servicesUUID addObject:indicateServiceUUID];
// */
// [self.centralManager scanForPeripheralsWithServices:nil options:options];
//}
//- (void)scanStop {
// [self.centralManager stopScan];
//}
//- (void)connect:(CBPeripheral *)peripheral {
// [self scanStop];
//
// [self.centralManager connectPeripheral:peripheral options:@{CBConnectPeripheralOptionNotifyOnConnectionKey:@YES}];
//
// if (connectTimer) {
// [connectTimer invalidate];
// }
// connectTimer = [NSTimer scheduledTimerWithTimeInterval:20.0 target:self selector:@selector(connectTimeout:) userInfo:peripheral repeats:NO];
//}
//- (void)disconnect:(CBPeripheral *)peripheral {
// if (![self isPeripheralConnected:peripheral]) {
// return;
// }
//
// NSLog(@"disconnect %@", peripheral.name);
// [self.centralManager cancelPeripheralConnection:peripheral];
//}
//- (BOOL) isPeripheralConnected:(CBPeripheral *) peripheral {
// if (peripheral.state == CBPeripheralStateConnected) {
// return YES;
// }
// return NO;
//}
- (NSUInteger) getMtuForType:(CBCharacteristicWriteType) type {
return [connectedPeripheral maximumWriteValueLengthForType:type];
}
- (void)write:(NSData *) data {
if (characteristicWrite) {
NSUInteger mtu = [self getMtuForType:CBCharacteristicWriteWithoutResponse];
NSLog(@"writeData mtu: %ld, %@", mtu, data);
for (NSUInteger index = 0; index < data.length; index += mtu) {
NSUInteger len = (data.length - index) > mtu ? mtu : (data.length - index);
NSData *value = [data subdataWithRange:NSMakeRange(index, len)];
[connectedPeripheral writeValue:value forCharacteristic:characteristicWrite type:CBCharacteristicWriteWithoutResponse];
NSLog(@"writeValue: %@", value);
}
}
}
- (void)write:(NSData *) data index:(int) i {
if (characteristicWrite) {
NSUInteger mtu = [self getMtuForType:CBCharacteristicWriteWithoutResponse];
NSLog(@"i writeData mtu: %ld, %@", mtu, data);
for (NSUInteger index = 0; index < data.length; index += mtu) {
NSUInteger len = (data.length - index) > mtu ? mtu : (data.length - index);
NSData *value = [data subdataWithRange:NSMakeRange(index, len)];
if(i != 0 && i % 62 == 0) {
NSData *value2 = [value subdataWithRange:NSMakeRange(0, 1)];
NSData *value3 = [value subdataWithRange:NSMakeRange(1, value.length - 1)];
[connectedPeripheral writeValue:value2 forCharacteristic:characteristicWrite type:CBCharacteristicWriteWithResponse];
[connectedPeripheral writeValue:value3 forCharacteristic:characteristicWrite type:CBCharacteristicWriteWithoutResponse];
} else {
[connectedPeripheral writeValue:value forCharacteristic:characteristicWrite type:CBCharacteristicWriteWithoutResponse];
}
NSLog(@"writeValue: %@", value);
}
}
}
//- (void)connectTimeout:(NSTimer *)timer {
// CBPeripheral *peripheral = (CBPeripheral *)[timer userInfo];
// [self disconnect:peripheral];
//}
//#pragma mark -- CBCentralManagerDelegate
//- (void)centralManagerDidUpdateState:(CBCentralManager *)central {
// NSString *messtoshow;
// switch (central.state) {
// case CBManagerStatePoweredOn:{
// messtoshow=[NSString stringWithFormat:@"CBCentralManagerStatePoweredOn"];
// [self scanStart];
// break;
// }
// case CBManagerStateUnknown:
// {
// messtoshow=[NSString stringWithFormat:@"State unknown, update imminent"];
// break;
// }
// case CBManagerStateResetting:
// {
// messtoshow=[NSString stringWithFormat:@"The connection with the system service was momentarily lost, update imminent."];
// break;
// }
// case CBManagerStateUnsupported:
// {
// messtoshow=[NSString stringWithFormat:@"The platform doesn't support Bluetooth Low Energy"];
// break;
// }
// case CBManagerStateUnauthorized:
// {
// messtoshow=[NSString stringWithFormat:@"The app is not authorized to use Bluetooth Low Energy"];
// break;
// }
// case CBManagerStatePoweredOff:
// {
// [self disconnect:connectedPeripheral];
//
// messtoshow=[NSString stringWithFormat:@"Bluetooth is currently powered off"];
// break;
// }
// default:
// break;
// }
// NSLog(@"%@",messtoshow);
//}
//- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI{
//// NSLog(@"didDiscoverPeripheral: %@", peripheral);
//
// if(_connectionDelegate && [_connectionDelegate respondsToSelector:@selector(onFoundPeripheral:advertisementData:)]) {
// [_connectionDelegate onFoundPeripheral:peripheral advertisementData:advertisementData];
// }
//}
//- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral{
// NSLog(@"didConnectPeripheral: %@", peripheral.name);
//
// peripheral.delegate = self;
// [peripheral discoverServices:nil];
//}
//- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error{
// NSLog(@"Fail to connect: %@", peripheral.name);
//}
//- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error{
// NSLog(@"didDisconnectPeripheral %@, error: %@",peripheral, error);
//
// connectedPeripheral = nil;
// characteristicWrite = nil;
// characteristicIndicate = nil;
// if(_connectionDelegate && [_connectionDelegate respondsToSelector:@selector(onDisconnectedPeripheral:)]) {
// [_connectionDelegate onDisconnectedPeripheral:peripheral];
// }
//}
//#pragma mark -- CBPeripheralDelegate
//- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error{
// NSLog(@"didDiscoverServices: %@", peripheral.name);
// if (error) {
// NSLog(@"Error discovering service:%@", [error localizedDescription]);
// return;
// }
//
// for (CBService *service in peripheral.services) {
//
// NSLog(@"service: %@", service);
// [peripheral discoverCharacteristics:nil forService:service];
// }
//
//}
- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{
NSLog(@"didDiscoverCharacteristicsForService: %@, %@", peripheral.name, service.UUID.UUIDString);
if (error) {
NSLog(@"Error didDiscoverCharacteristicsForService:%@",[error localizedDescription]);
return;
}
NSLog(@"UUID: %@, %@, %@", service.UUID.UUIDString, writeServiceUUID, indicateServiceUUID);
if ([writeServiceUUID containsString:service.UUID.UUIDString]) {
for (CBCharacteristic *characteristic in service.characteristics) {
NSLog(@"DiscoverCharacteristics: %@", characteristic.UUID);
if ([characteristic.UUID.UUIDString isEqualToString:writeCharacteristicUUID])
characteristicWrite = characteristic;
}
}
if ([indicateServiceUUID containsString:service.UUID.UUIDString]) {
for (CBCharacteristic *characteristic in service.characteristics) {
NSLog(@"DiscoverCharacteristics: %@", characteristic.UUID);
if ([characteristic.UUID.UUIDString isEqualToString:indicateCharacteristicUUID]) {
[peripheral setNotifyValue:YES forCharacteristic:characteristic];
characteristicIndicate = characteristic;
}
}
}
if (characteristicWrite && characteristicIndicate) {
connectedPeripheral = peripheral;
[connectTimer invalidate];
if(_connectionDelegate && [_connectionDelegate respondsToSelector:@selector(onConnectedPeripheral:)]) {
[_connectionDelegate onConnectedPeripheral:peripheral];
}
}
}
//- (void)peripheral:(CBPeripheral *)peripheral didReadRSSI:(NSNumber *)RSSI error:(nullable NSError *)error {
//
//}
//- (void)peripheral:(CBPeripheral *)peripheral didWriteValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {
//
// if (error) {
// NSLog(@"%@,%@,Error didWriteValueForCharacteristic:%@",characteristic.UUID,[characteristic value], [error localizedDescription]);
// return;
// }
//
//}
//- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {
// if (error) {
// NSLog(@"Error didUpdateValueForCharacteristic:%@", [error localizedDescription]);
// return;
// }
// NSLog(@"didUpdateValueForCharacteristic: %@ %@", characteristic.UUID, characteristic.value);
//
// if (_dataDelegate && [_dataDelegate respondsToSelector:@selector(onDataReceive:)]) {
// [_dataDelegate onDataReceive:[characteristic value]];
// }
//}
@end