ios蓝牙开发教程
1、建立中心角色
#import <CoreBluetooth/CoreBluetooth.h>
CBCentralManager *manager;
manager = [[CBCentralManager alloc] initWithDelegate:self queue:nil];
2、扫描外设（discover）
[manager scanForPeripheralsWithServices:nil options:options];
3、连接外设(connect)
(void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
if([peripheral.name isEqualToString:BLE_SERVICE_NAME]){
[self connect:peripheral];
}
s);
}
(BOOL)connect:(CBPeripheral *)peripheral{
self.manager.delegate = self;
[self.manager connectPeripheral:peripheral
options:[NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES] forKey:CBConnectPeripheralOptionNotifyOnDisconnectionKey]];
}
4、扫描外设中的服务和特征(discover)
(void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
NSLog(@"Did connect to peripheral: %@", peripheral);
_testPeripheral = peripheral;
[peripheral setDelegate:self]; <br>//查找服务
[peripheral discoverServices:nil];
}
(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error
{
NSLog(@"didDiscoverServices");
if (error)
{
NSLog(@"Discovered services for %@ with error: %@", peripheral.name, [error localizedDescription]);
if ([self.delegate respondsToSelector:@selector(DidNotifyFailConnectService:withPeripheral:error:)])
[self.delegate DidNotifyFailConnectService:nil withPeripheral:nil error:nil];
return;
}
for (CBService *service in peripheral.services)
{
//发现服务
if ([service.UUID isEqual:[CBUUID UUIDWithString:UUIDSTR_ISSC_PROPRIETARY_SERVICE]])
{
NSLog(@"Service found with UUID: %@", service.UUID); <br>//查找特征
[peripheral discoverCharacteristics:nil forService:service];
break;
}
}
}
(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
{
if (error)
{
NSLog(@"Discovered characteristics for %@ with error: %@", service.UUID, [error localizedDescription]);
[self error];
return;
}
NSLog(@"服务：%@",service.UUID);
for (CBCharacteristic *characteristic in service.characteristics)
{
//发现特征
if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"xxxxxxx"]]) {
NSLog(@"监听：%@",characteristic);<br>//监听特征
[self.peripheral setNotifyValue:YES forCharacteristic:characteristic];
}
}
}
5、与外设做数据交互(读 与 写)
读
(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
if (error)
{
NSLog(@"Error updating value for characteristic %@ error: %@", characteristic.UUID, [error localizedDescription]);
self.error_b = BluetoothError_System;
[self error];
return;
}
// NSLog(@"收到的数据：%@",characteristic.value);
[self decodeData:characteristic.value];
}
写
NSData *d2 = [[PBABluetoothDecode sharedManager] HexStringToNSData:@"0x02"];
[self.peripheral writeValue:d2 forCharacteristic:characteristic type:CBCharacteristicWriteWithoutResponse];