Apple

A example at here is CBCharacteristicPropertyWriteWithoutResponse while sending the value is 4 but after it was received on other device, it changed to 132. It seems most of CBCharacteristicProperties except CBCharacteristicPropertyNotify happened like this. And all the codes related with those properties doesn't work anymore...

- (void)peripheralManagerDidUpdateState:(CBPeripheralManager *)peripheral{

NSLog(@"Done");

CBUUID *cUDID = [CBUUID UUIDWithString:@"DA18"];

CBUUID *cUDID1 = [CBUUID UUIDWithString:@"DA17"];

CBUUID *sUDID = [CBUUID UUIDWithString:@"0A12"];

characteristic = [[CBMutableCharacteristic alloc]initWithType:cUDID properties:CBCharacteristicPropertyNotify value:nil permissions:0];

NSLog(@"%u",characteristic.properties);

characteristic1 = [[CBMutableCharacteristic alloc]initWithType:cUDID1 properties:CBCharacteristicPropertyWriteWithoutResponse value:nil permissions:0];

NSLog(@"%u",characteristic1.properties);

servicea = [[CBMutableService alloc]initWithType:sUDID primary:YES];

servicea.characteristics = @[characteristic,characteristic1];

[peripheral addService:servicea];

}

And the central side in the delegate is :

- (void) peripheral:(CBPeripheral *)aPeripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error

{

for (CBCharacteristic *aChar in service.characteristics){

NSLog(@"%@",aChar.UUID);

if ([aChar.UUID isEqual:[CBUUID UUIDWithString:@"DA17"]]) {

NSLog(@"Find DA17");

NSLog(@"%lu",aChar.properties);

NSString *mainString = [NSString stringWithFormat:@"12345"];

NSData *mainData= [mainString dataUsingEncoding:NSUTF8StringEncoding];

[aPeripheral writeValue:mainData forCharacteristic:aChar type:CBCharacteristicWriteWithoutResponse];

}