NSData*testData = characteristic.value;
Byte*testByte= (Byte*)[testDatabytes];
NSMutableArray*midArray= [NSMutableArrayarray];
for(inti=0;i<[testDatalength];i++){
[midArrayaddObject:[NSStringstringWithFormat:@"%d",testByte[i]]];
}
for(NSString*strinmidArray) {
[_mutStrappendString:str];
[_mutStrappendString:@"/"];
}