Arduino nRF24L01 RX

//This demo Working with Arduino Uno or nano.
//For nRF24L01, rec string.
//TX:http://pastebin.com/5Ju5XUPr
//這程式碼是給Arduino+nRf24L01用來傳送訊息的
//It working good.
//部分修改自網路
//接收訊息完整 沒有缺漏
////Library:https://codeload.github.com/maniacbug/RF24/zip/master
#include <nRF24L01.h>
#include <RF24.h>
#include <RF24_config.h>
#include <SPI.h>
 //Rec MSG
/*
This sketch receives strings from sending unit via nrf24
and prints them out via serial.  The sketch waits until
it receives a specific value (2 in this case), then it
prints the complete message and clears the message buffer.
*/

int msg[1];
RF24 radio(9,10);
const uint64_t pipe = 0xF0F0F0F0E1LL; //選擇管線，接收與傳送需要一致
int lastmsg = 1;
String theMessage = "";
void setup(void){
  Serial.begin(9600);
    Serial.println("I am getter.");
  radio.begin();
   radio.enableDynamicPayloads();
    radio.setAutoAck(1);
    radio.setRetries(15,15);
    radio.setDataRate(RF24_250KBPS);
    radio.setPALevel(RF24_PA_MAX);
    radio.setChannel(76);//選擇76頻道，避開干擾
  //  radio.openWritingPipe(0xF0F0F0F0E1LL);
  radio.openReadingPipe(1,pipe);
  radio.startListening();
}
void loop(void){
  if (radio.available()){
    bool done = false;
      done = radio.read(msg, 1);
      char theChar = msg[0];
      if (msg[0] != 11){ //接收傳送需一致
        theMessage.concat(theChar);
        }
      else {
       Serial.println(theMessage);
       theMessage= "";
      }
   }
}