File content as of revision 0:4c0aba0c6eb1:

#include "mbed.h"
#include "UDPSocket.h"
#include "LM005A.h"
DigitalOut myled(PF_12);
LM005A Lora(PB_6,PB_7,true);
DigitalOut Enable(PD_13);
DigitalOut RST(PD_12);
#define ECHO_SERVER_PORT   5683
#define SERVER_ADDR "180.101.147.115"
Thread recvThread;
Mutex s;
int mIndex=0;
void receive()
{ char rbuf[32];
 char sbuf[64];
int len;
bool result; 
    while(true)
    {
     s.lock();
     len=Lora.recv(2,rbuf,2);
     s.unlock();
     if (len>0)
     {
      printf("receive %d :%0.*s\n",len,len,rbuf); 
       
    len= sprintf(sbuf,"Hello guodong Server %d\n",mIndex);mIndex++;
      s.lock();
    result= Lora.send(2,1,sbuf,len);
    s.unlock();
    if (result)
       printf("Send successful\n");
       else
      printf("send error\n");   
      }
    }
}
int main() {
          char buffer[64];
      int val; 
      int len;
      bool result; 
      const char * ss;  
      char temp[4];
       Enable=1;
      RST=0;
      RST=1;
          printf("LM005A LoRa Demo Waiting For boot up ... \n");
      Lora.setTimeout(55000);    
     result=Lora.init();  
     if (result)
        printf("Lora Modular BootUp\n");
          ss=Lora.get_firmware_version();
     printf("firmware  version =%s\n",ss);
      ss=Lora.getDeviceAddress();
     printf("device address=%s\n",ss);
        ss=Lora.getEUI(0);
     printf("get DEVEUI=%s\n",ss);
          ss=Lora.getEUI(1);
     printf("get APPEUI=%s\n",ss);
        val=Lora.set_mode(0);
      printf("set Mode %d\n" ,val); 
         val=Lora.set_class(1);
      printf("set class %d\n" ,val);  
          val=Lora.set_power(20);
      printf("set power %d\n" ,val);
   //         val=Lora.set_band(0,4715);
   //   printf("set Fixed band %d\n" ,val);
   //      Lora.reset();
       result=Lora.join();
      if (result)
       printf("join the network\n");
     len=  sprintf(buffer,"Hello guodong server " );
    result= Lora.send(2,0,buffer,len);
    if (result)
      printf("send Data\n");
      else
      printf("send Data ERROR\n");  
      myled = 1; 
      recvThread.start(&receive); 
    while(1) {
          wait(20);
   /*      buffer[0]=0x01; 
        float a=12.4;
       memcpy(&temp[0],&a,4);
       buffer[1]=temp[3];buffer[2]=temp[2];buffer[3]=temp[1];buffer[4]=temp[0];
        buffer[5]=1;
        a=2.22;
        memcpy(&temp[0],&a,4);
        buffer[6]=temp[3];buffer[7]=temp[2];buffer[8]=temp[1];buffer[9]=temp[0];
        buffer[10]=2;
        Lora.send(0x00,0x00,buffer,10);*/
       // LED is ON
    /*    s.lock();
     sprintf(buffer,"HeartBeat\n");
    result= Lora.send(2,0,buffer,10);
    s.unlock();
    if (result)
       printf("send Data\n");
       else
      printf("send Data ERROR\n");  */
        myled = !myled; // LED is OFF
       
    }
}