AT debug console for EC21-J on WioLTE

WioLTE-J_EC21-J_AT_debug.ino

/*
Working exapmle on Console;

```
>> Waiting for AT command

+CPIN: READY

+QUSIM: 1

+QIND: SMS DONE

+QIND: PB DONE

OK
AT+CGDCONT?[enter]  <== input from you
+CGDCONT: 1,"IPV4V6","internet","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
+CGDCONT: 2,"IPV4V6","","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
+CGDCONT: 3,"IPV4V6","ims","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
+CGDCONT: 4,"IPV4V6","","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,1

OK
```
*/

#define BAUDRATE 9600

#define CONSOLE SerialUSB
#define EC21J SerialModule

#include <WioLTEforArduino.h> /*  https://github.com/SeeedJP/WioLTEforArduino */
WioLTE Wio;

void setup() {
  CONSOLE.begin(BAUDRATE);
  Wio.Init();
  Wio.PowerSupplyLTE(true);
  delay(5000L);
  if (!Wio.TurnOnOrReset()) {
    CONSOLE.println(F("### ERROR! ###"));
    return;
  }
  delay(3000L);
  EC21J.write("ATE1"); // echo back ON
  EC21J.write(0x0d); // send CR
  CONSOLE.println(F(">> Waiting for AT command"));
}
void loop() {
  if (EC21J.available()) {
    CONSOLE.write(EC21J.read());
  }
  if (CONSOLE.available()) {
    EC21J.write(CONSOLE.read());
  }
}