Seeeduino LoRaWan Uart

hi there,

i looking make seeeduino lorawan board communicate raspi on uart.
on raspi side minicom doing great job , seems working fine (rx , tx linked).
however, once try on seeeduino doesn't work @ all.

code: [select]



#include <softwareserial.h>

softwareserial myserial(2, 3); // rx, tx

void setup() {
 // open serial communications , wait port open:
 serialusb.begin(9600);
 while (!serial) {
   ; // wait serial port connect. needed native usb port only
 }


 serial.println("goodnight moon!");

 // set data rate softwareserial port
 myserial.begin(9600);
 myserial.println("hello, world?");
}
void loop() { // run on , over
if (myserial.available()) {
  serialusb.println("test2");
}
if (serial.available()) {
   myserial.write("test1");
   }
}



its not @ clear trying do, understand;

1. provide link boards using.

2. provide circuit diagram of how have wired up.

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