// Don´t forget to add the connections from RX/TX pin to the serial monitor in diagram.json!

#include <stdio.h>
#include "pico/stdlib.h"
#include <tusb.h>

#define MAX_MESSAGE_LENGTH 12

int main() {
  stdio_init_all();
  while (!tud_cdc_connected()) 
  {
    sleep_ms(100);
  }
  printf("tud_cdc_connected()\n");
  while (true) 
  {  //Check to see if anything is available in the serial receive buffer
    while (tud_cdc_available()) //Create a place to hold the incoming message
    static char message[MAX_MESSAGE_LENGTH];
    static unsigned int message_pos = 0;
    //Read the next available byte in the serial receive buffer
    char inByte = getchar();
    //Message coming in (check not terminating character) and guard for over message size
    if ( inByte != '\n' && (message_pos < MAX_MESSAGE_LENGTH - 1) )
      {
        //Add the incoming byte to our message
        message[message_pos] = inByte;
        message_pos++;
      }
      //Full message received...
    else
    {
      //Add null character to string
      message[message_pos] = '\0';
      printf("%s\n",message);
      //Reset for the next message
      message_pos = 0;
    }
  }
} 

return 0;