Grove UltrasonicRanger plot to SORACOM Harvest (for CodeZine)

grove-ultrasonic-ranger_soracom-harvest.ino

/* CodeZine: Grove IoT Starter Kit for SORACOM <grove-ultrasonic-ranger_soracom-harvest.ino> */

#include <stdio.h>
#include <WioLTEforArduino.h>
WioLTE Wio;
#include <Ultrasonic.h>

#define ULTRASONIC_PIN  (WIOLTE_D38)
#define INTERVAL        (3000)
#define RECEIVE_TIMEOUT (10000)

Ultrasonic UltrasonicRanger(ULTRASONIC_PIN);

void setup()
{
  delay(200);

  SerialUSB.println("");
  SerialUSB.println("--- START ---------------------------------------------------");

  SerialUSB.println("### I/O Initialize.");
  Wio.Init();

  SerialUSB.println("### Power supply ON.");
  Wio.PowerSupplyLTE(true);
  delay(500);

  SerialUSB.println("### Turn on or reset.");
  if (!Wio.TurnOnOrReset()) {
    SerialUSB.println("### ERROR! ###");
    return;
  }

  SerialUSB.println("### Connecting to \"soracom.io\".");
  if (!Wio.Activate("soracom.io", "sora", "sora")) {
    SerialUSB.println("### ERROR! ###");
    return;
  }
}

void loop()
{
  long distance;
  distance = UltrasonicRanger.MeasureInCentimeters();
  char data[128];
  sprintf(data,"{\"distance_cm\":%lu}", distance);

  SerialUSB.println("### Open.");
  int connectId;
  connectId = Wio.SocketOpen("harvest.soracom.io", 8514, WIOLTE_UDP);
  if (connectId < 0) {
    SerialUSB.println("### ERROR! ###");
    goto err;
  }

  SerialUSB.println("### Send.");
  SerialUSB.print("Send:");
  SerialUSB.println(data);
  if (!Wio.SocketSend(connectId, data)) {
    SerialUSB.println("### ERROR! ###");
    goto err_close;
  }

  SerialUSB.println("### Receive.");
  int length;
  char res[128];
  length = Wio.SocketReceive(connectId, res, sizeof(res), RECEIVE_TIMEOUT);
  if (length < 0) {
    SerialUSB.println("### ERROR! ###");
    goto err_close;
  }
  if (length == 0) {
    SerialUSB.println("### RECEIVE TIMEOUT! ###");
    goto err_close;
  }
  SerialUSB.print("Receive:");
  SerialUSB.println(res);

err_close:
  SerialUSB.println("### Close.");
  if (!Wio.SocketClose(connectId)) {
    SerialUSB.println("### ERROR! ###");
    goto err;
  }

err:
  delay(INTERVAL);
}