Example for "Sigfox Shield for Arduino (UnaShield V2S)" with SORACOM Harvest

example_for_unashieldv2s_w_soracom_harvest.ino

/* Get temperature from on-board sensor, sending SORACOM Harvest via Sigfox */
#include "SIGFOX.h"
static UnaShieldV2S transceiver(COUNTRY_JP, false, "NOTUSED", true); /* ref: https://unabiz.github.io/unashield/ */

void setup() { 
  Serial.begin(9600);
  if (!transceiver.begin()) stop(F("Unable to init SIGFOX module, may be missing"));
}

void loop() {
  float t;
  transceiver.getTemperature(t); /* from on-board sensor */
  char buf[7];
  dtostrf(t, -1, 1, buf); /* Arduino UNO R3 cannot cast float to char (ZZ.9) */
  Serial.println(buf);
  char json[11];
  sprintf(json, "{\"t\":%s}", buf);
  Serial.println(json);
  transceiver.sendString(json);
  delay(10000); /* waiting for next send */
}