Minimal code to use the SHT31 with NINA

Based on Sensirion SHT examples

firmware/examples/sht-autodetect/sht-autodetect.ino

@@ -0,0 +1,41 @@
+#include <Wire.h>
+
+#include "SHTSensor.h"
+
+SHTSensor sht;
+// To use a specific sensor instead of probing the bus use this command:
+// SHTSensor sht(SHTSensor::SHT3X);
+
+void setup() {
+  // put your setup code here, to run once:
+
+  Wire.begin();
+  Serial.begin(115200);
+  delay(1000); // let serial console settle
+
+  if (sht.init()) {
+      Serial.print("init(): success\n");
+  } else {
+      Serial.print("init(): failed\n");
+  }
+  sht.setAccuracy(SHTSensor::SHT_ACCURACY_MEDIUM); // only supported by SHT3x
+
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+  if (sht.readSample()) {
+      Serial.print("SHT:\n");
+      Serial.print("  RH: ");
+      Serial.print(sht.getHumidity(), 2);
+      Serial.print("\n");
+      Serial.print("  T:  ");
+      Serial.print(sht.getTemperature(), 2);
+      Serial.print("\n");
+  } else {
+      Serial.print("Error in readSample()\n");
+  }
+
+  delay(1000);
+}