primer commit probando arduino, va el .ino de sensor de temperatura y humedad

libraries/Firmata/examples/SimpleDigitalFirmata/SimpleDigitalFirmata.ino

@@ -0,0 +1,72 @@
+/*
+ * Firmata is a generic protocol for communicating with microcontrollers
+ * from software on a host computer. It is intended to work with
+ * any host computer software package.
+ *
+ * To download a host software package, please clink on the following link
+ * to open the download page in your default browser.
+ *
+ * http://firmata.org/wiki/Download
+ */
+
+/* Supports as many digital inputs and outputs as possible.
+ *
+ * This example code is in the public domain.
+ */
+#include <Firmata.h>
+
+byte previousPIN[TOTAL_PORTS];  // PIN means PORT for input
+byte previousPORT[TOTAL_PORTS];
+
+void outputPort(byte portNumber, byte portValue)
+{
+  // only send the data when it changes, otherwise you get too many messages!
+  if (previousPIN[portNumber] != portValue) {
+    Firmata.sendDigitalPort(portNumber, portValue);
+    previousPIN[portNumber] = portValue;
+  }
+}
+
+void setPinModeCallback(byte pin, int mode) {
+  if (IS_PIN_DIGITAL(pin)) {
+    pinMode(PIN_TO_DIGITAL(pin), mode);
+  }
+}
+
+void digitalWriteCallback(byte port, int value)
+{
+  byte i;
+  byte currentPinValue, previousPinValue;
+
+  if (port < TOTAL_PORTS && value != previousPORT[port]) {
+    for (i = 0; i < 8; i++) {
+      currentPinValue = (byte) value & (1 << i);
+      previousPinValue = previousPORT[port] & (1 << i);
+      if (currentPinValue != previousPinValue) {
+        digitalWrite(i + (port * 8), currentPinValue);
+      }
+    }
+    previousPORT[port] = value;
+  }
+}
+
+void setup()
+{
+  Firmata.setFirmwareVersion(FIRMATA_FIRMWARE_MAJOR_VERSION, FIRMATA_FIRMWARE_MINOR_VERSION);
+  Firmata.attach(DIGITAL_MESSAGE, digitalWriteCallback);
+  Firmata.attach(SET_PIN_MODE, setPinModeCallback);
+  Firmata.begin(57600);
+}
+
+void loop()
+{
+  byte i;
+
+  for (i = 0; i < TOTAL_PORTS; i++) {
+    outputPort(i, readPort(i, 0xff));
+  }
+
+  while (Firmata.available()) {
+    Firmata.processInput();
+  }
+}