adds board id util

Author: toddtreece

src/AdafruitIO.cpp

@@ -199,6 +199,11 @@ aio_status_t AdafruitIO::status()
   return _status;
 }
 
+char* AdafruitIO::id()
+{
+  return AdafruitIO_Board::id();
+}
+
 aio_status_t AdafruitIO::mqttStatus()
 {
   // if the connection failed,

src/AdafruitIO.h

@@ -19,6 +19,7 @@
 #include "AdafruitIO_Dashboard.h"
 #include "AdafruitIO_Data.h"
 #include "ArduinoHttpClient.h"
+#include "util/AdafruitIO_Board.h"
 
 #ifndef ADAFRUIT_MQTT_VERSION_MAJOR
   #error "This sketch requires Adafruit MQTT Library v0.16.0 or higher. Please install or upgrade using the Library Manager."
@@ -52,6 +53,7 @@ class AdafruitIO {
 
     aio_status_t status();
     virtual aio_status_t networkStatus() = 0;
+    char* id();
     aio_status_t mqttStatus();
 
   protected:

src/util/AdafruitIO_Board.cpp

@@ -0,0 +1,61 @@
+//
+// Adafruit invests time and resources providing this open source code.
+// Please support Adafruit and open source hardware by purchasing
+// products from Adafruit!
+//
+// Copyright (c) 2015-2016 Adafruit Industries
+// Authors: Todd Treece
+// Licensed under the MIT license.
+//
+// All text above must be included in any redistribution.
+//
+#include "AdafruitIO_Board.h"
+
+char AdafruitIO_Board::_id[64] = "";
+
+#if defined(ARDUINO_ARCH_SAMD)
+
+  char* AdafruitIO_Board::id()
+  {
+    volatile uint32_t val1, val2, val3, val4;
+    volatile uint32_t *ptr1 = (volatile uint32_t *)0x0080A00C;
+    val1 = *ptr1;
+    volatile uint32_t *ptr = (volatile uint32_t *)0x0080A040;
+    val2 = *ptr;
+    ptr++;
+    val3 = *ptr;
+    ptr++;
+    val4 = *ptr;
+
+    sprintf(AdafruitIO_Board::_id, "%8x%8x%8x%8x", val1, val2, val3, val4);
+
+    return AdafruitIO_Board::_id;
+  }
+
+#elif defined(ARDUINO_ARCH_AVR)
+
+  char* AdafruitIO_Board::id()
+  {
+    for(int i=0; i < 32; i++) {
+      sprintf(&AdafruitIO_Board::_id[i*2],"%02x", boot_signature_byte_get(i));
+    }
+    return AdafruitIO_Board::_id;
+  }
+
+#elif defined(ESP8266)
+
+  char* AdafruitIO_Board::id()
+  {
+    sprintf(AdafruitIO_Board::_id, "%06x", ESP.getChipId());
+    return AdafruitIO_Board::_id;
+  }
+
+#else
+
+  char* AdafruitIO_Board::id()
+  {
+    strcpy(AdafruitIO_Board::_id, "unknown");
+    return AdafruitIO_Board::_id;
+  }
+
+#endif

src/util/AdafruitIO_Board.h

@@ -0,0 +1,30 @@
+//
+// Adafruit invests time and resources providing this open source code.
+// Please support Adafruit and open source hardware by purchasing
+// products from Adafruit!
+//
+// Copyright (c) 2015-2017 Adafruit Industries
+// Authors: Todd Treece
+// Licensed under the MIT license.
+//
+// All text above must be included in any redistribution.
+//
+#ifndef ADAFRUITIO_BOARD_H
+#define ADAFRUITIO_BOARD_H
+
+#include "Arduino.h"
+
+#if defined(ARDUINO_ARCH_AVR)
+  #include <avr/boot.h>
+#endif
+
+class AdafruitIO_Board {
+
+  public:
+
+    static char _id[64];
+    static char* id();
+
+};
+
+#endif // ADAFRUITIO_BOARD_H