added getDeviceId()

RFduino · RFduino · commit 3cd7251ac131 · 2014-01-06T12:18:25.000-07:00
diff --git a/CHANGELOG b/CHANGELOG
@@ -1,5 +1,9 @@
 CHANGELOG
 
+v 1.6
+  - Added getDeviceId() to return the unique id for each device
+    (see DeviceInfo sketch)
+
 v 1.5.1
   - Added support for OSX (contributed by nitsky)
   - RFDLoader now supports 32-bit and 64-bit osx snow leopard through mavericks
diff --git a/libraries/RFduinoNonBLE/examples/DeviceInfo/DeviceInfo.ino b/libraries/RFduinoNonBLE/examples/DeviceInfo/DeviceInfo.ino
@@ -0,0 +1,11 @@
+void setup() {
+  Serial.begin(57600);
+
+  Serial.println("The device id is:");
+  uint64_t id = getDeviceId();
+  Serial.println(getDeviceIdLow(), HEX);
+  Serial.println(getDeviceIdHigh(), HEX);
+}
+
+void loop() {
+}
diff --git a/variants/RFduino/variant.cpp b/variants/RFduino/variant.cpp
@@ -260,6 +260,21 @@ uint8_t UART0_RX()
   return uc_data;
 }
 
+uint32_t getDeviceIdLow()
+{
+  return NRF_FICR->DEVICEID[0];
+}
+
+uint32_t getDeviceIdHigh()
+{
+  return NRF_FICR->DEVICEID[1];
+}
+
+uint64_t getDeviceId()
+{
+  return ((uint64_t)getDeviceIdHigh() << 32) | getDeviceIdLow();
+}
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/variants/RFduino/variant.h b/variants/RFduino/variant.h
@@ -166,6 +166,11 @@ uint8_t UART0_RX();
 
 #include "Memory.h"
 
+// unique id for each unit
+uint32_t getDeviceIdLow();
+uint32_t getDeviceIdHigh();
+uint64_t getDeviceId();
+
 #ifdef __cplusplus
 }
 #endif
