Diff: uniqueCPUID.h

Revision:

0:b9461291f915

Child:

1:c7453c2b8a2f

diff -r 000000000000 -r b9461291f915 uniqueCPUID.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uniqueCPUID.h	Wed Mar 09 18:04:45 2016 +0000
@@ -0,0 +1,39 @@
+/*
+  by Joseph Ellsworth CTO A2WH.
+  Freeuse for all.  No promises,  No warranty *
+  Please contact us http://a2wh.com for help with custom design projects.
+
+  Most STM and Freescale ARM chips include a unique Serail Number embedded
+  in the CPU.  This is a perfect number to use in IoT as a SSID.  I use
+  this to produce the WIFi SID so I can walk up with a phone and download
+  telemetry.   I found a blog discussion for mbed that suggested using the
+  MAC but this assumes mbed hardware whereas this version uses the serial
+  number built in to the CPU so it should work on native boards.
+*/
+
+#ifndef uniqueCPUID_h
+#define uniqueCPUID_h
+#include "mbed.h"
+
+#define uniqueSerialAdd_kl_freescale (unsigned long *)0x40048058
+#define uniqueSerialAddr_stm32 (unsigned long *)0x1FFFF7E8
+
+//TODO: Add logic to detect the different boards and select the correct
+//  CPU ID based on the active board.
+#define uniqueSerialAddr uniqueSerialAdd_kl_freescale
+
+// Change to enable for address for your chip family
+// Note some ealry stm L3 chips were produced with all
+// chip ID set to FFF.  I have not seen any but did find
+// it mentioned in a blog.
+
+
+/* format the unique serial number as a string. we could use
+as the router SID for Lot.  Supress leading zeros to save
+space */
+void getUniqueIDAsStr(char *destStr);
+
+/* Send unique device ID to serail port */
+void printUniqueId(Serial pc);
+
+#endif