LPC1347 watchdog problem

Discussion created by lpcware Employee on Jun 15, 2016
Content originally posted in LPCWare by Marcus on Sun Feb 24 10:03:00 MST 2013

I have the following problem with the watchdog feature of the LPC1347.
When I program the WDMOD register with 0x0023, all works as expected.
But when I set it to 0x0033 (with the WDPROTECT bit active), the watchdog does not react to a hangup test at all.  As I understand, WDPROTECT protects the TC register against unintentional changes, but the TC register was already set befóre writing WDMOD. Any help or suggestions would be fabulous.