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Hello,
I am dealing with a puzzeling situation: working with an embedded artists LPC1788 board, I have a program that enables the WDT but fails to restart after it resets the system (it crashes hard, disconnecting the debugger). But if I then power cycle or use the reset button - the program starts up correctly! I see no difference between WDT reset and external reset in the user manual. I have to say that it looks as if it is related to memory (?); If I do not start FreeRTOS scheduler the program will not crash, but it is still hard to explain! Any ideas?
@IB Shy,
Crap, I just realized it is possibly a silicon issue..! I will download the user manual of the LPC3250 and look into. I hope something similar can be done for the LPC1788 ! Thanks.
"I will download the user manual of the LPC3250 and look into."
There was nothing in the LPC3250 manual that mentions this. I communicated with NXP support about it and they weren't (then) aware of anything.
It was a case of getting the 'scope out and measuring the signals.
When I narrowed the problem down, I told them about it. I never got a follow-up from them regarding the matter.
Anyway ... hope the info helps.
DJR
In other words - the LPC1788 suffers from the same issue, and the EA evaluation board for LPC1788 cannot recover from watchdog resets if the network interface is used. I discusses the situation with one of the hardware people; we are going to use another PHY that requires a much shorter reset pulse!