Watchdog: How to do on netduino?
#1
Posted 05 February 2012 - 10:26 PM
#2
Posted 05 February 2012 - 10:56 PM
The Netduino microcontroller has [only] one hardware watchdog timer and that is used by .NET Micro Framework runtime itself, so it is not available for user applications. You'd need to add external watchdog circuit.My low level embedded colleague said "the chip prob has on board watchdog support, so if your code hangs, it can get rebooted"
#3
Posted 06 February 2012 - 12:34 AM
#4
Posted 06 February 2012 - 12:43 AM
The Netduino microcontroller has [only] one hardware watchdog timer and that is used by .NET Micro Framework runtime itself, so it is not available for user applications. You'd need to add external watchdog circuit.
But doesn't the LPC2387/8(used for FEZ boards) also contain a single wdt?Couldn't the functionality of the WDT also be exposed like GHI did?
#5
Posted 06 February 2012 - 05:56 AM
#6
Posted 06 February 2012 - 08:32 AM
Probably yes (?)But doesn't the LPC2387/8(used for FEZ boards) also contain a single wdt?Couldn't the functionality of the WDT also be exposed like GHI did?
But it seems I was completely wrong about the usage of WDT on Netduino boards - I have checked the firmware source code more thoroughly (not just PAL functions) and all Netduino solutions are configured to use watchdog stubs, probably because there is no watchdog driver for AT91SAM7 (!?)
#7
Posted 06 February 2012 - 02:08 PM
#8
Posted 05 March 2013 - 01:08 AM
I have designs and plans to build a hardware watchdog you can use on a breadboard. It is based on the MAX6373 chip.
I have posted the designs in another thread, or I can build one for you if you are interested.
#9
Posted 05 March 2013 - 06:13 AM
#10
Posted 14 March 2013 - 07:39 PM
Very cool, I've looked at AxelG's MAX6373 solution. I even got a couple free sample to play with. Now I just need micro fingures to solder the micro SOP.
#11
Posted 18 March 2013 - 06:49 PM
I have an extra board;happy to send it along... Just PM me.
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