Implement the watchdog timer

[joshctaylor]

The watchdog timer could be used to force a hard reboot if the software locks up

[nedhorning]

I'll need help with this.

[joshctaylor]

I'll need help with this.

I just uploaded a demo for you - slowly getting around to the other bits :)

[nedhorning]

I noticed that the counter increments by 2 when a reset happens and can't figure out why since it's set in the setup. .

[joshctaylor]

I have to admit, I tested the reset counter before adding it to the watchdog example. I'll get some time later this week to look.

[joshctaylor]

Hi @nedhorning I can't recreate this error - its counting correctly for me and tested up to 45 cycles and counting. Did you use the tool to initialise the EPROM to zero?

[nedhorning]

I didn't initialize the EPROM to zero. Should I do that? I wasn't sure which tool you refer to. I can set all registers to zero but not sure how else to initialize it.

[joshctaylor]

Moving from emails back to this thread - yes it looks as though this could be the terminal app (I'm using the one built into Arduino on mac) or the serial driver on the PC taking its time. Does adding a delay of a few seconds before the startup message solve the issue?

[nedhorning]

I tried setting delays at different places and also move Serial.begin and associated while loop to the top of the setup() but the sporadic reset messages persisted. I have a feeling there is an issue reestablishing the serial connection after a restart although not sure why that would be and especially why it would be sporadic. If I can get some time this weekend I'll add the watchdog timer to the tracker code and will try to monitor it via the LoRa packet. I'll add the STM chip temperature as well.