• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 31 subscribers
  • Views 346 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AWR6843: Question about (internal) watchdog period

Hayden Kim
Genius 15580 points
Part Number: AWR6843

From TRM,

The maximum preload value is 0xFFF (4095).

Also, the expiration time calculation is as below.

    texp = (DWDPRLD+1) x 2^13 / RTICLK

(RTICLK = 200M)

So, the maximum expiration will be (4095+1)*8192/200M = 168(ms), is it correct?

When he wants longer expiration time period (for example 3 seconds), is it possible with the internal watchdog?

Can you please give idea how to make it?

Best regards,

Hayden

  • +1
    TI__Genius 13235 points

    Hi Hayden,

    I'm going to look into this further, but it appears that this is the max preload value per the TRM. If you did not want a reset to occur after this amount of time you could potentially configure the watchdog to perform an NMI when it expires instead of the reset. Then keep track of how often this occurs and trigger a reset after some number of watchdog expirations. 

    Thanks,

    Clinton