Static Register

charles2399 · ‎2009-01-19

Posted on January 19, 2009 at 10:18

Static Register

charles2399 · ‎2011-05-17

Posted on May 17, 2011 at 12:59

Is there a register on the cortex m3 that can be used like static ram?

We would like to find a user registr that retains it value through a process/watchdog reset.

Is there such a beast?

- chuck

st3 · ‎2011-05-17

Posted on May 17, 2011 at 12:59

Why not just use the on-chip RAM...?

trevor1 · ‎2011-05-17

Posted on May 17, 2011 at 12:59

Have a look at the ''backup registers''. These retain their values through a reset (and power down if battery backed). See the firmware lib for examples.

They are powered from the same supply that powers the RTC.