Thanks for the information. Very interesting and it fully explains why it is important to do a power reset after a firmware upgrade. 73 Dave KD1NA
On 2/7/2011 10:45 AM, Dick Dievendorff wrote: > There is a subtle difference. The K3 Utility does indeed issue a command that > causes a reset. However pressing the power button initiates what Wayne calls > "parameter save" where selected parameters (like the VFO frequency) are saved > to EEPROM for use after the next start. > > So power off and on is just a bit more than reset. > > Config save preserves this EEPROM. During restore I write to that EEPROM, > then reset the MCU. During startup the newly restored EEPROM is used to set > up RAM versions of config. Restore wouldn't work if EEPROM were written as > part of the post-restore reset. > > To see this at work: turn the VFO to 7.00000 MHz, then turn the radio off and > on. It should come back at 7.000 MHz. Then turn the VFO to 7.050. Then load > firmware. After the firmware reset completes, what VFO setting do you see? > That's the EEPROM parameter save at work. If you save and restore config, the > current VFO setting us one of those settings. > > Dick, K6KR > > On Feb 7, 2011, at 7:34, "David Robertson"<[email protected]> wrote: > >> Everyone, >> Many times by both the K3 engineers and others it has been stated to recycle >> the K3 power after doing a firmware upgrade. I understand the logic behind >> this action and do perform a power reset after doing a firmware upgrade or >> reload. My question is this. Every time a firmware upgrade is installed >> there are several apparent power resets that occur, even after the firmware >> install is finished. Am I correct in assuming these apparent power resets >> are not complete resets? >> >> Thanks and 73 >> Dave KD1NA >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
