P&E Debugger + soft reset HCS12 | 68HC12

Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).

Hi, I am running into a problem where my software reset will work while running with my debugger but when it is removed the code locks up somwhere. Since I dont have a debugger attached when it locks up I cant tell what happens, and it works with the debugger running. I do not enable cop either thinking that cop could be timing out. On top of that I make sure in my reset routine to disable cop. Currently my reset routine will (i dont disable cop here) asm("sei") //disable interrupts asm("jmp __start") //jump to start of program This works fine when running through the BDM and debugger. But with everything detached its useless. Any help would be appreciated. Thanks Scott

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.

(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )

>asm("sei") //disable interrupts >asm("jmp __start") //jump to start of program >This works fine when running through the BDM and debugger. But with >everything detached its useless. Any help would be appreciated. If You use once writeable registers you can't write this after your sowtware reset. At BDM and debugger You can modify this register. Use COP reset... Mariusz

(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )

Thanks, i happen to move my ram during initialization which happens to be a write once I believe. Thanks for the tip. scott --- In , "M.B." <manekb@p...> wrote: > > >asm("sei") //disable interrupts > >asm("jmp __start") //jump to start of program > >This works fine when running through the BDM and debugger. But with > >everything detached its useless. Any help would be appreciated. > > If You use once writeable registers you can't write this after your sowtware > reset. > At BDM and debugger You can modify this register. > Use COP reset... > > Mariusz

______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.

(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )

Sign in

Search 68hc12

Subscribe to 68hc12

68hc12 by Keywords

Ads

Discussion Groups

See Also

Discussion Groups | 68HC12 | P&E Debugger + soft reset HCS12

P&E Debugger + soft reset HCS12 - Scott - Jun 22 8:19:00 2004

Re: P&E Debugger + soft reset HCS12 - M.B. - Jun 23 0:17:00 2004

Re: P&E Debugger + soft reset HCS12 - Scott - Jun 23 10:05:00 2004