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Discussion Groups | 68HC12 | P&E Debugger + soft reset HCS12
Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
P&E Debugger + soft reset HCS12 - Scott - Jun 22 8:19:00 2004
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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 |
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Re: P&E Debugger + soft reset HCS12 - M.B. - Jun 23 0:17:00 2004
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>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 |
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Re: P&E Debugger + soft reset HCS12 - Scott - Jun 23 10:05:00 2004
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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 |
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