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Discussion Groups | 68HC12 | CML12-DP256 AUTORUN OR START PROGRAM AUTOMATICALLY HELP
Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
CML12-DP256 AUTORUN OR START PROGRAM AUTOMATICALLY HELP - jobi...@yahoo.com - Dec 6 20:47:25 2007
Hi,
I am having some problems running my program in CML12-DP256 development board.
I want the program to run automatically when the development board is booted up. I am running into 2 problems. I use Axide Monitor software that i downloaded from the Axman website.(www.axman.com).
Problem A)
Auto-run feature does not work. I load the program into EEPROM starting at $8000. If i use monitor and call the program by typing " call 8000" the program runs fine. But if i try to use Auto run by typing "AUTO 8000", and then i disable the NO_AUTO pin and restart the micro-controller, the program does not run on startup.( ECS pin is ON.MEMORY PIN IS ON.JP1 AND JP2 PINS ARE ON.). I do not understand it. Also the EEPROM at $4000 does not work. I cannot load the program to $4000.Axide gives me a Bad-checksum error.???
Problem B)
If i turn off power supply the eeprom gets erased. Isn't it supposed to be nonvolatile and be permanently stored
OPTIONS I HAVE--- I was thinking of disabling monitor and writing my program start address to $FFFE. I cannot change it now using Axide because the $FFFE address is locked. Does anyone know if i can change it using any other method?
Regarding the other problems i am encountering, please help me out. Any help is appreciated.
Thank you
Jobin
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )
I am having some problems running my program in CML12-DP256 development board.
I want the program to run automatically when the development board is booted up. I am running into 2 problems. I use Axide Monitor software that i downloaded from the Axman website.(www.axman.com).
Problem A)
Auto-run feature does not work. I load the program into EEPROM starting at $8000. If i use monitor and call the program by typing " call 8000" the program runs fine. But if i try to use Auto run by typing "AUTO 8000", and then i disable the NO_AUTO pin and restart the micro-controller, the program does not run on startup.( ECS pin is ON.MEMORY PIN IS ON.JP1 AND JP2 PINS ARE ON.). I do not understand it. Also the EEPROM at $4000 does not work. I cannot load the program to $4000.Axide gives me a Bad-checksum error.???
Problem B)
If i turn off power supply the eeprom gets erased. Isn't it supposed to be nonvolatile and be permanently stored
OPTIONS I HAVE--- I was thinking of disabling monitor and writing my program start address to $FFFE. I cannot change it now using Axide because the $FFFE address is locked. Does anyone know if i can change it using any other method?
Regarding the other problems i am encountering, please help me out. Any help is appreciated.
Thank you
Jobin
(You need to be a member of 68hc12 -- send a blank email to 68hc12-subscribe@yahoogroups.com )