m64def.dat or m64m1.dat

gilson163 · Joined: 30 Sep 2015 Posts: 35

I'm developing a project using ATMEGA64L-8MU (QFN 64) and BASCOM I have to use '$regfile = "m64def.dat" to build the softare and not give error. If use "$regfile = "m64m1.dat" of the following error # 41. Would anyone can help me or explain me why this error? Or why can not I use the "m64m1.dat"? Here below file for analysis
Thank you.

(BASCOM-AVR version : 2.0.7.8 , Latest : 2.0.7.8 )

_kaktus_ · Joined: 22 Mar 2014 Posts: 7

You tried on an earlier version of Bascom?

i.dobson · Posted: Sun Nov 15, 2015 9:19 am Post subject:

Hello,

Looks as if the m64m1.dat is missing the port definitions for porta/data direction Register A.

In the IO section of the dat file I see

albertsm · Joined: 09 Apr 2004 Posts: 6197 Location: Holland

you can not simply add them. they are not missing : this PORTA does not exist in the mega64M1.
Have a look in the datasheet and the pinout. you will not find any pin named with PA. At least, i did not find any.
That a chip has a similar name does not mean much. you can upgrade from 16M1 to 32M1 to 64M1 without problems, but you can not from a normal mega64 to an M.

i.dobson · Posted: Mon Nov 16, 2015 6:25 pm Post subject:

Hi,

Oh, OK I've learnt something new. I always thought that AVR's started with PortA.

Regards
Ian Dobson

gilson163 · Joined: 30 Sep 2015 Posts: 35

I did not understand completely . How then do detail to cancel this error in BASCOM compiler ?

albertsm · Joined: 09 Apr 2004 Posts: 6197 Location: Holland

it is not a problem of the compiler.
you try to access hardware (a PORTA) that does NOT exist for that chip !
- please check the PDF of the used processor
- lookup PORTA
- you will see it does not exist

gilson163 · Joined: 30 Sep 2015 Posts: 35

so if I use $regfile(m64def.dat) for atmega64L-8mU (QFN64) will have no problem. I develop the software with this? All functions work normally?

albertsm · Joined: 09 Apr 2004 Posts: 6197 Location: Holland

if your processor is atmega64L, then yes, that would be the proper thing to do.
but if your processor is atmega64M1, it will not work when using portA.

gilson163 · Joined: 30 Sep 2015 Posts: 35

I understand, thank you for the explanation.