16F84 to 16F648A program converter

[camerart]

Hi All,

My first post.

I want to make a morse decoder, that will change radio morse signals to a display screen, also a a second one where I can type a letter and convert to morse for sending via radio.

I have circuits and programs that use 16F84 chips (which I have), but setting the programming programs on the computer is proving a bit difficult, and I would rather use 16F648A or 16F819 chips, as I can program them, and am set-up for them.

If anyone can help I would appreciate it.

Cheers, Camerart

[Archangel]

Hi camerart,
add cmcon = 7 into the top area of your code. Should be all you need to change as the 16F648 has analog comparators and the 16F84 does not. (working' from memory here)

[camerart]

Hi camerart,
add cmcon = 7 into the top area of your code. Should be all you need to change as the 16F648 has analog comparators and the 16F84 does not. (working' from memory here)

Hi Archangel,

Thanks. When I said I have the programs, I meant programs for the 16F84. I have attached one. I need to either study and understand it, or convert it somehow to PIC basic for 16F648A. Quite a task, especially from memory

Cheers, Camerart.

[Sherbrook]

Hi camerart

Have a look at Nigel Goodwins WinPicProg PIC Tutorial http://www.winpicprog.co.uk/pic_tutorial.htm
Tutorial 1 shows how to turn off comparators and make PIC like a 16F84

movlw 0x07
movwf CMCON ;turn comparators off (make it like a 16F84)

Phil

[camerart]

Hi Phil,

Thanks, I had a look, but I prefer in this case if someone can decode the program I attached, which is already proven, and goes straight into the circuit. I don't want to have to do R and D.

Camerart.

Hi camerart

Have a look at Nigel Goodwins WinPicProg PIC Tutorial http://www.winpicprog.co.uk/pic_tutorial.htm
Tutorial 1 shows how to turn off comparators and make PIC like a 16F84

movlw 0x07
movwf CMCON ;turn comparators off (make it like a 16F84)

Phil

[Art]

And again, add this to the source code you posted (after it's init label) :

movlw 0x07
movwf CMCON

Research and development is over! def works with 16F628/A.
Don't know how you're going to get on when you come to actually having to do some.

Quite a task, especially from memory

Yes, adding two instructions of spoon fed code is much more difficult
than porting an entire program from a low level language to a high level one!

[camerart]

And again, add this to the source code you posted (after it's init label) :

movlw 0x07
movwf CMCON

Research and development is over! def works with 16F628/A.
Don't know how you're going to get on when you come to actually having to do some.

Yes, adding two instructions of spoon fed code is much more difficult
than porting an entire program from a low level language to a high level one!

Hi ART,

Do I detect a hint of sarcasm?

Actually, my answers are after many years of trying to learn to be expert in PIC programming, but I'm afraid age has caught me up and it is really difficult for me.

What you ( and previous messages) say is probably true and I'll try it.

Thanks, Camerart.

[Art]

Of course.
You can probably get the chip as a free sample, build the project with an 18 pin (or whatever) IC socket,
and you have nothing to lose.