12f675_fuse_about_to_blow!

[LEDave]

Is there a set of code instructions for THE PBP demo version?

I'm trying to get an understanding of GPIO and the register TRISIO. If you set a TRISIO bit low you make the corresponding GPIO pin an output (I think) Except GP3 which is always an INPUT.

I've got a very blurred picture of how this all fits together, one day the fog will lift.... I hope.

Dave

[mackrackit]

http://www.melabs.com/resources/index.htm#Manuals
http://melabs.com/products/pbpis.htm

I'm trying to get an understanding of GPIO and the register TRISIO. If you set a TRISIO bit low you make the corresponding GPIO pin an output (I think) Except GP3 which is always an INPUT.

Now I see a mess up in my last code

    GPIO = %11001111
    GPIO = %00010000

should be

    TRISIO = %11001111
    GPIO = %00010000

I think.....
Sorry about that.

[LEDave]

Hi mackrackit

Yes I ran that code and it compiled with no errors.

I loaded the HEX code (confirmed write successful) but the LED's didn't light?

I reloaded you earlier HEX file and all three LED's jogging along nicely.

[mackrackit]

Yup, different code for different PICs.
When do your 12F683s arrive?

[LEDave]

I changed the code from GPIO to TRISIO

RE-compiled, re-loaded the HEX code file and away she ran.....!

Time for me to pause here mackrackit. I need to break your program down and figure out exactly what's going on. That way I can move on.

I'll try and figure it out and if you'd be so kind you can tell me how I got on.

It's the only way for me to learn.

As ever thanks for your help.

Dave

[mackrackit]

I'll try and figure it out and if you'd be so kind you can tell me how I got on.

I like it when someone wants to learn.
I will be here....

[LEDave]

The 12F683's arrived today! I didn't order them until late last night, talk about service, I love the internet....:-)

I changed the 12F675 PIC over to a 12F683 and it ran your program a treat.

I've got a lot to learn still, a huge amount but really enjoying it.

My first project (I'm getting ahead of myself here I know) but my first project will be to make a 12F683 OUTPUT binary coded decimal four bit words and drive a seven segment display. I figure with the 12F683 having six outputs this is a viable project.

Dave

[LEDave]

"I like it when someone wants to learn.
I will be here...."

Thanks for that mackrackit I appreciate it. I hope I don't drive you insane during my learning curve.....!

I'm off to bed now to dream of TRISO's.......

Dave

[mackrackit]

My first project (I'm getting ahead of myself here I know) but my first project will be to make a 12F683 OUTPUT binary coded decimal four bit words and drive a seven segment display. I figure with the 12F683 having six outputs this is a viable project.

Well....
I hate to tell you this but I think there is something wrong with your counting...
Or mine

[Archangel]

Hi LEDDave,
16F628A might be easier to drive 7 segment as no driver translator chip required ( because it has enough ports ). Your biggest challange will be due to 31 lines of code limitation, in the Demo program.
I do not know if assembly code is counted in that limitation.
If you have that problem I am sure Mackrackit and I would compile a few programs for you, enough so you believe this compiler is worth it's price.

[mackrackit]

Hi LEDDave,
16F628A might be easier to drive 7 segment as no driver translator chip required ( because it has enough ports ). Your biggest challange will be due to 31 lines of code limitation, in the Demo program.
I do not know if assembly code is counted in that limitation.
If you have that problem I am sure Mackrackit and I would compile a few programs for you, enough so you believe this compiler is worth it's price.

Yup, I will help.
Problem is, I can not find a "large" PIC that will work with the demo and the PICkit1. (14 pins)
So LEDDave may have to get a 16F676 and one of us build the hex for that...