Adding A/Ds to 12F683 in Oshonsoft

camerart · Jan 29, 2014

Hi,

I want to add a couple of Analogue inputs to a 12F683 Oshonsoft program. How do I set up the code (ADCON0, ANSEL, ADCON, ADON or whatever) for this please? I will use AN1 and AN2. I'm happy with similar examples!

Code attachment:

Ian Rogers · Jan 29, 2014

Have you enough pins?... If you set the ANSEL reg up you can just call ADCIN channel, variable

ADCIN 0,adcres1
ADCIN 1,adcres2
ADCIN 2,adcres3

ericgibbs · Jan 29, 2014

This will run in Oshon

Code:

Define SIMULATION_WAITMS_VALUE = 1

AllDigital


Dim an0 As Word
Dim an1 As Word

ANSEL = 0x03
ADCON0 = 0x85

loop:
Adcin 0, an0
Adcin 1, an1
Goto loop

End

You will find this external module useful for Analog, its named 16F, but it will run on 12F

https://www.electro-tech-online.com/blog-entries/oshonsoft-simulator-16fanalog3-external-module.113/

This second module has more options.
https://www.electro-tech-online.com...-simulator-16fanalogramp3-external-modul.115/

camerart · Jan 29, 2014

Ian Rogers said:
Have you enough pins?... If you set the ANSEL reg up you can just call ADCIN channel, variable

ADCIN 0,adcres1
ADCIN 1,adcres2
ADCIN 2,adcres3

Thanks Ian,

I only need two pins. I'm not advanced enough to know how to set such things as ANSEL.

Camerart

camerart · Jan 29, 2014

ericgibbs said:
This will run in Oshon

Code:

Define SIMULATION_WAITMS_VALUE = 1 AllDigital Dim an0 As Word Dim an1 As Word ANSEL = 0x03 ADCON0 = 0x85 loop: Adcin 0, an0 Adcin 1, an1 Goto loop End

You will find this external module useful for Analog, its named 16F, but it will run on 12F

https://www.electro-tech-online.com/blog-entries/oshonsoft-simulator-16fanalog3-external-module.113/

This second module has more options.
https://www.electro-tech-online.com...-simulator-16fanalogramp3-external-modul.115/

Thanks Eric,

This works fine.

Can you tell me why you have 'ALLDIGITAL' early in the code, when it has analogue pins?

Cheers, Camerart.

Ian Rogers · Jan 29, 2014

ericgibbs... He doesn't need the alldigital command..( I know it won't make any difference to your code as you re-set the adcon0 reg...)

camerart · Jan 29, 2014

Ian Rogers said:
ericgibbs... He doesn't need the alldigital command..( I know it won't make any difference to your code as you re-set the adcon0 reg...)

So, I'm guessing that the later orders over ride the earlier ones?

Thanks Ian.

Ian Rogers · Jan 29, 2014

camerart said:
So, I'm guessing that the later orders over ride the earlier ones?

Thanks Ian.

Kinda... But the control on the little pic12's is in the ANSEL reg not the adcon0 reg

ericgibbs · Jan 29, 2014

camerart said:
Thanks Eric,

This works fine.

Can you tell me why you have 'ALLDIGITAL' early in the code, when it has analogue pins?

Cheers, Camerart.

hi,
Its a 'leftover' from a program, I cut n pasted the snippet which I posted for you... ignore it.
E

camerart · Jan 29, 2014

ericgibbs said:
hi,
Its a 'leftover' from a program, I cut n pasted the snippet which I posted for you... ignore it.
E

Thanks Both,

On Eric's code that he posted there is both ANSEL and ADCON0 and that bit worked ok.

I have added that to a previous TIMER code, and it fails at the LOOP.

See attached:

ericgibbs · Jan 29, 2014

hi,
You cannot have gled for both.

Code:

Dim an0 As Word
Dim an1 As Word
Dim gled As Bit
Dim t As Word

''Symbol gled = GP2

You have also remmed out the conditional IF...ELSE statement subr

Code:

'If an0 >= 100 Then
    gled = 1
    WaitMs 10
    'Else
    gled = 0
    WaitMs 10
'Endif

camerart · Jan 29, 2014

Eric,

I remmed out the Gled for a simpler (desperate:}) code.

Also I chose the SYMBOL option, and I found another mistake, I had it as Symbol gled 'AS' GP2 instead of equal.

Anyway, It's flashing now, thanks a lot.

Camerart.

ericgibbs · Jan 29, 2014

hi Camerart,
I would suggest that you tidy up your header layout on the program, there are 'bits' everywhere, makes it hard to follow.
Eric

camerart · Jan 30, 2014

ericgibbs said:
hi Camerart,
I would suggest that you tidy up your header layout on the program, there are 'bits' everywhere, makes it hard to follow.
Eric

Hi Eric,
You might remember helping me with a TIMER program last week? This is an add on to it, and will use a timer in conjunction with the A/Ds. So both programs have been merged. I don't fully understand the 'bits' in the header, even though I spend quite a time trying in the data sheets. I wouldn't dare try changing them, in case it has repercussions, that I again wouldn't understand.

ericgibbs said:
hi Camerart,
I would suggest that you tidy up your header layout on the program, there are 'bits' everywhere, makes it hard to follow.
Eric

ericgibbs · Jan 30, 2014

hi Camerart,
Look at Pauls code for a way to layout the Header
https://www.electro-tech-online.com/threads/rotary-encoder.139838/
Eric

camerart · Jan 30, 2014

ericgibbs said:
hi Camerart,
I would suggest that you tidy up your header layout on the program, there are 'bits' everywhere, makes it hard to follow.
Eric

Hi,

I was looking at the header layerout and noticed (e,g,
T1CON = %00110000 '0x30 = 8:1, so thats 1MHz/8= 125KHz or 8uSec
T1CON.T1OSCEN = 1
T1CON.TMR1ON = 1
T1CON.TMR1CS = 0

Am I correct, that at the 'T1CON' line '.T1OSCEN-TMR1ON and TMR1CS' can be 'catered for by changing the %00000000 bits?

Cheers, Camerart

ericgibbs · Jan 30, 2014

hi,
Yes you can load T1CON in one go, if you wish
Either by Bits or a Byte value.
E

camerart · Jan 30, 2014

ericgibbs said:
hi Camerart,
Look at Pauls code for a way to layout the Header
https://www.electro-tech-online.com/threads/rotary-encoder.139838/
Eric

Hi Eric,
Paul's code is a bit long for me to follow, but I've tried to shrink mine and tidy it up the best I can, hope you can read it easier.
Camerart.

camerart · Feb 1, 2014

Hi,

Since I posted the 'tidied up' program I've slipped back down the well. I must have altered something, but I can't find the problem. Should I go back to before I changed it?

I added a led to a spare pin, as a kind of diagnostic help, but I couldn't get it to work. So I changed the LOOP as a simple LED toggle. I have added a LED to the 3 spare output pins and a pause only, but PINs 2 and 3 don't seem to work.

Can anyone help please? Code attached:

Camerart.

ericgibbs · Feb 1, 2014

hi,
It works for me in simulation,
You have this remmed out Define SIMULATION_WAITMS_VALUE = 1 'SIMULATION ONLY

So the sim will take ages to run.
E

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