RA6 & RA7 I/O setting on the 16F88

[mackrackit]

We are looking at the same thing.

I picked _INTRC_IO because I think that should make the pins I/Os.

So what was Bruce talking about in Bob's post? The *.inc s are pretty much the same for the 88 and 87.

[peterdeco1]

Hi Everyone. I've only used the 'F88 once. I didn't have any problem with this header file:

OSCCON = $60 'set int osc to 4mhz
ANSEL = 0 'ALL INPUTS DIGITAL
ADCON0 = 0 'AD MODULE OFF
CMCON = 7 'COMPARATORS OFF
TRISA = %SELECT YOUR I/O'S
TRISB = %SELECT YOUR I/O'S
@ DEVICE MCLR_OFF, INTRC_OSC, WDT_ON, LVP_OFF, BOD_OFF, PWRT_ON, PROTECT_ON

[mackrackit]

@ DEVICE MCLR_OFF, INTRC_OSC, WDT_ON, LVP_OFF, BOD_OFF, PWRT_ON, PROTECT_ON

Now I get it...I think.

INTRC_OSC works when using PM as an assembler.

_INTRC_IO works with MPASM.

[PICante]

Hi guys, thanks for the responce!

I have been doing a few projects based on the 16F88 and they all have turned out a success until this time, the first time I needed RA6 & RA7 as I/O’s.

I use MPASAM and the first part of my code looks like this:

define OSC 8

OSCCON =%01110000

@__config_INTRC_IO ‘ added today, compiled OK but no I/O on RA6 or RA7

TRISB = %00000000

TRISA = %11001100

ANSEL = %00000000

CMCON = 7



All the other ports works just fine so.....


Thanks for being here!

[mackrackit]

At least it compiles

Try what skimask suggested
INTRC_CLKOUT
Or compile with PM and use
@ DEVICE MCLR_OFF, INTRC_OSC, WDT_ON, LVP_OFF, BOD_OFF, PWRT_ON, PROTECT_ON

One of them has to work.

[Archangel]

This chip as 2 ADCON registers too

[PICante]

I tried the “INTRC_CLKOUT” with MPASM it compiled well but still no I/O!
I use the 16F88.inc file as is, not edited.

There must be something I miss here; “INTRC_CLKOUT” does not make sense to me (no offence)! The “INTRC_IO” statement seems more logic to me, of curse I might be of the tracks here but that’s how I see it.

Referring to the 16F88 datasheet page 130 way down;

Bit 4, 1-0 FOSC<2:0>: Oscillator Selection bits.

I believe what I need is the fourth alternative:

“100 = INTRC oscillator; port I/O function on both RA6/OSC2/CLKO pin and RA7/OSC1/CLKI pin”.

Or… am I loosing it? (apart from my hair!)



Thanks guys!

[mackrackit]

I tried the “INTRC_CLKOUT” with MPASM it compiled well but still no I/O!
I use the 16F88.inc file as is, not edited.

Have you commented out the shebang line in the inc?
http://www.picbasic.co.uk/forum/show...75&postcount=5