pic12F683 , gpio.5 not accessible...

[Archangel]

If you're using Instant Interrupts, the program has to be assembled with MPASM.

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Hi Darrel,
I thought he was as he did not report any compiler errors, doesn't PM choke on DT_I.I.?

[Darrel Taylor]

Yes, PM will definately "choke" on Instant Interrupts.

What I'm saying is that ... since it appears he's using MPASM, he's looking at the wrong configs.
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[flipper_md]

ohh you got a point here!

Modified the __config line and it's definitely using it...

__config _INTRC_OSC_NOCLKOUT & _WDT_OFF & _MCLRE_OFF & _CP_OFF

but then I get
ICDWarn0033: MPLAB ICD 2 does not support programming this device if both the internal oscillator and internal MCLR are selected. You may continue programming, but you are encouraged to cancel, reconfigure your device, and try again.
ICD0200: Operation Aborted (Warning 32).

so basically I assume I cannot have all pins as digital IO.

still It's better for me to set MCLRE on and get GPIO.4/5 working, and leave MCLRE pin alone.
Unless there's a way to bypass this...

It's also great to know which compiler i"m using LOL

edit: setting MCLRE_ON I can get access to GPIO 4 and 5 now..
Still I wonder if it's possible to get rid of MCLR

[Darrel Taylor]

Hmmm, It must be a limitation of your programmer.

I just tested it here with a 12F683 and an meLabs U2 programmer.
It works fine with the internal oscillator and MCLR either ON or OFF.
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[flipper_md]

humm, it means ICD2 (clone) is less powerfull/featured than yours...
would never expected that!

or maybe I can try to let it program the chip anyways, and see what happen.

i'll try it tonight.


Thanks for testing

[mister_e]

Maybe be not less powerful... but has it's own way to work. ICD2 is more a debugger than a programmer. Melabs's one is a Programmer, period.

Cheap alternative.. the endless Microchip's PICKIT 2 suggestion.... which can also be used as a debugger on some PIC.

[sayzer]

Flipper,

How did you set your OSC to work internally at 8Mhz?

OSCCON = %01110000 ' Internal 8MHz osc set speed

I think, it should be OSCCON = %01110001

Did you notice that?

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