TRIS E setting for 18F2550

Hi Guys,

I want to use Pin 1 (TrisE/MCLR input) as a digital input and having problems trying to set TRISE.3 as a digital input.

I get error [113] symbol not previously defined.

I've set CONFIG MCLRE = OFF in the .inc file to disable MCLR, but that doesn't help.

I know it's simple but just can't figure it out.....

Code:

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    ' SETUP THE PORTS
    ADCON1 = $0F   
    SSPCON1 = 0
    CMCON = $07   
    TRISA = $FF
    TRISB = %00000001
    TRISC = %00000001
    TRISE = %11111111

---

Cheers
Squib

Quote:

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Originally Posted by Squibcakes

Hi Guys,
I want to use Pin 1 (TrisE/MCLR input) as a digital input and having problems trying to set TRISE.3 as a digital input.
I get error [113] symbol not previously defined.
I've set CONFIG MCLRE = OFF in the .inc file to disable MCLR, but that doesn't help.
I know it's simple but just can't figure it out.....
Cheers
Squib

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If you program and then do a readback of the '2550, is the MCLRE bit still set or reset?
Sounds to me like the CONFIG isn't being set in the PIC itself.

Quote:

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Originally Posted by Squibcakes

I've set CONFIG MCLRE = OFF in the .inc file to disable MCLR, but that doesn't

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Something to try ...try this in your .inc file

Code:

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      __CONFIG    _CONFIG3H, _PBADEN_OFF_3H & _MCLRE_OFF_3H

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EDIT - In the above, I added the "_MCLRE_OFF_3H" to the already exisiting __CONFIG _CONFIG3H line of the inc file

Ok thanks guys sussed it.

I was right in the fist place to use CONFIG MCLRE = OFF , the only thing is that I didn't need to use TRISE = ....., This pin is input only anyway.

Cheers
Squib