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Tharon Hall
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| Setting INT_IO2 for 16F88 |
 Posted: Tue Oct 21, 2003 5:40 pm |
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 So how do I set the config bits for the oscillator to INT_IO2 on a 16F88 when it is not one of the #fuses??? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue Oct 21, 2003 6:07 pm |
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I believe you should use this fuse option:
INTRC_IO
It sets the Fosc bits to: 100
The 16F88 data sheet describes this option as:
100 = INTRC oscillator; Port I/O function on both
RA6/OSC2/CLKO pin and RA7/OSC1/CLKI pin |
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Guest
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| Posted: Wed Oct 22, 2003 6:25 am |
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| PCM programmer wrote: | I believe you should use this fuse option:
INTRC_IO
It sets the Fosc bits to: 100
The 16F88 data sheet describes this option as:
100 = INTRC oscillator; Port I/O function on both
RA6/OSC2/CLKO pin and RA7/OSC1/CLKI pin |
Page 35 that discusses the various modes calls this mode "INTIO2". The #fuses comments in 16F88.h do not define "INTIO2", "INT_IO2" nor "INTRC_IO". "INTRC_IO" is what I use for the 16F819.
If it works, it wouldn't be the first time that a fuse setting wasn't in the .h file. grrr..... |
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Guest
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| Posted: Thu Oct 23, 2003 1:18 pm |
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| Anonymous wrote: | | PCM programmer wrote: | I believe you should use this fuse option:
INTRC_IO
It sets the Fosc bits to: 100
The 16F88 data sheet describes this option as:
100 = INTRC oscillator; Port I/O function on both
RA6/OSC2/CLKO pin and RA7/OSC1/CLKI pin |
Page 35 that discusses the various modes calls this mode "INTIO2". The #fuses comments in 16F88.h do not define "INTIO2", "INT_IO2" nor "INTRC_IO". "INTRC_IO" is what I use for the 16F819.
If it works, it wouldn't be the first time that a fuse setting wasn't in the .h file. grrr..... |
 Nope. It did not take "INTRC_IO".
I get "unknown keyword in fuses". |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu Oct 23, 2003 1:25 pm |
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| Quote: | Nope. It did not take "INTRC_IO".
I get "unknown keyword in fuses". |
This is for the 16F88 ?
What is your version of the compiler ? |
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DaveThib
Joined: 17 Oct 2004
Posts: 15
Location: New Hampshire USA
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| Thanks |
| Posted: Fri Oct 28, 2005 7:15 am |
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I am using a PIC16F87 and I also want to use RA6 & RA7 as input pins and have been having trouble getting it to work. It is not well documented in the data sheet as well. So I tried setting the fuse INTRC_IO and it worked!!! So thanks a lot for the info! One of the symptoms I had is that the SPI quit working as well. I had everything working using other pins and I needed to make changes and all I changed was those two pins. After my change those pins did not work and the SPI quit sending data.
Thanks again for the help! |
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