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fnovoac
Joined: 01 Oct 2005
Posts: 12
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 07 Oct 2005 4:05 keyboard with pic |
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I found a diagram to connect a PS/2 keyboard to a 16F84A PIC with source code in assembler but I program en PICBASIC -  - does anybody have some code in basic for doing that???
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kieennx
Joined: 08 Jul 2005
Posts: 30
Helped: 1
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07 Oct 2005 5:31 at keyboard picbasic |
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You should study about the algorithm first, then try to write it by another language (ex. C, BASIC...)
Bets regards,
Kieennx.
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khongai
Joined: 20 May 2005
Posts: 245
Helped: 5
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07 Oct 2005 6:51 ps2 keyboard pic microchip asm |
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reference this :
http://www.electronic-engineering.ch/microchip/projects/keyboard/morse_2x/morse_2x.html
http://www.computer-engineering.org/
http://www.brouhaha.com/~eric/pic/
http://www.iptel-now.de/HOWTO/PIC/pic.html
and search with google/ yahoo
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fnovoac
Joined: 01 Oct 2005
Posts: 12
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07 Oct 2005 6:57 16f84 keyboard ps2 |
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I guess I forget to say that i'm not an expert with pic basic. I studied the protocol an the level signals but it's difficu to me to do some thing in pic basic, for exmaple:
i have to sense the estate of a pin (PORTB.5) based on interruptions (PORTB.0) and set to a byte variable, the data consist on 11 bits, first bit is always low, then i have 8 bits of data and 2 more bits no necessary to get the data. I need to read that bit and set to the byte variable:
variable : b7 b6 b5 b4 b3 b2 b1 b0
fisrt bit read -> b0
second bit read -> b1
third bit read -> b2
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eight bit read -> b7
then convert that value to hex
sorry for my porr english, i speak spanish  so it's difficult to me explain mys ideas
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artem
Joined: 22 May 2003
Posts: 1652
Helped: 91
Location: Turan
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10 Oct 2005 18:44 ps2 pic basic |
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| Atmel has nce AN for that . Look for the AVR micro application notes section .
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Google
AdSense
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10 Oct 2005 18:44 Ads |
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FSio
Joined: 27 Nov 2003
Posts: 29
Helped: 2
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10 Oct 2005 20:54 keyboard ps2 protocol pic |
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fnovoac,
I make some routines to controlling keyboard AT
They are run on PIC18Fxxx, because my application need it, but the AT keyboard can run on 16F627 similar to PIC16F84.
Luck!!
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