Interfacing AT-PS2 Keyboard with PIC

[fnovoac]

keyboard with pic

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???

 

[kieennx]

at keyboard picbasic

You should study about the algorithm first, then try to write it by another language (ex. C, BASIC...)
Bets regards,
Kieennx.

 

[khongai]

ps2 keyboard pic microchip asm

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

 

[fnovoac]

16f84 keyboard ps2

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
.
.
.
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

 

[artem]

ps2 pic basic

Atmel has nce AN for that . Look for the AVR micro application notes section .

 

[FSio]

keyboard ps2 protocol pic

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!!