Hi, Im trying to buid a circuit which monitors several switches and
sends the result to the AT-keyboard input on my PC.
Ive heard that only two lines of a pic can be used to create
a full bi-directional interface but all the examples I can find on google
use 4 lines. Does anyone have any clues or examples how I can
use only 2?
Also, Ive tried a send-only version of the circuit, which sends scan
codes for a singe letter once every second or so.
The PC receives the first character, but then only beeps at every subsequent transmission from my PIC.
Is this even possible, or do I need full bi-directional communication
for this simple test?
Thanks very much,
Rob.
sends the result to the AT-keyboard input on my PC.
Ive heard that only two lines of a pic can be used to create
a full bi-directional interface but all the examples I can find on google
use 4 lines. Does anyone have any clues or examples how I can
use only 2?
Also, Ive tried a send-only version of the circuit, which sends scan
codes for a singe letter once every second or so.
The PC receives the first character, but then only beeps at every subsequent transmission from my PIC.
Is this even possible, or do I need full bi-directional communication
for this simple test?
Thanks very much,
Rob.