UART commn using parallel port

Feb 06, 2004 3 Replies
H

I am programming the ATMEGA128 using the parallel port of my PC. The pins from the programmer go to the UART RX / TX of the MCU for downloading the program. I want to send debug info from the MCU to the PC using the same UART. I have code with me to send data using this UART .



--The question is that is there a way that the PC can intepret this data and display it correctly. I am using redhat 9.



-- How do i do this? Is there some terminal software for linux.



-- *Is it at all possible that the parallel port can recieve data from the UART of the ATMEGA128 ? * Thanks for ure time


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H

What the parallel port, for Pete's sake? The serial port should have been by far the more obvious choice, and easier to use, too --- just run a terminal program like good old Kermit and *see* what comes out of that port, without any hassles.

Hans-Bernhard Broeker (broeker@physik.rwth-aachen.de) Even if all the snow were burnt, ashes would remain.
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L

Perhaps because the ISP protocol is synchronous?

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A

Add some circuitry to switch between using the parallel port for downloading and a RS232 buffer connected to the standard serial port. Writing a software UART device that can be used with software expecting to talk via a UART would be far to much work for very little advantage.

Regards Anton Erasmus

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