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Serial I/O Problem — Parallax Forums

Serial I/O Problem

edgellmhedgellmh Posts: 85
edited 2008-05-25 20:40 in General Discussion
I am trying to get serial port communications going using HyperTerminal and a PDB board with its MAX232 driven DB9 serial port. I have tried Jon Williams' PC_PORT16.SXB code and nothing whatsoever happens at the terminal. With my own code (attached) I get correct PDB responses to my input detected by the behavior of LEDs connected to a 74HC595 but nothing shows up on HyperTerminal, either as echoes of my input or in response to TX_BYTE. HyperTerminal is set up as 9600 8-N-1 with auto detect and no flow control. The Print Echo icon is grayed out in the terminal. There must be something wrong with the terminal setup but nothing I have tried yet seems to help. Sometimes I see some echoing for my first one or two characters but nothing after that. I am running with the SXKey in place.

marshall hall edgell
SXB
SXB
Simple Serial Test 02.SXB
5K

Comments

  • edgellmhedgellmh Posts: 85
    edited 2008-05-25 20:40
    Okay, I had the output byte misidentified. My code is working now.

    marshall
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