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  1. #1
    Join Date
    Jul 2010
    Posts
    12

    Default HSERIN/OUT Dec to HEX convertion problem..

    Hello,

    My project uses a 16F627 to poll a Thunderbolt GPS Disapplined Oscillator for status via its
    RS232 port. The TBolt GPS data packets are transmitted in decimal words. Unfortuantely, this
    causes problems for most terminal displays will display these decimal numbers as ASCII and
    ASCII special characters (Bell, SOH and some unknown, etc). I would like to make the conversion
    using HSERIN and HSEROUT if possible.

    With all the knowledge on this forum, someone will undoutedly point out my problem.

    Thank you,

    John N6VMO

    Here is my theory test code:

    INCLUDE "BS2DEFS.BAS"

    DEFINE HSER_TXSTA 24H
    DEFINE HSER_RCSTA 90H
    DEFINE HSER_BAUD 9600
    define HSER_SPBRG 25

    char Var BYTE ' Storage for serial character
    cnt Var Byte ' Storage for character counter

    TRISB = %11001111 ' Set PORTB.4,5 to outputs
    PORTB = 0 ' Turn off LEDs
    cnt = 0 ' Zero character counter

    mainloop:
    Hserin [dec char] ' Get a char from serial port
    Hserout [hex char] ' Send char out serial port

    'Debug status
    cnt = cnt + 1 ' Increment
    PORTB = cnt << 4 ' Send count to LED
    Goto mainloop ' Do it all over again

    End

  2. #2

    Default

    If I understand correctly that each input character is in the range of zero to 9, then just add 48 to the outgoing character, this gives the correct ascii character to display on your terminal. so try:

    You get 7 = Bell, add 48 = 55 = 7 see link below

    http://www.asciitable.com/


    HSERIN char
    HSEROUT char+32

  3. #3
    Join Date
    Jul 2010
    Posts
    12

    Default

    Quote Originally Posted by aerostar View Post
    If I understand correctly that each input character is in the range of zero to 9, then just add 48 to the outgoing character, this gives the correct ascii character to display on your terminal. so try:

    You get 7 = Bell, add 48 = 55 = 7 see link below

    http://www.asciitable.com/


    HSERIN char
    HSEROUT char+32
    Hi, I am receiving ASCII data bytes anywhere from 0 to 255. The results can display any
    ASCII character and Extended ASCII character from 0 to 255. Example: 142 172 2 16....I need to
    convert them into 8E AC 02 10...

  4. #4

    Default

    Not sure why you have dec on hserin, have you tried it with just HSERIN CHAR ?, other line stays the same

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