Convert integer to a hex value then write serial

Discussion in 'Pascal Logic Code Examples' started by Pie Boy, Nov 21, 2012.

  1. Pie Boy

    Pie Boy

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    Hi All virgin post hope its easy to understand

    I am using a 5500paca to write serial to a integra av receiver

    Code:

    {this code gets a c-bus group address level converts to percent and then writes the appropriate % to serial to an Integra av receiver}

    {Initialisation}

    OpenSerial(1, 1, 9600, 8, 1, scNoFlowControl, scNoParity);

    { constants }
    S:string;

    { variables }
    Volume : integer; { stores c-bus group address level }


    { module code }

    {if Group address has changed then write serial }

    if haschanged (GetLightingLevel(Group01) ) then
    begin
    Volume := LevelToPercent(GetLightingLevel(group01));
    format(s, '!1MVL', Volume:1, #13);
    Writeserial(1, s);
    end;

    my problem being that the integra reciever is looking for a hex value for the volume string which looks like this '!1MVL00'(CR/#13) for 0% the last two digits determine the volume so '00' to '64' in hex

    how do i convert the volume integer into hex before writing the serial port

    any ideas?
     
    Pie Boy, Nov 21, 2012
    #1
  2. Pie Boy

    NickD Moderator

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    I have an Onkyo receiver I'm controlling from logic the same way.. here's a few of the relevant snippets from my code.
    Code:
    {constants}
Z1VolUp = '!1MVLUP';
Z1VolDn = '!1MVLDOWN';
Z1GetVol = '!1MVLQSTN';
Z1VolSet = '!1MVL';

{variables}
StrWorking : String;
IntWorking : Integer;
Z1Volume : Integer;

{module}
...
      IntWorking := GetIntSystemIO("IntSysZ1Vol"); {get the level}
      OutString := Z1VolSet; {set the first part of the command string}
      IntToHexString(IntWorking,0,StrWorking); {set the variable part of the command }
      Append(OutString,StrWorking); {append the two}
      Z1Volume := IntWorking;

...
  if (OutString <> '') then
    begin
      {If we have something to send, send it, otherwise go to the
      receive state to see if we have received an unsolicited notification}
      WriteSerial(1,OutString);
      WriteSerial(1,#13);
      CommTimeout := 1;
    end;
    Nick
     
    NickD, Nov 22, 2012
    #2
  3. Pie Boy

    Pie Boy

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    Cheers NickD Got it sorted
     
    Pie Boy, Nov 25, 2012
    #3
  4. Pie Boy

    Pie Boy

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    Feedback

    Hi NickD

    I have finished writing my modules for my Integra receiver
    would you be keen to review my code and give me some feedback??
     
    Pie Boy, Jul 7, 2014
    #4
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