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Sending and receiving hex on HD410

Michael / ampex351

March 10, 2011 05:49

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Hello: I am using a HD-8x8 board from HMS Electronics. I have 6 pushbuttons connected to the inputs, and 6 LED's connected to the outputs. The hardware tests out fine. The problem I am having deals with the fact that the HMS board doesn't speak ASCII. For example, when button #1 is pressed, it sends out <h01>, button 2 sends <h02> button 3 sends <h04>, button 4 sends <h08> etc. To turn on the outputs, the same hex data must be sent e.g. sending <h01> turns on output 1, <h10> (decimal 16) turns on output 5. So, I need to find a way of getting a HD410 to send the hex values to turn on the lights, while at the same time receiving hex bytes to control the playing of the videos. Any suggestions would be much appreciated. Thanks again,

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8 comments

• 0
  
  RokuLyndon March 10, 2011 09:12

  
  
  I thought on the 8x8, that all 8 inputs were passed through to gpio, and only the outputs required hex. Is that not the case?
  
• 0
  
  Michael / ampex351 March 10, 2011 11:23

  
  
  " thought on the 8x8, that all 8 inputs were passed through to gpio, and only the outputs required hex. Is that not the case?
  
  Hello Lyndon:
  
  HNMS does have such a product that uses the GPIO for inputs, and serial for the outputs.  However the model I have is all serial, both in and out.  I've used the <send serial byte> to send from the HD410 to the HMS, but I'm still having a problem getting the HD410 to accept bytes from the HMS.  As i mentioned, the HMS is hard-coded to only respond to non-printing characters, sending <h01>, <h02>, <h04>, <h08>, <h16>, <h32> <h64> and <h128> corresponding inputs 0 through 7 on the HMS board.
  
  Thanks for your attention,  Michael Callahan / Museum Technology
  
• 0
  
  RokuLyndon March 11, 2011 00:52

  
  
  Please send me the autorun from brightauthor that you are using. I can modify the autorun to receive bytes. I can also tell you where to make the changes in the autorun as well. if you make the following changes, to your autorun.brs, your unit will listen for bytes. The bytes received are received as their decimal values. For hex values below 10, they are the same as decimal.
  
  SO, to receive h02, you would just enter "2" as the serial event coming in. no quotes.
  
  1. Change the line before "return" in the function below from SetLineEventPort to SetByteEventPort.
  

  Sub CreateSerial()
  
     m.serial = CreateObject("roSerialPort", 0, m.serialPortSpeed)
     if type(m.serial) <> "roSerialPort" then print "Error creating roSerialPort" : stop
     ok = m.serial.SetMode(m.serialPortMode)
     if not ok then print "Error setting serial mode" : stop
     m.serial.SetByteEventPort(m.msgPort)
     
     return
     
  End Sub

  
  
  
  2. Change the type of message from roSTreamLineEvent to roStreamByteEvent
  
  

         elseif type(msg) = "roStreamByteEvent" then
         
             eventData = m.HandleStreamLineEvent(msg, eventData, transitionList)
  

  
  
  
  3. Finally, change from

  serialEvent$ = msg.GetString()

  to the following:
  
  

             serialEvent$ = mid(str(msg),2)

  
  
• 0
  
  Michael / ampex351 March 11, 2011 03:43

  
  
  "Please send me the autorun from brightauthor that you are using. I can modify the autorun to receive bytes. I can also tell you where to make the changes in the autorun as well. if you make the following changes, to your autorun.brs, your unit will listen for bytes. The bytes received are received as their decimal values. For hex values below 10, they are the same as decimal.
  
  SO, to receive h02, you would just enter "2" as the serial event coming in. no quotes.
  
  Hi Lyndon:
  
  Thanks very much for the reply.  I edited the autorun per your example, and it's getting close, but not quite there.  Upon boot, it goes to the correct image, but still isn't responding to the serial buttons.  Connecting the 410 to RealTerm, I can get some files to play by sending ASCII with a CR, but it doesn't respond to straight hex.  When I can get it to play via RealTerm, it does send back <00> upon video end, which is what it should be doing.
  
  I hope I didn'tg make some stupid error in editing the file.  I'm emailing you the BA file, <project_2>
  
• 0
  
  Michael / ampex351 March 11, 2011 03:49

  
  
  Hello Lyndon:
  
  Many thanks for the reply.  I edited the autorun file per your example.  Upon boot, the correct slide is displayed, but it will still not respond to signals from the HMS serial board.  Looking at the HMS board output with RealTerm, it is sending out what is expected:  <00> for button 1,  <01> for button 2 etc.  
  
  Hooking the HD410 up to RealTerm, I can get it to play the files, although not reliably.  Sending straight hex doesn't work, but when I send ASCII with a CR is sometimes works.
  
  I'd like to take you up on your kind offer, and am emailing you the BA file.
  
  Thanks again,  Michael
  
• 0
  
  Michael / ampex351 March 11, 2011 04:13

  
  
  hello Lyndon:
  
  I'm not sure how to send you the autorun file.  Can I do it within the forum, or should it be a separate email attachment?
  
  Thanks,  Michael
  
• 0
  
  RokuLyndon March 11, 2011 05:36

  
  
  I sent an autorun for you to test
  
• 0
  
  Michael / ampex351 March 11, 2011 08:23

  
  
  

  by RokuLyndon » Thu Mar 10, 2011 5:36 pm
  
  I sent an autorun for you to test

  
  
  
  Thanks Lyndon.  I'll be testing it this eveing.  Thanks again,  Michael