Hi,
Writing a simple VB6 program to read the 26 byte data from the OI/RC view the Dashboard port. OI is easy to read and works well. RC uses three interlaced data packets.
How do I differentiate between the three data packets for the RC?
My attachment shows three packets. Depending upon when I open and close and open again, the packets move around.
Thanks,
Chuck
Have you read IFI’s Doc yet? it tells you everything but how to differentiate between RC and OI packets.
If you want, I’ll send you a VB control to read and interprete the data.
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Hi,
I read the spec last Friday however the means to differentiate between the frames was not explicit. However, after posting this message last Friday, I reread it a few times and finally understood the stuff that read [CTRL_C Bit 7=0, …]. Did some bit operations first thing this morning and everything is working fine now. 
So, it is necessary to read two specific bits in order to figure out which of the 3 frames are being viewed.
Byte 8, bit 4 and Byte 12, bit 7. The frames are then recognized by the following pattern respectively.
Frame 1 = 0,0
Frame 2 = 1,0
Frame 3 = 1,1
The code to read the values went like this. sRec stores the string of 26 characters.
nA4 = Asc(Mid(sRec, 8, 1)) And &H10 'byte 8, bit 4
nC7 = Asc(Mid(sRec, 12, 1)) And &H80 'byte 12, bit 7
Astronouth…I appreciate the offer for the ‘control’ to do this for me, but the fun in all of this programming is to write the code myself.
Thanks,
Chuck
it’s open source. An ActiveX control. I can almost garentee you’re already using one. The MSCOMM control.