Okie dokie. The serial data logger is temorarily abandoned.
There is no way to make a serial port in a computer read a bitrate of 93750, especially with 9 bit bytes.
So, there are 2 options. 1) some kind of signal converter. This seems to be very difficult. But I have wondered whether I could not set the bit rate to 128kbit, and if it would still work at least 90% of the time.

Next, responding to the DME.
By default, on startup, the DME sends a byte pattern, 0xFF (or something similar to that) to the diagnostic plug. Unless you respond to the DME (which the germans didn't give you a wire to do this on), it then shuts off the diagnostic read-out.
So, you solder a wire into the DME (I think I have hte pin # somewhere, just not with me), and send it back 0XEE (could be wrong there too, have it written down, just not with me), and it says 'ok, now tell me what you want!'.
So, to get any data, you have to poll the DME constantly. That makes it much more complicated, because then you have to talk back to it wiht 9 bit bytes at 93750bps.

My only other thought, is that the 93750 bit rate is determined using 9 bit bytes, and it is actually a common bitrate that has been misrepresented to confuse people.

So, the other choice. Change the DME chips. This has been done with success. You can copy the DME program to another chip, then change parts of it, so it will automatically broadcast the data you want, at a bit rate/format you want.
However, I do not have an EEPROM burner to try this out with.
So, I am still investigating finding a way to read the 93750 bit rate, and soldering a wire into my DME.
I think if I could complete this, I could just copy the program for people, and explain where to solder, making this available to everybody.


Hopefully I come up with something soon.

Nice :)

For a moment i thought this strange bitrate was a joke. Well making a copy of rom is possible nly for electronics hobbyist, not my case. hope someone will be able to make a move with this idea.

The diag plug on mine shows nothing, 0v anywhere on the pins and more than that i have one ecu from the ages , not even able to show errors with the led just because instead of 5 they are 3 connected points where there is 12v and grounding but nothing else :mad:

So i decided to try an alternate way even if it's pain for me but no choice, i will try to find and build a simple analog / digital converter able to send the whole informations through the serial port.
I really can't make wires running everywhere in the car to get in touch with the pc in the rear of the car :D