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Old 02-26-2013, 03:28 PM   #1
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Default MSPNP GEN1 Connection Issues

Here is a copy of the e-mail i sent to DIY. It will explain my issue.

"I recently built my 96 1.8 Miata and Turbo'd it. I got ahold of a Gen 1 MSPNP for the tuning and have dealt with the same setup before on another miata. I had no issues like this before. Here's what im getting.

MSPNP has power and displays the power LED on the board with the key on.

Serial to S-video cable continuity checked fine.

Serial to USB adapter has the latest drivers installed and I assosciated it with COM2.

Loopback checked the adapter with HyperTerminal and it checks fine.

When plugged in with Key on and running portcheck.exe it comes back with no connection made under either Baud Rate. (granted it should only come up under 9600 on the GEN1)

MegaTune 2.25 will not read it either. (obviously)

I am running Windows 7 64bit.

Please let me know if you have any ideas i have spent a week or so online trying to find any information on forums, MS websites, Manuals, everything. I just am at the giving up point and really cant afford to get another computer.

Thanks in advance for any information you can give."

Please let me know if you have ANY ideas. I have sifted through every thread on every forum i could get my hands on.
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Old 02-26-2013, 05:42 PM   #2
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Have you changed anything as far as the computer goes?

Did it work the same with the current computer and the current ecu in a different car?
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Old 02-26-2013, 05:47 PM   #3
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No this is a new computer and mspnp. I was just mentioning i have dealt with the gen1 in the same setup as i have. When i used a gen1 on a friends car it was on a laptop running xp.
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Old 02-26-2013, 05:51 PM   #4
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Have you tried using a serial cable? do you have one handy?
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Old 02-26-2013, 05:55 PM   #5
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I dont have a serial port on my computer. Im using the svideo to serial to serial/usb converter.
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Old 02-26-2013, 06:02 PM   #6
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Did the cable come with the unit?
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Old 02-26-2013, 06:03 PM   #7
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Yes it did. And it is the same cable and adapter from your website.
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Old 02-27-2013, 03:19 AM   #8
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BUMP!!! It's 1 something A.M. Ive had a few drinks. And i've been trying everything in my power to get this thing to connect to my laptop. CALLING ALL COMPUTER MASTERMINDS!!! PLEASE HELP ME!!! Lol.

Heres what ive been staring at for over an hour:
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MSPNP GEN1 Connection Issues-photo-3.jpg  
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Old 02-27-2013, 09:20 AM   #9
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Id say go out, and get a serial cable.
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Old 02-27-2013, 09:51 AM   #10
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Perform the serial diagnostics steps that start with step 7 on this page:
Megasquirt Serial Setup

Then post your results from tests A, B, and C.
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Old 02-27-2013, 02:26 PM   #11
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Heres what i get from trying to load the firmware:

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MSPNP GEN1 Connection Issues-firmware.jpg  
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Old 02-27-2013, 02:29 PM   #12
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I've done the adapter loopback and it checks out.

I dont get anything back from test b and i havent tried test c yet. I will do so later today when i have some free time.

I just want to extend a big thank you to those of you attempting to help me out. It means alot.
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Old 02-27-2013, 03:22 PM   #13
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Ok so I did the tests Heres the results:

Test A: Loops back anything typed.

Test B: Nothing

Test C: Nothing

One thing though. I only get one window in Mini-Terminal and it doesnt seem to be functioning properly. I ended up using HyperTerminal for the tests. Heres a picture of MiniTerminal how it shows up on my computer.

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MSPNP GEN1 Connection Issues-miniterminal.jpg  
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Old 02-27-2013, 04:53 PM   #14
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So test B did nothing?
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Old 02-27-2013, 05:10 PM   #15
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Try reloading the firmware, but this time, use the boot jumper. If that still doesn't work, please post a screen shot of the error message this time around.
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Old 02-28-2013, 12:32 AM   #16
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Tried it with the boot jumper and got the same response as before. Literally the exact same as the earlier screenshot i posted. I'm guessing since it says it expected the "Boot>" prompt from the ecu and its getting "". Then that means either theres a communication problem or there is no coding at all on the ecu. I also got ahold of a windows xp laptop and its doing the exact same thing.

Is there anything else to try or is it time to send it to you guys and let you do a diagnostic on it?
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Old 02-28-2013, 09:47 AM   #17
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Take the lid off and perform one more loop back test, but this time by bridging pins 2 & 3 on the DB9 header of the V3.57 PCB. That will rule out a bad cable vs an ECU problem.
If it passes this test, then there is an issue with the V3.57 PCB. If it fails, there is a problem with the cable or its connector.
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Old 02-28-2013, 09:57 AM   #18
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the only db9 header i have is on the adapter? unless you mean the un soldered pins on the board for a serial connection. Could you post a picture or descripe what to jumper?
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Old 02-28-2013, 10:44 AM   #19
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That's right, we mean the soldered pins on the board for the serial connection. It's under the big black capacitor.
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Old 02-28-2013, 02:43 PM   #20
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Ok i just did the loopback by jumpering the serial solders on the board and it checks out. So am i screwed or am i screwed? lol
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