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  #376  
Old 10-30-2007, 03:10 AM
Tobi Tobi is offline
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hmm... i think the Plug & Play should be enabled.
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  #377  
Old 10-30-2007, 03:13 AM
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Hi,
Sry i read the message only now.
No problem... I thought you had vanished because under your user info it says you're an unused account marked for deletion!

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Ok the wirring is correct.
Do you use the VCP or the D2XX Direct drivers?
Only the VCP-drivers works.
I used whichever auto-installed. Should be VCP drivers.

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Which OS you use?
Windows XP Tablet PC Edition

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Do you have an additional COM-Port after installing the drivers?
Yes, COM13. I set the comm program to that.

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If the adapter works correctly, you can connect with the RS232-Comm-Tool without an error.

I use the default adapter settings and it works.

I only change the baudrate, parity, databits...... from my additional COM-Port but i think this is not the problem because the monitor-tools setting up the right values.
Darn...
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  #378  
Old 10-30-2007, 03:16 AM
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hmm... i think the Plug & Play should be enabled.
According to the datasheet on the FT232R, Plug+Play should only be enabled for devices which are common and use their own drivers, such as serial-based mice and modems. Enabling plug-and-play will cause the computer to search beyond the USB-TTL adapter and look for further hardware. Since the ECU does not fall into this category, Plug-and-Play should remain disabled (saves some CPU cycles).

I did, however, reprogram the cable (just now, not prior to testing) to set it to "self-powered" mode. This causes the +5V Out line to become dead. Since we are not connecting current to our ECUs, I feel this is more efficient. It still does not fix my problem however.
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  #379  
Old 10-30-2007, 03:36 AM
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Correction!

Because I had previously used a USB-to-Serial device, my computer confused the generic driver with the real driver for this specific device. By clicking "update driver" I have changed over. I will go test now.
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  #380  
Old 10-30-2007, 03:43 AM
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Yes that could be the problem. Uninstall this existing drivers from your old adapter.
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  #381  
Old 10-30-2007, 04:04 AM
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That fixed the problem of the adapter working improperly. It now operates as it should. Thank you for the reminder to check my drivers, Tobi!

But I am sorrowful to report that this adapter, despite being self-powered, succumbs to the "92 Bug." In fact, it succumbs worse than our original adapter!

If you connect and send "45 12 34 00" to query the transmission, it works fine and dandy. Nothing wrong there.

If you connect and send "78 12 34 00" to query the engine, nothing happens. Nothing at all.

I will continue trying some things in the mean time.
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  #382  
Old 10-30-2007, 04:15 AM
Tobi Tobi is offline
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No problem

But its curious that the 0x78 dont work.
I get my values with 0x78 and stop with 0x12.
This works perfect.
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  #383  
Old 10-30-2007, 04:21 AM
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What year car do you have?
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  #384  
Old 10-30-2007, 04:25 AM
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That fixed the problem of the adapter working improperly. It now operates as it should. Thank you for the reminder to check my drivers, Tobi!

But I am sorrowful to report that this adapter, despite being self-powered, succumbs to the "92 Bug." In fact, it succumbs worse than our original adapter!

If you connect and send "45 12 34 00" to query the transmission, it works fine and dandy. Nothing wrong there.

If you connect and send "78 12 34 00" to query the engine, nothing happens. Nothing at all.

I will continue trying some things in the mean time.
Well, we now know the solution to that problem! Just build the little upgrade board and add it to your cable, you can power it from the USB side.
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  #385  
Old 10-30-2007, 04:25 AM
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Subaru Impreza GT 2.0 L Turbo MY 10/1996
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  #386  
Old 10-30-2007, 04:26 AM
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Well, we now know the solution to that problem! Just build the little upgrade board and add it to your cable, you can power it from the USB side.
Oho, so that's it? Add the upgrade board and power from USB... sounds good, will do that probably on Wednesday.

By the way, this device lets me vary current from 0-500 mA. The upgrade board would use...?
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  #387  
Old 10-30-2007, 04:27 AM
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Subaru Impreza GT 2.0 L Turbo MY 10/1996
Your car does not have the problem our 1992 SVXs do.
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  #388  
Old 10-30-2007, 04:32 AM
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Ahh OK, but i think its not a problem to start with 0x45.
Write your own tool and it works fine. Its only the different
between 45 and 78? Is this right? Or other problems during the
transfer?
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  #389  
Old 10-30-2007, 04:36 AM
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It works flawlessly, just like our original Serial-TTL box did, when talking to the transmission. This is 0x45.

It does not work at all (which is actually significantly worse performance than our original Serial-TTL box) when talking to the engine. Which is 0x78.

I will have to build the upgrade circuit and wire it in, see what happens. I hope I didn't fry something when I was frantically trying to troubleshoot why the adapter wasn't working!
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  #390  
Old 10-30-2007, 07:46 AM
Calum Calum is offline
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By the way, this device lets me vary current from 0-500 mA. The upgrade board would use...?
Way way under the 500mA limit. Probably 5mA, or something really small. You shouldn't have to change anything.
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