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Hi again,


I have made various tests on my VP30 and VP50 and have no results so far :

-Tried with the bootloader command (hold menu button while truning on the unit) and i couldnt launch the firmware sequence. (by pressing "h" key)

-I then thought it was my keyboard so I tried a new keyboard with a PS/2 adapter : no results.
-Tried to launch the sequence with the digital windows keyboard: no results.
-Tried to configure the KEYBOARD.CNF file to make sure "h" letter on my keyboard would work on Tera Term : no result.

-Tried another ISCAN unit => VP 50. The transfer has failed when 1025 bytes got transfered too and I wasnt able to press "h" on Tera Term when I was forcing bootloader.

-Tried on another computer with a different motherboard and Win7: Same problems again.


Only one solution = the DB9 cable I have is not the right one.

I contacted Ken Nguyen from DVDO and he told me that I needed a straight-through DB9 cable, not a crossover one..


However there is communication between the VPs and Tera Term since the bootloader menu appears when I either turn the Update mode ON or when I force it to appear by pressing MENU button while turning on the unit. Tera Term always have a response from the VP and ask me to proceed .. but i can't go further!


Could my cable partially work for these simple communication function but not when it's supposed to send the update???

Help would be appreciated ! :D
 

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9 Posts
Hi again,


I have made various tests on my VP30 and VP50 and have no results so far :

-Tried with the bootloader command (hold menu button while truning on the unit) and i couldnt launch the firmware sequence. (by pressing "h" key)

-I then thought it was my keyboard so I tried a new keyboard with a PS/2 adapter : no results.
-Tried to launch the sequence with the digital windows keyboard: no results.
-Tried to configure the KEYBOARD.CNF file to make sure "h" letter on my keyboard would work on Tera Term : no result.

-Tried another ISCAN unit => VP 50. The transfer has failed when 1025 bytes got transfered too and I wasnt able to press "h" on Tera Term when I was forcing bootloader.

-Tried on another computer with a different motherboard and Win7: Same problems again.


Only one solution = the DB9 cable I have is not the right one.

I contacted Ken Nguyen from DVDO and he told me that I needed a straight-through DB9 cable, not a crossover one..


However there is communication between the VPs and Tera Term since the bootloader menu appears when I either turn the Update mode ON or when I force it to appear by pressing MENU button while turning on the unit. Tera Term always have a response from the VP and ask me to proceed .. but i can't go further!


Could my cable partially work for these simple communication function but not when it's supposed to send the update???

Help would be appreciated ! :D
Sorry for the Triple Post but poeple might find this interesting :

I tried another computer and to this day, i'm 100% sure that my cable is not accurate to do the update because I simply ( my girlfriend in fact ^^) disassemble it.
In my cable there are only 3 pin connexions made from db9 male to db9 female,
Yes you heard it, 3 wires only.
The VPxx Serial port is a DCE. This means that the VPxx acts as a modem and thanks to a documentation I found on the web, I was able to figure out that the VPxx serial input uses the following RS 232 signals (pins) in order to cummunicate with devices like terminals and/or computers for automation and updates :

- RX
- TX
- RTS
- CTS
- GND


This means that five pins needs to be soldered to make a complete connexion of the VPxx serial port (DCE) and my computer (DTE). My cable only have 3 pins connected bewteen the two ends! It might also explain why Tera Term couldnt send the right input to the DVDO to launche the update sequence through the Bootloader.
What I need now is a full diagram of the original serial cable that DVDO provides with the VPxx series in order to build this cable (can't find my original one).
I found some infos here and there but if someone could confirm a working diagram for a DB9 (M) > DB9 (F) (DTE - DCE STRAIGHT THROUGH CABLE)

Or if someone PLEASE provide me a diagram of the serial cable that he/her used on the VP to complete the updates? Any info about that is welcomed !!!
 

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Sorry for the Triple Post but poeple might find this interesting :

I tried another computer and to this day, i'm 100% sure that my cable is not accurate to do the update because I simply ( my girlfriend in fact ^^) disassemble it.
In my cable there are only 3 pin connexions made from db9 male to db9 female,
Yes you heard it, 3 wires only.
The VPxx Serial port is a DCE. This means that the VPxx acts as a modem and thanks to a documentation I found on the web, I was able to figure out that the VPxx serial input uses the following RS 232 signals (pins) in order to cummunicate with devices like terminals and/or computers for automation and updates :

- RX
- TX
- RTS
- CTS
- GND


This means that five pins needs to be soldered to make a complete connexion of the VPxx serial port (DCE) and my computer (DTE). My cable only have 3 pins connected bewteen the two ends! It might also explain why Tera Term couldnt send the right input to the DVDO to launche the update sequence through the Bootloader.
What I need now is a full diagram of the original serial cable that DVDO provides with the VPxx series in order to build this cable (can't find my original one).
I found some infos here and there but if someone could confirm a working diagram for a DB9 (M) > DB9 (F) (DTE - DCE STRAIGHT THROUGH CABLE)

Or if someone PLEASE provide me a diagram of the serial cable that he/her used on the VP to complete the updates? Any info about that is welcomed !!!
Are you sure that some of the pins on your current cable are not jumpered at or right near the termination point of the cable, possibly creating those 5 points of connection that apparently are needed?

Also, I'm not clear, have you tried a new/fresh straight through serial cable and it has not worked? I ask as they can be purchased for as little as $5 USD.
 

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Are you sure that some of the pins on your current cable are not jumpered at or right near the termination point of the cable, possibly creating those 5 points of connection that apparently are needed?

Also, I'm not clear, have you tried a new/fresh straight through serial cable and it has not worked? I ask as they can be purchased for as little as $5 USD.
The cable was bought brand new in a shop here. I didnt built that one myself. So yes the 3 pins are soldered right, i can confirm those:

RX, TX and GND.

I'm 100% sur that CTS and RTS are essential for the VPxx to communicate with a Terminal/computer (if the document provided above is reliable course!) I'll have to try to build it first, test the cable, and I'll tell you if that's okay.

No I didnt tried any other cable because it's hard to find it rapidly, and I don't want to waste more time waiting for another cable that probably won't work.. There are so much DB9 diagrams out there that I prefer to build the cable myself and tweak around until I have found the issue. Also this way allows me to understand my hardware and share info that MIGHT ( ^^ ) interest someone who's having the same issue.

However i'm looking around me if I could borrow a cable from a friend .. unfortunately it's old and used for specific tasks, not for consumers.. Therefore hard to find. Keenan can you strip out one of your cables for me ? One that works for an update ? Or anyone who has a working cable for updates ?

To simple check if your cable is communicating right: (if you don't want to strip out the original cable)

1 - Go to your Bios and check that port COM1 is set to 3F8 – 3FF / IRQ4

2 - On Windows = > Go to device manager > Check port COM1 > Baud Rate @ 57600 > Flow control set to "Hardware"

3 - Launch Tera Term Pro. Click on Setup > Terminal > Transmit must be set to "CR+LF"

4 - Click on Setup > Serial port and check that Baud rate is set to "57600" and Flow control is set to "Hardware"

5 - Turn on your VPxx > go to configuration > Serial Port Rate > set the value to 57600.

6 - Save confguration on the VPxx and turn it off. Let Tera Term opened.

At this point Tera Term, your Vpxx and your computer are all three ready to communicate properly.

7 - Connect your Serial cable to your PC and VPxx.

8 - Launch the Bootloader Menu on the VPxx by holding down the menu button while pluging in the AC adapter on the back of your VP.
This operation will launch a bootloader menu on Tera Term.

9 - You may think at this point that your cable is working and you're ready to go.. but for me my cable was lacking of some wiring to tansmit the update data. (example : you have to press "h" to launch the update sequence, but I can't do anything and my keyboard is fully working)
Best thing to do from here if you have an old firmware would be to press "h" and update your VP. If the update succeed please send me a diagram or a photo of the pin connexions of the working cable you used.
If you have an Updated VPxx, a simple Reset would be a great proof (that your cable is better that mine ! ^^). So just try the Reset Sequence and tell me if this works. If the data is properly sent from Tera Term then your VPxx should reset as expected.

Thanks a lot.
 

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I don't have my VP50 anymore and I would strip down a cable but I don't have any of them anymore either; they were binned along with the S-video cables I had. :D

Have you tried the USB method? I seem to recall there's specific USB cable/device that will do the job also.

What has Ken Nguyen at DVDO said?
 

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Well Ken Nguyen didn't talked about any of this. Actually the converstation we had didnt really helped since he didnt entered is such details. He was advising me to use a straight through cable, to force the bootloader, and to press "h". All this was already tested and didnt worked so far so not really improving my situation here.
I'll stick with what i can find and i'll find a solution by myself ^^

No problem for the cable. I'll just try to connect RX TX RTS CTS GND. I hope it gives some results.
Also by searching the web i found that many straight through cable don't connect all 9 pins, some are 4 pin some other 5 etc .. it only depends on what your hardware needs to communicate.. That's my conclusion for now !

As for the USB i'm keeping that if i'm out of ideas :D but yeah there's some USBGear USBG-232 stuff that instantly work !
But it's more fun to experiment ! (some may find it's cancer though haha)
 

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I finally build the cable and linked RX/TX/CTS/RTS and GND together.
The operation is a 100 % success!

I'm kind of proud right now because even the DVDO support couldnt bring me a correct answer.. It felt like I was talking japanese to them when I mentionned specific pins of a db9.. anyway it worked.

So if anyone is having a freeze during the VPxx update, it might be his cable!
All he got to do is to solder the following pins:



works like a charm !



Picture of the cable :


I hope this can help someone.. somewhere :D
 

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Hey everyone,

I finally build the cable and linked RX/TX/CTS/RTS and GND together.
The operation is a 100 % success!

I'm kind of proud right now because even the DVDO support couldnt bring me a correct answer.. It felt like I was talking japanese to them when I mentionned specific pins of a db9.. anyway it worked.

So if anyone is having a freeze during the VPxx update, it might be his cable!
All he got to do is to solder the following pins:
Glad to hear you finally got it working! :)
 

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Hello everybody!

I'm new here and I've recently bought a DVDO VP30 in 'Load .abt file now' mode.
Connected to direct serial cable and all went fine, since I've reached about 29%, then it appeared 'Serious error 5. Please call dealer'.
I don't know what this error stands for, is it resolvable?

Thanks for the attention. :)
 
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