-- I NEED HELP PLEASE (updated 13 november 2006)
using information from Hans (thanks again), I was able to get power to the atmel.
- I can measure 4.5V between pin 1 and 2 of the atmel processor
- that's a bit low
- In fact this 4,95V, I simply forgot one number...
- what is supply voltage and current at the 12V supply ?
- It is 11,78V
- that's a bit low
BUT, I'm not yet able to communicate with the processor using serial cable.
What I know:
- As I own a v3.1, it looks like I can't use EC18-pin14, 15, 26. So I did as written in this guide: http://vems.hu/www.vems.co.uk/VEMS/ConnectingToSerial.html
- repeat the connection here, describe where the DSUBpin-X goes (for 2,3,5), and check directions are OK
- this is alright, I double checked and this is correct
- repeat the connection here, describe where the DSUBpin-X goes (for 2,3,5), and check directions are OK
Here come the questions:
- I've looked at this page: http://www.atmel.com/dyn/resources/prod_documents/doc2467.pdf , and on my board pin 1 is at 4,9V(PEN), so I won't be able to upload anything, right? Is there a missing component?
- All genboards are initially loaded with a firmware, and mintested (supplies, RS232, WBO2 pump, etc... the assembled ones get much more test)
- But it's possible that after an interrupted (or failed) firmware upload, board gets stuck in BootLoader (in 19200,8n1 say 'S', expect "AVREFI1"). You can try to to upload new firmware (wither with or without the megaloader (or prog.pl) -t option)
- Ok I supposed that firmware was uploaded using the one on the atmel. The -t option doesn't work, it is even used as default in the upload-firmware.bat that I found in the "VemsMT1.0.53". When I use Megaloader, here is what I get: The script stays stuck for a few seconds after "Translation complete!", Maybe you can tell me if it means that firmware was sent.
- But it's possible that after an interrupted (or failed) firmware upload, board gets stuck in BootLoader (in 19200,8n1 say 'S', expect "AVREFI1"). You can try to to upload new firmware (wither with or without the megaloader (or prog.pl) -t option)
- It looks like I'll have to send a new vems.hex without megaloader, how can I achieve this?
Hans: I don't know what was on the V3.1 board from the shop.. but try and see the 2, 3 and 4'th guides on this page: http://vems.hu/www.vems.co.uk/VEMS/
- I have read the docs on your page
Thanks for help
Nicolas
old stuff since here (solved problems)
using information from Hans (thanks again), I was able to get power to the atmel.
- voltage regulator is heating.
BUT, I'm not yet able to communicate with the processor using serial cable.
- My cable works, I measured resistance between DSUB9 and board socket
- Here is a picture of my board now. Don't pay attention to "free" wires.
.JPG)
- I'm sure I'm using the right pin for the RS232
- I don't get any signal in megatune
- as I can see ATM128 is not powered, at least I don't have 3,3V between pin 1 and 2 (in fact, there is no voltage)
Here is how pin are connected now:
- to battery -
- EC36-pin5
- EC36-pin21
- EC36-pin26
- EC36-pin32
- connected to battery +
- EC36-pin25
I'm not sure I have the good pin layout as I'm using the v3.1 board. Could someone confirm that? (especially for the EC36, as I don't have any power on the atmel processor).
I would really appreciate to know if I'm right with the battery + connected to EC36-pin25. As I can see, this pin doesn't go further on the board. I mean, there is no track from where I soldered the cable.
-Yes, battery + (12V) should be connected to EC36-pin25, but see also the following link to see how to mount the power on board..Hans .. http://vems.hu/www.vems.co.uk/VEMS/ConnectingPower.html
Thanks a lot, I'll try this. Bus as I can see on the picture on the page from phattransmission, my board has not the same components. Of the inductor between 1 and 2 and the fuse link between A and B are missing, but other components are not on my board. Do I have more components than the 2 to solder? (I'm not talking about coil/injector drivers)
The inductor from Rescue kit1 marked 1R5 must be soldered Between A&B, and just a wire (short) betwen 1 and 2 if a fuse is mounted external. The inline diode and the voltageregulator (top-left corner of first pic) should bee mounted when you got the board. I think that is it, hope it helps. Hans
Battery is ok
My com port are working fine - tested with dos:
http://www.uktsupport.co.uk/reference/debug.htm
My serial cable is ok
What should I test next? I'm afraid I made a mistake...
-- Presentation
I've just started ooking seriously at Vems for my next engin/projet: a 63 beetle with porsche 915 tranny and type 4 supercharged engin - my next daily.
Pictures of my cars on this website (sorry, everything is in french) http://www.bambulan.com - take a quick look at the gallery