HEW hangs with FoUSB

I have been working on a project using a M16/Tiny 026F8.  To debug the project, I took a QSK26A and removed the 026F8 from the board.  I then added a 14 pin header to the board and to that header attached the needed lines to control an outboard 026F8.  Specifically:

Pin #   M37641F8HP    026F8

Pin 1    pin 29              pin 28 (P6-5)

Pin 2      gnd                      gnd

Pin 3    pin 59              pin 4 (CNVss)

Pin 4    n/c                   n/c

Pin 5   pin 28,56           pin 26 (P6-7)

Pin 6     gnd                        gnd

Pin 7   pin 57                pin 6 (P8-6)

Pin 8   Vcc                     Vcc

Pin 9  pin 61                  pin 29 (P6-4)

Pin 10  gnd                     gnd

Pin 11  pin 27                pin 27 (P6-6)

Pin 12  gnd                      gnd

Pin 13  pin 62                pin 7 (*reset)

I built a prototype PCB and had it working with HEW.  I had a production run of the PCB's done and they do not work.  I have checked for errors, but the boards ring out identical to the prototype PCB.

I can open up FoUSB and it says it downloads the program and verifys it - but the board does not work when power is applied away from the QSK26A.

In HEW, it recongnizes the board on startup for debugging, and also allows me to download a program. (It does pause for a few seconds after reaching 100% which seems strange)  When I start the program in HEW, nothing seems to happen - breakpoints do not work.  Clicking on the stop button gives the "Communication protocol error (Argument error)(16230)" and I have to use Task Manager to close HEW.

One difference I just thought of is that I am running WIn7 now where I was running Vista before.

If needed, I can post the schematic on my website.

I would really like to get these items on the market, so any help you can provide would be appreciated!

Thanks,

David

Parents
  • Hi Anothy - thanks for the suggestion - I am not sure why I had not thought of if before - I had run into that problem with MicroChip processors and had switched to using oscillators instead of crystals.  I tried a 10MHz oscialltor and the board came to life.  Unfortunetly the RTA_FoUSB still will not connect to the board.

    Thanks again,

    David

Reply
  • Hi Anothy - thanks for the suggestion - I am not sure why I had not thought of if before - I had run into that problem with MicroChip processors and had switched to using oscillators instead of crystals.  I tried a 10MHz oscialltor and the board came to life.  Unfortunetly the RTA_FoUSB still will not connect to the board.

    Thanks again,

    David

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