SpokePOV, can't write, diagnostics

[tomjennings]

Hi, bought a SpokePOV kit, assembled, tested OK (power on LED run). Having problem loading image to it.

Host computer is Win XP Pro, SP2. Since I forgot to buy a serial dongle I made a parallel one.

I get the informative "Failed at address 0". I don't doubt I've screwed up, but I could use a hint. There's very little info on the web page as to what normal behavior and sequence of events is, precisely.

giveio is running; giveio_status says so; giveio_install claims sucess.

With the dongle plugged on, power-on-reset by removing a battery ("POR") doesn't run the LED sequence test. Dongle off, it does. Is this correct behavior? (I assume the microcontroller sees the host via dongle and waits for a command.)

I put a 'scope on the 4-wire interface:

** RESET remains high always (click WRITE, press switch)

** MOSI/SPI_IN stays high always

** SCK see pulses on click WRITE, no pulses on switch press

** MISO/SPI_OUT see pulses on switch press, no pulses on WRITE click


There seems to be specific static LED patterns with the dongle on (switch press changes it), could tell U which LEDs if it's diagnostic (as opposed to random


It's really not clear what I *am* supposed to see; precisely when and in what order I am supposed to do the following:

** power reset
** press switch
** click WRITE
?

ANy help appreciated... one week to go til BRC... I assume not enoug time to order and ship a serial dongle before next week!

[nyar]

I use a serial dongle, but the order of operations seems to be pretty important for me.

1) Make sure header is disconnected
2) Power up board
3) Start SpokePOV
4) Connect header

[tomjennings]

1) Make sure header is disconnected
2) Power up board
3) Start SpokePOV
4) Connect header

Thanks!! OK, that tells me a lot; the lack of power-on-reset-LED-test with the dongle plugged on was tripping me up.

Then I assume it's:

5)Press switch on spokePOV
6)Click WRITE

?

Thanks again!!

[nyar]

3) was in reference to SpokePOV.exe , btw.

And you should be able to write, right after the power-on LED test, no need to reset the board.

Good luck!

[tomjennings]

Sheesh, no matter how many times you check it's not enough... I had my dongle wired wrong. Duh. Never mind!

I'm having repeatable software problems w/spokePOV.exe but will start separate thread.