5 replies to this topic

[Jamie Rytlewski]

So my netduino will not do anything at all. The Blue led, white led, and act led stay solid the whole time. I've tried the 3v3 and gold panel reset and my computer keeps telling me that the device is not recognized. I was pushing down the reset button on a wifly shield when this happened. I tried the MF tools also and nothing. Thanks! Jamie

[Chris Walker]

Hi Jamie, If you put a jumper between the 3.3V pad and the ERASE pad then you have erased your Netduino's firmware completely. When the Netduino Plus has been erased completed, its power (white), user (blue), and ethernet activity (green) LEDs will all come on and stay on--consistent with what you're seeing. You'll need to reflash your Netduino Plus (first the bootloader using Atmel SAM-BA, possibly on a 32-bit Windows machine...and then the .NET MF firmware). What version of Windows are you running? 32-bit or 64-bit? Chris

[Eric Burdo]

Hi Jamie,

If you put a jumper between the 3.3V pad and the ERASE pad then you have erased your Netduino's firmware completely.

When the Netduino Plus has been erased completed, its power (white), user (blue), and ethernet activity (green) LEDs will all come on and stay on--consistent with what you're seeing.

You'll need to reflash your Netduino Plus (first the bootloader using Atmel SAM-BA, possibly on a 32-bit Windows machine...and then the .NET MF firmware).

What version of Windows are you running? 32-bit or 64-bit?

Chris

If you did erase the netduino, then you'll need to use SAM-BA like Chris said.

Here is a good post to check out: http://forums.netdui...p__347#entry347

[Jamie Rytlewski]

Actually what was causing the problems was the WiFly board that I have. At one time I pressed the reset button the WiFly board and it put the Netduino in a strange state. When I put the WiFly board back on and pushed the rest button again, all of a sudden the device was recognized by Windows.

By chance, does anyone know of any good sources for WiFly troubleshooting? I've looked a bit on here, and the problem I'm having is getting to Write the SPR and initializing.

WriteRegister(Register.SPR, 0x55);
        if(ReadRegister(Register.SPR) != 0x55)
            throw new Exception("Failed to init SPI<->UART chip");

Mine keeps failing at this part. Does anyone know a good way to use the terminal with just USB? Do I have to get a USB to RS232 adapter?

[Stefan]

Actually what was causing the problems was the WiFly board that I have. At one time I pressed the reset button the WiFly board and it put the Netduino in a strange state. When I put the WiFly board back on and pushed the rest button again, all of a sudden the device was recognized by Windows.

That is very strange! The Reset-button on the WiFly shield (at least the one I have; marked with 6/15/10 on the back) just links Gnd to the Reset-pin. I used this a couple of times without problems.

[Chris Walker]

It's also possible that the RESET button on your WiFly shield is getting "stuck pushed down" (if not externally, then internally). If it's holding the Netduino's MCU in a RESET state, then the MCU won't be able to boot. To determine if that is the issue, just unplug the WiFly shield. If the Netduino comes back to life, you can verify further by measuring the voltage difference between the RESET pin and a power pin using a multimeter. Chris