RP2040 PicoMite "Error: Invalid address - resetting"

PicoCalc
1

For information:

One of my PicoH boards loaded with PicoMite (any version) shows the message “Error: Invalid address - resetting” when I try to run a program immediately after powering on, after soft reset it works normally. Also there is a buzzing sound when the heartbeat LED is off.

I was suspecting that the board is faulty for other reasons and now it has been permanently taken out of circulation. I was able to test with two other boards and these did not show the same error.

This is not the PicoH board that was delivered with the PicoCalc.

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2

Did you flash nuke with the .uf2 from Raspberry ?

https://www.raspberrypi.com/documentation/microcontrollers/pico-series.html#resetting-flash-memory

3

Yes I did reflash pico a few times but no change

4

I’m running on the same issue w/ rp2350 and the uf2 bootloader. It failed on one of the multiple swap of the firmware and now I cannot get anything else than an infinite loop of resets.

5

For me the solution came from removing the batteries and re-running the firmware.

Now I can switch firmwares via bootloader and come back to a working picomite.

Not sure what caused the problem in the first place :man_shrugging:t3:

6

Try to flashnuke the Pico and then reinstall. Whatever is causing problems in memory should I theory be wiped.

7

I’ve had this happen several times too. It’s really interesting that removing the batteries somehow fixed it though! I’m not sure what to make of that as I assumed it was something getting corrupt in flash, or PicoMite failing to find something it expected to find in flash.

Just pinging @pelrun in case this provides some sort of weird clue for tracking something down.

8

It looks like the bootloader keeps some data in an area that survived changing firmware on the go, but not power loss.

Otherwise I don’t understand what is going on.

9

Would you believe me if I said it actually does? The one thing pulling the batteries does that a simple reset or power-off doesn’t is that it resets the stm32.

There’ll be either a bug or a persistent state in the keyboard bios that is triggering a bug in the picomite firmware.

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10

This fault is not related to my original post.

11

It is the exact same error message and behavior.

How are you sure it is completely unrelated to your issue?

12

One of my PicoH boards loaded with PicoMite (any version) shows the message “Error: Invalid address - resetting” when I try to run a program immediately after powering on, after soft reset it works normally. Also there is a buzzing sound when the heartbeat LED is off.

PicoH = RP2040
soft reset = external.c:SoftReset()
no reboot loop.
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13

During regression testing I found another Pico (RP2040) board with the same problem. Also another Pico (RP2040) unable to detect the SD card, I suspect that one GPIO pins is not working as expected. The current status:

2 x “Error: invalid address - resetting” after reboot
1 x “SD Card not detected”

At a later date I may try to do some testing to find what is causing these problems.

14

Ignore the content of that error message, it’s not accurate. PicoMite prints it for any hard fault regardless of cause or location, and on the rp2040, every hardware exception is a hard fault.

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15

I now have three Pico1 boards with this problem. I have been digging into the code for several hours, I seem to have found where the problem occurs but I can not explain why on these three boards. What I did find is a hint that there might be a solution in V6.01.00.