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ElDominio / ParalelaHardware

Hardware design files for EasyEDA for the AlphaECU 2Chan Parallel
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only Some APM32 Paralelas report "Device Descriptor Request Failed" on USB, processor seems alive? #13

Closed ElDominio closed 7 months ago

ElDominio commented 1 year ago

Some Paralelas after flashing f407-discovery seem to have USB comms die, but still talk fine with STLink, and flash leds as if everything is ok. Satanic possesion? Probably due to Geehy not being STM and incompatibilities from this

rusefillc commented 1 year ago

https://github.com/ElDominio/ParalelaHardware/blob/main/V2Fix/Schematic.pdf

ElDominio commented 1 year ago

Most of them flash fine, connect to tunerstudio, and after you disconnect and reconnect they never come back to life through usb, even though processor seems to be alive and well

rusefillc commented 1 year ago

@ElDominio what oscillator frequency is mounter? 8mhz? 12mhz? else?

eclipse_k36vJNm0kG

rusefillc commented 1 year ago

"8 MHz" "X1" "OSC-SMD_L5.0-W3.2" "1" "NX5032GA-8MHZ(STD-CSK-7)" "Nihon Dempa Kogyo"

ElDominio commented 1 year ago

Where is that? in STM32cube? Or in Device Manager? I don't even know what a "mounter" is

rusefillc commented 1 year ago

Where is that? in STM32cube? Or in Device Manager? I don't even know what a "mounter" is

that's eclipse debugging session

ElDominio commented 1 year ago

Most of them flash fine, connect to tunerstudio, and after you disconnect and reconnect they never come back to life through usb, even though processor seems to be alive and well

Just quoting this because of oddness. USB comms dies, but everything else is still alive, you can flash firmware as many times as you want but it will still be broken

ElDominio commented 1 year ago

@rusefillc not due to processor, same happens on OG STM32 boards. Still alive through DFU

ElDominio commented 1 year ago

weirder: they started talking through USB again? with no intervention from my part?

rusefillc commented 1 year ago

smells like firmware issue

ElDominio commented 1 year ago

Another fun fact:

I got another batch of STM32 Paralelas, have only tested 3 but I have loaded firmware+tune and they all seem alive and well, even with multiple USB connect/disconnects. This is pointing more to a specific hardware+firmware issue concerning APM32. Will have more tests coming in the coming weeks.

@rusefillc you need 3 STM, and you will ship 1x APM + 1 STM Paralela to Ukraine correct?

rusefillc commented 1 year ago

@ElDominio I am mostly interested in BROKEN stm32

please do NOT ship any stm32 of the "good" batch

ElDominio commented 1 year ago

At the current time, ALL STM32 Paralelas are working fine. Two had a hiccup yesterday but seem to be back to life with no further errors. Next one that locks up I will put in a box for @rusefillc

ElDominio commented 1 year ago

This seems to be very APM-specific. Up until now ALL STM32's have not suffered this for more than one or two restarts, after which it does not come back.

ElDominio commented 8 months ago

This is due to using APM32 chips. Zero STM chips have had this issue. If not useful, will close

ElDominio commented 7 months ago

Not useful, will close