Available for purchase?

martinribelotta / h730duino

STM32H7 Arduino form factor and software compatible board

MIT License

29 stars 15 forks source link

Available for purchase? #2

Open JacobChrist opened 1 year ago

JacobChrist commented 1 year ago

Do you have any of these boards assembled that can be purchased somewhere?

martinribelotta commented 1 year ago

Not at this point due the shortage...

I maintain this issue open while this condition not change

JacobChrist commented 1 year ago

Has this board been built and tested?

https://www.pcbway.com/project/shareproject/stm32h7duino.html

Or if I purchased it would I be troubleshooting it if I built it myself?

martinribelotta commented 1 year ago

The board have many ussues corrected but not tested:

[x] The debuger is removed due to lack of the stm32f042 in the market
[x] The OctoSPI route is corrected but not tested
[x] the QSPI is not work but apperar as a firmware problem and not hardware connection
[x] ethernet is not tested
[x] USB is working in firmware and bootloader mode
[x] CPU is working
[x] RTC not start properly. Need more investigation

JacobChrist commented 1 year ago

So I've been looking at the schematic and there is something that is confusing to me. It may be correct but I have little experience with QSPI and none with OCTO SPI. The OSPI chip is split between two different SPI ports.

Why not use P1 IO0-IO7 on this part?

This is from this part of the schematic:

JacobChrist commented 1 year ago

I've done a lot of reading on OCTOSPI today as well as trying to settle on where to hookup memory to my H730 and I'm pretty sure that your OCTOSPI lines are hooked up incorrectly on your memory. (Assuming I"m looking at the latest schematic). I don't fully understand if it is better to use the upper or lower nibble for the QSPI device but it seems like you should use all the P1 on the RAM chip and all of the P2 pins on the FLASH chip.

JacobChrist commented 1 year ago

The SEEED Studio WIO board uses P2-IO4..7 for flash.

https://www.seeedstudio.com/Wio-Lite-AI-Single-Board-p-5120.html

JacobChrist commented 1 year ago

Today I started playing around with STM32 CUBE MX IDE and I can now see that it is quite easy to move the data nibbles of either P1 or P2 to either bus, so I now can see that your wiring probably will work as is.

JacobChrist commented 1 year ago

@martinribelotta any progress on this design / production boards?