ChibiOS Free Embedded RTOS

Strange, it continues to work here using the trunk code.

Does the USB on previous F4 work? see the demo ARMCM4-STM32F407-DISCOVERY-MEMS.

Giovanni

Giovanni wrote:Does the USB on previous F4 work? see the demo ARMCM4-STM32F407-DISCOVERY-MEMS.

Yes, that demo fully works with the current trunk.


~ Tectu

Tectu wrote:

Giovanni wrote:Does the USB on previous F4 work? see the demo ARMCM4-STM32F407-DISCOVERY-MEMS.

Yes, that demo fully works with the current trunk.


~ Tectu

Works for me too.

Is the board the same revision? mine is marked MB1075 B-01 213364206, assuming this is the revision...

Giovanni

MB1075 B-01 213370754 I got here... looks good to me.


~ Tectu

Tomorrow I will post a zip with my ./build directory, this should rule out problems related to the build environment, I will also try another board, just in case. I am out of ideas.

Giovanni

MB1075 B-01 213360448 for me, I guess there are at least 10,000 of these out there

I disabled serial over USB and enabled USART1 for shell on pins PA9 and PA10, and this works fine, tests run ok I'll start having a look at SDRAM since I'm very curious about performance and self-refresh.

I've hacked the ST FMC driver in to the demo, and SDRAM seems to work fine - writing entire SDRAM takes 149ms and reading it back takes 455ms, which seems pretty fast compared to the PSRAM I was using on a 407 board. No errors checking contents, so that's all good I'm sure the official ChibiOS SDRAM support will be much nicer

I'll have a look at self-refresh mode next.

Could you pull-request your hacked demo to the community repo? But please keep the official one, name yours differently.


~ Tectu