ChibiOS Free Embedded RTOS

Hi,
some more investigation show that this is the MMC SD card that is slow.
I added some measurement, and this is what I get when writing a 10 MB file to some SD cards :


Statistics
----------
- size of a writing block: 512
- Number of ticks: 69037
- Average Write Speed: 151&#46 ...

Hi Badger,

I actually did not measure the transfer rate. As far as I can remember, it took a good share of minutes to transfer a simple 8MB file.
Concerning the freeze, it may be that it is only an interpretation... it could be that it was actually doing its job, but so slow that it looked like ...

Hi guys,

I posted a new question related to the Mass Storage device, here: viewtopic.php?f=3&t=666#p6704

Fred

Hi,

I'm using Mass Storage device code from Badger... Great work! but I have a problem.
The data transfer is damn slow... and even freezes sometimes.
Has anyone already got this problem.
Has anyone some clues how to fix or where to investigate ?

as a side note: we plan to develop a composite usb ...

Hello all,

I confirm that everything works fine now.
Shame on me, I had forgotten to update the path to the REV_B board directory... now we have the serial console, the shell, fatfs, etc...

We compile, flashed and connected from windows, linux and macosX, it all works.
@MaBl: Thanks for your help ...

Bad news, after recompiling with Rev.B board files, it still does not work.
Something sounds suspicious to me :

/*
* Port D setup:
* PD0 - Input with PU (unconnected).
* PD1 - Input with PU (unconnected).
* PD2 - Input with PU (unconnected).
* PD3 - Input with PU (unconnected ...

@mabl: Prima I hope it will fix our problem. This will also help us understand a bit more how the mapping works.
@giovanni: yes, we should include Rev.B board definition. By the way, thanks for your great work. We are new here, we'll contrite as much as we can.

Yes indeed. Any particular issue with that ? Is the code of the demo for revision A ?
Fred

Hello,
I'm working with the ARMCM3-STM32F107-FATFS demo, on the Olimex STM32-P107 board.
I'm supposed to have an interactive terminal on the COM1 port, that is mapped to USART2.
I have nothing!!! and I cannot find why.

I connect to the board with
screen /dev/tty.USB1 38400
Nothing happens ...