ChibiOS Free Embedded RTOS

Hi,
in our project i found some small problems with the MMC Driver in our current Version 2.3.4. It was not possible to use multiple Devices on the same SPI with the old driver becase there was a spiAcquireBus missing. I fixed the problem but now i don't know where to update the code in SVN. I could ...

Hi,
actually we don't use the preserved register. I just had a look at the diassembly to find the cause of my error. We still think the problem is that the stacksize of the irq is too small.
After we increased the __irq_stack_size__ in AT91SAM7X256.ld it seems like i solved the problem.

So the ...

Hi,
I got a little bit stuck with my implementation of the "uartAT91StartReadQueuedI".

In the interrupt of the USART0 i call a callbackfunction. This will call the function "uartAT91StartReadQueuedI" be able to receive. But while calling that i will write over the bounds of the stack in ...

Hi,
while i'm in callback i maybe miss the start of the next frame.

Regards,
Florian

Hi,
within our project we need a continous receive of data via the UART. For that case the DMA Controller of the AT91SAM7 provides two Receive (and two transmit) Buffer. Even with a lot of thinking we did not find a solution how we implement that in the lowlevel driver with the given highlevel ...

Hi,
If you allow I'll integrate the driver my way and I try to help maintainining as much as possible.

I'd need some tutorial for that.

Regards,
Florian

Hi,
I'm wondering if the (AT91SAM7) CAN Driver will be integrated in the next version of ChibiOS. Can I somehow support that?

Regards,
Florian

I have a thread which does some CAN initialisation. This is needed later on in the main thread. So i just wait until the CAN-Thread is ready. To not suck in a while, which does nothing, i want to yield execution to the CAN thread.

I had other situations where I just wanted to ensure that the thread ...

Hi,
i think i found the cause of the SV#4. After creating a thread we used chSchDoReschedule() instead of chThdYield(). But why doesn't chSchDoReschedule() work?

Regards,
Florian

Hi,
the prorities are like in board.c defined highest - 1. We are on a AT91SAM7X256 (board by olimex).

from board.c:
/*
* PIT Initialization.
*/
AIC_ConfigureIT(AT91C_ID_SYS,
AT91C_AIC_SRCTYPE_HIGH_LEVEL | (AT91C_AIC_PRIOR_HIGHEST - 1),
SYSIrqHandler);
AIC_EnableIT(AT91C_ID_SYS);
AT91C_BASE ...