ChibiOS Free Embedded RTOS

Hi all,

I can confirm that this works perfectly on the STM32F303 (F3 Discovery board).

Many thanks for this z80, I was just at the point where I would have needed to write it myself, so you saved me a few days of development time

Cheers,
Vik

Thanks for this, I'll test this evening but I expect that it will work fine.

A pedantic point about S2ST() though:

#define S2ST(sec) \
- ((systime_t)((sec) * CH_FREQUENCY))
+ ((systime_t)(((uint32_t)(sec)) * ((uint32_t)CH_FREQUENCY)))


This is probably a waste on architectures where systime_t ...

I'll add a cast to uint32_t to both the parameter and CH_FREQUENCY in next version.

Giovanni

Hi Giovanni,

The AVR patches are in trunk now, but they don't really work because of this bug. Can we fix it in trunk?

Btw, if you are going to use uint32_t, then you might want to change 1L and ...

Hi Fabio,

The multi-slave stuff is really a question / feature request for 3.0. I have a project that would need it but it should be doable by using pal instead.

Slave support is pretty much all I wanted to get working as it gives me a very convenient way of testing the driver. That's now done and ...

The current SPI driver model does not support a slave mode, that kind of enhancement is necessarily a non-standard extension. I think a separate slave SPI driver model should be created but this is a task for ChibiOS 3.0.

Actually the changes required to support slave mode on the AVR are really ...

Yes, those macros received a fix 3 weeks ago in order to fix a problem, probably this overflow is a side effect of the fix.

Yes, I can see the problem. It is a side effect.

Index: chibios-svn/os/kernel/include/chvt.h ...

Hi Giovanni, thanks for this.

PM sent. SPI support (based on Fabio Utzig's work) pushed into my tree in the meantime (m)

I modified the driver so it also works in slave mode which has the benefit that you can use two devices to test each other.

I don't think everything will work out of the box ...

How about creating an AVR board and start moving threads related to this arch there so that things are better organized?

Giovanni will do that presumably once he's got his internet access sorted out again

In the meantime I'll probably have to write something like this and check how the compiler ...

The risk with pointers to registers is to increase the code size, each access would have to go through a pointer, loading a pointer requires several instructions.

That's a very good point, thanks. I did do a quick test though, and in this particular case it did not seem to make a difference ...

Hi Giovanni,

There is no rush. I'd like to get a few fundamental things right in the core though, because it will get harder to change that later. I was thinking about things like the best way of handling MCUs with multiple timers, serial ports, etc. without too much code duplication.

I think the ...