ChibiOS Free Embedded RTOS

Oh oh,

I just forgot to initialize the four pins...
Sorry for the disturbance and thanks a lot for the fast help!!

Good evening everybody

I had a little SPI (test)program running under ChibiOs 2.6.1 on STM32F30x and now I'm trying to get it running on STM32F4xx.
Mosi and Clock lines are working good but CS remains always low level. I tried with 'Software slave management disabled' and 'enabled in the SPI_CR1 ...

Thank you for your explanations, this helps me a lot!

Best regards,
Florian

Hello
I wrote spi code of following structure:
spiSelect(...);
spiExchange(...);
spiUnselect(...);

Now I saw in the ARMCM3-STM32F100-DISCOVERY example code of the following structure:
spiSelectI(...);
spiStartSendI(...);
spiUnselectI(...);

Now my questions are: Are I'm using DMA automatically ...

Thanks for the answers!
I now see that a systick of 1ms don't mean that the accuracy is only +-1ms. Is there any "rule" to get a good value for systick frequency depending on the fastest regular timed thread?

I have here an STM32F4Discovery and an Stm32F3Discovery board.
Is it arguable now to go ...

Hello Chibios-friends,

I'm a beginner of RTOS programming and this is not a chibios specific question, but I hope someone can give me a short answer.
One aim of the application should be to do this every 5 ms:
Read out 2 sensors over SPI/I2C by DMA --> Calculate current state by a filter and new ...

Oh, I just didn't see this!

So I'm relaxing and waiting

Hallo experts,

I'm currently trying to port "ARMCM4-STM32F407-DISCOVERY" project to my Crossworks (GCC) toolchain.
So I installes IAR to check how things work. I made a project with the same composition and of course used the GCC specific files.
Things now compile but I have errors with the linking ...