ChibiOS Free Embedded RTOS

That would be awesome!

Hi Giovanni!

Do you intend to add STM32F72x support to ChibiOS? There is already a NUCLEO:
http://www.st.com/en/evaluation-tools/nucleo-f722ze.html
I want to use the STM32F722RE for my project.

Cheers,
Jörg

Hi!
this thread is related to my previous one about bit-banging some GPIO using DMA2: http://www.chibios.com/forum/viewtopic.php?f=16&t=3778

When I am using USB (FS) the DMA2-transactions become disturbed randomly.

This article describes a similar issue: m
Please see the last plot on the bottom ...

Yay! I solved this: Apparently, DMA1 cannot access the GPIO registers. DMA2 works!
"Figure 33. System implementation of the two DMA controllers" provides the hint: "The DMA1 controller AHB peripheral port is not connected to the bus matrix like DMA2 controller. As a result, only DMA2 streams are ...

Hi,
I want to use DMA to generate some custom pulse pattern. Now, I'd like to modify my WS2812-LED-Driver for STM32F4 for that purpose.
Here is how it works so far:
dmaStreamAllocate(WS2812_DMA_STREAM, 10, NULL, NULL);
dmaStreamSetPeripheral(WS2812_DMA_STREAM, &(WS2812_PWMD.tim->CCR[WS2812 ...

Hi,

here is a demo that works for STM32F4: https://github.com/joewa/WS2812-LED-Driver_ChibiOS

Cheers,
Jörg

Hello Giovanni,

Finally, I succeeded implementing what I wanted: Starting the ADC in continuous circular mode by a timer. Doing so, all ADC values which are read now, are EXACTLY matching the timer values of the timer which triggered the ADC conversion. I.e. the timer becomes the absolute time ...

Hi,
since I am afraid it can become really tricky I guess its wort the new thread...

Still working on the motor controller, I found this document, how ADC sampling is done in the STM32 PMSM FOC SDK, which is unfortunately not open source.
http://www.st.com/st-web-ui/static/active/en ...

Did you already succeed to make hardware EXT trigger working?

If possible, I would like to trigger the conversion with more than one sample (500+) in scan mode to sample a few inputs.

I have been trying this for some time now: http://forum.chibios.org/phpbb/viewtopic.php?f=16&t ...

Although I am still new to microcontroller programming it's working fine for me! It is very fast and you can set (conditional) breakpoints at runtime and inspect variables. But I have to admitt since I have not used the Chibios-specific features of OpenOCD I don't know what I am missing...

I would ...