ChibiOS Free Embedded RTOS

I just faced the same problem, I wanted to output a PWM signal on TIM15 on a STM32F072. I didn't need any IRQs/callback. To make it compile (current ChibiOS git master branch) I configured it like this in mcuconf.h: #define STM32_PWM_USE_TIM15 TRUE #define STM32_TIM15_SUPPRESS_ISR Then it compiled, ...

I now implemented it using the weak symbol before crt0.S, as Giovanni suggested. I think this is the more clean method as I don't have to change anything in generated board-code and also don't have to reset anything like cpsid, but just keep the original settings from the reset of the MCU. This is t...

I have STM32F103C8T6 eval board "Blue Pill". I don't know if you are aware of this, but recently a lot of the boards sold as "Blue Pill" do not contain true STM32F103 from ST anymore, but MCUs that are more or less compatible from other manufacturers. Sometimes they carry their ...

I want to do exactly the same thing in my next project. Which exact STM32 model were you using? I guess the bootloader code is quite different between the series, as they have a wide variety of different features. Were you able to implement Giovannis suggestion, a module after vector.S and before cr...

I don't know if you are aware of it, but Gigadevice has the GD32VF103 available. This is interesting for ChibiOS I think, because it is a RISC-V mcu which contains the well-known peripherals from the STM32F103. So a port would "just" need to take care of the processor core, the peripherals...

I had the exact same issue before, see http://www.chibios.com/forum/viewtopic.php?f=38&t=4589#p33624 for a detailed analysis of the problem and a suggestion how to fix it.

But wouldn't it be better to just fill in a few other AF positions in the matrix to give you a few more options to move things around instead of requiring the much larger package? I don't know why they did it like that. I guess there are technical reasons. Maybe the HS PHY IP they licensed allows o...

(*) The fact that only the physically larger versions have this hints to me that they might be adding an ULPI chip inside the package. On the other hand, this is the "value line", so not a chip where you expect a multi-chip-package. The first thing I look at when trying to figure out such...

I concur that the circular buffer implementation won't be easy to implement in a correct way. You would have to suspend DMA operations, do your read/write then resume DMA operations, I am not even sure it is possible to suspend/resume DMA channels. How about using two buffers instead of the circular...

I'm not working in an industry with specific functional safety requirements, so I'm not that experienced with such requirements and norms. But I still like to improve the reliability of the stuff I build if it doesn't take too long to implement. Here are some more ideas in this area from me: - Flash...