ChibiOS Free Embedded RTOS

Hi,

I think you should work with timeouts, if the host stops polling for data (buffers full) then packets are not sent. USB_ACTIVE means that the device has been enumerated not that it is under active polling.

You may try writing with a timeout, on timeout add a delay before retrying. The ...

Hi!

Fixed broken TIM2 for STM32C0xx on stable_21.11.x. Caused by missing include, init and deinit of TIM2 IRQ in os/hal/ports/STM32/STM32C0xx/stm32_isr.c

I confirm TIM2 now works for STM32C071RB.


From 12540053b7a96dc2640e640dbb3df0ae0321e78c Mon Sep 17 00:00:00 2001
From: engemil <engemil@users ...

Hi!

Using ChibiOS Stable release 21.11.x
Microcontroller: STM32C071RB

I've been testing the USB driver for a while now, and have come to discover a situation where the microcontroller (STM32C071RB) freezes.

Steps:
- Simple example code, loop every 1 second print with chprintf the text "Test ...

Hi!

Based on development version of ChibiOS (github commit c474a2d75d31ce7e551c6ae69ba75dfdc95a9b7c) (to become version 21.11.5??), I fixed problems with USB for STM32C0xx, with for HAL config file version 9, RT config file version 8, and newest mcuconf for STM32C071RB.

Updated STM32C0xx port ...

Hi Giovanni!

SOLVED ! Thanks for the clarifications! It was just as simple as enabling the DMA request in TIM_DIER . The CCxDE (CC1DE, CC2DE, CC3DE, CC4DE) needs to be enabled ( 0x01 ) for each correlating channel to work (TIM1_CH1, _CH2, ...).

I'll leave a note here for people to see:

I checked ...

Hi!

I got DMA with PWM working with TIM1_CH1 , TIM16_CH1 , and I guess all TIMx_CH1 . However, I seem to have a problem with utilizing other TIM channels, such as TIM1_CH3 . And here I'm not sure if there are steps missing to make it work?

ChibiOS version: Newest ( Master branch, commit ...

SOLUTION!

I accidentally came over how to fix it, after trying to add more functions

Solution is after calling dmaStreamDisable(), you must always setup the mode again with dmaStreamSetMode().

Hi!

I've been trying to setup a simple example on controlling a LED (WS2812) on the STM32C071RB chip with PWM + DMA. Most things work! However, it seems that the callback dma_callback is never called. Any tips on what to look for to make it work?

Here is the main.c file for the example code ...

Alright, I just double checked the numbers, and it seems to be alright.

But, I just discovered something I didn't think would have affected the example code. If I commented out the following lines


pwmEnablePeriodicNotification(APP_PWM_DRIVER);



pwmEnableChannelNotification(APP_PWM_DRIVER ...

Hi!

I've been experimenting this week with the PWM driver for both a Nucleo-C071RB board and a Nucleo-F401RE board.

I seem not to be able to reach periods of 1.25us (trying to build a simple ws2812 example).

ChibiOS: stable_21.11.x branch
Boards: NUCLEO-C071RB (48MHz clock) and NUCLEO-F401RE ...