ChibiOS Free Embedded RTOS

Hello, i am in the process of porting all my stuff to ChibiOS 3.1. Most of the time, it works flawlessly.

With usb-cdc, i notice different behaviour between 2.6 and 3.1 :

2.6 : data is flushed after each chSequentialStreamWrite
3.1 : data is flushed only after the buffer of size SERIAL_USB_BUFFERS_SIZE if full

To let my application run, I have lowered SERIAL_USB_BUFFERS_SIZE, but it's not ideal,
is there any means to flush data after a chSequentialStreamWrite on usb-cdc ?

Thanks,
Alexandre

Hi,

Look at the latest demos, there is a new function to associate to the periodic USB callback, it flushes the buffer automatically. Examples are in any usbcfg.c file.

Giovanni

Yes, the sduSOFHook stuff and associated callback do the job.

Thanks !

Alexandre