Hi Gregory, I found the problem. Made an issue: https://github.com/apache/incubator-nuttx/issues/111
чт, 16 янв. 2020 г. в 00:31, Gregory Nutt <spudan...@gmail.com>: > > > But file_read on file pointer doesn't work in the same way as read on > file > > descriptor, even if it is in the same thread - right after file_open! > > That would be surprising because read() just calls file_read(). I would > expect the behaviors to be the same. > > If there is a semaphore locking issue, I would first be suspicious of > drivers/can/can.c. > > Did you try enabling CAN debug. Perhaps, if you are lucky, it will show > something of interest. > >
