Oleg: do you use an extended ID or standard ID? And do you use the CAN app from examples?
Verstuurd vanaf mijn iPhone > Op 15 jan. 2020 om 22:02 heeft Oleg Evseev <ev.m...@gmail.com> het volgende > geschreven: > > Hi! > > When I use usual file descriptor for can device: > file_open(&CANmodule->file, "/dev/can0", O_RDWR); > everything works, thread blocks if further read() and, when can message > receive, returns correct nbytes. > > When I open can0 with > file_open(&file, "/dev/can0", O_RDWR); > > it opens correctly and file_ioctl seems to work. But file_read from &file > do not block and return immediately same nbytes as requested with some > garbage in data. But there is no data on CAN bus. Polling (of course with > POLLFILE mask) also do not get blocked and return POLLIN event immediately. > > Doing file_detach() as describe in > https://www.nuttx.org/doku.php?id=wiki:nxinternal:detachedfds leads to the > same result. > > Any thoughts? > > Thanks. > > -- > With regards, > Oleg Evseev
