Re: [Xenomai-help] CAN rt_dev_recvfrom

[Roland Tollenaar <rwatollenaar@domain.hid>]

Hi,

>> Where can I find the buffer size option in the kernel config menu? 
>> What is the default size?
> 
> On the first menu of the RT-Socket-CAN configuration options:
> 
> config XENO_DRIVERS_CAN_RXBUF_SIZE
>         depends on XENO_DRIVERS_CAN
>         int "Size of receive ring buffers (must be 2^N)"
>         default 1024
> 
> Note that the messages are stored in "packed" format.

Does this mean that the buffer will store 1024 can_frame's ?

If yes (or even if no) when rt_dev_recv is called, does it place the 
last recieved message (youngest message) or the oldest (behave like a 
FIFO) into *Buf?

Roland

> 
> Wolfgang.
>