Mity CPU Platforms » MityDSP-L138 (ARM9 Based Platforms)

I sent the following mail to Developers:

We bought MityDSP-L138F with Industrial IO Board.

We want to use CAN interface(mcp2515) with linux system.

But I don't know how to open spi port in /dev folder. (I can open uart port with '/dev/ttys2')

if you have some example program source for SPI with CAN interface, Could you send me some example sources?

in addition, if there is another proceed before making program, I will really appreciate for your additional information about setting.

And I got a following Answer:

The mcp251x driver is already in the kernel and you should be able to access the CAN device via can0. Have you reviewed our wiki page which discusses CAN support? <https://support.criticallink.com/redmine/projects/indio/wiki/CAN_support>
Regarding SPI, you will need to make sure all of the pinmuxes are set for the pins in question, and then update the spi device initialization tables. If you want to use spidev (to control your devices in userspace), then you'll need to add an entry for spidev in the spi device initialization tables for each chip select entry. There should be some examples of spidev in some of the other baseboard-*.c files you should be able to reference.

Thank you for your reply.

At first, I found wiki page which discusses CAN support <https://support.criticallink.com/redmine/projects/indio/wiki/CAN_support> already, but I cannot install 'can-utils' and 'iproute2' packages in MityDSP terminal window. I think the problem is feed server, but i don't know how can I modify feed server. so I can't test can0 in MityDSP-L138F board yet.

And, He told me about 'baseboard-*.c' and i found a 'baseboard-industrilio.c', but i think it is not useful for connect spi(CAN) in MityDSP(Industrial IO), but when i want to use SPI in my custom board.

how can i code my source to connect SPI / mcp2515?

in addition, When i want to connect to UART2, Does it work well "open(/dev/ttys2)" ?

Thank you for reading.