I am rather new to Linux development, so please bear with me. I have successfully taken Kernel 3.10.18 from Kernel.org, xenomai 2.6.3 (with associated ipipe patch from gna.org) and have built a kernel that I can run. It tests very well on a 16550 serial port on an Advantech dual-core 1.8 GHz ATOM processor board, and has removed the latency I was experiencing with the standard ioterms serial port mechanism.
My next step lies in utilizing a CAN PC-104 board (Advantech PCM-3680 is what I have now) to send and receive messages in close time with serial data received from a 16550A UART. I've struggled a bit and cannot successfully get xeno_can_isa to load with what I think are the correct io and irq settings. I think I need io address of 0xda0000 but am told this is "invalid for parameter 'io'". The board's documentation uses the old x86 segment:offset notation of 0xDA00:0000, which I think is 0xDA0000. Advantech provides a kernel module that *does* work on this hardware, but I can see apparent latencies utilizing their driver. If I understand the way their ioctl() handler is written, it allocates and frees kernel memory and calls the kernel scheduler while waiting for the I/O to complete, certain to create issues if I utilize that within a task I spin up with rt_task_start(). So, bottom line is I'm wondering if I should be able to get this Advantech PCM-3680 device to operate with this current version of xenomai's xeno_can_isa, OR should I consider choosing a different PC-104 (ISA) hardware that is known to work with the xenomai CAN driver? Thoughts? Suggestions? Many thanks, Wayne PRIVACY NOTICE: The information contained in this e-mail, including any attachments, is confidential and intended only for the named recipient(s). Unauthorized use, disclosure, forwarding, or copying is strictly prohibited and may be unlawful. If you are not the intended recipient, please delete the e-mail and any attachments and notify us immediately by return e-mail. _______________________________________________ Xenomai mailing list [email protected] http://www.xenomai.org/mailman/listinfo/xenomai
