[Xenomai-help] Interrupt issue on a PC/104 can interface?

[Xenomai-help] Interrupt issue on a PC/104 can interface?

[ediboscio]

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Dear Sirs,I'm working with an Ubuntu (10.04) system with Xenomai (2.5.6), with kernel 2.6.37.6 and with a Peak-System PC/104 can interface (isa), with two channels.



I connected the two channels of the can interface with a cable (with the two 120Ohms resistor connected at each side) and did the following two tests:


1)
...

rtcanconfig rtcan0 --baudrate=1000000 start

rtcanconfig rtcan1 --baudrate=1000000 start



then, in one terminal:

rtcanrecv rtcan0



in another one:

rtcansend rtcan1 0xA 0xB 0xC 0xD 0xE 0xF 0x01 0x02



Everything seems to work: I can see the message on the receiving terminal. I 

also tried changing rtcansend options, and it works as well.


2)
Then I used the rtcan_rtt xenomai example program.In one terminal:./rtcan_rtt rtcan0 rtcan1 -r -c 250000
And in another one:./rtcan_rtt rtcan1 rtcan0 -c 250000
I also modified the rtcan_rtt to print some additional debug messages, and I found that for each can message sent
 from the transmitter channel I receive ~356 
messages on the other channel, with lot of overruns and huge times. Maybee I have some problems with the 
interrupts?Note that with the rtcanrecv/rtcansend test, for each message sent with rtcansend, rtcanrecv receives one message.
Thanks in advanceEttore
 




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