I'm trying to get CAN functioning on the P1010RDB. I've got the SDK patched to 1.0.3 (I hope), configured the kernel according to the FlexCAN User's Manual (with the exception of the stuff about device tree binding...couldn't figure out what to do with that information), have CANTEST included in the build. set hwconfig in the u-boot environment.
When I loop the two together using a straight M-M DB9 cable, and run
cantest can0 &
cantest can1 12345678#1234123412341234
as suggested, I get...nothing. I've also tried hooking it up to a CAN monitor, and sending/receiving to one of the two ports. Still nothing.
this 'ip -s -d link show can1'
gives the following results:
3: can1: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen 10 link/can
can state ERROR-ACTIVE (berr-counter tx 0 rx 135) restart-ms 0
bitrate 125000 sample-point 0.875
tq 500 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1
flexcan: tseg1 4..16 tseg2 2..8 sjw 1..4 brp 1..256 brp-inc 1
clock 200000000
re-started bus-errors arbit-lost error-warn error-pass bus-off
0 0 0 0 0 0
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collsns
16 0 0 0 0 0
The interrupt numbers never increase (cat /proc/interrupts).
Help?
John
