Hello,
Were are trying to configure a jetson nx with a can transceiver sn65hvd230. We have performed the following states:
$ sudo busybox devmem 0x0c303000 32 0x0000c400
$ sudo busybox devmem 0x0c303008 32 0x0000c458
$ sudo modprobe can
$ sudo modprobe can-raw
$ sudo modprobe mttcan
$ sudo ip link set can0 up type can bitrate 500000
can0 connexion is failed, sudo ip -details -statistics link show can0, returns
can0: <NOARP,ECHO> mtu 72 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 10
link/can promiscuity 0
can <BERR-REPORTING,FD> state STOPPED (berr-counter tx 248 rx 127) restart-ms 0
bitrate 498701 sample-point 0.870
tq 26 prop-seg 33 phase-seg1 33 phase-seg2 10 sjw 1
mttcan: tseg1 2…255 tseg2 0…127 sjw 1…127 brp 1…511 brp-inc 1
dbitrate 2021052 dsample-point 0.736
dtq 26 dprop-seg 6 dphase-seg1 7 dphase-seg2 5 dsjw 1
mttcan: dtseg1 1…31 dtseg2 0…15 dsjw 1…15 dbrp 1…15 dbrp-inc 1
clock 38400000
re-started bus-errors arbit-lost error-warn error-pass bus-off
0 2807 0 1 1 1 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
RX: bytes packets errors dropped overrun mcast
22480 2810 2807 0 0 0
TX: bytes packets errors dropped carrier collsns
0 0 0 9 0 0
and sudo dmesg | grep mttcan , returns something like :
[ 269.151848] net can0: mttcan device registered (regs=ffffff80262b6000, irq=63)
[ 288.532746] mttcan c310000.mttcan can0: bitrate error 0.2%
[ 288.532895] mttcan c310000.mttcan can0: Bitrate set
[ 288.532980] mttcan_controller_config: ctrlmode 0
[ 288.532997] mttcan c310000.mttcan can0: Bitrate set
[ 373.572364] mttcan c310000.mttcan can0: bitrate error 0.2%
[ 373.572510] mttcan c310000.mttcan can0: Bitrate set
[ 373.572579] mttcan_controller_config: ctrlmode 0
[ 373.572596] mttcan c310000.mttcan can0: Bitrate set
[ 438.054346] mttcan c310000.mttcan can0: Bitrate set
[ 438.054380] mttcan c310000.mttcan can0: bitrate error 1.0%
[ 438.054579] mttcan_controller_config: ctrlmode 30
[ 438.054603] mttcan c310000.mttcan can0: Bitrate set
[ 441.309916] mttcan c310000.mttcan can0: Stuff Error Detected
[ 441.310158] mttcan c310000.mttcan can0: IR 0x8010000 PSR 0x711
[ 443.490880] mttcan c310000.mttcan can0: Stuff Error Detected
[ 443.491132] mttcan c310000.mttcan can0: IR 0x8010000 PSR 0x711
[ 443.910085] mttcan c310000.mttcan can0: Stuff Error Detected
[ 443.910324] mttcan c310000.mttcan can0: IR 0x8000000 PSR 0x711
[ 444.976860] mttcan c310000.mttcan can0: Stuff Error Detected
[ 444.977085] mttcan c310000.mttcan can0: IR 0x8010000 PSR 0x711
[ 445.461675] mttcan c310000.mttcan can0: Stuff Error Detected
[ 445.461876] mttcan c310000.mttcan can0: IR 0x8000000 PSR 0x711
[ 447.648415] mttcan c310000.mttcan can0: Stuff Error Detected
[ 447.648641] mttcan c310000.mttcan can0: IR 0x8010000 PSR 0x711
[ 447.725279] mttcan c310000.mttcan can0: Stuff Error Detected
[ 447.725472] mttcan c310000.mttcan can0: IR 0x8010000 PSR 0x711
[ 1248.302364] mttcan c310000.mttcan can0: bitrate error 0.2%
[ 1248.302552] mttcan c310000.mttcan can0: Bitrate set
[ 1248.302625] mttcan_controller_config: ctrlmode 30
[ 1248.302647] mttcan c310000.mttcan can0: Bitrate set
[ 1249.882288] mttcan c310000.mttcan can0: Stuff Error Detected
[ 1249.882456] mttcan c310000.mttcan can0: IR 0x8010000 PSR 0x711
[ 1250.011799] mttcan c310000.mttcan can0: Stuff Error Detected
[ 1250.012009] mttcan c310000.mttcan can0: IR 0x8000000 PSR 0x711
Any ideas ?
Thanks in advance