I.MX6 Android CAN 命令行测试

/*********************************************************************
 *                 I.MX6 Android CAN 命令行测试
 * 说明：
 *     这里使用can-utils测试一下CAN驱动。
 *
 *                                    2016-8-9 深圳 南山平山村 曾剑锋
 ********************************************************************/

一、shell 命令流程：
    1. netcfg can0 down
    2. ip link set can0 type can bitrate 1000000 triple-sampling on(或者：ip link set can0 up type can bitrate 1000000)
    3. ip -details -statistic link show can0
    4. netcfg can0 up
    5. ./cansend can0 111#1122334455667788
    6. ip -details -statistic link show can0
    7. ./canfdtest -vv can0
    8. ip -details -statistic link show can0

二、运行流程：
    root@android:/ # netcfg can0 down
    root@android:/ # ip link set can0 type can bitrate 1000000 triple-sampling on
    root@android:/ # ip -details -statistic link show can0
    2: can0: <NOARP,ECHO> mtu 16 qdisc noop state DOWN qlen 10
        link/can 
        can <TRIPLE-SAMPLING> state STOPPED (berr-counter tx 0 rx 0) restart-ms 0 
        bitrate 1000000 sample-point 0.733 
        tq 66 prop-seg 5 phase-seg1 5 phase-seg2 4 sjw 1
        flexcan: tseg1 4..16 tseg2 2..8 sjw 1..4 brp 1..256 brp-inc 1
        clock 30000000
        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 
        0          0        0       0       0       0      
    root@android:/ # netcfg can0 up
    flexcan imx6q-flexcan.0: writing ctrl=0x01232084
    127|root@android:/ # cd /data/local
    root@android:/data/local # ./cansend can0 111#1122334455667788                 
    root@android:/data/local # ip -details -statistic link show can0
    2: can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen 10
        link/can 
        can <TRIPLE-SAMPLING> state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0 
        bitrate 1000000 sample-point 0.733 
        tq 66 prop-seg 5 phase-seg1 5 phase-seg2 4 sjw 1
        flexcan: tseg1 4..16 tseg2 2..8 sjw 1..4 brp 1..256 brp-inc 1
        clock 30000000
        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 
        8          1        0       0       0       0      
    root@android:/data/local # ip -details -statistic link show can0               
    2: can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen 10
        link/can 
        can <TRIPLE-SAMPLING> state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0 
        bitrate 1000000 sample-point 0.733 
        tq 66 prop-seg 5 phase-seg1 5 phase-seg2 4 sjw 1
        flexcan: tseg1 4..16 tseg2 2..8 sjw 1..4 brp 1..256 brp-inc 1
        clock 30000000
        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   
        8          1        0       0       0       0      
        TX: bytes  packets  errors  dropped carrier collsns 
        8          1        0       0       0       0      
    root@android:/data/local # ./canfdtest -vv can0
    interface = can0, family = 29, type = 3, proto = 1
    0037: [8] 37 37 37 37 37 70 c9 00
    0037: [8] 37 37 37 37 37 70 c9 00
    0037: [8] 37 37 37 37 37 70 c9 00
    0037: [8] 37 37 37 37 37 70 c9 00
    ^Crecv failed: Bad file number
    Exiting...
    255|root@android:/data/local # ip -details -statistic link show can0
    2: can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UNKNOWN qlen 10
        link/can 
        can <TRIPLE-SAMPLING> state ERROR-ACTIVE (berr-counter tx 0 rx 0) restart-ms 0 
        bitrate 1000000 sample-point 0.733 
        tq 66 prop-seg 5 phase-seg1 5 phase-seg2 4 sjw 1
        flexcan: tseg1 4..16 tseg2 2..8 sjw 1..4 brp 1..256 brp-inc 1
        clock 30000000
        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   
        40         5        0       0       0       0      
        TX: bytes  packets  errors  dropped carrier collsns 
        40         5        0       0       0       0      
    root@android:/data/local #