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freewing 发表于 2017-9-4 11:11:21 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
  亚博——百度知道科技iMX6UL开发板平台的其中一个特点是支持双网卡:一机双网,可以使用内网外网于同一个板,直接上传数据。下面来讲解i.MX6UL工控板核心板网卡模块的测试方法,烧写使用tq-imx6ul_net0_net1.dtb 就是双网卡,这里只以eth0 为例子讲解。eth1 方法也一样。靠近耳机接口那一端子的是eth0,测试网卡模块时,接上网线,如果当前网卡是状态是down,网卡灯是不会亮的。在命令行输入操作如下:

  # udhcpc -i eth0
  udhcpc: started, v1.25.1
  fec 2188000.ethernet eth0: Freescale FEC PHY driver [Micrel KSZ8081 or KSZ8091]
  (mii_bus:phy_addr=2188000.ethernet:02, irq=-1)
  IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
  udhcpc: sending discover
  fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
  IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
  udhcpc: sending discover
  udhcpc: sending select for 192.168.1.236 #成功分配到ip
  udhcpc: lease of 192.168.1.236 obtained, lease time 7200
  deleting routers
  adding dns 202.96.128.166 #自动设置dns
  adding dns 202.96.134.133
  # ping www.qq.com
  PING www.qq.com (14.17.32.211) 56(84) bytes of data.
  64 bytes from 14.17.32.211 (14.17.32.211): icmp_seq=1 ttl=55 time=5.34 ms
  64 bytes from 14.17.32.211 (14.17.32.211): icmp_seq=2 ttl=55 time=5.12 ms
  64 bytes from 14.17.32.211 (14.17.32.211): icmp_seq=3 ttl=55 time=7.80 ms
  64 bytes from 14.17.32.211 (14.17.32.211): icmp_seq=4 ttl=55 time=5.41 ms
  ^C
  --- www.qq.com ping statistics ---
  4 packets transmitted, 4 received, 0% packet loss, time 3004ms
  rtt min/avg/max/mdev = 5.122/5.923/7.804/1.091 ms


  如果一直循环打印一下信息说明网卡模块正常,测试完成后,在命令行按ctrl+c 键中断ping。
  以上是测试外网的。如果不能连接外网。可以设置ip 后直接与pc 互ping。

  # ifconfig eth0 192.168.1.40 up #设置板子ip 要与电脑ip 为同网段
  fec 2188000.ethernet eth0: Freescale FEC PHY driver [Micrel KSZ8081 or KSZ8091]
  (mii_bus:phy_addr=2188000.ethernet:02, irq=-1)
  # ifconfig eth0 downfec 2188000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
  # ping -I eth0 192.168.1.49 #指定使用eth0 ping pc 的ip(192.168.1.49)
  PING 192.168.1.49 (192.168.1.49) from 192.168.1.40 eth0: 56(84) bytes of data.
  64 bytes from 192.168.1.49: icmp_seq=1 ttl=64 time=0.625 ms
  64 bytes from 192.168.1.49: icmp_seq=2 ttl=64 time=0.393 ms
  64 bytes from 192.168.1.49: icmp_seq=3 ttl=64 time=0.378 ms
  64 bytes from 192.168.1.49: icmp_seq=4 ttl=64 time=0.351 ms
  64 bytes from 192.168.1.49: icmp_seq=5 ttl=64 time=0.374 ms
  ^C
  --- 192.168.1.49 ping statistics ---
  5 packets transmitted, 5 received, 0% packet loss, time 3998ms
  rtt min/avg/max/mdev = 0.351/0.424/0.625/0.102 ms
  #
  如果打印以下信息说明网络不通:
  ping: bad address 'www.qq.com'
  可能是ip 或者dns 没有设置对。
  另外如果同时两个网口都接上网线时,两个网卡的ip 要设置成不同的网段。

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