AM335x DHCP configuration

sanjeev majumdar

Other Parts Discussed in Thread: WL1271

how can i configure am335xevm as DHCP client on eth0. i have arago-base-tisdk-image-am335x-evm-20160405224338.rootfs filesytem flashed and booting from NAND.

thanks

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

Hi,

See processors.wiki.ti.com/.../Linux_Core_CPSW_User's_Guide

0 sanjeev majumdar over 9 years ago in reply to Biser Gatchev-XID

Intellectual 340 points

thanks its very useful... if I want to configure the am335xevm as DHCP server how can I achieve that

0 Biser Gatchev-XID over 9 years ago in reply to sanjeev majumdar

TI__Guru**** 393215 points

See this thread: e2e.ti.com/.../367617

0 sanjeev majumdar over 9 years ago in reply to Biser Gatchev-XID

Intellectual 340 points

hi BISER

i followed the link u have suggested but i dint found how to setup dhcp server. i could also find the udhcp package from busybox site but how to install it i m not getting. kindly tell me wat next i can do

0 Biser Gatchev-XID over 9 years ago in reply to sanjeev majumdar

TI__Guru**** 393215 points

I have asked the software team to help on this.

0 Kemal R. Shakir over 9 years ago in reply to Biser Gatchev-XID

TI__Guru 55345 points

Hello Sanjeev,

Change the interface that the udhcpd will use to interface eth0 in /etc/udhcpd.conf

Open the /etc/init.d/busybox-udhcpd script, find and replace all the DHCPD_CONF variables with DHCPDCONF then reboot the board.

During the booting the udhcp daemon will be started in runlevel 5 by /etc/rc5.d/S20busybox-udhcpd.

If everything went well the output of this command will look like this:
root@am335x-evm:~# ps aux | grep udhcpd
root 721 0.0 0.4 1956 1204 ? Ss 01:38 0:00 /usr/sbin/udhcpd -S /etc/udhcpd.conf
root 910 0.0 0.3 1960 980 ttyS0 S+ 01:39 0:00 grep udhcpd

Best regards,
Kemal

0 sanjeev majumdar over 9 years ago in reply to Kemal R. Shakir

Intellectual 340 points

hi Kemal

i dint find the /etc/udhcpd.conf & /etc/init.d/busybox-udhcpd in my filesystem. im using arago-base-tisdk-image-am335x-evm-20160405224338.rootfs

0 Kemal R. Shakir over 9 years ago in reply to sanjeev majumdar

TI__Guru 55345 points

Just place these files on appropriate paths

/etc/https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/791/udhcpd.conf
/etc/init.d/https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/791/busybox_2D00_udhcpd

and run this command.

update-rc.d busybox-udhcpd defaults 20

0 sanjeev majumdar over 9 years ago in reply to Kemal R. Shakir

Intellectual 340 points

Hi Kemal

thanks i could run the DHCP server on eth0 and verify whether its providing ip to clients.

now similarly i want to run DHCP server on wlan module present in am335xevm and how to check the wlan functionality

kindly support and thank u for your valuable support

0 Kemal R. Shakir over 9 years ago in reply to sanjeev majumdar

TI__Guru 55345 points

Switch back to interface wlan0 in /etc/udhcpd.conf and add the auto wlan0 line in /etc/network/interfaces to bring up the interface during boot up. The interface must have an IP address to be able to start the DHCP server on it.
You can check the wlan functionality with the tools provided by iw and wireless-tools packages.

0 sanjeev majumdar over 9 years ago in reply to Kemal R. Shakir

Intellectual 340 points

Hi kemal

is any wlan module is present in am335xevm??? coz i found in hw guide as "There is a Wireless LAN and Bluetooth card connector on the GP EVM. This connector contains a card with a WL1271 WLAN/BT module and integrated antenna.". so as per the suggestion given by you i will be able to see the wfi network availability? coz wen i change the /etc/network/interfaces and provide

auto wlan0
iface wlan0 inet static
        address 192.168.0.2
        netmask 255.255.255.0
        wireless-essid sanjeevwifi
        wireless-mode Managed
        wireless-key sanjeevpwd

iam getting the error as 

Configuring network interfaces... Error for wireless request "Set Encode" (8B2A) :
    invalid argument "sanjeev".
Error for wireless request "Set Mode" (8B06) :
    SET failed on device wlan0 ; No such device.
Error for wireless request "Set ESSID" (8B1A) :
    SET failed on device wlan0 ; No such device.

what could be the problem

0 Kemal R. Shakir over 9 years ago in reply to sanjeev majumdar

TI__Guru 55345 points

Which SDK version you use? You can turn to WiLink™ WiFi + Bluetooth Forum regarding this issue.

0 teklike over 8 years ago in reply to Kemal R. Shakir

Intellectual 420 points

HI Kemal,

Since there is no external dhcp, should n't the eth0 (the interface used by udhcpd) be assigned a static address? I tried to do that by editing the /etc/network/interfaces. I assigned static address to be 192.168.1.21
However, at reboot, the Ethernet does not take this ip address (although the system says the link is up). Then I have to run /etc/init.d/networking start to get ifconfig to show the correct ip address. Because (I think) the interface to be used by udhcpd was down, the udhcpd did not launch. So based on your email, I run, /etc/init.d/rc3.d/busybox-udhcpd start.
This gets the udhcpd server also working.
So my question is, what do I need to do, so that at boot, the eth0 comes up running with the correct IP address

0 Kemal R. Shakir over 8 years ago in reply to teklike

TI__Guru 55345 points

Try assigning a static IP as explained at this post and configure the dhcp respectively.

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AM335x DHCP configuration