me making things: RIHLA - Building the router

Building a router suitable for RIHLA to use:

router is to be Asus WL520GU, with OpenWrt
router is to run as an AP (wanted to run as client also, but WPA2 doesn't seem to work, so gave up on that)
router is to be able to use UVC USB cameras
router is to have ser2net (maybe get python and pyserial on it?)

building custom firmware of OpenWrt with my specs:

current release is Backfire 10.03 final. got info from https://dev.openwrt.org/wiki/GetSource.

$ cd ~/projects/router/
$ svn co svn://svn.openwrt.org/openwrt/branches/backfire
   Checked out revision 31360.
$ sudo apt-get install build-essential subversion libncurses5-dev zlib1g-dev gawk bison gcc flex
$ cd backfire
$ ./scripts/feeds update -a (this should upgrade to the latest
$ make menuconfig

(note the target system default was Target System (Broadcom BCM947xx/953xx)[2/4] which i think is the 2.4 kernel, and i wanted the 2.6 kernel)

  │ │     Target System (Broadcom BCM947xx/953xx)  --->    (default was
  │ │     Target Profile (Broadcom BCM43xx WiFi (default))  --->                                                           
  │ │ <*> busybox................................ Core utilities for embedded Linux  --->
                        coreutils <*>nohup, <*>stty, <*>who
  │ │     Network  --->
                        < > ppp
Kernel Modules
Filesystems  --->
  │ │ <*> kmod-fs-ext4..................................... EXT4 filesystem support
USB Support --->
  │ │ <*> kmod-usb-core............................................ Support for USB
  │ │ <*> kmod-usb-ohci............................... Support for OHCI controllers
  │ │ <*> kmod-usb-serial..................... Support for USB-to-Serial converters
  │ │ <*>   kmod-usb-serial-ftdi............................ Support for FTDI devices
  │ │ --- kmod-usb-storage..................................... USB Storage support
  │ │ <*> kmod-usb-storage-extras.................... Extra drivers for usb-storage
  │ │ < > kmod-usb-uhci............................... Support for UHCI controllers (NEW)
  │ │ <*> kmod-usb-video............................. Support for USB video devices
  │ │ <*> kmod-usb2................................... Support for USB2 controllers   
Video Support --->
  │ │ <*> kmod-video-core...................................... Video4Linux support
  │ │ < >   kmod-video-gspca-core................ GSPCA webcam core support framework (NEW)  --->
  │ │ <*>   kmod-video-uvc............................. USB Video Class (UVC) support

Save the configuration, then

$ make world V=99

This will take a WHILE... (about 1 hour)

flash the router with the custom firmware:

do 30/30/30 reset on router

while powered on, press the reset (NOT the ez setup button) for 30 secs

while still pressing the reset button, pull off the power, for 30 secs

while still pressing the reset button, power on for 30 secs

this sequence should leave the router in a reset mode.

set up the connecting computer to talk to the router

laptop$ sudo ifconfig eth0 down
laptop$ sudo ifconfig eth0 up 192.168.1.2

connect laptop to router LAN1 using ethernet cable

$ cd bin/brcm47xx
$ tftp 192.168.1.1
tftp> binary
tftp> rexmt 1
tftp> put openwrt-brcm47xx-squashfs.trx
Sent nnnn bytes in 4.1 seconds
tftp> quit

set up access to the router:

telnet into the router

telnet 192.168.1.1
$ passwd # set passwd, to disable telnet, and enable ssh

now should be able to ssh in

$ ssh root@192.168.1.111

modify some configs:

vi /etc/system
config system
    option hostname RIHLA
    option timezone CST

vi /etc/config/network
#### VLAN configuration
config switch eth0
    option enable   1
config switch_vlan eth0_0
    option device   "eth0"
    option vlan     0
    option ports    "1 2 3 4 5"
config switch_vlan eth0_1
    option device   "eth0"
    option vlan     1
    option ports    "0 5"
#### Loopback configuration
config interface loopback
    option ifname   "lo"
    option proto    static
    option ipaddr   127.0.0.1
    option netmask  255.0.0.0
#### LAN configuration
config interface lan
    option type     bridge
    option ifname   "eth0.0"
    option proto    static
    option ipaddr   192.168.1.111
    option netmask  255.255.255.0
#### WAN configuration
config interface    wan
    option ifname   "eth0.1"
    option proto    dhcp

adding extra packages to the router:

downloaded packages from http://backfire.openwrt.org/10.03/brcm47xx/packages/
libjpeg_6b-1_brcm47xx.ipk
libpthread_0.9.30.1-42_brcm47xx.ipk
librt_0.9.30.1-42_brcm47xx.ipk
mjpg-streamer_r84-2_brcm47xx.ipk
ser2net_2.7-2_brcm47xx.ipk
to install a package, scp the package to the router from the directory in the router that has the package

  $ opkg install libjpeg_6b-1_brcm47xx.ipk

if there is a dependency, opkg will tell you so, then download and install the dependency package first

to check the builtin support:

the dmesg command gives a lot of nice info about the peripherals

$ dmesg
Linux version 2.6.32.27
...
Serial: 8250/16550 driver, 2 ports, IRQ sharing enabled
serial8250: ttyS0 at MMIO 0xb8000300 (irq = 3) is a 16550A
serial8250: ttyS1 at MMIO 0xb8000400 (irq = 3) is a 16550A
serial8250.0: ttyS0 at MMIO 0xb8000300 (irq = 3) is a 16550A
serial8250.0: ttyS1 at MMIO 0xb8000400 (irq = 3) is a 16550A
...
usbcore: registered new interface driver usbserial
USB Serial support registered for generic
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial Driver core
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
...
Linux video capture interface: v2.00
USB Serial support registered for FTDI USB Serial Device
usbcore: registered new interface driver ftdi_sio
ftdi_sio: v1.5.0:USB FTDI Serial Converters Driver
usbcore: registered new interface driver uvcvideo
USB Video Class driver (v0.1.0)
usb 2-1: new high speed USB device using ohci_hcd and address 2
usb 2-1: configuration #1 chosen from 1 choice

so we see that we have support for usb, ftdi serial, uvc video

TODO:
explain more about
ls /etc/modules
lsmod