====Roach 2====

Jack Hickish gave me a Roach2 to try to test.

==Links==

  * Jack says this is the image to use: acme1:/srv/tftpboot/uboot-roach2/uImage-r2borph3
  * [[https://casper.berkeley.edu/wiki/ROACH_NFS_guide]]
  * [[https://casper.berkeley.edu/wiki/Getting_Started_with_ROACH2]]
  * [[https://casper.berkeley.edu/wiki/ROACH-2_Revision_2]]
  * [[https://github.com/F5OEO/rpidatv]]

====The Roach board====

I pluged in USB to the port labeled "FTDI USB". On my MAC "screen /dev/tty.usbserial-FA1302 115200" started the terminal session. 

  U-Boot 2011.06-rc2-00000-gd422dc0-dirty (Nov 08 2012 - 16:04:14)

  CPU:   AMCC PowerPC 440EPx Rev. A at 533.333 MHz (PLB=133 OPB=66 EBC=66)
       No Security/Kasumi support
       Bootstrap Option C - Boot ROM Location EBC (16 bits)
       32 kB I-Cache 32 kB D-Cache
  Board: ROACH2
  I2C:   ready
  DRAM:  512 MiB
  Flash: 128 MiB
  In:    serial
  Out:   serial
  Err:   serial
  CPLD:  2.1
  USB:   Host(int phy)
  SN:    ROACH2.2 batch=D#6#53 software fixups match
  MAC:   02:44:01:02:06:35
  DTT:   1 is 26 C
  DTT:   2 is 24 C
  Net:   ppc_4xx_eth0
  
So, I need to set up TFTP to get this to boot an OS.

The Roach2 requires network boot and a TFTP server on that server. I set up the sonata1 server (10.1.49.80, sonata, polaris).

  apt-get install dnsmasq
 
Then edited the /etc/dnsmasq.conf file wit these values:

  # Assign the ROACH an IP address manually, based on its MAC
  dhcp-host=02:44:01:02:06:35,10.1.49.171
  
  # Have a DHCP address range for other things
  dhcp-range=10.1.49.0,static
  
  # Set the location of the ROACH's root filesystem on the NFS server.
  #dhcp-option=17,10.1.49.80:/srv/boot_roach2/etch
  dhcp-option=17,10.1.49.80:/srv/boot_roach2/squeeze_root.ppc
  
  # Set the boot filename for BOOTP, which is what the ROACH boots over
  dhcp-boot=uImage-r2borph3
  
  # Enable dnsmasq's built-in TFTP server. Required for BOOTP.
  enable-tftp
  
  # Set the root directory for files availble via FTP.
  tftp-root=/srv/boot_roach2/boot
  
  # Set the DHCP server to authoritative mode (then keep away from other networks!)
  dhcp-authoritative
  
  #Specify which ethernet interface you use to connect to the ROACH (eth0, eth1, eth2 ...)
  interface=eth0
  
  #May be useful if you have several ethernet interfaces
  bind-interfaces
  
  log-queries
  log-facility=/var/log/dnsmasq.log
  
  server=8.8.8.8
  server=8.8.4.4
  dhcp-option=option:ntp-server,198.137.202.56,198.137.202.56,74.120.81.219,97.127.86.125

Then to restart dnsmasq:

  sudo /etc/init.d/dnsmasq restart
  
mount -o remount,rw /

Also had to install NTP, as the instructions at [[https://casper.berkeley.edu/wiki/ROACH_NFS_guide]]

====The ADC boards====

Here is the basic hardware description: [[https://casper.berkeley.edu/wiki/ADC2x1000-8]]

====The 2GHz clock====

I was able pr procure a $35 ADF4351_PLL board, from China, and control it with my Raspberry Pi. Here is a picture of the board tuned to 2GHz. This will be used for the clock input of the ADC board. This requires a 10MHz reference signal.

The controller program is at [[https://github.com/F5OEO/rpidatv]], called adf4351
To tune it to 2GHz: "./adf4351 2000.0 10000000"

{{:img_2847_1_.jpg?600|}}