Comms Controller Hardware Setup - Cerfboard and Modem Initial Configuration

The following steps configure new hardware for use in the Iridium Comms Controller package:

Modem Configuration

• Install the SIM card, establish comms from a terminal program at 38400 N81, then set PIN code as follow:

  1. AT+CPIN?
     Response: SIM PIM (it is locked)

  2. AT+CPIN="1111"
     Response: OK (to unlock)

  3. AT+CLCK="SC",0,"1111"
     Response: OK

  4. The modem is ready to use
     AT+CPIN? now gives response of SIM PIN2 (means ready)

Modem Manual Testing

• Test the modem using a terminal program set to 9600 n81 as follows:
  • Modem OK?: send AT - responds OK

  • Modem registered with sat?: send AT+CREG? - responds +CREG:000,001 (in home area)

  • Enter an SBD text message: send AT+SBDWT=this is my message - responds OK

  • Send the message: send AT+SBDI - responds +SBDI: 1, [some seq number], 0, 0, 0, 0 (e.g.: +SBDI: 1, 2317, 0, 0, 0, 0)

Cerfboard Configuration

• Get the Cerfboard running with a 38400 N81 terminal at TTYS0 (the console port); be sure to start the terminal software first, then power up the Cerfboard.
  1. At the login prompt: root, then passwd: rootme

  2. Setup networking by making static IP and setting all as follows:
     1. ifswitch-to-static
     2. ifedit
        • IP: 128.128.21.11 (elrond)
        • mask: 255.255.252.0
        • gate: 128.128.20.1
     3. Edit resolv.conf for DNS, etc.

  3. Edit /etc/bash.bashrc to add:
     1. PS1="\h:\w\\$ "
     2. alias ls='ls --color -F -T 0'

  4. Test ssh

  5. Install some packages:
     1. ipkg install procps to install 'ps'
     2. ipkg install fdisk
     3. Download minicom_2.00.0_arm.ipk from Intrinsyc and install:
        1. download using ftp or scp
        2. ipkg install minicom.....ipk
        3. configure for ttyS4, N81 (LOGR port)
     4. ipkg install ntpdate to set system time (as follows):
        1. ntpdate time.whoi.edu
        2. hwclock --systohc

  6. Remember: cat /proc/meminfo to see memory usage

  7. Put iridium stuff in /root/iridium/

  8. Put "iridium" script in /etc/init.d and make executable:

     #!/bin/sh
     /root/iridium/do-iridium.long /root/iridium/ird-temp logr53

  9. In /etc/rc2.d/, symlink S95iridium and S90local :

     ln -s ../init.d/iridium S95iridium
     ln -s ../init.d/local S90local

  10. Test it all!