Shell scripts

Shell scripts are scripts written for the shell (dash, bash, or ash) of an operating system. To find out which shell, you are using, try something like:

rgetz@pinky ~ $ which sh
/usr/bin/sh
rgetz@pinky ~ $ ls -l /usr/bin/sh
lrwxrwxrwx 1 root root 9 2009-05-13 20:39 /usr/bin/sh -> /bin/bash

OR

rgetz@pinky ~ $ ps -p $$
  PID TTY          TIME CMD
 1321 pts/0    00:00:00 bash

To check out these scripts, simply do something like:

rgetz@pinky ~ $ git clone `linux_image_ADI-scripts <https://github.com/analogdevicesinc/linux_image_ADI-scripts>`_.git

This should give you the most up to date scripts.

Linux scripts

Enabling a static IP address

By default, the Linux setup provided by ADI will try to automatically get an IP address from the network using DHCP. To instead use a static IP instead, do the following:

root@linaro-ubuntu-desktop:~# sudo adi_update_tools.sh
root@linaro-ubuntu-desktop:~# sudo enable_static_ip.sh <IP address>

In more detail, first make sure the latest software is installed on the host so the enable_static_ip.sh script is available. Then it can be used to set a static IP address for a network interface (defaults to eth0). Note that the specified IP address should generally be an unused one on the same subnet the device is getting added to. As a warning, note that these scripts will overwrite /etc/network/interfaces so do not run them on devices where you have specifically customized the network configuration.

An interface can be specified as the second argument otherwise the script defaults to eth0, e.g. in order to use 192.168.0.2 for eth1 run the following:

root@linaro-ubuntu-desktop:~# sudo enable_static_ip.sh 192.168.0.2 eth1

In order to revert back to acquiring IP addresses for all interfaces via DHCP use the following:

root@linaro-ubuntu-desktop:~# sudo enable_dhcp.sh

Scripts for FMCOMMS boards

DDS passing by

#!/bin/sh

# find the DAC
for i in $(find /sys -name name) do
  if [ "`cat $i`" = "cf-ad9361-dds-core-lpc" ] ; then
     dac_path=$(echo $i | sed 's:/name$::')
  fi
done

#save the current settings
init=`cat $dac_path/out_altvoltage0_TX1_I_F1_frequency`

sampl=`cat $dac_path/out_altvoltage_TX1_I_F1_sampling_frequency`
ny=`expr $sampl / 2`

# Set DDSn_A
freq_A(){
  echo $1 > $dac_path/out_altvoltage0_TX1_I_F1_frequency echo $1 >
  $dac_path/out_altvoltage2_TX1_Q_F1_frequency echo $1 >
  $dac_path/out_altvoltage4_TX2_I_F1_frequency echo $1 >
  $dac_path/out_altvoltage6_TX2_Q_F1_frequency
}

# Set DDSn_B
freq_B(){
  echo $1 > $dac_path/out_altvoltage3_TX1_Q_F2_frequency echo $1 >
  $dac_path/out_altvoltage1_TX1_I_F2_frequency echo $1 >
  $dac_path/out_altvoltage7_TX2_Q_F2_frequency echo $1 >
  $dac_path/out_altvoltage5_TX2_I_F2_frequency
}

for i in `seq 1000000 1000000 $ny` do
  freq_A $i
  freq_B `expr $ny - $i`
  sleep 1
done

freq_A $init
freq_B $init

Random data on the RF output

#!/bin/sh

# buffer size, let's use 512 samples, or 1024 bytes
buffer_size=1024

# find the DAC
for i in $(find /sys -name name) do
  if [ "`cat $i`" = "cf-ad9361-dds-core-lpc" ] ; then
     dac_path=$(echo $i | sed 's:/name$::')
  fi
done

# Get the associated dev file
dev=/dev/$(echo $dac_path |  awk -F "/" '{print $NF}')
if [ ! -c $dev ] ; then
  echo "Can't find device $dev"
  exit
fi

# set the buffer size
echo $buffer_size > $dac_path/buffer/length

# generate the random data, and give it to the DAC
dd if=/dev/urandom of=$dev bs=$buffer_size count=1

#enable things
echo 1 > $dac_path/buffer/enable

#Wait 5 seconds
sleep 5

#turn if off before we bring down everyone's WiFi
echo 0 > $dac_path/buffer/enable

Setting the amplitude

I don’t like remembering what 1/32 is, so I just use \(1/(2^n)\) . You just need to provide ‘n’.

#!/bin/sh

#check in the input
if [ $1 -le -1 ] ; then
  echo "input out of range, (needs to be 0-15)" exit
fi

if [ $1 -ge 16 ] ; then
  echo "input out of range (needs to be 0-15)" exit
fi

# find the DAC
for i in $(find /sys -name name 2>/dev/null) do
  if [ "`cat $i`" = "cf-ad9361-dds-core-lpc" ] ; then
     dac_path=$(echo $i | sed 's:/name$::')
  fi
done

echo $(echo "scale=6; 1 / ( 2 ^ $1 )" | bc) > $dac_path/out_altvoltage0_TX1_I_F1_scale
echo $(echo "scale=6; 1 / ( 2 ^ $1)" | bc) > $dac_path/out_altvoltage1_TX1_I_F2_scale
echo $(echo "scale=6; 1 / ( 2 ^ $1 )" | bc) > $dac_path/out_altvoltage2_TX1_Q_F1_scale
echo $(echo "scale=6; 1 / ( 2 ^ $1 )" | bc) > $dac_path/out_altvoltage3_TX1_Q_F2_scale
echo $(echo "scale=6; 1 / ( 2 ^ $1 )" | bc) > $dac_path/out_altvoltage4_TX2_I_F1_scale
echo $(echo "scale=6; 1 / ( 2 ^ $1)" | bc) > $dac_path/out_altvoltage5_TX2_I_F2_scale
echo $(echo "scale=6; 1 / ( 2 ^ $1 )" | bc) > $dac_path/out_altvoltage6_TX2_Q_F1_scale
echo $(echo "scale=6; 1 / ( 2 ^ $1 )" | bc) > $dac_path/out_altvoltage7_TX2_Q_F2_scale

echo -n "amplitude set to "
cat $dac_path/out_altvoltage0_TX1_I_F1_scale

Sweeping the Tx

#!/bin/sh

# find the TX LO generator
for i in $(find /sys -name name) do
  if [ "`cat $i`" = "ad9361-phy" ] ; then
     tx_lo_path=$(echo $i | sed 's:/name$::')
  fi
done

if [ -z $tx_lo_path ] ; then
  echo "Can't find ad9361-phy"
  exit 1
fi

start=$1
end=$2
inc=$3
pause=$4

if [ -z $start ] ; then
  start=100
fi

if [ -z $end ] ; then
  end=6000
fi

if [ -z $inc ] ; then
  inc=5
fi

if [ -z $pause ] ; then
  pause=1
fi

freq_tx() {
  echo $1 > $tx_lo_path/out_altvoltage1_TX_LO_frequency
}

for i in `seq $start $inc $end`; do
  echo $i freq_tx `expr $i \\* 1000000`
  sleep $pause
done