Batch programming for msp430 under linux

#!/bin/bash

# Script for batch programming of several devices.
# Specifically written for msp430 devices, but if
# you want to program another device just modify
# the program() function
#
# Usage:
# ./patch_program.sh binary_file.ihex
#
# Jose Luis Honorato, 2012


# Checks if the device in a specific port was correctly programmed
# Arguments:
#   1. Dump file name
#   2. Port name
function check_output() {

    local port_name=$2
    local dump_file_name=$1

        echo -n "Device at port $port_name "
    # The string "Traceback" is present whenever an exception
    # occurred during the programming. It could be replaced
    # with any other string
    if grep -q "Traceback" $dump_file_name; then
        echo "failed!"
    else
        echo "OK"
    fi
}

# Programs a
# Arguments:
#   1. Port name
#   2. Port number
#   3. binary file name
function program() {

    local port_name=$1
    local port_number=$2
    local bin_file_name=$3

    # Ready to program, put the output into a file. We cannot add the & symbol
    # to this line because we need to wait for the programming to be finished
    # in order to analyze the dump file.
    echo -e "Programming port $port_name"
    export dump_file=$(echo $"dump$port_number.txt")
    # Programs and writes the output to the file
    (./goodfet.bsl -c $port_name -r -e -I -p -S 38400 $bin_file_name) &> $dump_file

    # Check if it was correctly programmed
    (check_output $dump_file $port_name) | tee -a script_status.txt
    exit
}

function check_input_parameters() {
    case "$#" in

    0)  # If no arguments are passed a default file name is used
        echo "No arguments passed, assuming default binary: $default_bin_file_name"
        bin_file_name=$default_bin_file_name
        ;;
    *)  # If there is more than one argument then discard them
        if [ "$#" -gt "1" ]; then
            echo "Too many arguments ($#), using only the first one"
        fi
        bin_file_name=$1
        # Get binary file extension and name
        local bin_file_extension=$(echo $bin_file_name | cut -d . -f 2)
        local bin_file_basename=$(basename $bin_file_name ".$bin_file_extension")

        # If it is not ihex then transform it
        if [ $bin_file_extension != "ihex" ]; then
            local old_bin_file_name=$bin_file_name
            bin_file_name="$bin_file_basename.ihex"
            echo "Transforming $old_bin_file_name to $bin_file_name"
            msp430-objcopy --output-target=ihex $old_bin_file_name $bin_file_name
        fi
        ;;
    esac
}

# Main function for batch programming
function main_task() {
    echo -e "\nStarting batch programming"
    default_bin_file_name="bin.ihex"
    bin_bile_name=$default_bin_file_name
    check_input_parameters $@

    # Remove dumps from previous batches
    rm ./dump*.txt
    rm ./script_status.txt

    # Find all available serial ports: ttyUSB (Linux) and tty.usb (Mac OS)
    available_ports=$(find /dev -regextype posix-egrep -iregex "/dev/t.*(ty(USB.|\.usb\w+))")
    echo "Found the following ports:"
    echo $available_ports

    # For each found port program the device
    export port_number=0
    for current_port in $(echo $available_ports)
    do
        program $current_port $port_number $bin_file_name &
        export port_number=$(($port_number + 1))
    done

    # We are done here because the programming happens in parallel
    echo -e "\nRun cat script_status.txt a bit later to see the results\n"
    exit
}


main_task $@