#!/bin/bash
#
# This is used by logan.erl to start an acquisition port.  It can be
# used stand-alone as well.
#
# The script needs two parameters: the raw aqcuisition driver that
# generates binary data on stdout (e.g. saleae), and the protocol
# filter that parses that data and produces some other protocol on
# stdout.

[ ! -z "$1" ] && DEV="$1"
[ ! -z "$2" ] && TYPE="$2"

[ -z "$DEV" ] && echo "DEV not set (saleae, ...)">&2 && exit 1
[ -z "$TYPE" ] && echo "analyzer TYPE not set (uart, ...)">&2 && exit 1

case "$DEV" in
    saleae)
        INPUT=$(dirname $0)/dev/saleae.sh
        ;;
    *)
        echo "DEV=$DEV unknown">&2
        exit 1
        ;;
esac

FILTER="$(dirname $0)/target/release/logan"
[ ! -x "$FILTER" ] && echo "Need $FILTER">&2 && exit 1

# Note that all input drivers need to exit when their stdin closes.
$INPUT | "$FILTER" $TYPE