mirror of
https://github.com/romanz/amodem.git
synced 2026-02-07 18:08:03 +08:00
56 lines
1.1 KiB
Bash
Executable File
56 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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set -u
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set -e
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run() {
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echo "SRC $HOST ($DIR): $*" 1>&2
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if [ "$HOST" == "localhost" ]; then
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echo "$*" | bash
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else
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ssh $HOST "cd $DIR; $*"
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fi
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}
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run_src() {
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DIR=${SRC_DIR:-"~/Code/modem"}
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HOST=${SRC_HOST:-localhost}
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run "$*"
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}
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run_dst() {
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DIR=${DST_DIR:-"~/Code/modem"}
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HOST=${DST_HOST:-localhost}
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run "$*"
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}
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run_src true
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run_dst true
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## generate 1Mbit of random data
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run_src dd if=/dev/urandom of=data.send bs=125kB count=1 status=none
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SRC_HASH=`run_src sha256sum data.send`
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# modulate data into audio file
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run_src "./send.py <data.send >tx.int16"
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# stop old recording and start a new one
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run_src killall -q aplay || true
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run_dst killall -q arecord || true
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run_dst "./wave.py record rx.int16" &
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sleep 1 # let rx.int16 be filled
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# play the modulated data
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run_src ./wave.py play tx.int16 &
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# start the receiever
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run_dst "./recv.py <rx.int16 >data.recv"
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# stop recording after playing is over
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run_src killall -q aplay || true
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run_dst killall -q arecord || true
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# verify transmittion
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DST_HASH=`run_dst sha256sum data.recv`
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echo -e "$SRC_HASH\n$DST_HASH" |