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Gaston Gonzalez
68 lines
1.4 KiB
Bash
Executable File
68 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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#
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# Author : Gaston Gonzalez
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# Date : 24 December 2024
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# Purpose : Wrapper script for minimodem
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#
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# Preconditions:
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# 1. DigiRig Lite is set in et-radio and connected
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usage() {
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echo "usage: $(basename $0) <command> <file>"
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echo " <command>"
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echo " tx-file - File to transmit"
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echo " rx-file - Save incoming transmition to file"
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echo ""
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echo "The baud rate can be set with the BAUD_RATE environment variable"
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echo "It defaults to 1200 if not specified."
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echo "BAUD_RATE=300 /et-minimodem tx-file /etc/motd"
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}
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if [ $# -ne 2 ]; then
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usage
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exit 1
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fi
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FILE=$2
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# Allow users to override baud rate via an environment variable.
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# For example: BAUD_RATE=300 /et-minimodem tx-file /etc/motd
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if [ -z ${BAUD_RATE} ]; then
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BAUD_RATE=1200
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fi
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case $1 in
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tx-file)
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AUDIO_DEV=$(et-system-info et-audio)
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if [ "${AUDIO_DEV}" != "DigiRig Lite" ]; then
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et-log "Minimodem only supports the DigiRig Lite. You have a '$AUDIO_DEV'"
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exit 1
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fi
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AUDIO_CARD=$(et-system-info et-audio-card)
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if [ $? -ne 0 ]; then
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et-log "No audio device detected."
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exit 1
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fi
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ALSA_DEV="plughw:${AUDIO_CARD}"
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if [ ! -e ${FILE} ]; then
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et-log "File ${FILE} does not exist."
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exit
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fi
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cat ${FILE} | minimodem --tx --alsa=${ALSA_DEV} ${BAUD_RATE}
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;;
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rx-file)
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echo "Not yet implemented"
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;;
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*)
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echo "Invalid command."
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usage
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exit 1
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;;
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esac
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