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thetechprepper
114 lines
2.7 KiB
Bash
Executable File
114 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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#
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# Author : Gaston Gonzalez
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# Date : 16 July 2026
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# Purpose : Wrapper script for starting Mercury with PnP support
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#
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# Preconditions:
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# 1. Supported radio and audio interface are connected and properly detected
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#
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# Postconditions:
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# 1. Mercury started with sane defaults
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#
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# Notes:
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#
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# Mercury supports many modulation types and configuration options. To
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# keep usage simple, only three modulation settings have been configured
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# that map to a combination of reliability and speed for most general
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# purpose applications.
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#
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# The DATAC17 and QAM16C2 modes are documented on the RETICULUM.md
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# documenation on the mercury GitHub project, but are not yet supported
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# in version 1.9.9. Disabling these options from now.
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usage() {
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echo "usage: $(basename $0) <mode>"
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echo " <mode>"
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echo " reliability - Max reliability (Slower Speed) [DATAC1]"
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echo " balanced - Balanced (Reliability and Speed) [DATAC17]"
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echo " fast - Fast (Low Reliability) [QAM16C2]"
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}
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if [[ $# -ne 1 ]]; then
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et-log "Can't started Mercury modem. Mode not specified."
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usage
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exit 1
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fi
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MODE="$1"
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case "${MODE}" in
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reliability)
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MODE_INDEX="0"
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;;
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balanced)
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MODE_INDEX="9"
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et-log "Mode not yet supported."
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exit 1
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;;
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fast)
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MODE_INDEX="10"
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et-log "Mode not yet supported."
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exit 1
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;;
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*)
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et-log "Can't started Mercury modem. Mode not supported."
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usage
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exit 1
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;;
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esac
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[[ -z ${ET_LOG_DIR} ]] && ET_LOG_DIR="${HOME}/.local/share/emcomm-tools"
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[[ ! -e ${ET_LOG_DIR} ]] && mkdir -p ${ET_LOG_DIR}
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start() {
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update_config
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if [[ $? -eq 0 ]]; then
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systemctl is-active --quiet rigctld
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if [[ $? -ne 0 ]]; then
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et-log "Can't start Mercury. rigctld not running. Ensure radio is selected."
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exit 1
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fi
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ALSA_DEVICE=$(et-system-info et-audio-card)
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CMD="mercury -m ${MODE_INDEX} -i plughw:${ALSA_DEVICE} -o plughw:${ALSA_DEVICE} -A 127.0.0.1:4532"
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et-log "Starting Mercury in mode ${MODE} with: '${CMD}'"
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echo
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${CMD}
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else
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et-log "Error configurating modem. Can't start Mercury"
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exit 1
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fi
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}
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update_config () {
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et-log "Attempting to start Mercury in mode: '${MODE}'"
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# 1. Check if the symlink was created by the udev rules
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if [[ -e /dev/et-audio ]]; then
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# 2. Check that this device was properly tagged with the ET_AUDIO env variable with a udev rule
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APLAY_OUT=$(arecord -l | grep ET_AUDIO)
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if [[ $? -eq 0 ]]; then
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# Configure ALSA settings for sound card
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/opt/emcomm-tools/bin/et-audio update-config
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else
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et-log "No ET_AUDIO device detected."
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exit 1
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fi
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else
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et-log "No ET_AUDIO device plugged in."
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exit 1
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fi
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}
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start
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