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modem73 - Added three more modulation types that map to fast speeds

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thetechprepper
2026-06-30 13:32:51 -07:00
parent 832fc11c44
commit a74e19b3cc
1 changed files with 42 additions and 9 deletions
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overlay/opt/emcomm-tools/bin/et-modem73
+42 -9
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@@ -9,6 +9,18 @@
#
# Postconditions:
# 1. modem73 started with sane defaults
#
# Notes:
#
# modem73 supports many modulation types and configuration options. To
# keep usage simple, only five modulation settings have been configured
# that map to a combination of reliability and speed for most general
# purpose applications.
#
# In all cases, normal frames and 1/2 coding rate is used.
#
# There are faster speeds, but EmComm Tools has the design goal of
# getting the message through and favoring delivery over speed..
MODEM73_CONF_FILE="${HOME}/.config/modem73/settings"
@@ -16,8 +28,10 @@ usage() {
echo "usage: $(basename $0) <mode> [options]"
echo " <mode>"
echo " reliability - Max reliability (Slower Speed) [BPSK]"
echo " balanced - Balanced (Reliability and Speed) [QPSK]"
echo " speed - Max speed (Lower Reliability) [8PSK]"
echo " balanced - Balanced (Reliability and Speed) [QPSK] RECOMENDED"
echo " fast - Fast (Low Reliability) [8PSK]"
echo " faster - Faster (Lower Reliability) [QAM16]"
echo " fastest - Fastest (Lowest Reliability) [QAM64]"
echo ""
echo " [options]"
echo " --headless - Run modem73 headless"
@@ -25,6 +39,7 @@ usage() {
HEADLESS=""
MODE=""
MODE_ARGS=""
CALLSIGN="N0CALL"
for arg in "$@"; do
@@ -32,7 +47,7 @@ for arg in "$@"; do
--headless)
HEADLESS="--headless"
;;
reliability|balanced|speed)
reliability|balanced|fast|faster|fastest)
if [[ -n "${MODE}" ]]; then
et-log "Only one mode may be specified."
usage
@@ -49,11 +64,29 @@ for arg in "$@"; do
done
if [[ -z "${MODE}" ]]; then
et-log "Can't started modem73. Mode not specified."
usage
exit 1
et-log "Can't started modem73. Mode not specified."
usage
exit 1
fi
case "${MODE}" in
reliability)
MODE_ARGS="--modulation BPSK --normal --rate 1/2"
;;
balanced)
MODE_ARGS="--modulation QPSK --normal --rate 1/2"
;;
fast)
MODE_ARGS="--modulation 8PSK --normal --rate 1/2"
;;
faster)
MODE_ARGS="--modulation QAM16 --normal --rate 1/2"
;;
fastest)
MODE_ARGS="--modulation QAM64 --normal --rate 1/2"
;;
esac
[[ -z ${ET_LOG_DIR} ]] && ET_LOG_DIR="${HOME}/.local/share/emcomm-tools"
[[ ! -e ${ET_LOG_DIR} ]] && mkdir -p ${ET_LOG_DIR}
@@ -73,12 +106,12 @@ start() {
INPUT_AUDIO=$(modem73 --list-audio | grep input | grep $ALSA_DEVICE | cut -d":" -f3)
OUTPUT_AUDIO=$(modem73 --list-audio | grep output| grep $ALSA_DEVICE | cut -d":" -f3)
CMD="modem73 --input-device ${INPUT_AUDIO} --output-device ${OUTPUT_AUDIO} --ptt rigctl --callsign ${CALLSIGN} ${HEADLESS}"
et-log "Starting modem73 with: '${CMD}'"
CMD="modem73 --input-device ${INPUT_AUDIO} --output-device ${OUTPUT_AUDIO} --ptt rigctl --callsign ${CALLSIGN} ${MODE_ARGS} ${HEADLESS}"
et-log "Starting modem73 in mode ${MODE} with: '${CMD}'"
echo
${CMD}
else
et-log "Error updating configuration. Can't start modem73"
et-log "Error configurating modem. Can't start modem73"
exit 1
fi
}