kopia lustrzana https://github.com/jprochazka/adsb-receiver
OGN - Move calibration to a function
romeo-golf
rodzic
4c49429a8a
commit
7c5a1f64a1
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@ -57,6 +57,53 @@ COMPONENT_SERVICE_CONFIG_PATH="/etc/${COMPONENT_SERVICE_SCRIPT_NAME}.conf"
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source ${RECEIVER_BASH_DIRECTORY}/variables.sh
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source ${RECEIVER_BASH_DIRECTORY}/functions.sh
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# To be moved to functions.sh...
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#################################################################################
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# Calculate RTL-SDR device error rate.
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function CalibrateTuner () {
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# Attempt to calibrate the specified tuner using GSM frequencies.
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if [[ -n "$1" ]] ; then
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DERIVED_DEVICE_ID="$1"
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# GSM Band is GSM850 in US and GSM900 elsewhere, should probably try to figure this out...
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DERIVED_GSM_BAND="GSM900"
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# Check if gain has been specified, otherwise use automatic gain.
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if [[ -n "${OGN_GSM_GAIN}" ]] ; then
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DERIVED_GAIN="${OGN_GSM_GAIN}"
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else
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DERIVED_GAIN="-10"
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fi
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# Use the Kalibrate 'kal' binary if available.
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if [[ -x "`which kal`" ]] ; then
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echo -en "\e[33m Calibrating RTL-SDR device using Kalibrate, may take up to 10 minutes...\e[97m"
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DERIVED_GSM_SCAN=`kal -d "${DERIVED_DEVICE_ID}" -g "${DERIVED_GAIN}" -s ${DERIVED_GSM_BAND} 2>&1 | grep "power:" | sort -n -r -k 7 | grep -m1 "power:"`
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DERIVED_GSM_FREQ=`echo ${DERIVED_GSM_SCAN} | awk '{print $3}' | sed -e 's/(//g' -e 's/MHz//g'`
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DERIVED_GSM_CHAN=`echo ${DERIVED_GSM_SCAN} | awk '{print $2}'`
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DERIVED_ERROR=`kal -d "${DERIVED_DEVICE_ID}" -g "${DERIVED_GAIN}" -c "${DERIVED_GSM_CHAN}" 2>&1 | grep "^average absolute error:" | awk '{print int($4)}' | sed -e 's/\-//g'`
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# Otherwise fall back to gsm_scan binary provided with OGN code.
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elif [[ -x "${COMPONENT_PROJECT_DIRECTORY}/gsm_scan" ]] ; then
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echo -en "\e[33m Calibrating RTL-SDR device using gsm_scan, may take up to 20 minutes...\e[97m"
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if [[ "${DERIVED_GSM_BAND}" = "GSM850" ]] ; then
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DERIVED_GSM_OPTS="--gsm850"
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else
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DERIVED_GSM_OPTS=""
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fi
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DERIVED_GSM_SCAN=`gsm_scan --device "${DERIVED_DEVICE_ID}" --gain "${DERIVED_GAIN}" ${DERIVED_GSM_OPTS} | grep "^[0-9]*\.[0-9]*MHz:" | sed -e 's/dB://g' -e 's/\+//g' | sort -n -r -k 2 | grep -m1 "ppm"`
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DERIVED_GSM_FREQ=`echo ${DERIVED_GSM_SCAN} | awk '{print $1}' | sed -e 's/00MHz://g'`
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DERIVED_ERROR=`echo ${DERIVED_GSM_SCAN} | awk '{print int(($3 + $4)/2)}'`
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else
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# No suitable tool found to perform cailbrations.
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echo -en "\e[33m Unable to calibrate RTL-SDR device \"${DERIVED_DEVICE_ID}\"...\e[97m"
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false
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fi
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else
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# No tuner specified.
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echo -en "\e[33m Unable to calibrate unspecified RTL-SDR device...\e[97m"
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false
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fi
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}
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## SET INSTALLATION VARIABLES
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# Source the automated install configuration file if this is an automated installation.
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@ -405,39 +452,6 @@ if [[ ! -c "${COMPONENT_PROJECT_DIRECTORY}/gpu_dev" ]] ; then
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CheckReturnCode
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fi
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# Calculate RTL-SDR device error rate.
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if [[ -z "${OGN_FREQ_CORR}" ]] || [[ -z "${OGN_GSM_FREQ}" ]] ; then
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# Attempt to calibrate if required values are not provided.
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# Should probably confirm if user wishes to calibrate.
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# GSM Band is GSM850 in US and GSM900 elsewhere.
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DERIVED_GSM_BAND="GSM900"
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DERIVED_GAIN="-10"
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# Check for Kalibrates 'kal' binary.
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if [[ -x "`which kal`" ]] ; then
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echo -en "\e[33m Calibrating RTL-SDR device using Kalibrate, may take up to 10 minutes...\e[97m"
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DERIVED_GSM_SCAN=`kal -d "${OGN_DEVICE_ID}" -g "${DERIVED_GAIN}" -s ${DERIVED_GSM_BAND} 2>&1 | grep "power:" | sort -n -r -k 7 | grep -m1 "power:"`
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DERIVED_GSM_FREQ=`echo ${DERIVED_GSM_SCAN} | awk '{print $3}' | sed -e 's/(//g' -e 's/MHz//g'`
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DERIVED_GSM_CHAN=`echo ${DERIVED_GSM_SCAN} | awk '{print $2}'`
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DERIVED_ERROR=`kal -d "${OGN_DEVICE_ID}" -g "${DERIVED_GAIN}" -c "${DERIVED_GSM_CHAN}" 2>&1 | grep "^average absolute error:" | awk '{print int($4)}' | sed -e 's/\-//g'`
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# Otherwise fall back to gsm_scan binary provided with OGN code.
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elif [[ -x "${COMPONENT_PROJECT_DIRECTORY}/gsm_scan" ]] ; then
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echo -en "\e[33m Calibrating RTL-SDR device using gsm_scan, may take up to 20 minutes...\e[97m"
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if [[ "${DERIVED_GSM_BAND}" = "GSM850" ]] ; then
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DERIVED_GSM_OPTS="--gsm850"
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else
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DERIVED_GSM_OPTS=""
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fi
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DERIVED_GSM_SCAN=`gsm_scan --device "${OGN_DEVICE_ID}" --gain "${DERIVED_GAIN}" ${DERIVED_GSM_OPTS} | grep "^[0-9]*\.[0-9]*MHz:" | sed -e 's/dB://g' -e 's/\+//g' | sort -n -r -k 2 | grep -m1 "ppm"`
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DERIVED_GSM_FREQ=`echo ${DERIVED_GSM_SCAN} | awk '{print $1}' | sed -e 's/00MHz://g'`
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DERIVED_ERROR=`echo ${DERIVED_GSM_SCAN} | awk '{print int(($3 + $4)/2)}'`
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else
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# No suitable tool found to perform cailbrations.
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echo -en "\e[33m Unable to calibrate RTL-SDR device...\e[97m"
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false
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fi
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CheckReturnCode
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fi
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### CREATE THE CONFIGURATION FILE
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# Skip over this dialog if this installation is set to be automated.
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@ -574,6 +588,12 @@ if [[ -z "${OGN_GSM_GAIN}" ]] ; then
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fi
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fi
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# Calculate RTL-SDR device error rate.
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if [[ -z "${OGN_FREQ_CORR}" ]] || [[ -z "${OGN_GSM_FREQ}" ]] ; then
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CalibrateTuner ${OGN_DEVICE_ID}
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CheckReturnCode
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fi
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# Frequency Correction
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if [[ -z "${OGN_FREQ_CORR}" ]] ; then
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if [[ -n "${DERIVED_ERROR}" ]] ; then
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