#!/bin/bash'

# auto-EbNaut by IZ7SLZ july 2017 
#last rev. 08-2018




function process_decode

{


#CALCULATIONS
		CODE=$RATE'K'$CONSTR'A'
                FREQ=$(echo $FREQUENCY-$DIAL |  bc -l)   
                BITS=$(echo $CHAR*6+$CRC+$CONSTR-1 | bc  -l) 
                BITS=$(echo $BITS*$RATE | bc  -l)    # no. of symbols 

                DURAT=$(echo $BITS*$SYM | bc  -l)    # duration of the transmission   
                REC=$(echo $DURAT+ 60 | bc  -l)      # duration of the raw data to read
                
               




echo  $TIMESTAMP  $FREQUENCY'Hz N='$CHAR 'T='$SYM's' $CODE 'CRC='$CRC 'list='$LIST 'sym='$BITS 'Duration='$DURAT's'  >  DECODED1.TXT

echo 'processing +'$REC 'seconds....'

vtread  -v -T $TIMEINIT,'+'$REC /media/iz7slz/Storage/LF |     	# read LF raw
vtcat -p |
vtfilter -v -h bp,f=1500,w=3000 |          			# Pre-filter before blanking
vtblank -v -a15 -d0 -t300 |               			# Typical sferic blanker settings ex 2
vtmult -v -f $FREQ |                       	 		# Mix to baseband I/Q
vtresample -v -r 240 |  	              			# Reduce to 240 sample pairs/sec


vtraw -oa  |                    				# Convert to 3-columns of ASCII
#ebnaut -v -dp$CODE -F0 -N$CHAR -S$SYM -r240 -k$CRC -c2 -L$LIST -T60 -PU | tee -a DECODED1.TXT # Decode phase uniform
ebnaut -v -dp$CODE -F0 -N$CHAR -S$SYM -r240 -k$CRC -c2 -L$LIST -T60 -PS  | tee -a DECODED1.TXT # Decode
#ebnaut -v -dp$CODE -F0 -N$CHAR -S$SYM -r240 -k$CRC -c2 -L$LIST -T60 -PS15 | tee -a DECODED1.TXT # Decode p.search15

echo -------------------------------------------------------------------------------------------- >>  DECODED1.TXT


./uploadebnaut  #invoke shell file with curl for upload files to website




DONE=1
}



 
#### main

clear

DONE=1



while DONE=1; do


MINUTO=$(date +%M):$(date +%S)

      
if [ $MINUTO = "29:00" -a  $DONE = 1 ]; then
		DONE=0
		
		TIMEINIT=$(date -u --date='1 hour ago' +%F)_$(date -u --date='1 hour ago' +%H):59:00 # 60s early
		TIMESTAMP=$(date -u  +%F)_$(date -u +%H):00:00
                

#parameters
		FREQUENCY=137470.000
                DIAL=136000
                LIST=1000
                CHAR=15
                SYM=1.5
                CRC=16
                RATE=8
		CONSTR=19
           

                process_decode




elif [ $MINUTO = "59:00" -a  $DONE = 1 ]; then

		DONE=0
		TIMEINIT=$(date -u  +%F)_$(date -u  +%H):29:00  # 60s early
		TIMESTAMP=$(date -u  +%F)_$(date -u  +%H):30:00

#PARAMETERS
		FREQUENCY=137470.000
                DIAL=136000
                LIST=1000
                CHAR=15
                SYM=1.5
                CRC=16
                RATE=8
		CONSTR=19
             
                


		process_decode




fi


sleep 0.5


done