kopia lustrzana https://github.com/projecthorus/wenet
update rx chain
xssfox
rodzic
81d4ca49b7
commit
bb2f7b16a5
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@ -14,3 +14,6 @@ test_images
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tx/tx_images/*.jpg
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picam_temp*
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*.log
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benchmarking/generated/
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benchmarking/samples/
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benchmarking/stats.txt
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@ -37,7 +37,8 @@ NORMALISE = True
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# sample_rate = input file sample rate.
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SAMPLES = [
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['wenet_sample_fs921416_float.bin', 115200, -100, 921416], # No threshold set, as signal is continuous.
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# ['wenet_sample_fs921416_float.bin', 115200, -100, 921416], # No threshold set, as signal is continuous.
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['wenet_sample_i2s_fs960000_float.bin', 96000, -100, 960000],
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]
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@ -35,6 +35,12 @@ processing_type = {
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"post_process" : " | wc -c", #
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'files' : "./generated/wenet_sample_fs921416*.bin"
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},
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'wenet_i2s_demod': {
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'demod': '| csdr convert_f_u8 | ../rx/fsk_demod --cu8 -s --stats=100 2 960000 96000 - - 2> stats.txt | ',
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'decode': '../rx/wenet_ldpc - - 2> /dev/null ', #
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"post_process" : " | wc -c", #
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'files' : "./generated/wenet_sample_i2s_fs960000*.bin"
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},
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}
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def run_analysis(mode, file_mask=None, shift=0.0, resample=1.0, verbose=False, log_output = None, dry_run = False, quick=False, show=False):
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@ -27,6 +27,7 @@ fi
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: "${WEB_PORT:=5003}"
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: "${IMAGE_PORT:=7890}"
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: "${UPLOAD_ENABLE:=1}"
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: "${FRAMING_MODE:=drs232_ldpc}"
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# Start up the SSDV Uploader script and push it into the background.
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if [ "$UPLOAD_ENABLE" == "1" ] ; then
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@ -70,14 +71,14 @@ if [ "$SDR_TYPE" = "RTLSDR" ] ; then
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echo "Using Complex Samples."
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rtl_sdr -d "$DEVICE" -s "$SDR_RATE" -f "$RX_SSB_FREQ" -g "$GAIN" - | \
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./fsk_demod --cu8 -s --stats=100 2 "$SDR_RATE" "$BAUD_RATE" - - 2> >(python3 fskstatsudp.py --rate 1 --freq $RX_SSB_FREQ --samplerate $SDR_RATE) | \
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./drs232_ldpc - - -vv 2> /dev/null | \
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./$FRAMING_MODE - - -vv 2> /dev/null | \
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python3 rx_ssdv.py --partialupdate 16 --headless
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elif [ "$SDR_TYPE" = "KA9Q" ] ; then
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# Start receiver
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echo "Starting pcmcat and demodulator"
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pcmcat "$DEVICE" | \
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./fsk_demod --cs16 -s --stats=100 2 "$SDR_RATE" "$BAUD_RATE" - - 2> >(python3 fskstatsudp.py --rate 1 --freq $RX_SSB_FREQ --samplerate $SDR_RATE --image_port $IMAGE_PORT) | \
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./drs232_ldpc - - -vv 2> /dev/null | \
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./$FRAMING_MODE - - -vv 2> /dev/null | \
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python3 rx_ssdv.py --partialupdate 16 --headless --image_port $IMAGE_PORT
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else
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echo "No valid SDR type specified! Please enter RTLSDR or KA9Q!"
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@ -3,9 +3,10 @@
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CC=gcc
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CFLAGS= -O3 -Wall
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all: fsk_demod drs232_ldpc
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all: fsk_demod drs232_ldpc wenet_ldpc
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@cp fsk_demod ../rx/
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@cp drs232_ldpc ../rx/
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@cp wenet_ldpc ../rx/
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@echo "Binaries copied to ../rx/"
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fsk_demod: fsk_demod.o fsk.o kiss_fft.o
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@ -16,7 +17,11 @@ drs232_ldpc: drs232_ldpc.o mpdecode_core.o phi0.o
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@gcc -o drs232_ldpc drs232_ldpc.o mpdecode_core.o phi0.o -lm
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@echo "Built drs232_ldpc"
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wenet_ldpc: wenet_ldpc.o mpdecode_core.o phi0.o
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@gcc -o wenet_ldpc wenet_ldpc.o mpdecode_core.o phi0.o -lm
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@echo "Built wenet_ldpc"
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.c.o: $(CC) $(CFLAGS) -c $< -o $@
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clean:
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rm -f fsk_demod drs232_ldpc *.o
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rm -f fsk_demod drs232_ldpc wenet_ldpc *.o
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@ -0,0 +1,266 @@
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/*---------------------------------------------------------------------------*\
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FILE........: wenet_ldpc.c
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AUTHOR......: David Rowe
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DATE CREATED: Sep 2016
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Looks for a unique word in series of soft decision symbols. When
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found, LDPC decodes, and outputs a frame of packed bytes. Used for high bit
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rate Horus SSTV reception.
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Frame format:
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16 bytes 0x55 - 0xabcdef01 UW - 256 bytes of payload - 2 bytes CRC - 65 bytes LPDC Parity
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Each byte is encoded as a 10 bit RS232 serial word:
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0 LSB .... MSB 1
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Building:
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$ gcc drs232_ldpc.c mpdecode_core.c -o drs232_ldpc -Wall -lm
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\*---------------------------------------------------------------------------*/
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/*
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Copyright (C) 2016 David Rowe
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All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 2.1, as
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published by the Free Software Foundation. This program is
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distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include "mpdecode_core.h"
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/* Machine generated consts, H_rows, H_cols, test input/output data to
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change LDPC code regenerate this file. */
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#include "H2064_516_sparse.h"
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/* states -----------------------------------------------*/
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#define LOOK_FOR_UW 0
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#define COLLECT_PACKET 1
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/* packet parameters */
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#define UW_BYTES 4
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#define UW_BITS 32
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#define UW_ALLOWED_ERRORS 4
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#define BYTES_PER_PACKET 256
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#define CRC_BYTES 2
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#define PARITY_BYTES 65
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#define BITS_PER_BYTE 8
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#define UNPACKED_PACKET_BYTES ((UW_BYTES+BYTES_PER_PACKET+CRC_BYTES)*BITS_PER_BYTE)
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#define SYMBOLS_PER_PACKET (BYTES_PER_PACKET+CRC_BYTES+PARITY_BYTES)*BITS_PER_BYTE
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/* UW pattern we look for, including start/stop bits */
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uint8_t uw[] = {
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1,0,1,0,1,0,1,1,1,1,0,0,1,1,0,1,1,1,1,0,1,1,1,1,0,0,0,0,0,0,0,1
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};
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// from http://stackoverflow.com/questions/10564491/function-to-calculate-a-crc16-checksum
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unsigned short gen_crc16(unsigned char* data_p, int length){
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unsigned char x;
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unsigned short crc = 0xFFFF;
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while (length--){
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x = crc >> 8 ^ *data_p++;
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x ^= x>>4;
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crc = (crc << 8) ^ ((unsigned short)(x << 12)) ^ ((unsigned short)(x <<5)) ^ ((unsigned short)x);
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}
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return crc;
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}
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int main(int argc, char *argv[]) {
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FILE *fin, *fout;
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int state, next_state, i, j, ind, score, verbose;
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float symbol;
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uint8_t bit, bit_buffer[UW_BITS];
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double symbol_buf[SYMBOLS_PER_PACKET];
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float llr[SYMBOLS_PER_PACKET];
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uint8_t unpacked_packet[CODELENGTH];
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uint8_t packet[BYTES_PER_PACKET+CRC_BYTES];
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uint8_t abyte;
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uint16_t tx_checksum, rx_checksum, packet_errors, packets;
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int CodeLength, iter, parityCheckCount;
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struct LDPC ldpc;
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assert(sizeof(uw) == UW_BITS);
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/* LDPC parameters */
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CodeLength = CODELENGTH; /* length of entire codeword in bits */
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/* set up LDPC code from include file constants */
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ldpc.max_iter = MAX_ITER;
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ldpc.dec_type = 0;
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ldpc.q_scale_factor = 1;
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ldpc.r_scale_factor = 1;
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ldpc.CodeLength = CODELENGTH;
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ldpc.NumberParityBits = NUMBERPARITYBITS;
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ldpc.NumberRowsHcols = NUMBERROWSHCOLS;
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ldpc.max_row_weight = MAX_ROW_WEIGHT;
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ldpc.max_col_weight = MAX_COL_WEIGHT;
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ldpc.H_rows = H_rows;
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ldpc.H_cols = H_cols;
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/* process command line ----------------------------------------------*/
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if (argc < 3) {
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fprintf(stderr, "usage: drs232 InputOneSymbolPerFloat OutputPackets [-v[v]]\n");
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exit(1);
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}
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if (strcmp(argv[1], "-") == 0) fin = stdin;
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else if ( (fin = fopen(argv[1],"rb")) == NULL ) {
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fprintf(stderr, "Error opening input file: %s: %s.\n",
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argv[1], strerror(errno));
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exit(1);
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}
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if (strcmp(argv[2], "-") == 0) fout = stdout;
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else if ( (fout = fopen(argv[2],"wb")) == NULL ) {
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fprintf(stderr, "Error opening output file: %s: %s.\n",
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argv[2], strerror(errno));
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exit(1);
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}
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verbose = 0;
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if (argc > 3) {
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if (strcmp(argv[3], "-v") == 0) {
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verbose = 1;
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}
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if (strcmp(argv[3], "-vv") == 0) {
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verbose = 2;
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}
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}
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state = LOOK_FOR_UW;
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memset(bit_buffer,0, sizeof(bit_buffer));
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packet_errors = packets = 0;
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while(fread(&symbol, sizeof(float), 1, fin) == 1) {
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/* make hard decision for purpose of UW detection */
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bit = symbol < 0;
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//printf("symbol; %f bit: %d\n", symbol, bit);
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next_state = state;
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if (state == LOOK_FOR_UW) {
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/* put latest input bit into sliding buffer */
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for(i=0; i<UW_BITS-1; i++) {
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bit_buffer[i] = bit_buffer[i+1];
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}
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bit_buffer[i] = bit;
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/* lets see if it matches the UW */
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score = 0;
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for(i=0; i<UW_BITS; i++) {
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score += (bit_buffer[i] == uw[i]);
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/* if (i == BITS_PER_BYTE)
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printf(" ");
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printf("%1d", unpacked_packet[i]); */
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}
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//printf("\n");
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//fprintf(stderr,"UW score: %d\n", score);
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if (score >= (UW_BITS-UW_ALLOWED_ERRORS)) {
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//fprintf(stderr,"UW found! score: %d\n verbose: %d\n", score, verbose);
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ind = 0;
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next_state = COLLECT_PACKET;
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}
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}
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if (state == COLLECT_PACKET) {
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symbol_buf[ind++] = symbol;
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if (ind == SYMBOLS_PER_PACKET) {
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/* now LDPC decode */
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sd_to_llr(llr, symbol_buf, CodeLength);
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iter = run_ldpc_decoder(&ldpc, unpacked_packet, llr, &parityCheckCount);
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/* pack into bytes */
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for(i=0; i<BYTES_PER_PACKET+CRC_BYTES; i++) {
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abyte = 0;
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for(j=0; j<8; j++)
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abyte |= unpacked_packet[8*i+j] << (7-j);
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packet[i] = abyte;
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}
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/* then output if CRC check is OK */
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rx_checksum = gen_crc16(packet, BYTES_PER_PACKET);
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tx_checksum = packet[BYTES_PER_PACKET] + (packet[BYTES_PER_PACKET+1] << 8);
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if (verbose == 2) {
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if (rx_checksum != tx_checksum) {
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fprintf(stderr, "tx_checksum: 0x%02x rx_checksum: 0x%02x\n",
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tx_checksum, rx_checksum);
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}
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}
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packets++;
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if (rx_checksum == tx_checksum) {
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fwrite(packet, sizeof(char), BYTES_PER_PACKET, fout);
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fflush(fout);
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}
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else
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packet_errors++;
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if (verbose) {
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fprintf(stderr, "packets: %d packet_errors: %d PER: %4.3f iter: %d\n",
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packets, packet_errors,
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(float)packet_errors/packets, iter);
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}
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//exit(0);
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next_state = LOOK_FOR_UW;
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}
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}
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//if (bits_read == (16*10 + UNPACKED_PACKET_BYTES))
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// exit(0);
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state = next_state;
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}
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fclose(fin);
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fclose(fout);
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fprintf(stderr, "packets: %d packet_errors: %d PER: %4.3f\n", packets, packet_errors,
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(float)packet_errors/packets);
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return 0;
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}
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@ -40,6 +40,7 @@ UPLOAD_ENABLE=1
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# Baud Rate & FSK Demod Oversampling Settings
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#
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# Default: 115177 baud 8x oversampling (Default using a RPi Zero W's UART)
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# wenet v2: I2S 96000 baud, 10x oversampling
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# Other parameters which *may* work, but are un-tested:
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# 9600 baud, 100x oversampling
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# 4800 baud, 200x oversampling
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@ -64,6 +65,9 @@ IMAGE_PORT=7890
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# (e.g. multiple docker containers), use a different port for each instance.
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WEB_PORT=5003
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# drs232_ldpc (traditional) or wenet_ldpc (wenet v2)
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FRAMING_MODE=drs232_ldpc
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# Stop and remove any existing wenet instances
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echo "Stopping/Removing any existing Wenet instances..."
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docker stop wenet || true && docker rm wenet || true
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@ -84,6 +88,7 @@ if [ "$SDR_TYPE" = "RTLSDR" ] ; then
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-e IMAGE_PORT=$IMAGE_PORT \
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-e WEB_PORT=$WEB_PORT \
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-e SDR_TYPE=$SDR_TYPE \
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-e FRAMING_MODE=$FRAMING_MODE \
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-e UPLOAD_ENABLE=$UPLOAD_ENABLE \
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-v ~/wenet/rx_images/:/opt/wenet/rx_images/ \
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--device /dev/bus/usb \
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@ -104,6 +109,7 @@ elif [ "$SDR_TYPE" = "KA9Q" ] ; then
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-e IMAGE_PORT=$IMAGE_PORT \
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-e WEB_PORT=$WEB_PORT \
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-e SDR_TYPE=$SDR_TYPE \
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-e FRAMING_MODE=$FRAMING_MODE \
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-e UPLOAD_ENABLE=$UPLOAD_ENABLE \
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-v ~/wenet/rx_images/:/opt/wenet/rx_images/ \
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-v /var/run/dbus:/var/run/dbus \
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|
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@ -28,6 +28,8 @@ BIAS=0
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# Note that this will need the rtl_biast utility available, which means
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# building the rtl-sdr utils from this repo: https://github.com/rtlsdrblog/rtl-sdr
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# drs232_ldpc (traditional) or wenet_ldpc (wenet v2)
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FRAMING_MODE=drs232_ldpc
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# Change the following path as appropriate.
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# If running this from a .desktop file, you may need to set an absolute path here
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@ -124,7 +126,7 @@ if [ "$RX_FLOW" = "IQ" ]; then
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rtl_sdr -s $SDR_RATE -f $RX_SSB_FREQ -g $GAIN - | \
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./fsk_demod --cu8 -s --stats=100 2 $SDR_RATE $BAUD_RATE - - 2> >(python fskdemodgui.py --wide) | \
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./drs232_ldpc - - -vv 2> /dev/null | \
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./$FRAMING_MODE - - -vv 2> /dev/null | \
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python rx_ssdv.py --partialupdate 16
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elif [ "$RX_FLOW" = "GQRX" ]; then
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# GQRX Mode - take 48kHz real samples from GQRX via UDP.
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@ -134,7 +136,7 @@ elif [ "$RX_FLOW" = "GQRX" ]; then
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echo "Receiving samples from GQRX on UDP:localhost:7355"
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nc -l -u localhost 7355 | \
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./fsk_demod -s --stats=100 -b 1 -u 23500 2 48000 $BAUD_RATE - - 2> >(python fskdemodgui.py --wide) | \
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./drs232_ldpc - - -vv 2> /dev/null | \
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./$FRAMING_MODE - - -vv 2> /dev/null | \
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python rx_ssdv.py --partialupdate 4
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else
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# If using a RTLSDR that has a DC spike (i.e. either has a FitiPower FC0012 or Elonics E4000 Tuner),
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@ -145,7 +147,7 @@ else
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csdr bandpass_fir_fft_cc 0.05 0.45 0.05 | csdr realpart_cf | \
|
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csdr gain_ff 0.5 | csdr convert_f_s16 | \
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./fsk_demod -s --stats=100 2 $SDR_RATE $BAUD_RATE - - 2> >(python fskdemodgui.py --wide) | \
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||||
./drs232_ldpc - - -vv 2> /dev/null | \
|
||||
./$FRAMING_MODE - - -vv 2> /dev/null | \
|
||||
python rx_ssdv.py --partialupdate 16
|
||||
|
||||
fi
|
||||
|
|
|
|||
|
|
@ -33,6 +33,8 @@ BIAS=0
|
|||
# Note that this will need the rtl_biast utility available, which means
|
||||
# building the rtl-sdr utils from this repo: https://github.com/rtlsdrblog/rtl-sdr
|
||||
|
||||
# drs232_ldpc (traditional) or wenet_ldpc (wenet v2)
|
||||
FRAMING_MODE=drs232_ldpc
|
||||
|
||||
# Change the following path as appropriate.
|
||||
# If running this from a .desktop file, you may need to set an absolute path here
|
||||
|
|
@ -67,8 +69,9 @@ RX_FLOW=IQ
|
|||
#
|
||||
# Modem Settings - Don't adjust these unless you really need to!
|
||||
#
|
||||
BAUD_RATE=115177 # Baud rate, in symbols/second.
|
||||
OVERSAMPLING=8 # FSK Demod Oversampling rate. Not used in GQRX mode.
|
||||
# TODO change back to traditional settings
|
||||
BAUD_RATE=96000 # Baud rate, in symbols/second.
|
||||
OVERSAMPLING=10 # FSK Demod Oversampling rate. Not used in GQRX mode.
|
||||
# Known-Working Modem Settings:
|
||||
# 115177 baud (Pi Zero W @ '115200' baud), 8x oversampling.
|
||||
# 9600 baud, 100x oversampling.
|
||||
|
|
@ -131,7 +134,7 @@ if [ "$RX_FLOW" = "IQ" ]; then
|
|||
|
||||
rtl_sdr -s $SDR_RATE -f $RX_SSB_FREQ -g $GAIN - | \
|
||||
./fsk_demod --cu8 -s --stats=100 2 $SDR_RATE $BAUD_RATE - - 2> >(python fskstatsudp.py --rate 1 --freq $RX_SSB_FREQ --samplerate $SDR_RATE --image_port $IMAGE_PORT ) | \
|
||||
./drs232_ldpc - - -vv 2> /dev/null | \
|
||||
./$FRAMING_MODE - - -vv 2> /dev/null | \
|
||||
python rx_ssdv.py --partialupdate 16 --headless --image_port $IMAGE_PORT
|
||||
elif [ "$RX_FLOW" = "GQRX" ]; then
|
||||
# GQRX Mode - take 48kHz real samples from GQRX via UDP.
|
||||
|
|
@ -141,7 +144,7 @@ elif [ "$RX_FLOW" = "GQRX" ]; then
|
|||
echo "Receiving samples from GQRX on UDP:localhost:7355"
|
||||
nc -l -u localhost 7355 | \
|
||||
./fsk_demod -s --stats=100 -b 1 -u 23500 2 48000 $BAUD_RATE - - 2> >(python fskstatsudp.py --rate 1 --freq $RX_SSB_FREQ --samplerate $SDR_RATE --real --image_port $IMAGE_PORT ) | \
|
||||
./drs232_ldpc - - -vv 2> /dev/null | \
|
||||
./$FRAMING_MODE - - -vv 2> /dev/null | \
|
||||
python rx_ssdv.py --partialupdate 4 --headless --image_port $IMAGE_PORT
|
||||
else
|
||||
# If using a RTLSDR that has a DC spike (i.e. either has a FitiPower FC0012 or Elonics E4000 Tuner),
|
||||
|
|
@ -152,7 +155,7 @@ else
|
|||
csdr bandpass_fir_fft_cc 0.05 0.45 0.05 | csdr realpart_cf | \
|
||||
csdr gain_ff 0.5 | csdr convert_f_s16 | \
|
||||
./fsk_demod -s --stats=100 2 $SDR_RATE $BAUD_RATE - - 2> >(python fskstatsudp.py --rate 1 --freq $RX_SSB_FREQ --samplerate $SDR_RATE --real --image_port $IMAGE_PORT ) | \
|
||||
./drs232_ldpc - - -vv 2> /dev/null | \
|
||||
./$FRAMING_MODE - - -vv 2> /dev/null | \
|
||||
python rx_ssdv.py --partialupdate 16 --headless --image_port $IMAGE_PORT
|
||||
|
||||
fi
|
||||
|
|
|
|||
Ładowanie…
Reference in New Issue