diff options
Diffstat (limited to 'src/fsk_put_test_bits.c')
| -rw-r--r-- | src/fsk_put_test_bits.c | 261 |
1 files changed, 134 insertions, 127 deletions
diff --git a/src/fsk_put_test_bits.c b/src/fsk_put_test_bits.c index 7b2da34..584d14f 100644 --- a/src/fsk_put_test_bits.c +++ b/src/fsk_put_test_bits.c @@ -9,7 +9,6 @@ \*---------------------------------------------------------------------------*/ - /* Copyright (C) 2016 David Rowe @@ -27,144 +26,152 @@ along with this program; if not, see <http://www.gnu.org/licenses/>. */ +#include <getopt.h> #include <stdio.h> #include <stdlib.h> #include <string.h> -#include <getopt.h> + #include "fsk.h" -#define TEST_FRAME_SIZE 100 /* must match fsk_get_test_bits.c */ +#define TEST_FRAME_SIZE 100 /* must match fsk_get_test_bits.c */ #define VALID_PACKET_BER_THRESH 0.1 -int main(int argc,char *argv[]){ - int bitcnt,biterr,i,errs,packetcnt; - int framesize = TEST_FRAME_SIZE; - float valid_packet_ber_thresh = VALID_PACKET_BER_THRESH; - int packet_pass_thresh = 0; - float ber_pass_thresh = 0; - FILE *fin; - uint8_t *bitbuf_tx, *bitbuf_rx, abyte, abit; - int verbose = 1; - int packed_in = 0; - - char usage[] = "usage: %s [-f frameSizeBits] [-t VaildFrameBERThreshold] [-b BERPass] [-p numPacketsPass] [-k] InputOneBitPerByte\n" - " [-k] packet byte input\n"; - - int opt; - while ((opt = getopt(argc, argv, "f:b:p:hqt:k")) != -1) { - switch (opt) { - case 't': - valid_packet_ber_thresh = atof(optarg); - break; - case 'b': - ber_pass_thresh = atof(optarg); - break; - case 'p': - packet_pass_thresh = atoi(optarg); - break; - case 'f': - framesize = atoi(optarg); - break; - case 'q': - verbose = 0; - break; - case 'k': - packed_in = 1; - break; - case 'h': - default: - fprintf(stderr, usage, argv[0]); - exit(1); - } - } - if (argc == 1) { +int main(int argc, char *argv[]) { + int bitcnt, biterr, i, errs, packetcnt; + int framesize = TEST_FRAME_SIZE; + float valid_packet_ber_thresh = VALID_PACKET_BER_THRESH; + int packet_pass_thresh = 0; + float ber_pass_thresh = 0; + FILE *fin; + uint8_t *bitbuf_tx, *bitbuf_rx, abyte, abit; + int verbose = 1; + int packed_in = 0; + + char usage[] = + "usage: %s [-f frameSizeBits] [-t VaildFrameBERThreshold] [-b BERPass] " + "[-p numPacketsPass] [-k] InputOneBitPerByte\n" + " [-k] packet byte input\n"; + + int opt; + while ((opt = getopt(argc, argv, "f:b:p:hqt:k")) != -1) { + switch (opt) { + case 't': + valid_packet_ber_thresh = atof(optarg); + break; + case 'b': + ber_pass_thresh = atof(optarg); + break; + case 'p': + packet_pass_thresh = atoi(optarg); + break; + case 'f': + framesize = atoi(optarg); + break; + case 'q': + verbose = 0; + break; + case 'k': + packed_in = 1; + break; + case 'h': + default: fprintf(stderr, usage, argv[0]); exit(1); } - - int bits_per_byte = 1; - if (packed_in) { - if (framesize % 8) { - fprintf(stderr, "framesize (-f) must be a multiple of 8 for packed byte input (-k)\n"); - exit(1); - } - bits_per_byte = 8; - } - - char *fname = argv[optind++]; - if ((strcmp(fname,"-")==0) || (argc<2)){ - fin = stdin; - } else { - fin = fopen(fname,"r"); + } + if (argc == 1) { + fprintf(stderr, usage, argv[0]); + exit(1); + } + + int bits_per_byte = 1; + if (packed_in) { + if (framesize % 8) { + fprintf(stderr, + "framesize (-f) must be a multiple of 8 for packed byte input " + "(-k)\n"); + exit(1); } - - if(fin==NULL){ - fprintf(stderr,"Couldn't open input file: %s\n", argv[1]); - exit(1); - } - - /* allocate buffers for processing */ - bitbuf_tx = (uint8_t*)malloc(sizeof(uint8_t)*framesize); - bitbuf_rx = (uint8_t*)malloc(sizeof(uint8_t)*framesize); - - /* Generate known tx frame from known seed */ - srand(158324); - for(i=0; i<framesize; i++){ - bitbuf_tx[i] = rand()&0x1; - bitbuf_rx[i] = 0; - } - - bitcnt = 0; biterr = 0; packetcnt = 0; - float ber = 0.5; - - while(fread(&abyte,sizeof(uint8_t),1,fin)>0){ - - for (int b=0; b<bits_per_byte; b++) { - abit = (abyte >> ((bits_per_byte-1)-b)) & 0x1; - - /* update sliding window of input bits */ - - for(i=0; i<framesize-1; i++) { - bitbuf_rx[i] = bitbuf_rx[i+1]; - } - bitbuf_rx[framesize-1] = abit; - - /* compare to know tx frame. If they are time aligned, there - will be a fairly low bit error rate */ - - errs = 0; - for(i=0; i<framesize; i++) { - if (bitbuf_rx[i] != bitbuf_tx[i]) { - errs++; - } - } - if (errs < valid_packet_ber_thresh * framesize) { - /* OK, we have a valid packet, so lets count errors */ - packetcnt++; - bitcnt += framesize; - biterr += errs; - ber = (float)biterr/(float)bitcnt; - if (verbose) { - fprintf(stderr,"[%04d] BER %5.3f, bits tested %6d, bit errors %6d errs: %4d \n", - packetcnt, ber, bitcnt, biterr, errs); - } - } + bits_per_byte = 8; + } + + char *fname = argv[optind++]; + if ((strcmp(fname, "-") == 0) || (argc < 2)) { + fin = stdin; + } else { + fin = fopen(fname, "r"); + } + + if (fin == NULL) { + fprintf(stderr, "Couldn't open input file: %s\n", argv[1]); + exit(1); + } + + /* allocate buffers for processing */ + bitbuf_tx = (uint8_t *)malloc(sizeof(uint8_t) * framesize); + bitbuf_rx = (uint8_t *)malloc(sizeof(uint8_t) * framesize); + + /* Generate known tx frame from known seed */ + srand(158324); + for (i = 0; i < framesize; i++) { + bitbuf_tx[i] = rand() & 0x1; + bitbuf_rx[i] = 0; + } + + bitcnt = 0; + biterr = 0; + packetcnt = 0; + float ber = 0.5; + + while (fread(&abyte, sizeof(uint8_t), 1, fin) > 0) { + for (int b = 0; b < bits_per_byte; b++) { + abit = (abyte >> ((bits_per_byte - 1) - b)) & 0x1; + + /* update sliding window of input bits */ + + for (i = 0; i < framesize - 1; i++) { + bitbuf_rx[i] = bitbuf_rx[i + 1]; + } + bitbuf_rx[framesize - 1] = abit; + + /* compare to know tx frame. If they are time aligned, there + will be a fairly low bit error rate */ + + errs = 0; + for (i = 0; i < framesize; i++) { + if (bitbuf_rx[i] != bitbuf_tx[i]) { + errs++; } + } + if (errs < valid_packet_ber_thresh * framesize) { + /* OK, we have a valid packet, so lets count errors */ + packetcnt++; + bitcnt += framesize; + biterr += errs; + ber = (float)biterr / (float)bitcnt; + if (verbose) { + fprintf( + stderr, + "[%04d] BER %5.3f, bits tested %6d, bit errors %6d errs: %4d \n", + packetcnt, ber, bitcnt, biterr, errs); + } + } } - - free(bitbuf_rx); - free(bitbuf_tx); - - fclose(fin); - - fprintf(stderr,"[%04d] BER %5.3f, bits tested %6d, bit errors %6d\n", packetcnt, ber, bitcnt, biterr); - if ((packetcnt >= packet_pass_thresh) && (ber <= ber_pass_thresh)) { - fprintf(stderr,"PASS\n"); - return 0; - } - else { - fprintf(stderr,"FAIL\n"); - return 1; - } + } + + free(bitbuf_rx); + free(bitbuf_tx); + + fclose(fin); + + fprintf(stderr, "[%04d] BER %5.3f, bits tested %6d, bit errors %6d\n", + packetcnt, ber, bitcnt, biterr); + if ((packetcnt >= packet_pass_thresh) && (ber <= ber_pass_thresh)) { + fprintf(stderr, "PASS\n"); + return 0; + } else { + fprintf(stderr, "FAIL\n"); + return 1; + } } |