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Code Issues Releases Wiki Activity

first pass sending Sf info over UDP

master
David 2020-07-28 05:29:07 +09:30
parent f1250de7be
commit 09cc2dc8ab
1 changed files with 27 additions and 11 deletions
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38
src/rtl_fsk.c
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@ -46,6 +46,7 @@
#define DEFAULT_BUF_LENGTH (16 * 16384)
#define MINIMAL_BUF_LENGTH 512
#define MAXIMAL_BUF_LENGTH (256 * 16384)
#define BUF_SZ 256
static int do_exit = 0;
static uint32_t bytes_to_read = 0;
@ -74,6 +75,7 @@ void usage(void)
"\t[-b output_block_size (default: 16 * 16384)]\n"
"\t[-n number of samples to read (default: 0, infinite)]\n"
"\t[-S force sync output (default: async)]\n"
"\t[-u hostname (optional host to send debug information to on port 8001)\n"
"\tfilename (a '-' dumps bits to stdout)\n\n", DEFAULT_SAMPLE_RATE);
exit(1);
}
@ -99,6 +101,17 @@ static void sighandler(int signum)
}
#endif
static void udp_sendbuf(char buf[]) {
int n;
/* send the message to the server */
n = sendto(sockfd, buf, strlen(buf), 0, (const struct sockaddr *)&serveraddr, sizeof(serveraddr));
if (n < 0) {
fprintf(stderr, "ERROR in sendto\n");
exit(1);
}
}
static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx)
{
unsigned char *pout;
@ -146,20 +159,23 @@ static void rtlsdr_callback(unsigned char *buf, uint32_t len, void *ctx)
if (udp_debug) {
sample_counter += fsk_nin(fsk);
if (sample_counter > samp_rate) {
char buf[BUF_SZ];
size_t Ndft;
/* one second has passed, lets send some debug information */
int serverlen;
char buf[256];
int n;
sample_counter -= samp_rate;
/* send the message to the server */
sprintf(buf, "hello\n");
serverlen = sizeof(serveraddr);
n = sendto(sockfd, buf, strlen(buf), 0, (const struct sockaddr *)&serveraddr, serverlen);
if (n < 0) {
fprintf(stderr, "ERROR in sendto\n");
exit(1);
/* Print a sample of the FFT from the freq estimator */
snprintf(buf, BUF_SZ, "{"); udp_sendbuf(buf);
snprintf(buf, BUF_SZ, "\"Sf\":["); udp_sendbuf(buf);
Ndft = fsk->Ndft;
for(i=0; i<Ndft; i++) {
snprintf(buf, BUF_SZ, "%f ",(fsk->Sf)[i]); udp_sendbuf(buf);
if(i<Ndft-1) { snprintf(buf, BUF_SZ, ","); udp_sendbuf(buf); }
}
fprintf(stderr,"UDP message sent to %s:%d\n", hostname, portno);
snprintf(buf, BUF_SZ, "]"); udp_sendbuf(buf);
/* TODO: tone freq ests, SNRest, maybe buffer sample clock offsets and send as an array */
snprintf(buf, BUF_SZ, "}\n"); udp_sendbuf(buf);
fprintf(stderr, "Tick\n");
}
}
}