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-rw-r--r--test/lock_s.c531
1 files changed, 531 insertions, 0 deletions
diff --git a/test/lock_s.c b/test/lock_s.c
new file mode 100644
index 0000000..7bbab59
--- /dev/null
+++ b/test/lock_s.c
@@ -0,0 +1,531 @@
+/*
+ * lock_s - Ultra simple DVB-S lock test application
+ * A minimal lock test application derived from szap.c
+ * for testing purposes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/poll.h>
+#include <sys/param.h>
+#include <fcntl.h>
+#include <time.h>
+#include <unistd.h>
+#include <ctype.h>
+
+#include <stdint.h>
+#include <sys/time.h>
+
+#include <linux/dvb/frontend.h>
+
+#define FEDEVICE "/dev/dvb/adapter%d/frontend%d"
+
+static char *usage_str = "\n lock_s ver:0.0.1: Simple utility to test DVB-S signal lock.\n"
+ " \n"
+ " usage: lock_s [[PARAMS] [OPTIONS]]\n"
+ " dvbstune [params] tune to user provided DVB-S parameters\n"
+ " -a number : use given adapter (default 0)\n"
+ " -f number : use given frontend (default 0)\n"
+ " -p params : parameters to be used for tuning\n"
+ " frequency (Mhz) Polarization (v/h) Symbol rate (MSPS)\n"
+ " \n"
+ " -s pos : DiSEqC switch position\n"
+ " -H : human readable output\n"
+ " -l lnb-type (DVB-S Only) (use -l help to print types) or \n"
+ " -l low[,high[,switch]] in Mhz\n";
+
+static char *univ_desc[] = {
+ "Europe",
+ "10800 to 11800 MHz and 11600 to 12700 Mhz",
+ "Dual LO, loband 9750, hiband 10600 MHz",
+ (char *)NULL
+};
+
+static char *dbs_desc[] = {
+ "Expressvu, North America",
+ "12200 to 12700 MHz",
+ "Single LO, 11250 MHz",
+ (char *)NULL
+};
+
+static char *standard_desc[] = {
+ "10945 to 11450 Mhz",
+ "Single LO, 10000 Mhz",
+ (char *)NULL
+};
+
+static char *enhan_desc[] = {
+ "Astra",
+ "10700 to 11700 MHz",
+ "Single LO, 9750 MHz",
+ (char *)NULL
+};
+
+static char *cband_desc[] = {
+ "Big Dish",
+ "3700 to 4200 MHz",
+ "Single LO, 5150 Mhz",
+ (char *)NULL
+};
+
+enum sec_bands {
+ SEC_LO_BAND = 0,
+ SEC_HI_BAND = 1,
+};
+
+struct sec_params {
+ unsigned int freq;
+ enum fe_sec_voltage voltage;
+ unsigned int srate;
+
+ unsigned int freq_if;
+ int pos; /* DiSEqC sw. pos */
+
+ fe_sec_tone_mode_t tone;
+ fe_sec_mini_cmd_t burst;
+};
+
+struct lnb_types_st {
+ char *name;
+ char **desc;
+ unsigned long low_val;
+ unsigned long high_val; /* zero indicates no hiband */
+ unsigned long switch_val; /* zero indicates no hiband */
+} lnbs[] = {
+ {"UNIVERSAL", univ_desc, 9750, 10600, 11700 },
+ {"DBS", dbs_desc, 11250, 0, 0 },
+ {"STANDARD", standard_desc, 10000, 0, 0 },
+ {"ENHANCED", enhan_desc, 9750, 0, 0 },
+ {"C-BAND", cband_desc, 5150, 0, 0 },
+};
+
+struct diseqc_cmd {
+ struct dvb_diseqc_master_cmd cmd;
+ uint32_t wait;
+};
+
+int lnb_parse(char *str, struct lnb_types_st *lnbp)
+{
+ int i;
+ char *cp, *np;
+
+ memset(lnbp, 0, sizeof (*lnbp));
+ cp = str;
+ while (*cp && isspace(*cp))
+ cp++;
+
+ if (isalpha(*cp)) {
+ for (i = 0; i < (int)(sizeof(lnbs) / sizeof(lnbs[0])); i++) {
+ if (!strcasecmp(lnbs[i].name, cp)) {
+ *lnbp = lnbs[i];
+ return 1;
+ }
+ }
+ return -1;
+ }
+
+ if (*cp == '\0' || !isdigit(*cp))
+ return -1;
+ lnbp->low_val = strtoul(cp, &np, 0);
+ if (lnbp->low_val == 0)
+ return -1;
+
+ cp = np;
+ while(*cp && (isspace(*cp) || *cp == ','))
+ cp++;
+ if (*cp == '\0')
+ return 1;
+ if (!isdigit(*cp))
+ return -1;
+ lnbp->high_val = strtoul(cp, &np, 0);
+
+ cp = np;
+ while(*cp && (isspace(*cp) || *cp == ','))
+ cp++;
+ if (*cp == '\0')
+ return 1;
+ if (!isdigit(*cp))
+ return -1;
+ lnbp->switch_val = strtoul(cp, NULL, 0);
+ return 1;
+}
+
+int params_decode(char *str, char **argv, struct sec_params *params)
+{
+ unsigned int freq;
+ char *pol;
+ char *cp, *np;
+
+ cp = str;
+
+ while (*cp && isspace(*cp))
+ cp++;
+
+ /* get frequency */
+ if (*cp == '\0' || !isdigit(*cp))
+ return -1;
+ freq = strtoul(cp, &np, 0);
+ params->freq = freq;
+ if (freq == 0)
+ return -1;
+
+ /* polarization v=13v:0, h=18v:0 */
+ pol = argv[optind]; /* v/h */
+ (!strncmp(pol, "v", 1)) ? (params->voltage = 0) : (params->voltage = 1);
+ params->srate = strtoul(argv[optind + 1], NULL, 0);
+
+ return 1;
+}
+
+/**
+ * lnb_setup(struct lnb_types_st *lnb, unsigned int freq, unsigned int *freq_if)
+ * @lnb : lnb type as described int lnb_types_st
+ * @freq : transponder frequency which user requests
+ * @freq_if : resultant Intermediate Frequency after down conversion
+ */
+static int lnb_setup(struct lnb_types_st *lnb, struct sec_params *params)
+{
+ int ret = 0;
+
+ if (!lnb) {
+ fprintf(stderr, "Error: lnb_types=NULL\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* TODO! check upper and lower limits from LNB types */
+ if (!params->freq) {
+ fprintf(stderr, "Error: invalid frequency, f:%d", params->freq);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (lnb->switch_val && lnb->high_val && params->freq >= lnb->switch_val) {
+ /* HI Band */
+ params->freq_if = params->freq - lnb->high_val;
+ params->tone = SEC_TONE_ON;
+ } else {
+ /* LO Band */
+ params->tone = SEC_TONE_OFF;
+ if (params->freq < lnb->low_val)
+ params->freq_if = lnb->low_val - params->freq;
+ else
+ params->freq_if = params->freq - lnb->low_val;
+
+ }
+err:
+ return ret;
+}
+
+static int diseqc_send_msg(int fd, struct sec_params *params, struct diseqc_cmd *cmd)
+{
+ int ret = 0;
+
+ ret = ioctl(fd, FE_SET_TONE, SEC_TONE_OFF);
+ if (ret < 0) {
+ fprintf(stderr, "FE_SET_TONE failed\n");
+ goto err;
+ }
+
+ ret = ioctl(fd, FE_SET_VOLTAGE, params->voltage);
+ if (ret < 0) {
+ fprintf(stderr, "FE_SET_VOLTAGE failed, voltage=%d\n", params->voltage);
+ usleep(15 * 1000);
+ goto err;
+ }
+
+ ret = ioctl(fd, FE_DISEQC_SEND_MASTER_CMD, &cmd->cmd);
+ if (ret < 0) {
+ perror("FE_DISEQC_SEND_MASTER_CMD failed");
+ usleep(cmd->wait * 1000);
+ usleep(15 * 1000);
+ goto err;
+ }
+
+ ret = ioctl(fd, FE_DISEQC_SEND_BURST, params->burst);
+ if (ret < 0) {
+ fprintf(stderr, "FE_DISEQC_SEND_BURST failed, burst=%d\n", params->burst);
+ usleep(15 * 1000);
+ goto err;
+ }
+
+ ret = ioctl(fd, FE_SET_TONE, params->tone);
+ if (ret < 0) {
+ fprintf(stderr, "FE_SET_TONE failed, tone=%d\n", params->tone);
+ goto err;
+ }
+err:
+ return ret;
+}
+
+static int diseqc_setup(int fd, struct sec_params *params)
+{
+ int pos = params->pos;
+ int band = params->tone;
+ fe_sec_voltage_t voltage = params->voltage;
+ int ret;
+
+ struct diseqc_cmd cmd = {{{0xe0, 0x10, 0x38, 0xf0, 0x00, 0x00}, 4}, 0 };
+
+ /*
+ * param: high nibble: reset bits, low nibble set bits,
+ * bits are: option, position, polarization, band
+ */
+ cmd.cmd.msg[3] = 0xf0 |
+ (((pos * 4) & 0x0f) |
+ (band ? 1 : 0) |
+ (voltage ? 0 : 2));
+
+ ret = diseqc_send_msg(fd, params, &cmd);
+ if (ret < 0) {
+ fprintf(stderr, "SEC message send failed, err=%d", ret);
+ return -EIO;
+ }
+ return 0;
+}
+
+static int tune_to(int fd, struct sec_params *sec)
+{
+ struct dvb_frontend_parameters params;
+ struct dvb_frontend_event ev;
+ int ret;
+
+ /* discard stale QPSK events */
+ while (1) {
+ ret = ioctl(fd, FE_GET_EVENT, &ev);
+ if (ret == -1)
+ break;
+ }
+
+ params.frequency = sec->freq_if;
+ params.inversion = INVERSION_AUTO;
+ params.u.qpsk.symbol_rate = sec->srate;
+ params.u.qpsk.fec_inner = FEC_AUTO;
+
+ ret = ioctl(fd, FE_SET_FRONTEND, &params);
+ if (ret == -1) {
+ fprintf(stderr, "FE_SET_FRONTEND error=%d\n", ret);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int frontend_open(int *fd, int adapter, int frontend)
+{
+ static struct dvb_frontend_info info;
+ char fedev[128];
+ int ret = 0;
+
+ snprintf(fedev, sizeof(fedev), FEDEVICE, adapter, frontend);
+ *fd = open(fedev, O_RDWR | O_NONBLOCK);
+ if (*fd < 0) {
+ fprintf(stderr, "Frontend %d open failed\n", frontend);
+ ret = -1;
+ goto err;
+ }
+
+ ret = ioctl(*fd, FE_GET_INFO, &info);
+ if (ret < 0) {
+ fprintf(stderr, "ioctl FE_GET_INFO failed\n");
+ goto err;
+ }
+
+ if (info.type != FE_QPSK) {
+ fprintf(stderr, "frontend device is not a QPSK (DVB-S) device!\n");
+ ret = -ENODEV;
+ goto err;
+ }
+ return 0;
+err:
+ fprintf(stderr, "Closing Adapter:%d Frontend:%d\n", adapter, frontend);
+ close(*fd);
+ return ret;
+}
+
+void bad_usage(char *pname, int prlnb)
+{
+ int i;
+ struct lnb_types_st *lnb;
+ char **cp;
+
+ if (!prlnb) {
+ fprintf (stderr, usage_str, pname);
+ } else {
+ i = 0;
+ fprintf(stderr, "-l <lnb-type> or -l low[,high[,switch]] in Mhz\nwhere <lnb-type> is:\n");
+ while ((lnb = &lnbs[i]) != NULL) {
+ fprintf (stderr, "%s\n", lnb->name);
+ for (cp = lnb->desc; *cp; cp++)
+ fprintf (stderr, " %s\n", *cp);
+ i++;
+ }
+ }
+}
+
+static int check_frontend (int fd, int human_readable)
+{
+ fe_status_t status;
+ uint16_t snr, signal;
+ uint32_t ber, uncorrected_blocks;
+ int ret;
+
+ do {
+ ret = ioctl(fd, FE_READ_STATUS, &status);
+ if (ret == -1) {
+ fprintf(stderr, "FE_READ_STATUS failed, err=%d", ret);
+ return -EIO;
+ }
+
+ /*
+ * some frontends might not support all these ioctls, thus we
+ * avoid printing errors
+ */
+ ret = ioctl(fd, FE_READ_SIGNAL_STRENGTH, &signal);
+ if (ret == -1)
+ signal = -2;
+
+ ret = ioctl(fd, FE_READ_SNR, &snr);
+ if (ret == -1)
+ snr = -2;
+
+ ret = ioctl(fd, FE_READ_BER, &ber);
+ if (ret == -1)
+ ber = -2;
+
+ ret = ioctl(fd, FE_READ_UNCORRECTED_BLOCKS, &uncorrected_blocks);
+ if (ret == -1)
+ uncorrected_blocks = -2;
+
+ if (human_readable) {
+ printf ("status %02x | signal %3u%% | snr %3u%% | ber %d | unc %d | ",
+ status, (signal * 100) / 0xffff, (snr * 100) / 0xffff, ber, uncorrected_blocks);
+ } else {
+ printf ("status %02x | signal %04x | snr %04x | ber %08x | unc %08x | ",
+ status, signal, snr, ber, uncorrected_blocks);
+ }
+
+ if (status & FE_HAS_LOCK)
+ printf("FE_HAS_LOCK");
+
+ printf("\n");
+ usleep(1000000);
+ } while (1);
+
+ return 0;
+}
+
+
+/**
+ * basic options needed
+ * @adapter
+ * @frontend
+ * @freq (Mhz)
+ * @pol (13/18)
+ * @srate (kSps)
+ * @pos (0 - 3)
+ * @LNB (low, high, switch) Mhz
+ *
+ */
+int main(int argc, char *argv[])
+{
+ int opt;
+ int ret, fd, adapter=0, frontend=0, pos;
+ int simple;
+ struct lnb_types_st lnb;
+ struct sec_params sec;
+
+ lnb = lnbs[0]; /* default is Universal LNB */
+ while ((opt = getopt(argc, argv, "Hh:a:f:p:s:l:")) != -1) {
+ switch (opt) {
+ case '?':
+ case 'h':
+ default: /* help */
+ bad_usage(argv[0], 0);
+ break;
+ case 'a': /* adapter */
+ adapter = strtoul(optarg, NULL, 0);
+ break;
+ case 'f': /* demodulator (device) */
+ frontend = strtoul(optarg, NULL, 0);
+ break;
+ case 'p': /* parameters */
+ if (params_decode(optarg, argv, &sec) < 0) {
+ bad_usage(argv[0], 1);
+ return -1;
+ }
+ break;
+ case 's': /* diseqc position */
+ pos = strtoul(optarg, NULL, 0);
+ pos % 2 ? (sec.burst = SEC_MINI_B) : (sec.burst = SEC_MINI_A);
+ break;
+ case 'l':
+ if (lnb_parse(optarg, &lnb) < 0) {
+ bad_usage(argv[0], 1);
+ return -1;
+ }
+ break;
+ case 'H':
+ simple = 1; /* human readable */
+ break;
+ }
+ }
+ lnb.low_val *= 1000; /* kHz */
+ lnb.high_val *= 1000; /* kHz */
+ lnb.switch_val *= 1000; /* kHz */
+
+ sec.freq *= 1000; /* kHz */
+ sec.srate *= 1000;
+
+ ret = frontend_open(&fd, adapter, frontend);
+ if (ret < 0) {
+ fprintf(stderr, "Adapter:%d Frontend:%d open failed, err=%d\n", adapter, frontend, ret);
+ return -1;
+ }
+ ret = lnb_setup(&lnb, &sec);
+ if (ret < 0) {
+ fprintf(stderr, "LNB setup failed, err=%d\n", ret);
+ fprintf(stderr, "%s", usage_str);
+ goto err;
+ }
+
+ ret = diseqc_setup(fd, &sec);
+ if (ret < 0) {
+ fprintf(stderr, "SEC setup failed, err=%d\n", ret);
+ goto err;;
+ }
+
+ ret = tune_to(fd, &sec);
+ if (ret < 0) {
+ fprintf(stderr, "Adapter:%d Frontend:%d tune_to %d %d failed, err=%d\n", adapter, frontend, sec.freq, sec.srate, ret);
+ goto err;;
+ }
+
+ ret = check_frontend(fd, 1);
+ if (ret < 0) {
+ fprintf(stderr, "check frontend failed\n");
+ goto err;;
+ }
+err:
+ return ret;
+}
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