/*
 * Copyright © 2008-2010 Stéphane Raimbault <stephane.raimbault@gmail.com>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <sys/time.h>
#include <errno.h>

#include <modbus.h>

#define G_MSEC_PER_SEC 1000

uint32_t gettime_ms(void)
{
    struct timeval tv;
    gettimeofday (&tv, NULL);

    return (uint32_t) tv.tv_sec * 1000 + tv.tv_usec / 1000;
}

enum {
    TCP,
    RTU
};

/* Tests based on PI-MBUS-300 documentation */
int main(int argc, char *argv[])
{
    uint8_t *tab_bit;
    uint16_t *tab_reg;
    modbus_t *ctx;
    int i;
    int nb_points;
    double elapsed;
    uint32_t start;
    uint32_t end;
    uint32_t bytes;
    uint32_t rate;
    int rc;
    int n_loop;
    int use_backend;

    if (argc > 1) {
        if (strcmp(argv[1], "tcp") == 0) {
            use_backend = TCP;
            n_loop = 100000;
        } else if (strcmp(argv[1], "rtu") == 0) {
            use_backend = RTU;
            n_loop = 100;
        } else {
            printf("Usage:\n  %s [tcp|rtu] - Modbus client to measure data bandwith\n\n", argv[0]);
            exit(1);
        }
    } else {
        /* By default */
        use_backend = TCP;
        n_loop = 100000;
    }

    if (use_backend == TCP) {
        ctx = modbus_new_tcp("127.0.0.1", 1502);
    } else {
        ctx = modbus_new_rtu("/dev/ttyUSB1", 115200, 'N', 8, 1);
        modbus_set_slave(ctx, 1);
    }
    if (modbus_connect(ctx) == -1) {
        fprintf(stderr, "Connexion failed: %s\n",
                modbus_strerror(errno));
        modbus_free(ctx);
        return -1;
    }

    /* Allocate and initialize the memory to store the status */
    tab_bit = (uint8_t *) malloc(MODBUS_MAX_READ_BITS * sizeof(uint8_t));
    memset(tab_bit, 0, MODBUS_MAX_READ_BITS * sizeof(uint8_t));

    /* Allocate and initialize the memory to store the registers */
    tab_reg = (uint16_t *) malloc(MODBUS_MAX_READ_REGISTERS * sizeof(uint16_t));
    memset(tab_reg, 0, MODBUS_MAX_READ_REGISTERS * sizeof(uint16_t));

    printf("READ BITS\n\n");

    nb_points = MODBUS_MAX_READ_BITS;
    start = gettime_ms();
    for (i=0; i<n_loop; i++) {
        rc = modbus_read_bits(ctx, 0, nb_points, tab_bit);
        if (rc == -1) {
            fprintf(stderr, "%s\n", modbus_strerror(errno));
            return -1;
        }
    }
    end = gettime_ms();
    elapsed = end - start;

    rate = (n_loop * nb_points) * G_MSEC_PER_SEC / (end - start);
    printf("Transfert rate in points/seconds:\n");
    printf("* %d points/s\n", rate);
    printf("\n");

    bytes = n_loop * (nb_points / 8) + ((nb_points % 8) ? 1 : 0);
    rate = bytes / 1024 * G_MSEC_PER_SEC / (end - start);
    printf("Values:\n");
    printf("* %d x %d values\n", n_loop, nb_points);
    printf("* %.3f ms for %d bytes\n", elapsed, bytes);
    printf("* %d KiB/s\n", rate);
    printf("\n");

    /* TCP: Query and reponse header and values */
    bytes = 12 + 9 + (nb_points / 8) + ((nb_points % 8) ? 1 : 0);
    printf("Values and TCP Modbus overhead:\n");
    printf("* %d x %d bytes\n", n_loop, bytes);
    bytes = n_loop * bytes;
    rate = bytes / 1024 * G_MSEC_PER_SEC / (end - start);
    printf("* %.3f ms for %d bytes\n", elapsed, bytes);
    printf("* %d KiB/s\n", rate);
    printf("\n\n");

    printf("READ REGISTERS\n\n");

    nb_points = MODBUS_MAX_READ_REGISTERS;
    start = gettime_ms();
    for (i=0; i<n_loop; i++) {
        rc = modbus_read_registers(ctx, 0, nb_points, tab_reg);
        if (rc == -1) {
            fprintf(stderr, "%s\n", modbus_strerror(errno));
            return -1;
        }
    }
    end = gettime_ms();
    elapsed = end - start;

    rate = (n_loop * nb_points) * G_MSEC_PER_SEC / (end - start);
    printf("Transfert rate in points/seconds:\n");
    printf("* %d registers/s\n", rate);
    printf("\n");

    bytes = n_loop * nb_points * sizeof(uint16_t);
    rate = bytes / 1024 * G_MSEC_PER_SEC / (end - start);
    printf("Values:\n");
    printf("* %d x %d values\n", n_loop, nb_points);
    printf("* %.3f ms for %d bytes\n", elapsed, bytes);
    printf("* %d KiB/s\n", rate);
    printf("\n");

    /* TCP:Query and reponse header and values */
    bytes = 12 + 9 + (nb_points * sizeof(uint16_t));
    printf("Values and TCP Modbus overhead:\n");
    printf("* %d x %d bytes\n", n_loop, bytes);
    bytes = n_loop * bytes;
    rate = bytes / 1024 * G_MSEC_PER_SEC / (end - start);
    printf("* %.3f ms for %d bytes\n", elapsed, bytes);
    printf("* %d KiB/s\n", rate);
    printf("\n\n");

    printf("READ AND WRITE REGISTERS\n\n");

    nb_points = MODBUS_MAX_RW_WRITE_REGISTERS;
    start = gettime_ms();
    for (i=0; i<n_loop; i++) {
        rc = modbus_write_and_read_registers(ctx,
                                             0, nb_points, tab_reg,
                                             0, nb_points, tab_reg);
        if (rc == -1) {
            fprintf(stderr, "%s\n", modbus_strerror(errno));
            return -1;
        }
    }
    end = gettime_ms();
    elapsed = end - start;

    rate = (n_loop * nb_points) * G_MSEC_PER_SEC / (end - start);
    printf("Transfert rate in points/seconds:\n");
    printf("* %d registers/s\n", rate);
    printf("\n");

    bytes = n_loop * nb_points * sizeof(uint16_t);
    rate = bytes / 1024 * G_MSEC_PER_SEC / (end - start);
    printf("Values:\n");
    printf("* %d x %d values\n", n_loop, nb_points);
    printf("* %.3f ms for %d bytes\n", elapsed, bytes);
    printf("* %d KiB/s\n", rate);
    printf("\n");

    /* TCP:Query and reponse header and values */
    bytes = 12 + 9 + (nb_points * sizeof(uint16_t));
    printf("Values and TCP Modbus overhead:\n");
    printf("* %d x %d bytes\n", n_loop, bytes);
    bytes = n_loop * bytes;
    rate = bytes / 1024 * G_MSEC_PER_SEC / (end - start);
    printf("* %.3f ms for %d bytes\n", elapsed, bytes);
    printf("* %d KiB/s\n", rate);
    printf("\n");

    /* Free the memory */
    free(tab_bit);
    free(tab_reg);

    /* Close the connection */
    modbus_close(ctx);
    modbus_free(ctx);

    return 0;
}
hover-highlight'><td/><td colspan='5' class='logmsg'>
only includes transmitters where there have been changes

Link: https://lore.kernel.org/linux-media/20210128234622.75009-1-simon@liddicott.com
Signed-off-by: Simon Liddicott &lt;simon@liddicott.com&gt;
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab+huawei@kernel.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2021-04-30 21:33:05 +0200'>2021-04-30</span></td><td class='logsubject'><a href='/dtv-scan-tables.git/commit/isdb-t/br-to-Tupirama?id=25ee9e0ce4bbacdb278d4cff306ceb6528c4f548&amp;follow=1'>update Brazilian scan files</a></td><td>Mauro Carvalho Chehab</td><td>2476</td><td><span class='deletions'>-12805</span>/<span class='insertions'>+69312</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Data updated according with https://portalbsd.com.br/.

Signed-off-by: Mauro Carvalho Chehab &lt;mchehab+huawei@kernel.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2021-04-30 13:29:02 +0200'>2021-04-30</span></td><td class='logsubject'><a href='/dtv-scan-tables.git/commit/dvb-s/Yamal201-90.0E?id=66ec1eabbf6a596b42f6d4802b6aead3e8ba1ad5&amp;follow=1'>Remove legacy entries</a></td><td>Mauro Carvalho Chehab</td><td>129</td><td><span class='deletions'>-24898</span>/<span class='insertions'>+0</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
There are several entries that used to be at Lyngsat.
Several of them were merged with other entries.
On others, there's no TV signal anymore.

So, drop them.

Signed-off-by: Mauro Carvalho Chehab &lt;mchehab+huawei@kernel.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2021-04-30 13:28:58 +0200'>2021-04-30</span></td><td class='logsubject'><a href='/dtv-scan-tables.git/commit/dvb-s/Yamal-601-49.0E?id=f46e7874dd45f03f47b31e8cd56108f3f10711f8&amp;follow=1'>Add new satellites from Lyngsat</a></td><td>Mauro Carvalho Chehab</td><td>75</td><td><span class='deletions'>-21</span>/<span class='insertions'>+29721</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Those are are new satellite descriptions that didn't use to
exist on Lyngsat. Add them.

Signed-off-by: Mauro Carvalho Chehab &lt;mchehab+huawei@kernel.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2021-04-30 10:31:15 +0200'>2021-04-30</span></td><td class='logsubject'><a href='/dtv-scan-tables.git/commit/dvb-s/Intelsat-38-45.1E?id=137a4b9176f8fb074c955a49ae97865d2fb85095&amp;follow=1'>Rename a few satellites with two names and update frequencies</a></td><td>Mauro Carvalho Chehab</td><td>2</td><td><span class='deletions'>-283</span>/<span class='insertions'>+182</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Those two satellites have two names. Use Just one of them.

While here, update their frequencies from Lyngsat.

Signed-off-by: Mauro Carvalho Chehab &lt;mchehab+huawei@kernel.org&gt;


</td></tr>
<tr class='logheader'><td><span title='2021-04-30 10:29:42 +0200'>2021-04-30</span></td><td class='logsubject'><a href='/dtv-scan-tables.git/commit/dvb-s/Yamal-402-54.9E?id=cf6e4b502139112c82f092001eb6b9ac3912182a&amp;follow=1'>Update frequencies from Lyngsat</a></td><td>Mauro Carvalho Chehab</td><td>188</td><td><span class='deletions'>-12304</span>/<span class='insertions'>+12666</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
Signed-off-by: Mauro Carvalho Chehab &lt;mchehab+huawei@kernel.org&gt;


</td></tr>