random-test-master.c
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/*
* Copyright © 2001-2008 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 "modbus.h"
/* The goal of this program is to check all major functions of
libmodbus:
- force_single_coil
- read_coil_status
- force_multiple_coils
- preset_single_register
- read_holding_registers
- preset_multiple_registers
- read_holding_registers
All these functions are called with random values on a address
range defined by the following defines.
*/
#define LOOP 1
#define SLAVE 0x11
#define ADDRESS_START 0
#define ADDRESS_END 99
/* At each loop, the program works in the range ADDRESS_START to
* ADDRESS_END then ADDRESS_START + 1 to ADDRESS_END and so on.
*/
int main(void)
{
int ret;
int nb_fail;
int nb_loop;
int addr;
int nb;
uint8_t *tab_rq_status;
uint8_t *tab_rp_status;
uint16_t *tab_rq_registers;
uint16_t *tab_rp_registers;
modbus_param_t mb_param;
/* RTU parity : none, even, odd */
/* modbus_init_rtu(&mb_param, "/dev/ttyS0", 19200, "none", 8, 1); */
/* TCP */
modbus_init_tcp(&mb_param, "127.0.0.1", 1502);
modbus_set_debug(&mb_param, TRUE);
if (modbus_connect(&mb_param) == -1) {
printf("ERROR Connection failed\n");
exit(1);
}
/* Allocate and initialize the different memory spaces */
nb = ADDRESS_END - ADDRESS_START;
tab_rq_status = (uint8_t *) malloc(nb * sizeof(uint8_t));
memset(tab_rq_status, 0, nb * sizeof(uint8_t));
tab_rp_status = (uint8_t *) malloc(nb * sizeof(uint8_t));
memset(tab_rp_status, 0, nb * sizeof(uint8_t));
tab_rq_registers = (uint16_t *) malloc(nb * sizeof(uint16_t));
memset(tab_rq_registers, 0, nb * sizeof(uint16_t));
tab_rp_registers = (uint16_t *) malloc(nb * sizeof(uint16_t));
memset(tab_rp_registers, 0, nb * sizeof(uint16_t));
nb_loop = nb_fail = 0;
while (nb_loop++ < LOOP) {
for (addr = ADDRESS_START; addr <= ADDRESS_END; addr++) {
int i;
/* Random numbers (short) */
for (i=0; i<nb; i++) {
tab_rq_registers[i] = (uint16_t) (65535.0*rand() / (RAND_MAX + 1.0));
tab_rq_status[i] = tab_rq_registers[i] % 2;
}
nb = ADDRESS_END - addr;
/* SINGLE COIL */
ret = force_single_coil(&mb_param, SLAVE, addr, tab_rq_status[0]);
if (ret != 1) {
printf("ERROR force_single_coil (%d)\n", ret);
printf("Slave = %d, address = %d, value = %d\n",
SLAVE, addr, tab_rq_status[0]);
nb_fail++;
} else {
ret = read_coil_status(&mb_param, SLAVE, addr, 1, tab_rp_status);
if (ret != 1 || tab_rq_status[0] != tab_rp_status[0]) {
printf("ERROR read_coil_status single (%d)\n", ret);
printf("Slave = %d, address = %d\n",
SLAVE, addr);
nb_fail++;
}
}
/* MULTIPLE COILS */
ret = force_multiple_coils(&mb_param, SLAVE, addr, nb, tab_rq_status);
if (ret != nb) {
printf("ERROR force_multiple_coils (%d)\n", ret);
printf("Slave = %d, address = %d, nb = %d\n",
SLAVE, addr, nb);
nb_fail++;
} else {
ret = read_coil_status(&mb_param, SLAVE, addr, nb, tab_rp_status);
if (ret != nb) {
printf("ERROR read_coil_status\n");
printf("Slave = %d, address = %d, nb = %d\n",
SLAVE, addr, nb);
nb_fail++;
} else {
for (i=0; i<nb; i++) {
if (tab_rp_status[i] != tab_rq_status[i]) {
printf("ERROR read_coil_status\n");
printf("Slave = %d, address = %d, value %d (0x%X) != %d (0x%X)\n",
SLAVE, addr,
tab_rq_status[i], tab_rq_status[i],
tab_rp_status[i], tab_rp_status[i]);
nb_fail++;
}
}
}
}
/* SINGLE REGISTER */
ret = preset_single_register(&mb_param, SLAVE, addr, tab_rq_registers[0]);
if (ret != 1) {
printf("ERROR preset_single_register (%d)\n", ret);
printf("Slave = %d, address = %d, value = %d (0x%X)\n",
SLAVE, addr, tab_rq_registers[0], tab_rq_registers[0]);
nb_fail++;
} else {
ret = read_holding_registers(&mb_param, SLAVE,
addr, 1, tab_rp_registers);
if (ret != 1) {
printf("ERROR read_holding_registers single (%d)\n", ret);
printf("Slave = %d, address = %d\n",
SLAVE, addr);
nb_fail++;
} else {
if (tab_rq_registers[0] != tab_rp_registers[0]) {
printf("ERROR read_holding_registers single\n");
printf("Slave = %d, address = %d, value = %d (0x%X) != %d (0x%X)\n",
SLAVE, addr,
tab_rq_registers[0], tab_rq_registers[0],
tab_rp_registers[0], tab_rp_registers[0]);
nb_fail++;
}
}
}
/* MULTIPLE REGISTERS */
ret = preset_multiple_registers(&mb_param, SLAVE,
addr, nb, tab_rq_registers);
if (ret != nb) {
printf("ERROR preset_multiple_registers (%d)\n", ret);
printf("Slave = %d, address = %d, nb = %d\n",
SLAVE, addr, nb);
nb_fail++;
} else {
ret = read_holding_registers(&mb_param, SLAVE,
addr, nb, tab_rp_registers);
if (ret != nb) {
printf("ERROR read_holding_registers (%d)\n", ret);
printf("Slave = %d, address = %d, nb = %d\n",
SLAVE, addr, nb);
nb_fail++;
} else {
for (i=0; i<nb; i++) {
if (tab_rq_registers[i] != tab_rp_registers[i]) {
printf("ERROR read_holding_registers\n");
printf("Slave = %d, address = %d, value %d (0x%X) != %d (0x%X)\n",
SLAVE, addr,
tab_rq_registers[i], tab_rq_registers[i],
tab_rp_registers[i], tab_rp_registers[i]);
nb_fail++;
}
}
}
}
}
printf("Test: ");
if (nb_fail)
printf("%d FAILS\n", nb_fail);
else
printf("SUCCESS\n");
}
/* Free the memory */
free(tab_rq_status);
free(tab_rp_status);
free(tab_rq_registers);
free(tab_rp_registers);
/* Close the connection */
modbus_close(&mb_param);
return 0;
}