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-rw-r--r--tests/random-test-client.c253
1 files changed, 253 insertions, 0 deletions
diff --git a/tests/random-test-client.c b/tests/random-test-client.c
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+/*
+ * Copyright © 2001-2010 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 <errno.h>
+
+#include <modbus.h>
+
+/* The goal of this program is to check all major functions of
+ libmodbus:
+ - write_coil
+ - read_bits
+ - write_coils
+ - write_register
+ - read_registers
+ - write_registers
+ - read_registers
+
+ All these functions are called with random values on a address
+ range defined by the following defines.
+*/
+#define LOOP 1
+#define SERVER_ID 17
+#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)
+{
+ modbus_t *ctx;
+ int rc;
+ int nb_fail;
+ int nb_loop;
+ int addr;
+ int nb;
+ uint8_t *tab_rq_bits;
+ uint8_t *tab_rp_bits;
+ uint16_t *tab_rq_registers;
+ uint16_t *tab_rw_rq_registers;
+ uint16_t *tab_rp_registers;
+
+ /* RTU */
+/*
+ ctx = modbus_new_rtu("/dev/ttyUSB0", 19200, 'N', 8, 1);
+ modbus_set_slave(ctx, SERVER_ID);
+*/
+
+ /* TCP */
+ ctx = modbus_new_tcp("127.0.0.1", 1502);
+ modbus_set_debug(ctx, TRUE);
+
+ if (modbus_connect(ctx) == -1) {
+ fprintf(stderr, "Connection failed: %s\n",
+ modbus_strerror(errno));
+ modbus_free(ctx);
+ return -1;
+ }
+
+ /* Allocate and initialize the different memory spaces */
+ nb = ADDRESS_END - ADDRESS_START;
+
+ tab_rq_bits = (uint8_t *) malloc(nb * sizeof(uint8_t));
+ memset(tab_rq_bits, 0, nb * sizeof(uint8_t));
+
+ tab_rp_bits = (uint8_t *) malloc(nb * sizeof(uint8_t));
+ memset(tab_rp_bits, 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));
+
+ tab_rw_rq_registers = (uint16_t *) malloc(nb * sizeof(uint16_t));
+ memset(tab_rw_rq_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_rw_rq_registers[i] = ~tab_rq_registers[i];
+ tab_rq_bits[i] = tab_rq_registers[i] % 2;
+ }
+ nb = ADDRESS_END - addr;
+
+ /* WRITE BIT */
+ rc = modbus_write_bit(ctx, addr, tab_rq_bits[0]);
+ if (rc != 1) {
+ printf("ERROR modbus_write_bit (%d)\n", rc);
+ printf("Address = %d, value = %d\n", addr, tab_rq_bits[0]);
+ nb_fail++;
+ } else {
+ rc = modbus_read_bits(ctx, addr, 1, tab_rp_bits);
+ if (rc != 1 || tab_rq_bits[0] != tab_rp_bits[0]) {
+ printf("ERROR modbus_read_bits single (%d)\n", rc);
+ printf("address = %d\n", addr);
+ nb_fail++;
+ }
+ }
+
+ /* MULTIPLE BITS */
+ rc = modbus_write_bits(ctx, addr, nb, tab_rq_bits);
+ if (rc != nb) {
+ printf("ERROR modbus_write_bits (%d)\n", rc);
+ printf("Address = %d, nb = %d\n", addr, nb);
+ nb_fail++;
+ } else {
+ rc = modbus_read_bits(ctx, addr, nb, tab_rp_bits);
+ if (rc != nb) {
+ printf("ERROR modbus_read_bits\n");
+ printf("Address = %d, nb = %d\n", addr, nb);
+ nb_fail++;
+ } else {
+ for (i=0; i<nb; i++) {
+ if (tab_rp_bits[i] != tab_rq_bits[i]) {
+ printf("ERROR modbus_read_bits\n");
+ printf("Address = %d, value %d (0x%X) != %d (0x%X)\n",
+ addr, tab_rq_bits[i], tab_rq_bits[i],
+ tab_rp_bits[i], tab_rp_bits[i]);
+ nb_fail++;
+ }
+ }
+ }
+ }
+
+ /* SINGLE REGISTER */
+ rc = modbus_write_register(ctx, addr, tab_rq_registers[0]);
+ if (rc != 1) {
+ printf("ERROR modbus_write_register (%d)\n", rc);
+ printf("Address = %d, value = %d (0x%X)\n",
+ addr, tab_rq_registers[0], tab_rq_registers[0]);
+ nb_fail++;
+ } else {
+ rc = modbus_read_registers(ctx, addr, 1, tab_rp_registers);
+ if (rc != 1) {
+ printf("ERROR modbus_read_registers single (%d)\n", rc);
+ printf("Address = %d\n", addr);
+ nb_fail++;
+ } else {
+ if (tab_rq_registers[0] != tab_rp_registers[0]) {
+ printf("ERROR modbus_read_registers single\n");
+ printf("Address = %d, value = %d (0x%X) != %d (0x%X)\n",
+ addr, tab_rq_registers[0], tab_rq_registers[0],
+ tab_rp_registers[0], tab_rp_registers[0]);
+ nb_fail++;
+ }
+ }
+ }
+
+ /* MULTIPLE REGISTERS */
+ rc = modbus_write_registers(ctx, addr, nb, tab_rq_registers);
+ if (rc != nb) {
+ printf("ERROR modbus_write_registers (%d)\n", rc);
+ printf("Address = %d, nb = %d\n", addr, nb);
+ nb_fail++;
+ } else {
+ rc = modbus_read_registers(ctx, addr, nb, tab_rp_registers);
+ if (rc != nb) {
+ printf("ERROR modbus_read_registers (%d)\n", rc);
+ printf("Address = %d, nb = %d\n", addr, nb);
+ nb_fail++;
+ } else {
+ for (i=0; i<nb; i++) {
+ if (tab_rq_registers[i] != tab_rp_registers[i]) {
+ printf("ERROR modbus_read_registers\n");
+ printf("Address = %d, value %d (0x%X) != %d (0x%X)\n",
+ addr, tab_rq_registers[i], tab_rq_registers[i],
+ tab_rp_registers[i], tab_rp_registers[i]);
+ nb_fail++;
+ }
+ }
+ }
+ }
+ /* R/W MULTIPLE REGISTERS */
+ rc = modbus_write_and_read_registers(ctx,
+ addr, nb, tab_rw_rq_registers,
+ addr, nb, tab_rp_registers);
+ if (rc != nb) {
+ printf("ERROR modbus_read_and_write_registers (%d)\n", rc);
+ printf("Address = %d, nb = %d\n", addr, nb);
+ nb_fail++;
+ } else {
+ for (i=0; i<nb; i++) {
+ if (tab_rp_registers[i] != tab_rw_rq_registers[i]) {
+ printf("ERROR modbus_read_and_write_registers READ\n");
+ printf("Address = %d, value %d (0x%X) != %d (0x%X)\n",
+ addr, tab_rp_registers[i], tab_rw_rq_registers[i],
+ tab_rp_registers[i], tab_rw_rq_registers[i]);
+ nb_fail++;
+ }
+ }
+
+ rc = modbus_read_registers(ctx, addr, nb, tab_rp_registers);
+ if (rc != nb) {
+ printf("ERROR modbus_read_registers (%d)\n", rc);
+ printf("Address = %d, nb = %d\n", addr, nb);
+ nb_fail++;
+ } else {
+ for (i=0; i<nb; i++) {
+ if (tab_rw_rq_registers[i] != tab_rp_registers[i]) {
+ printf("ERROR modbus_read_and_write_registers WRITE\n");
+ printf("Address = %d, value %d (0x%X) != %d (0x%X)\n",
+ addr, tab_rw_rq_registers[i], tab_rw_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_bits);
+ free(tab_rp_bits);
+ free(tab_rq_registers);
+ free(tab_rp_registers);
+
+ /* Close the connection */
+ modbus_close(ctx);
+ modbus_free(ctx);
+
+ return 0;
+}
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