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#include "modbus/modbus.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>

int main()
{
	modbus_t *ctx = modbus_new_tcp("192.168.1.6", 1502);
	if (!ctx) {
		fprintf(stderr, "Failed to create the context: %s\n", modbus_strerror(errno));
		exit(1);
	}

	if (modbus_connect(ctx) == -1) {
		fprintf(stderr, "Unable to connect: %s\n", modbus_strerror(errno));
		modbus_free(ctx);
		exit(1);
	}


	uint16_t reg[1];

	int num = modbus_read_registers(ctx, 1, 1, reg);
	if (num != 1) {
		fprintf(stderr, "Failed to read: %s\n", modbus_strerror(errno));
	}

	modbus_close(ctx);
	modbus_free(ctx);
}