libmbus/bin/mbus-tcp-select-secondary.c

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//------------------------------------------------------------------------------
// Copyright (C) 2011, Robert Johansson, Raditex AB
// All rights reserved.
//
// FreeSCADA
// http://www.FreeSCADA.com
// freescada@freescada.com
//
//------------------------------------------------------------------------------
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <mbus/mbus.h>
//------------------------------------------------------------------------------
// Execution starts here:
//------------------------------------------------------------------------------
int
main(int argc, char **argv)
{
mbus_handle *handle;
mbus_frame reply;
char *host, *addr;
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int port, ret;
if (argc != 4)
{
printf("usage: %s host port secondary-mbus-address\n", argv[0]);
return 0;
}
host = argv[1];
port = atoi(argv[2]);
addr = strdup(argv[3]);
if (strlen(argv[3]) != 16)
{
printf("Misformatted secondary address. Must be 16 character HEX number.\n");
return -1;
}
if ((handle = mbus_connect_tcp(host, port)) == NULL)
{
printf("Failed to setup connection to M-bus gateway: %s\n", mbus_error_str());
return -1;
}
if (mbus_send_select_frame(handle, addr) == -1)
{
printf("Failed to send selection frame: %s\n", mbus_error_str());
return -1;
}
ret = mbus_recv_frame(handle, &reply);
if (ret == -1)
{
printf("No reply from device with secondary address %s: %s\n", argv[3], mbus_error_str());
return -1;
}
if (ret == -2)
{
printf("Invalid reply from %s: The address address probably match more than one device: %s\n", argv[3], mbus_error_str());
return -1;
}
if (mbus_frame_type(&reply) == MBUS_FRAME_TYPE_ACK)
{
if (mbus_send_request_frame(handle, 253) == -1)
{
printf("Failed to send request to selected secondary device: %s\n", mbus_error_str());
return -1;
}
if (mbus_recv_frame(handle, &reply) == -1)
{
printf("Failed to recieve reply from selected secondary device: %s\n", mbus_error_str());
return -1;
}
if (mbus_frame_type(&reply) != MBUS_FRAME_TYPE_ACK)
{
printf("Recieved a reply from secondarily addressed device: Searched for [%s] and found [%s].\n",
argv[3], mbus_frame_get_secondary_address(&reply));
}
}
else
{
printf("Unknown reply:\n");
mbus_frame_print(&reply);
}
free(addr);
mbus_disconnect(handle);
return 0;
}