//------------------------------------------------------------------------------ // Copyright (C) 2010-2012, Robert Johansson and contributors, Raditex AB // All rights reserved. // // rSCADA // http://www.rSCADA.se // info@rscada.se // // Contributors: // Large parts of this file was contributed by Stefan Wahren. // //------------------------------------------------------------------------------ #include #include #include //------------------------------------------------------------------------------ // Execution starts here: //------------------------------------------------------------------------------ int main(int argc, char **argv) { mbus_handle *handle; mbus_frame reply; char *device; int address, ret; int source_baudrate = 9600, target_baudrate; if (argc == 4) { device = argv[1]; address = atoi(argv[2]); target_baudrate = atoi(argv[3]); } else if (argc == 6 && strcmp(argv[1], "-b") == 0) { source_baudrate = atoi(argv[2]); device = argv[3]; address = atoi(argv[4]); target_baudrate = atoi(argv[5]); } else { fprintf(stderr, "usage: %s [-b BAUDRATE] device address target-baudrate\n", argv[0]); return 0; } if ((handle = mbus_context_serial(device)) == NULL) { fprintf(stderr, "Could not initialize M-Bus context: %s\n", mbus_error_str()); return 1; } if (mbus_connect(handle) == -1) { fprintf(stderr,"Failed to setup connection to M-bus gateway\n"); return 1; } if (mbus_serial_set_baudrate(handle, source_baudrate) == -1) { fprintf(stderr,"Failed to set baud rate.\n"); return 1; } if (mbus_send_switch_baudrate_frame(handle, address, target_baudrate) == -1) { fprintf(stderr,"Failed to send switch baudrate frame: %s\n", mbus_error_str()); return 1; } ret = mbus_recv_frame(handle, &reply); if (ret == MBUS_RECV_RESULT_TIMEOUT) { fprintf(stderr,"No reply from device\n"); return 1; } else if (mbus_frame_type(&reply) != MBUS_FRAME_TYPE_ACK) { fprintf(stderr,"Unknown reply:\n"); mbus_frame_print(&reply); } else { printf("Switched baud rate of device to %d\n", target_baudrate); } mbus_disconnect(handle); mbus_context_free(handle); return 0; }