예제 #1
0
RS232_LIB unsigned int
rs232_open(struct rs232_port_t *p)
{
	wchar_t *wname = a2w(fix_device_name(p->dev));
	struct rs232_windows_t *wx = p->pt;

	DBG("p=%p p->pt=%p name='%s' fix='%s'\n",
	    (void *)p, p->pt, p->dev, fix_device_name(p->dev));

	if (wname == NULL)
		return RS232_ERR_UNKNOWN;

	wx->fd = CreateFileW(wname, GENERIC_READ | GENERIC_WRITE,	// Force Unicode version of CreateFile() -hg
			    FILE_SHARE_READ | FILE_SHARE_WRITE,
			    NULL, OPEN_EXISTING, 0, NULL);

	if (wname)
		free(wname);

	if (wx->fd == INVALID_HANDLE_VALUE) {
		DBG("CreateFile() %s\n", last_error());
		return RS232_ERR_OPEN;
	}

	p->status = RS232_PORT_OPEN;
	rs232_flush(p);

	GET_PORT_STATE(wx->fd, &wx->old_dcb);
	GET_PORT_TIMEOUTS(wx->fd, &wx->old_tm);

	port_timeout(p, wx->r_timeout, wx->w_timeout);
	port_buffers(p, wx->r_buffer, wx->w_buffer);

	rs232_set_baud(p, p->baud);
	rs232_set_data(p, p->data);
	rs232_set_parity(p, p->parity);
	rs232_set_stop(p, p->stop);
	rs232_set_flow(p, p->flow);

	return RS232_ERR_NOERROR;
}
예제 #2
0
RS232_LIB unsigned int
rs232_set_data(struct rs232_port_t *p, enum rs232_data_e data)
{
	DCB pdcb;
	struct rs232_windows_t *wx = p->pt;

	DBG("p=%p p->pt=%p data=%d (%s data bits)\n",
	    (void *)p, p->pt, data, rs232_strdata(data));

	if (!rs232_port_open(p))
		return RS232_ERR_PORT_CLOSED;

	GET_PORT_STATE(wx->fd, &pdcb);

	switch (data) {
	case RS232_DATA_5:
		pdcb.ByteSize = 5;
		break;
	case RS232_DATA_6:
		pdcb.ByteSize = 6;
		break;
	case RS232_DATA_7:
		pdcb.ByteSize = 7;
		break;
	case RS232_DATA_8:
		pdcb.ByteSize = 8;
		break;
	default:
		return RS232_ERR_UNKNOWN;
	}

	SET_PORT_STATE(wx->fd, &pdcb);
	p->data = data;

	return RS232_ERR_NOERROR;
}