Gets the serial port parameters. The user_open_port() routine is passed only baud rate and parity. Use this routine to access data bits, stop bits, and flow control settings.
Syntax
void dcrp_get_serial_settings(port_id, data_bits, stop_bits,
rts_cts_control, xon_xoff_control)
char *port_id;
COR_I2 *data_bits;
COR_I2 *stop_bits;
COR_BOOLEAN *rts_cts_control;
COR_BOOLEAN *xon_xoff_control;
Input Parameters
port_id
Is the identifier of the port whose settings you want to get.
Output Parameters
data_bits
Is the number of data bits supported by the protocol. Valid value is 6, 7, or 8.
stop_bits
Is the number of stop bits supported by the protocol value. Valid value is 1 or 2.
rts_cts_control
Indicates whether the RTS (Ready To Send) and CTS (Clear To Send) lines are used for hardware flow control. This field contains one of the following:
|
TRUE |
Raise RTS and check CTS before transmitting data. This usually suggests that your serial port Data Control Block (DCB) setup includes the following: |
|
|
dcb.fOutxCtsFlow = TRUE; |
dcb.fRtsControl = RTS_CONTROL_TOGGLE;
|
FALSE |
The protocol does not use hardware flow control. |
xon_xoff_control
Indicates whether the XON/XOFF software flow control is to be used. This field contains one of the following:
|
TRUE |
XON/XOFF flow control is used. This usually suggests that your serial port Data Control Block (DCB) setup includes the following: |
|
|
dcb.fOutX = TRUE; |
dcb.fInX = TRUE;
|
FALSE |
The protocol does not use software flow control. |
|
|
Device Communications Toolkit other subroutines. |
