Port signalling operations

Functions
enum sp_return	sp_get_signals (struct sp_port *port, enum sp_signal *signals)
	Gets the status of the control signals for the specified port. More...
enum sp_return	sp_start_break (struct sp_port *port)
	Put the port transmit line into the break state. More...
enum sp_return	sp_end_break (struct sp_port *port)
	Take the port transmit line out of the break state. More...

Detailed Description

Function Documentation

enum sp_return sp_end_break

(

struct sp_port *

port

)

Take the port transmit line out of the break state.

Parameters

port	Pointer to port structure.

Returns

SP_OK upon success, a negative error code otherwise.

Since

0.1.0

enum sp_return sp_get_signals	(	struct sp_port *	port,
		enum sp_signal *	signals
	)

Gets the status of the control signals for the specified port.

The user should allocate a variable of type "enum sp_signal" and pass a pointer to this variable to receive the result. The result is a bitmask in which individual signals can be checked by bitwise OR with values of the sp_signal enum.

Parameters

port	Pointer to port structure.
signals	Pointer to variable to receive result.

Returns

SP_OK upon success, a negative error code otherwise.

Since

0.1.0

enum sp_return sp_start_break

(

struct sp_port *

port

)

Put the port transmit line into the break state.

Parameters

port	Pointer to port structure.

Returns

SP_OK upon success, a negative error code otherwise.

Since

0.1.0