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serXflowcontrolOn

void serXflowcontrolOn( void ); /* where X is A-F */

Description

Turns on hardware flow control for channel X. This enables two digital lines that handle flow control, CTS (clear to send) and RTS (ready to send). CTS is an input that will be pulled active low by the other system when it is ready to receive data. The RTS signal is an output that the system uses to indicate that it is ready to receive data; it is driven low when data can be received. A call to serXopen() must be made before calling this function.

This function is non-reentrant.

The functions serEflowcontrolOn() and serFflowcontrolOn() may be used with the Rabbit 3000 and Rabbit 4000.

If pins for the flow control lines are not explicitly defined, defaults will be used and compiler warnings will be issued. The locations of the flow control lines are specified using a set of 5 macros.

SERX_RTS_PORT

Data register for the parallel port that the RTS line is on. e.g. PCDR

SERA_RTS_SHADOW

Shadow register for the RTS line's parallel port. e.g. PCDRShadow

SERA_RTS_BIT

The bit number for the RTS line

SERA_CTS_PORT

Data register for the parallel port that the CTS line is on

SERA_CTS_BIT

The bit number for the CTS line

Library

RS232.LIB