Printer processing

Presentation

Functions
int	prtStart (void)
	Start printer perypheral. More...
int	prtStop (void)
	Stop printer perypheral. More...
int	prtCtrl (void)
	Control paper presence. More...

Function Documentation

int prtStart

(

void

)

Start printer perypheral.

Open the associated channel. Should be called before calling any printing, normally before an event treatment.

Returns

• negative if failure.
• non negative if OK. Utilities.h Peripherals.c

int prtStop

(

void

)

Stop printer perypheral.

Close the associated channel. Should be called before returning to the idle prompt or before giving the control to another application.

Returns

• negative if failure.
• non negative if OK. Utilities.h Peripherals.c

int prtCtrl

(

void

)

Control paper presence.

Control paper presence for associated channel. Should be called before printing

Returns

• negative if failure.
  • zero if paper is absent
• positive if paper is present or if no information available. Utilities.h Peripherals.c