New Micros NMIY-0031, Руководство пользователя

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2 / 2 6 / 2 0 0 2 2 : 0 6 P M 2 / 2 6 / 2 0 0 2 1 2 3
N M I L - 5 0 0 0 A C I A S E R I A L C O M M U N I C A T I O N
C S A M P L E P R O G R A M
rts_test()
{
cmmand = 0xCB; cntrol = 0x1C; initialize();
printf("\n\n");
do
{
pokeb(COMMAND_REG, (peekb(COMMAND_REG) | 0x08) );
while ( rd_status() != 0x08 ) ;
pokeb(COMMAND_REG, (peekb(COMMAND_REG) & 0xF3) );
}
while( fputc(data_in(), stdout) != 3);
} /* end rts test */
status_report()
{
int status;
printf("\n\n");
status = peekb(STATUS_REG);
if (status & 0x80) printf("\n Interrupt has occurred ");
else if (status & 0x40) printf("\n DSR High (not ready) ");
else if (status & 0x20) printf("\n DCD High ( not ready)");
else if ((status & 0x10)==0) printf("\n Transmitter not empty ");
else if (status & 0x08) printf("\n Receiver data register full ");
else if (status & 0x04) printf("\n Overrun has occurred ");
else if (status & 0x02) printf("\n Framing error detected ");
else if (status & 0x01) printf("\n Parity error detected ");
else if (status == 0x10) printf("\n Status is: waiting for data. ");
} /* end status report */
stop_bits_report()
{
printf("\n");
cntrol = peekb(CONTROL_REG) & 0xE0;
switch (cntrol & 0x60)
{
case 0x0 : printf(" 8 bits "); break;
case 0x20 : printf(" 7 bits "); break;
case 0x40 : printf(" 6 bits "); break;
case 0x60 : printf(" 5 bits ");
default : break;
} /* end switch */
if (cntrol < 0x80)
printf(" 1 stop bit ");
else
{
cmmand = peekb(COMMAND_REG) & 0x20;
cntrol = cntrol & 0x60;
if ((cntrol == 0) && (cmmand == 0x20))
printf(" 1 stop bit ");
else if ((cntrol != 0x60) || (cmmand != 0))
printf(" 2 stop bits ");
else
printf(" 1.5 stop bits ");
} /* end if-else cntrol<0x80 */
} /* end stop bits report */
td_status()
{
return( peekb(STATUS_REG) & 0x10 ) ;
} /* end td status */