VersaLogic Komodo VL-EPICs-36 Reference Manual page 31

while (keypressed
{
if (kbhit())
{
keypressed = getch();
}
/* Read FanTach1 LSB first, latches MSB.
outp( Bindex, FANTACHREG
FTraw = inp( Bdata
outp( Bindex, FANTACHREG
FTraw += inp( Bdata
/* FTraw now contains the number of 90KHz pulses it took to find 5 tach edges.
(5 edges = 2 tach pulses = 1 revolution)
/* Convert Raw to RPMs...
RPM = 1 / (FTraw * 11.11uS / 2) * 60
fanRPM = FTraw * 0.00001111;
fanRPM /= 2;
fanRPM = 1/fanRPM;
_settextposition(4,1);
if ( fanRPM > 0
{
printf ( "FanTach 1: %5.0fRPMs
delay(100);
}
else
{
printf ( "FanTach 1: Stalled! \n"
delay(100);
}
}
exit ( 0 );
}
VL-EPICs-36 Reference Manual
!= ESC)
);
);
+ 1 );
) << 8;
)
//Fantach 1 LSB
//Fantach 1 MSB
\n",fanRPM*60 );
);
System Features
*/
*/
*/
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