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IC.c
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#if defined(__dsPIC33F__)
#include <p33Fxxxx.h>
#elif defined(__PIC24H__)
#include <p24hxxxx.h>
#endif
#include "IC.h"
void InitIC()
{
IC1CONbits.ICM=0b000; // Disable Input Capture 1 module
IC1CONbits.ICTMR= 1;
IC2CONbits.ICM=0b000; // Disable Input Capture 1 module
IC2CONbits.ICTMR= 1;
IC3CONbits.ICM=0b000;
IC3CONbits.ICTMR= 1;
IC4CONbits.ICM=0b000; // Disable Input Capture 1 module
IC4CONbits.ICTMR= 1;
IC5CONbits.ICM=0b000; // Disable Input Capture 1 module
IC5CONbits.ICTMR= 1;
IC6CONbits.ICM=0b000; // Disable Input Capture 1 module
IC6CONbits.ICTMR= 1;
IC7CONbits.ICM=0b000; // Disable Input Capture 1 module
IC7CONbits.ICTMR= 1;
IC8CONbits.ICM=0b000; // Disable Input Capture 1 module
IC8CONbits.ICTMR= 1;
}
void StartIC()
{
unsigned int temp;
while(IC1CONbits.ICBNE == 1)
{
temp = IC1BUF;
}
while(IC2CONbits.ICBNE == 1)
{
temp = IC2BUF;
}
while(IC3CONbits.ICBNE == 1)
{
temp = IC3BUF;
}
while(IC4CONbits.ICBNE == 1)
{
temp = IC4BUF;
}
while(IC5CONbits.ICBNE == 1)
{
temp = IC5BUF;
}
while(IC6CONbits.ICBNE == 1)
{
temp = IC6BUF;
}
while(IC7CONbits.ICBNE == 1)
{
temp = IC7BUF;
}
while(IC8CONbits.ICBNE == 1)
{
temp = IC8BUF;
}
IC1CONbits.ICM=0b100; // Every 4th edge
IC2CONbits.ICM=0b100;
IC3CONbits.ICM=0b100;
IC4CONbits.ICM=0b100;
IC5CONbits.ICM=0b100;
IC6CONbits.ICM=0b100;
IC7CONbits.ICM=0b100;
IC8CONbits.ICM=0b100;
}
void StopIC()
{
IC1CONbits.ICM=0b000;
IC2CONbits.ICM=0b000;
IC3CONbits.ICM=0b000;
IC4CONbits.ICM=0b000;
IC5CONbits.ICM=0b000;
IC6CONbits.ICM=0b000;
IC7CONbits.ICM=0b000;
IC8CONbits.ICM=0b000;
}
unsigned int GetPeriod(int Channel)
{
unsigned int IC1,IC2,IC3;
unsigned int PR1,PR2;
switch(Channel)
{
case 1:
IC1 = IC1BUF;
IC2 = IC1BUF;
IC3 = IC1BUF;
break;
case 2:
IC1 = IC2BUF;
IC2 = IC2BUF;
IC3 = IC2BUF;
break;
case 3:
IC1 = IC3BUF;
IC2 = IC3BUF;
IC3 = IC3BUF;
break;
case 4:
IC1 = IC4BUF;
IC2 = IC4BUF;
IC3 = IC4BUF;
break;
case 5:
IC1 = IC5BUF;
IC2 = IC5BUF;
IC3 = IC5BUF;
break;
case 6:
IC1 = IC6BUF;
IC2 = IC6BUF;
IC3 = IC6BUF;
break;
case 7:
IC1 = IC7BUF;
IC2 = IC7BUF;
IC3 = IC7BUF;
break;
case 8:
IC1 = IC8BUF;
IC2 = IC8BUF;
IC3 = IC8BUF;
break;
default:
IC1 = 0;
IC2 = 0;
IC3 = 0;
}
if(IC2<IC1)
{
PR1 = 65535 - IC1;
PR1 = PR1 + IC2;
}
else
{
PR1 = IC2 - IC1;
}
if(IC3<IC2)
{
PR2 = 65535 - IC2;
PR2 = PR1 + IC3;
}
else
{
PR2 = IC3 - IC2;
}
return (PR1+PR2)>>1;
}