SW006012 Microchip Technology, SW006012 Datasheet - Page 92

• Manufacturer Part Number: SW006012
• Description: C COMPILER FOR DSPIC30F FAMILY
• Manufacturer: Microchip Technology
• Type: MPLAB® C30 Compilerr
• Series: PIC24 & DsPICr

Specifications of SW006012

• Supported Families: PIC24, DsPIC30F And DsPIC33F
• Core Architecture: PIC, DsPIC
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC24 MCUs And DsPIC DSCs
• Tool Type: Compiler
• Processor Series: PIC24, dsPIC
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: dsPIC30F
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MPLAB
DS51284F-page 86
®
C30 User’s Guide
EXAMPLE 6-1:
/*
** Sample Real Time Clock for dsPIC
**
**
**
*/
#include <p30f6014.h>
/* Timer1 period for 1 ms with FOSC = 20 MHz */
#define TMR1_PERIOD 0x1388
struct clockType
void reset_clock(void)
void
{
} volatile RTclock;
{
}
{ static int sticks=0;
}
unsigned int timer;
unsigned int ticks;
unsigned int seconds;
RTclock.timer = 0;
RTclock.ticks = 0;
RTclock.seconds = 0;
TMR1 = 0;
PR1 = TMR1_PERIOD;
T1CONbits.TCS = 0;
IPC0bits.T1IP = 4;
IFS0bits.T1IF = 0;
IEC0bits.T1IE = 1;
SRbits.IPL = 3;
T1CONbits.TON = 1;
Uses Timer1, TCY clock timer mode
and interrupt on period match
if (RTclock.timer > 0)
RTclock.ticks++;
if (sticks++ > 1000)
{
sticks = 0;
RTclock.seconds++;
}
IFS0bits.T1IF = 0;
return;
__
attribute
RTclock.timer -= 1;
__
SAMPLE REAL-TIME CLOCK
((
__
interrupt
/* countdown timer, milliseconds */
/* absolute time, milliseconds
/* absolute time, seconds
/* clear software registers
/* clear timer1 register
/* set period1 register
/* set internal clock source */
/* set priority level
/* clear interrupt flag
/* enable interrupts
/* enable CPU priority levels 4-7*/
/* start the timer*/
/* if countdown timer is active */
/*
/* increment ticks counter
/*
/*
/* clear interrupt flag
/* if time to rollover
__
decrement it
clear seconds ticks
and increment seconds
)) _T1Interrupt(void)
© 2007 Microchip Technology Inc.
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/