📄 timer0.c
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#include "reg51.h"
#include "Global.h"
#include "Timer0.h"
#define OSDTIME 4000//12500 //25000 //100000 //0x00FF
#define COLORCALTIME 0x0010
#define TIMER0_COUNT 0xFBEF //FDF7 //0xFF7D
void Timer0Start(void);
void Timer0Stop(void);
void Timer0INT(void) interrupt 1
{
TL0=TIMER0_COUNT&0x00FF;
TH0=TIMER0_COUNT>>8;
if(m_wTimer0Cnt==OSDTIME)
{
m_bTimer0Overflow=1;
}
else
m_wTimer0Cnt++;
}
void Timer0Reset(void)
{
TL0 = (TIMER0_COUNT & 0x00FF);
TH0 = (TIMER0_COUNT >> 8);
m_wTimer0Cnt=0;
m_bTimer0Overflow=0;
}
void Timer0Start(void)
{
Timer0Reset();
TR0=1;
}
void Timer0Stop(void)
{
TR0=0;
Timer0Reset();
m_bTimer0Overflow=0;
}
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