SN8F5708 datasheet(88/204 Pages) SONIX

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SN8F5708 Series

Timer 0 and Timer 1

Datasheet Rev. 2.4

14.7

Sample Code

The following sample code demonstrates how to perform T0/T1 with interrupt.

#define T0Mode0

(0 << 0) //T0 mode0, 13-bit counter

#define T0Mode1

(1 << 0) //T0 mode1, 16-bit counter

#define T0Mode2

(2 << 0) //T0 mode2, 8-bit auto-reload counter

#define T0Mode3

(3 << 0) //T0 mode3, T0 two 8-bit counter/T1 no flag

#define T0GATE

(8 << 0) //T0 gating clock by INT0

#define T0ClkFcpu

(0 << 0) //T0 clock source from Fcpu/12

#define T0ClkExt

(4 << 0) //T0 clock source from Fosc or FRTC

#define T0ExtFosc

(0 << 4) //T0 clock source from Fosc

#define T0ExtFRTC

(8 << 4) //T0 clock source from FRTC

#define T1Mode0

(0 << 4) //T1 mode0, 13-bit counter

#define T1Mode1

(1 << 4) //T1 mode1, 16-bit counter

#define T1Mode2

(2 << 4) //T1 mode2, 8-bit auto-reload counter

#define T1Mode3

(3 << 4) //T1 mode3, T1 stop

#define T1GATE

(8 << 4) //T1 gating clock by INT1

#define T1ClkFcpu

(0 << 4) //T1 clock source from Fcpu/12

#define T1ClkExt

(4 << 4) //T1 clock source from Fosc

void InitT0T1(void)

{

// T0/T1_Initial

TH0 = 0x00;

TL0 = 0x00;

TH1 = 0x00;

TL1 = 0x00;

// T0 mode0 with gating clock by INT0, clock source from Fosc or FRTC

TMOD |= T0Mode0 | T0GATE | T0ClkExT;

// T0 clock source = FRTC/1

TCON0 |= T0ExtFRTC | 0x70;

// T1 mode1, clock source from Fcpu/12

TMOD |= T1Mode1 | T1ClkFcpu;

// Timer 0/1 enable. Clear TF0/TF1

TCON |= 0x50;

// Enable T0/T1 interrupt

IEN0 |= 0x0A;

// Enable total interrupt

IEN0 |= 0x80;

P0 = 0x00;

P0M = 0x03;

}

void T0Interrupt(void) interrupt ISRTimer0 //0x0B

{ //TF0 clear by hardware

P00 = ~P00;

}

void T1Interrupt(void) interrupt ISRTimer1 //0x1B

{ //TF1 clear by hardware

P01 = ~P01;

}

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