initmcu.c

SPWM三相波形发生器

#include <reg52.h>

	
void initMCU(void)
{
	EA = 0;	
	ES = 0;
//config timer 1 as a baudrate generator as 9600 bps
	SCON = 0x50;
	TMOD |= 0x20;
	TH1 = 253;
	TL1 = 253;
	TR1 = 1;
	TI = 1;

// init timer 2   10 ms interval duration :65536- (10 *10e-3*11059200/12) = 56320
	ET2 = 1;
	RCAP2H = 0xDC;
	RCAP2L = 0x00;
	TH2 = 0xDC;
	TL2 = 0x00;
	TR2 = 1;
	EA = 1;


//	init timer 0,mode 1, 8 bits ,auto reload,10 ms interval duration:
//	TMOD = (TMOD & 0xF0) | 0x01;
/*	TMOD |= 0x01;
	TH0 = 0xDC;
	TL0 = 0x00;
	ET0 = 1;
	TR0 = 1;
	EA =1;
*/
}