PWM1.rar_attiny24

/*-------------------------------------------------------- Atiny24-PWM: 此版本使用T1的两路PWM输出 PWM mode: TCCR0A: COM0A1-COM0A0-COM0B1-COM0B0 - - WGM01-WGM00 TCCR0B: FOC0A-FOC0B - - WGM02-CS02-CS01-CS00 TCCR1A: COM1A1-COM1A0-COM1B1-COM1B0 - - WGM11-WGM10 TCCR1B: ICNC1-ICES1 - WGM13-WGM12-CS12-CS11-CS10 ---------------------------------------------------------*/ #include "iot24v.h" #include "macros.h" #include "selffile.h" unsigned int OCR1A_temp,OCR1B_temp; /*---------------------------------------- 主程序 ----------------------------------------*/ void main(void) { NOP(); CLI(); //WTCHDOG_init(); OCR1A_temp=0; OCR1B_temp=0; MCU_init(); SEI(); while(1) ; /*{ Delay_nms(200); OCR1A_temp+=2; OCR1B_temp+=4; if(OCR1A_temp>=0x3ff) OCR1A_temp=0; if(OCR1B_temp>=0x3ff) OCR1B_temp=0; OCR1A=OCR1A_temp; OCR1B=OCR1B_temp; }*/ } /*---------------------------------------- 系统初始化 ----------------------------------------*/ void timer1_init(void) { TCNT1H=0x00; TCNT1L=0x00; OCR1AH=0x01; OCR1AL=0x99; OCR1BH=0x02; OCR1BL=0x65; TIMSK1=0x00; TCCR1A=(1<<COM1A1)|(1<<COM1B1)|(1<<WGM10)|(1<<WGM11); TCCR1B=(1<<CS10); //不分频,否则波形较差 } void MCU_init(void) { DDRA=(1<<PA6)|(1<<PA5); MCUCR = 0x00; GIMSK = 0x00; timer1_init(); } /*---------------------------------------- 看门狗设置 ----------------------------------------*/ /*void WTCHDOG_init(void) //WTCHDOG: use the least frequency,about 2S { WDR(); WDTCSR=0x9f; WDTCSR=0x0f; }*/