pwm程序实例.rar

#include <avr/io.h> #include <avr/interrupt.h> #include <avr/signal.h> void int1_init() { DDRD&=0x0f; PORTD|=0xf8; MCUCR|=(1<<ISC11);//上升沿触发 MCUCR|=(1<<ISC10); GIFR|=(1<<INTF1); GICR|=(1<<INT1); //int1开中断 } void pwm_init() { DDRB|=0b00000110; TCCR1A|=0b10100010; TCCR1B|=0b00011001; ICR1=0x7ff; OCR1A=0x7ff; OCR1B=0x400; } void main() { int1_init(); pwm_init(); sei(); } INTERRUPT(SIG_INTERRUPT1) { OCR1A+=10; }