PWM.zip_atmega328 fast pwm

#include <iom16v.h> #include <macros.h> #include <math.h> #define uint unsigned int #define uchar unsigned char #define k 50.0 void delay(uint ms) { uint x,y; for(x=ms;x>0;x--) for(y=1141;y>0;y--); } float LtoP(float bright) { float LtoPtemp,LtoPout; LtoPtemp=pow(k+1,bright); LtoPout=(1/k)*(LtoPtemp-1); return LtoPout; } void main(void) { uint i; DDRA=0xff; PORTA=0xff; DDRD|=BIT(4)|BIT(5); TCCR1A=0x73; TCCR1B=0x19; OCR1A=7999; OCR1B=6000; SREG|=BIT(7); while(1) { for(i=0;i<10;i++) { OCR1B=7999*LtoP(i/10.0); delay(1000); } } }