Abbreviations:
PWM - pulse width modulation
WGM - waveform generation mode
TCCR -
COM - compare output mode
CS - clock select mode
OCR - output compare register, continuously compare with counter value (TCNT0), match -> interrupt, or generate waveform of OC0
Fast PWM mode:
We will set WGM00 and WGM01 to 1 to enable "Fast PWM" mode.
TCCR0A |= (1<<WGM00)|(1<<WGM01)|
1st Using Delay to Create PWM:
2nd Using Wave Generator in MCU:
