I have been delving (groping blindfold, more accurately) into the Arduino compiler adaptation code to try to determine how it handles the switch-over between its pwm activities, its set-I/O-to-output activities, its set-output-high (or low) activities, and any user pwm or I/O activities. For example, when manually setting a port pin to pwm, what information does …
This story continues at An Arduino timer question
Or just coverage at Electronics Weekly // Read more: original article.