PWM Driver functionality in Atmel Start

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Hi All


I've just completed assignement 2 from the following AVR tiny tutorial lecture sheet -

This tutorial uses the TCA driver to generate a PWM to an external in (PB0). The demo lecture works perfectly and I get a PWM generated signal to control my LED... my question is; if we are generating  a PWM signal, why doesn't the lecture use the PWM driver from the START.ATMEL library (its not used anywhere)....


What does the PWM driver library do for me (and how would I go about using it if it does have any benefits)?


Many thanks in advance