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Fully interrupt driven soft-uart receiver
Starting values - overview
Starting values - 1st pulse
Starting values - 8th pulse
1st optimization attempt
1st optimization attempt - 1st pulse
1st optimization attempt - 8th pulse
Optimized ISR runtime - 1st pulse
Optimized sampling-ISR runtime
Optimized ISR runtime - 8th pulse
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Fully interrupt driven soft-uart receiver on an AT…
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Fully interrupt driven soft-uart receiver
By accident I stumbled across my 'system-ticker' interrupt today. As it happens it conveniently ticks at 1MHz! One tick of timer0 is one microsecond. Microsecond timing is exactly what is needed for receiving serial data.
The sampling interrupt (TIM0_COMPA_vect) is now invoked at the right time by setting OCR0A = TCNT0 + FULL_BIT_DELAY.
The sampling interrupt (TIM0_COMPA_vect) is now invoked at the right time by setting OCR0A = TCNT0 + FULL_BIT_DELAY.
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