Adding to the todo list and readme; fixing a bit of indentation.
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@ -66,7 +66,7 @@ void delayMicroseconds(unsigned int us)
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//delay_us(us);
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#if F_CPU >= 16000000L
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// for the 16 MHz clock on most Arduino boards
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// for the 16 MHz clock on most Arduino boards
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// for a one-microsecond delay, simply return. the overhead
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// of the function call yields a delay of approximately 1 1/8 us.
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@ -81,11 +81,11 @@ void delayMicroseconds(unsigned int us)
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// account for the time taken in the preceeding commands.
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us -= 2;
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#else
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// for the 8 MHz internal clock on the ATmega168
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// for the 8 MHz internal clock on the ATmega168
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// for a one- or two-microsecond delay, simply return. the overhead of
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// the function calls takes more than two microseconds. can't just
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// subtract two, since us is unsigned; we'd overflow.
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// for a one- or two-microsecond delay, simply return. the overhead of
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// the function calls takes more than two microseconds. can't just
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// subtract two, since us is unsigned; we'd overflow.
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if (--us == 0)
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return;
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if (--us == 0)
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@ -96,9 +96,9 @@ void delayMicroseconds(unsigned int us)
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// delay requested.
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us <<= 1;
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// partially compensate for the time taken by the preceeding commands.
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// we can't subtract any more than this or we'd overflow w/ small delays.
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us--;
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// partially compensate for the time taken by the preceeding commands.
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// we can't subtract any more than this or we'd overflow w/ small delays.
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us--;
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#endif
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// disable interrupts, otherwise the timer 0 overflow interrupt that
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