C_and_CPP / lhz135 / 20191222
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#include <stdio.h>
#define MASK(LEN) ((1<<(LEN)) - 1)
#define LROTATE_4(BITS) (((((BITS) << 1) | ((BITS) >> 3))) & MASK(4))
int main(void) {
const unsigned Bits = 0b0011;
const int Start = 8;
const int NumStep = 4;
const int NumRound = 4;
for (int Round = NumRound, Signal = Bits; Round > 0;
--Round, Signal = LROTATE_4(Signal)) {
int FirstArg = Start;
int SecondArg = Signal;
int Step = NumStep;
for (; Step > 0; --Step, ++FirstArg, SecondArg >>= 1) {
printf("digitalWrite(%d, %d)\n", FirstArg, SecondArg & 1);
}
printf("delay(t)\n\n");
}
return 0;
}
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