Pin.cpp

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#include "Cosa/Pin.hh"
#include "Cosa/OutputPin.hh"

uint8_t
Pin::read(OutputPin& clk, Direction order) const
{
  uint8_t value = 0;
  uint8_t bits = CHARBITS;
  if (order == MSB_FIRST) {
    do {
      value <<= 1;
      if (is_set()) value |= 0x01;
      clk.toggle();
      clk.toggle();
    } while (--bits);
  }
  else {
    do {
      value >>= 1;
      if (is_set()) value |= 0x80;
      clk.toggle();
      clk.toggle();
    } while (--bits);
  }
  return (value);
}