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Nobutarou avatar Nobutarou commented on September 26, 2024

確認したい

  int portb;
  // 1, PORTB5 を1桁目に持ってくる
  // portb = PORTB >> PORTB5 ;
 
  // 2, PORTB5 の値が分かる
  // portb = portb & 1;
  // 1, 2 をまとめると
  // portb =(PORTB >> PORTB5) & 1;

  // 3, PORTB5 の値をひっくり返す
  // ^ は xor で、1^1=0, 0^1=1 なのでひっくり返る
  // portb = portb ^ 1;
  // 1, 2, 3 をまとめて
  //portb =((PORTB >> PORTB5) & 1)^1;

反転したい

  // 反転させたいビットのみ 1
  PORTB^=0b00100000;

// ビット名使うなら
  PORTB^=(1<<PORTB5);

from arduinodeasobu.

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