Question

ARDUINO UNO R3请教。

用2个轻触开关控制2个led灯的亮灭，一个开关控制1个led灯；要按一下亮在按一下灭。多谢

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Answer 1

连线图呢？？？

追问

追答

#define LED_A 3
#define LED_B 4
#define KEY_A 11
#define KEY_B 12

static uint8_t keyA_Cnt,keyB_Cnt;

void setup()
{
pinMode(LED_A, OUTPUT);
pinMode(LED_B, OUTPUT);
pinMode(KEY_A, INPUT);
pinMode(KEY_B, INPUT);
}

void loop()
{
// A
if (digitalRead(KEY_A))
{
(keyA_Cnt= 100)
{
digitalWrite(LED_A, !digitalRead(LED_A));
}
keyA_Cnt = 0;
}
// B
if (digitalRead(KEY_B))
{
(keyB_Cnt= 100)
{
digitalWrite(LED_B, !digitalRead(LED_B));
}
keyB_Cnt = 0;
}
// Delay ...
delay(1);
}