51单片机流水灯循环

Question

系统上电后，按照D8~D1的顺序循环点亮每一个LED灯;当K1按下时，控制2个LED灯为一组交替点亮并循环(1D2，灯3 D4，D5 D6，D7D8);当K2按下时，控制流水灯在全亮和全熄灭之间循环;当任何按键松开时，恢复循环初始状态

Answer 1

#include <stdio.h>
#include <stdbool.h>
#include <wiringPi.h>

#define K1_PIN  0
#define K2_PIN  1
#define D1_PIN  2
#define D2_PIN  3
#define D3_PIN  4
#define D4_PIN  5
#define D5_PIN  6
#define D6_PIN  7
#define D7_PIN  8
#define D8_PIN  9

void setup()
{
    wiringPiSetup();
    pinMode(K1_PIN, INPUT);
    pinMode(K2_PIN, INPUT);
    pinMode(D1_PIN, OUTPUT);
    pinMode(D2_PIN, OUTPUT);
    pinMode(D3_PIN, OUTPUT);
    pinMode(D4_PIN, OUTPUT);
    pinMode(D5_PIN, OUTPUT);
    pinMode(D6_PIN, OUTPUT);
    pinMode(D7_PIN, OUTPUT);
    pinMode(D8_PIN, OUTPUT);
}

void turnOnLEDs(bool led1_status, bool led2_status, bool led3_status, bool led4_status)
{
    digitalWrite(D1_PIN, led1_status);
    digitalWrite(D2_PIN, led2_status);
    digitalWrite(D3_PIN, led3_status);
    digitalWrite(D4_PIN, led4_status);
}

void cycleLEDs()
{
    for (int i = 0; i < 8; i++)
    {
        int led_index = i + 1;
        bool led_status = true;
        turnOnLEDs(led_index == 1, led_index == 2, led_index == 3, led_index == 4);
        delay(500);  // 点亮每个LED的时间间隔为500ms
    }
}

void alternateLEDs()
{
    int led_group = 1;
    while (digitalRead(K1_PIN) == 0)  // 按下K1时持续循环
    {
        if (led_group == 1)
        {
            turnOnLEDs(false, false, true, true);  // 点亮D5和D6
            led_group = 2;
        }
        else if (led_group == 2)
        {
            turnOnLEDs(true, true, false, false);  // 点亮D7和D8
            led_group = 1;
        }
        delay(500);  // 点亮每个组的LED的时间间隔为500ms
    }
}

void cycleLights()
{
    bool lights_on = true;
    while (digitalRead(K2_PIN) == 0)  // 按下K2时持续循环
    {
        turnOnLEDs(lights_on, lights_on, lights_on, lights_on);  // 全亮或全熄灭
        lights_on = !lights_on;
        delay(500);  // 变化的时间间隔为500ms
    }
}

int main()
{
    setup();

    while (true)
    {
        bool k1_state = digitalRead(K1_PIN);
        bool k2_state = digitalRead(K2_PIN);

        if (k1_state == 0)
        {
            alternateLEDs();
        }
        else if (k2_state == 0)
        {
            cycleLights();
        }
        else
        {
            cycleLEDs();
        }

        turnOnLEDs(false, false, false, false);  // 恢复循环初始状态
    }

    return 0;
}