Question

我正在尝试使用neoPixel和atm 8 LED灯条（之后会更长）来闪烁颜色。我要做的是给出一个像素信息列表并循环遍历列表并将灯光闪烁为“脚本数组”。说。

这是我到目前为止所做的代码：

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif

#define PIN 6

Adafruit_NeoPixel strip = Adafruit_NeoPixel(8, PIN, NEO_GRB + NEO_KHZ800);

void setup() {

  strip.begin();
  strip.show();
  int array[2][8][3] = {
    {{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40}},
    {{50, 90, 200}, {50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200}}
  }; // flashing two colors on all leds
}

void loop() {
  fromArray(50);
}

void fromArray(uint8_t wait){
  for(int i=0; i<2; i++){
    for (int j=0; j<8; j++){
      strip.setPixelColor(j, strip.Color(array[i][j][0],array[i][j][1],array[i][j][2]))
    }
    strip.show();
    delay(wait)
  } 
}

当我检查此代码时，我从第'array' was not declared in this scope行收到错误strip.setPixelColor(j, strip.Color(array[i][j][0],array[i][j][1],array[i][j][2]))。

Answer 1

您的array变量在setup函数内声明，仅在此函数中可用。您只需将array的声明移到全局范围内（setup函数之外。

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif

#define PIN 6

Adafruit_NeoPixel strip = Adafruit_NeoPixel(8, PIN, NEO_GRB + NEO_KHZ800);

int array[2][8][3] = {
    {{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40}},
    {{50, 90, 200}, {50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200}}
  }; // flashing two colors on all leds

void setup() {

  strip.begin();
  strip.show();
}

void loop() {
  fromArray(50);
}

void fromArray(uint8_t wait){
  for(int i=0; i<2; i++){
    for (int j=0; j<8; j++){
      strip.setPixelColor(j, strip.Color(array[i][j][0],array[i][j][1],array[i][j][2]));
    }
    strip.show();
    delay(wait);
  } 
}

您在我的fromArray函数中遗漏了一些分号。我已在我的版本中添加了这些分号。

Answer 2

您收到此错误的原因是您的setup()函数中声明了数组，并且其余代码不可见。

你应该将它移到顶部。

int array[2][8][3] = {
    {{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40},{120, 100, 40}},
    {{50, 90, 200}, {50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200},{50, 90, 200}}
  }; // flashing two colors on all leds

void setup() {

  strip.begin();
  strip.show();

}

void loop() {
  fromArray(50);
}

Arduino Uno阵列失败

2 个答案: