aduino控制2811下面的流水灯程序要怎样才能反过来跑？程序要改那里？
请高手们帮小弟一把～！
#include <Adafruit_NeoPixel.h>
#define PIN 6 //＃定義6 PIN
Adafruit_NeoPixel strip = Adafruit_NeoPixel(136, PIN, NEO_GRB + NEO_KHZ800); //整条灯长度
void setup() { //無效設置（）{
strip.begin();
strip.show(); // Initialize all pixels to 'off' strip.show（）; //初始化所有像素“關”
}
void loop() { //空隙環（）{
rainbowCycle(10);//5速度，越细越快
}
void rainbowCycle(uint8_t wait) //無效rainbowCycle（uint8_t有等待）{
{
uint16_t i,j;
for(j=0; j<256*5; j++)
{
for(i=0; i< strip.numPixels(); i++)
{
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
}
strip.show();
delay(wait); // 延遲（等待）;
}
}
uint32_t Wheel(byte WheelPos) {
if(WheelPos < 30)//拖尾长度
{
return strip.Color( WheelPos ,WheelPos , WheelPos ); //前跑馬灯颜色
}
else
{
return strip.Color( 0, 0, 0); //背景灯光颜色
}
}
strip.setPixelColor(strip.numPixels()-i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
改成这样试试看？ :D好的！我试试！
太感谢了！ zoologist 发表于 2016-2-22 16:51 static/image/common/back.gif
strip.setPixelColor(strip.numPixels()-i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
改成 ...
流水灯可以反跑了！太感谢了！
还发现还有一个问题，流水灯跑的时候，前面的灯暗渐变到后面的灯亮！
大神～～我要怎样才能反过来？
crbgz 发表于 2016-2-23 12:03 static/image/common/back.gif
流水灯可以反跑了！太感谢了！
还发现还有一个问题，流水灯跑的时候，前面的灯暗渐变到后面的灯亮！
...
呃你这个库我没用过
需要你自己琢磨一下了 zoologist 发表于 2016-2-23 12:29 static/image/common/back.gif
呃你这个库我没用过
需要你自己琢磨一下了
嗯！好的！太谢谢你了！ crbgz 发表于 2016-2-23 16:15 static/image/common/back.gif
嗯！好的！太谢谢你了！
大侠还是琢磨不出来～～～:'(
麻烦你再帮我看看～～～
/*--------------------------------------------------------------------
This file is part of the Adafruit NeoPixel library.
NeoPixel is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
NeoPixel is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with NeoPixel.If not, see
<http://www.gnu.org/licenses/>.
--------------------------------------------------------------------*/
#ifndef ADAFRUIT_NEOPIXEL_H
#define ADAFRUIT_NEOPIXEL_H
#if (ARDUINO >= 100)
#include <Arduino.h>
#else
#include <WProgram.h>
#include <pins_arduino.h>
#endif
// 'type' flags for LED pixels (third parameter to constructor):
#define NEO_RGB 0x00 // Wired for RGB data order
#define NEO_GRB 0x01 // Wired for GRB data order
#define NEO_BRG 0x04
#define NEO_COLMASK 0x01
#define NEO_KHZ8000x02 // 800 KHz datastream
#define NEO_SPDMASK 0x02
// Trinket flash space is tight, v1 NeoPixels aren't handled by default.
// Remove the ifndef/endif to add support -- but code will be bigger.
// Conversely, can comment out the #defines to save space on other MCUs.
#ifndef __AVR_ATtiny85__
#define NEO_KHZ4000x00 // 400 KHz datastream
#endif
class Adafruit_NeoPixel {
public:
// Constructor: number of LEDs, pin number, LED type
Adafruit_NeoPixel(uint16_t n, uint8_t p=6, uint8_t t=NEO_GRB + NEO_KHZ800);
~Adafruit_NeoPixel();
void
begin(void),
show(void),
setPin(uint8_t p),
setPixelColor(uint16_t n, uint8_t r, uint8_t g, uint8_t b),
setPixelColor(uint16_t n, uint32_t c),
setBrightness(uint8_t),
clear();
uint8_t
*getPixels(void) const,
getBrightness(void) const;
uint16_t
numPixels(void) const;
static uint32_t
Color(uint8_t r, uint8_t g, uint8_t b);
uint32_t
getPixelColor(uint16_t n) const;
inline bool
canShow(void) { return (micros() - endTime) >= 50L; }
private:
const uint16_t
numLEDs, // Number of RGB LEDs in strip
numBytes; // Size of 'pixels' buffer below
uint8_t
pin, // Output pin number
brightness,
*pixels, // Holds LED color values (3 bytes each)
rOffset, // Index of red byte within each 3-byte pixel
gOffset, // Index of green byte
bOffset; // Index of blue byte
const uint8_t
type; // Pixel flags (400 vs 800 KHz, RGB vs GRB color)
uint32_t
endTime; // Latch timing reference
#ifdef __AVR__
const volatile uint8_t
*port; // Output PORT register
uint8_t
pinMask; // Output PORT bitmask
#endif
};
#endif // ADAFRUIT_NEOPIXEL_H 楼主，你qq多少有事相求 zoologist 发表于 2016-2-23 12:29 static/image/common/back.gif
呃你这个库我没用过
需要你自己琢磨一下了
:dizzy:楼楼的程序为什么是无限跑，怎样改才能跑一次
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