Adafruit_NeoPixel常⽤库函数详解初始化 包含头⽂件
#include<Adafruit_NeoPixel.h>
针对AVR单⽚机的特殊设置
#ifdef __AVR__
#include<avr/power.h>// Required for 16 MHz Adafruit Trinket
水产之书
#endif
// These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
// Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
clock_prescale_set(clock_div_1);
#endif
// Which pin on the Arduino is connected to the NeoPixels?
#define PIN 14// On Trinket or Gemma, suggest changing this to 1
#define NUMPIXELS 3 // Popular NeoPixel ring size
定义strip函数
Adafruit_NeoPixel strip(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
初始化strip函数
strip.begin();// INITIALIZE NeoPixel strip object (REQUIRED)
strip.show();
颜⾊设置
将颜⾊的R、G、B设置为0
strip.clear();
RGB设置函数
static uint32_t Adafruit_NeoPixel::Color(uint8_t r,uint8_t g,uint8_t b)
static uint32_t Adafruit_NeoPixel::Color(uint8_t r,uint8_t g,uint8_t b,uint8_t w)
static uint32_t Adafruit_CPlay_NeoPixel::Color(uint8_t r,uint8_t g,uint8_t b)
static uint32_t Adafruit_CPlay_NeoPixel::Color(uint8_t r,uint8_t g,uint8_t b,uint8_t w)
void Adafruit_CPlay_NeoPixel::setPixelColor(uint16_t n,uint8_t r,uint8_t g,uint8_t b)
void Adafruit_CPlay_NeoPixel::setPixelColor(uint16_t n,uint8_t r,uint8_t g,uint8_t b,uint8_t w)
void Adafruit_CPlay_NeoPixel::setPixelColor(uint16_t n,uint32_t c)
void Adafruit_CircuitPlayground::setPixelColor(uint8_t p,uint32_t c)
void Adafruit_CircuitPlayground::setPixelColor(uint8_t p,uint8_t r,uint8_t g,uint8_t b)
void Adafruit_NeoPixel::setPixelColor(uint16_t n,uint8_t r,uint8_t g,uint8_t b)
void Adafruit_NeoPixel::setPixelColor(uint16_t n,uint8_t r,uint8_t g,uint8_t b,uint8_t w)
void Adafruit_NeoPixel::setPixelColor(uint16_t n,uint32_t c)
备注：n是引脚标号，从0开始。w是亮度，0~255
⽰例⼀
// NeoPixel Ring simple sketch (c) 2013 Shae Erisson
// Released under the GPLv3 license to match the rest of the
// Adafruit NeoPixel library
#include<Adafruit_NeoPixel.h>
#ifdef __AVR__
#include<avr/power.h>// Required for 16 MHz Adafruit Trinket
#endif
// These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
// Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
clock_prescale_set(clock_div_1);
#endif
// Which pin on the Arduino is connected to the NeoPixels?
#define PIN 14// On Trinket or Gemma, suggest changing this to 1
#define NUMPIXELS 3 // Popular NeoPixel ring size
Adafruit_NeoPixel strip(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
#define DELAYVAL 500 // Time (in milliseconds) to pause between pixels
uint8_t colorR =0,colorG =0,colorB =255;
uint8_t colorW;
void setup(){
// END of Trinket-specific code.
strip.begin();// INITIALIZE NeoPixel strip object (REQUIRED)
strip.show();// Turn OFF all pixels ASAP
}
void loop()
{
for(int i=0; i<strip.numPixels(); i++){//For each pixel
strip.setPixelColor(i, strip.Color(colorR,colorG,colorB));//Set pixel's color (in RAM) strip.show();//Update strip to match
delay(0);//Pause for a moment
}
delay(2000);
strip.clear();
strip.show();
delay(2000);
}
亮度设置
void Adafruit_CPlay_NeoPixel::setBrightness(uint8_t b)
void Adafruit_CircuitPlayground::setBrightness(uint16_t b)
void Adafruit_NeoPixel::setBrightness(uint8_t b)
使⽤完这个函数之后需要调⽤show函数，才能输出
⽰例⼆
// NeoPixel Ring simple sketch (c) 2013 Shae Erisson
// Released under the GPLv3 license to match the rest of the
// Adafruit NeoPixel library
#include<Adafruit_NeoPixel.h>
#ifdef __AVR__
#include<avr/power.h>// Required for 16 MHz Adafruit Trinket
#endif
// These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
// Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
clock_prescale_set(clock_div_1);
#endif
// Which pin on the Arduino is connected to the NeoPixels?
#define PIN 14// On Trinket or Gemma, suggest changing this to 1
#define NUMPIXELS 3 // Popular NeoPixel ring size
Adafruit_NeoPixel strip(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
#define DELAYVAL 500 // Time (in milliseconds) to pause between pixels
uint8_t colorR =0,colorG =0,colorB =255;
uint8_t colorW;
void setup(){
// END of Trinket-specific code.
strip.begin();// INITIALIZE NeoPixel strip object (REQUIRED)
strip.show();// Turn OFF all pixels ASAP
}
void loop()
{
strip.setBrightness(255);
for(int i=0; i<strip.numPixels(); i++){//For each pixel
strip.setPixelColor(i, strip.Color(colorR,colorG,colorB));//Set pixel's color (in RAM) strip.show();//Update strip to match
delay(0);//Pause for a moment
}
delay(2000);
汉语语音strip.setBrightness(10);
strip.show();
斯特林冲锋delay(2000);
}
库函数⽰例
// A basic everyday NeoPixel strip test program.
// NEOPIXEL BEST PRACTICES for most reliable operation:
// - Add 1000 uF CAPACITOR between NeoPixel strip's + and - connections.
// - MINIMIZE WIRING LENGTH between microcontroller board and first pixel.
// - NeoPixel strip's DATA-IN should pass through a 300-500 OHM RESISTOR.
// - AVOID connecting NeoPixels on a LIVE CIRCUIT. If you must, ALWAYS
// connect GROUND (-) first, then +, then data.
// - When using a 3.3V microcontroller with a 5V-powered NeoPixel strip,
// a LOGIC-LEVEL CONVERTER on the data line is STRONGLY RECOMMENDED.
// (Skipping these may work OK on your workbench but can fail in the field)
// (Skipping these may work OK on your workbench but can fail in the field)
#include<Adafruit_NeoPixel.h>
#ifdef __AVR__
#include<avr/power.h>// Required for 16 MHz Adafruit Trinket
#endif
// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1:
#define LED_PIN 6
// How many NeoPixels are attached to the Arduino?
#define LED_COUNT 60
// Declare our NeoPixel strip object:
Adafruit_NeoPixel strip(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
// Argument 1 = Number of pixels in NeoPixel strip
// Argument 2 = Arduino pin number (most are valid)
/
/ Argument 3 = Pixel type flags, add together as needed:
// NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs) // NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers) // NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)
// NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
// NEO_RGBW Pixels are wired for RGBW bitstream (NeoPixel RGBW products) // setup() function -- runs once at startup --------------------------------
void setup(){
// These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
// Any other board, you can remove this part (but no harm leaving it):
#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
clock_prescale_set(clock_div_1);
#endif
// END of Trinket-specific code.
strip.begin();// INITIALIZE NeoPixel strip object (REQUIRED)
大氮肥strip.show();// Turn OFF all pixels ASAP
strip.setBrightness(50);// Set BRIGHTNESS to about 1/5 (max = 255)
}
// loop() function -- runs repeatedly as long as board is on ---------------
void loop(){
// Fill along the length of the strip in
colorWipe(strip.Color(255,0,0),50);// Red
colorWipe(strip.Color(0,255,0),50);// Green
colorWipe(strip.Color(0,0,255),50);// Blue
// Do a theater marquee effect in
theaterChase(strip.Color(127,127,127),50);// White, half brightness theaterChase(strip.Color(127,0,0),50);// Red, half brightness theaterChase(strip.Color(0,0,127),50);// Blue, half brightness
rainbow(10);// Flowing rainbow cycle along the whole strip theaterChaseRainbow(50);// Rainbow-enhanced theaterChase variant
}
// Some functions of our own for creating animated effects -----------------
// Fill strip pixels one after another with a color. Strip is NOT cleared
// first; anything there will be covered pixel by pixel. Pass in color
// (as a single 'packed' 32-bit value, which you can get by calling
/
/ strip.Color(red, green, blue) as shown in the loop() function above),
// strip.Color(red, green, blue) as shown in the loop() function above),
// and a delay time (in milliseconds) between pixels.
void colorWipe(uint32_t color,int wait){
for(int i=0; i<strip.numPixels(); i++){// For each pixel
strip.setPixelColor(i, color);// Set pixel's color (in RAM)
strip.show();// Update strip to match
delay(wait);// Pause for a moment
}
腺鼠疫
}世界上最低的盆地
// Theater-marquee-style chasing lights. Pass in a color (32-bit value,
/
/ a la strip.Color(r,g,b) as mentioned above), and a delay time (in ms)
// between frames.
void theaterChase(uint32_t color,int wait){
for(int a=0; a<10; a++){// Repeat
for(int b=0; b<3; b++){// 'b' counts from 0
strip.clear();// Set all pixels in RAM to 0 (off)
// 'c' counts up from 'b' to end of strip in steps
for(int c=b; c<strip.numPixels(); c +=3){
strip.setPixelColor(c, color);// Set pixel 'c' to value 'color'
}
strip.show();// Update strip with new contents
delay(wait);// Pause for a moment
}
}
}
// Rainbow cycle along whole strip. Pass delay time (in ms) between frames. void rainbow(int wait){
// Hue of first pixel runs 5 complete loops through the color wheel.
// Color wheel has a range of 65536 but it's OK if we roll over, so
// just count from 0 to 5*65536. Adding 256 to firstPixelHue each time
// means we'll make 5*65536/256 = 1280 passes through this outer loop:
for(long firstPixelHue =0; firstPixelHue <5*65536; firstPixelHue +=256){
for(int i=0; i<strip.numPixels(); i++){// For each pixel
/
/ Offset pixel hue by an amount to make one full revolution of the
// color wheel (range of 65536) along the length of the strip
// (strip.numPixels() steps):
int pixelHue = firstPixelHue +(i *65536L/ strip.numPixels());
// strip.ColorHSV() can take 1 or 3 arguments: a hue (0 to 65535) or
// optionally add saturation and value (brightness) (each 0 to 255).
// Here we're using just the single-argument hue variant. The result
// is passed through strip.gamma32() to provide 'truer' colors
// before assigning to each pixel:
strip.setPixelColor(i, strip.gamma32(strip.ColorHSV(pixelHue)));
}
strip.show();// Update strip with new contents
delay(wait);// Pause for a moment
}
}
// Rainbow-enhanced theater marquee. Pass delay time (in ms) between frames. void theaterChaseRainbow(int wait){
int firstPixelHue =0;// First pixel starts at red (hue 0)
for(int a=0; a<30; a++){// Repeat
for(int b=0; b<3; b++){// 'b' counts from 0
strip.clear();// Set all pixels in RAM to 0 (off)
// 'c' counts up from 'b' to end of strip in increments
for(int c=b; c<strip.numPixels(); c +=3){
// hue of pixel 'c' is offset by an amount to make one full
// revolution of the color wheel (range 65536) along the length
// of the strip (strip.numPixels() steps):
int hue = firstPixelHue + c *65536L/ strip.numPixels();
uint32_t color = strip.gamma32(strip.ColorHSV(hue));// hue -> RGB
strip.setPixelColor(c, color);// Set pixel 'c' to value 'color'
}
豫公网安备41160202000603
站长QQ:729038198
关于我们
投诉建议