Digispark chap2.通訊應用-3.1 IR紅外線遙控器控制RGB LED WS2811 WS2812

既然在上一章中我們有讀取到遙控器每個按鍵的碼，那我們就利用這個碼來控制RGB LED
其實在遙控器的按鍵中，有兩種模式，1.按一次發射一次2.連續發送，比方說上下左右的按鍵，通常都會連續發射，而其他的功能鍵，一般按一次只會發射一次
我們本次要利用按鍵來做RGB三個顏色的個別調光，上下來調整紅光，左右調整綠光、keystone+-兩顆按鍵調整藍光






相關接線方式：



程式範例：

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#include <SoftSerial.h>
#include <WS2811.h>

DEFINE_WS2811_FN(WS2811RGB, PORTB, 3)
//設定PIN3控制RGB LED
RGB_t rgb[8]; //1 for 1 pixel
int RGB_NUM;

uint8_t situation = 0;
uint8_t START = 0;
uint8_t x = 0;
uint8_t BIT = 0;
uint8_t Id = 0;
uint8_t Id_inv = 0;
uint8_t Data = 0;
uint8_t Data_back = 0;
uint8_t Data_inv = 0;
uint8_t Repeat = 0;
uint8_t sended = 0;

uint16_t Time_old = 0;
uint16_t Time = 0;
uint16_t TimeDelta = 0;

SoftSerial Serialport(5, 0 );      //設定Rx/Tx對應的PIN
unsigned char Serialdata[32],Serial_DATA;
int Serial_num;


void setup(void) {
  attachInterrupt(0, IR_Read, FALLING);
  pinMode(1,OUTPUT);
  digitalWrite(1,LOW);

 pinMode(3,OUTPUT);  //for WS2811 RGB LED

  Serialport.begin(9600);
  Serialport.write("SoftSerial Test \r\n");

   rgb[0].r-=15;
}

void loop(void) {
  if(sended == 1) {

    Serialport.write("IR data:");  //傳送字串
    Char_to_Uart((unsigned char)Id);
    Serialport.write(",");  //傳送字串
    Char_to_Uart((unsigned char)Id_inv);
    Serialport.write(",");  //傳送字串
    Char_to_Uart((unsigned char)Data_back);
    Serialport.write(",");  //傳送字串
    Char_to_Uart((unsigned char)Data_inv);
    Serialport.write(",\r\n");  //傳送字串
 
    if((uint8_t) Data_back==33){  rgb[0].r=0;  rgb[0].b=0;   rgb[0].g=0; }
    if((uint8_t) Data_back==65 &&  rgb[0].r<100)  rgb[0].r+=2;
    if((uint8_t) Data_back==161 &&  rgb[0].r>0)  rgb[0].r-=2;
 
    if((uint8_t) Data_back==129 &&  rgb[0].g<100)  rgb[0].g+=2;
    if((uint8_t) Data_back==19 &&  rgb[0].g>0)  rgb[0].g-=2;
 
    if((uint8_t) Data_back==97 &&  rgb[0].b<100)  rgb[0].b+=2;
    if((uint8_t) Data_back==81 &&  rgb[0].b>0)  rgb[0].b-=2;
 
    sended = 0;
  } else {

  }


 updatePixels(); //show the change
  delay(20);
}

void updatePixels(){
  WS2811RGB(rgb, ARRAYLEN(rgb));
}

void IR_Read(void) {
  digitalWrite(1,HIGH);
  Time = micros();
  if (Time_old != 0) {
    TimeDelta = Time - Time_old;
    if ((TimeDelta > 12000)&&(TimeDelta < 14000)) {
      START = 1;
      x = 0;
      situation = 1;
      Id = 0;
      Id_inv = 0;
      Data = 0;
      Data_inv = 0;
    } else if ((TimeDelta > 10000)&&(TimeDelta < 12000)) {
      situation = 2; // repeat
    } else if ((TimeDelta > 1500)&&(TimeDelta < 2500)) {
      situation = 3; //"1"
      BIT = 1;
    } else if ((TimeDelta > 1000)&&(TimeDelta < 1500)) {
      situation = 3; //"0"
      BIT = 0;
    } else situation = 5;
 
    if (situation == 3) {
      if (x < 8) {
        Id |= BIT;
        if (x < 7) Id <<= 1;
        x++;
      } else if (x < 16) {
        Id_inv |= BIT;
        if (x < 15) Id_inv <<= 1;
        x++;
      } else if (x < 24) {
        Data |= BIT;
        if (x < 23) Data <<= 1;
        x++;
      } else if (x < 32) {
        Data_inv |= BIT;
        if (x < 31) {
          Data_inv <<= 1;
        } else { 
          /* DO SOMETHING HERE */
          sended = 1;
       
          Data_back = Data;
          Repeat = 0;
        }
        x++;
      }
    } else if (situation == 2) {
      if(Repeat == 1) {     
        /* DO SOMETHING HERE */
        /*sended = 1;*/
      } else {
        Repeat = 1;
      }
    }
  }
  Time_old = Time;
  digitalWrite(1,LOW);
}

void Char_to_Uart(unsigned char ChartoUart_NUM) {
unsigned char ChartoUart_TEMP;

ChartoUart_TEMP=ChartoUart_NUM/100;
Serialport.write(ChartoUart_TEMP+'0');
ChartoUart_NUM=ChartoUart_NUM-(ChartoUart_TEMP*100);
 
ChartoUart_TEMP=ChartoUart_NUM/10;
Serialport.write(ChartoUart_TEMP+'0');
ChartoUart_NUM=ChartoUart_NUM-(ChartoUart_TEMP*10);
 
ChartoUart_TEMP=ChartoUart_NUM;
Serialport.write(ChartoUart_TEMP+'0');
}

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