kowala's home: Arduino LCD12864 ST7920 parallel test...

這是 LCD12864 ST7920 並行測試，從官網下載一個範例程式，然後修改了一小部分程式碼，來方便理解其運作，自己加上了一個 VR，修改顯示字串等等。

線路配置(並行)

RS = 17; Analog Pin3
RW = 16; Analog Pin2
EN = 18; Analog Pin4
D0 = 8;
D1 = 9;
D2 = 10;
D3 = 11;
D4 = 4;
D5 = 5;
D6 = 6;
D7 = 7;
PIN15 PSB = 5V;(並行)

VR (3k) 配置
+ 5v
Analog Pin1
GND

官方12864網頁
http://playground.arduino.cc/Code/LCD12864

使用 Lib
LCD12864
http://playground.arduino.cc/uploads/Code/LCD12864.zip

官方原始碼
http://playground.arduino.cc/uploads/Code/pongLCD.zip

參考原始碼

//http://playground.arduino.cc/Code/LCD12864
#include <LCD12864.h>
int score = 0;//分數
boolean lost = false;//遊戲結束
int relive = 0;//復活讀秒
int top=128,down=159,left=0,right=63;
int Xpos = 0;//球座標 x
int Ypos = 133;//球座標 y
int momentumX = 2;//x增量
int momentumY = 1;//y增量
boolean momr = true;//球向右(x)
boolean momd = true;//球向下(y)
int PaddlePos = 139;// 130<PaddlePos<148 (128<y<160)
void setup() {
    LCDA.Initialise(); // INIT SCREEN
    delay(500); // Some delay
    LCDA.Render(); // Start the Rendering process
    Title(); // 畫 ASCII 字元
    delay(500); // Some Delay
}
void loop(){
    int tmp;
    tmp = analogRead(1);// 讀取VR值 0-1023
    PaddlePos = map(tmp,0,1023,129,149);// 把 0-1023 值轉為 130-148
    run();
}
void AI(){// BALL MOVEMENT　球移動
    //left=0,right=63
    if (Xpos+momentumX < right && momr == true) {
        Xpos+=momentumX;//x->
    }else if (Xpos+momentumX >= right && momr == true) {
        Xpos-=momentumX;//x->反彈
        momr = false;//<-x
    }else if (Xpos-momentumX > left && momr == false){
        Xpos-=momentumX;//<-x
    }else if (Xpos-momentumX <= left && momr == false){//反彈<-x
        if (Ypos+1 >= PaddlePos && Ypos < PaddlePos+10) {//擊中
            Xpos+=momentumX;//反彈||<-x
            momr = true;//x->
            scored();//計分
            //　變化球,棒子兩端+-3
            if (Ypos < PaddlePos+3 || Ypos-1 > PaddlePos+7) {
                if (momentumY < 4) momentumY +=2;
            }else{
                if (momentumY > 1) momentumY -=1;
            }
        }else{//　沒擊中
            lost = true;
        }
    }
    //top=128,down=159
    if (Ypos+momentumY < down && momd == true) {//向下
        Ypos+=momentumY;
    }else if (Ypos+momentumY >= down && momd == true) {//向下反彈
        Ypos-=momentumY;
        momd = false;
    }else if (Ypos-momentumY > top && momd == false){//向上
        Ypos-=momentumY;
    }else if (Ypos-momentumY <= top && momd == false){//向上反彈
        Ypos+=momentumY;
        momd = true;
    }
}
void run() {//循環
    if (lost == false) {
        AI();
        LCDA.DumpScreenBuffer(0,0,8,32);//清空記憶體資料(X,Y,maxX,maxY)
        // Draw Room (x,y,w,h),畫框(0<=X<=63),(128<=Y<=159)
        //top=128,down=159,left=0,right=63
        LCDA.FillRectangle(left,top,right,1);
        LCDA.FillRectangle(right,top,1,32);//60,128
        LCDA.FillRectangle(left,down,right,1);//0,158
        // Draw Ball 畫球
        LCDA.FillRectangle(Xpos,Ypos,2,2);// 2*3　球
        // Draw Paddle 畫板子
        LCDA.FillRectangle(1,PaddlePos,2,10);// 2*10　板子
        LCDA.RenderScreenBuffer(0,0,8,32);//送出記憶體資料
    }else{
        relive++;
        if(relive>3000){//復活讀秒=3秒
            lost = false;
            relive=0;
            score=0;
        }
    }
}
// 秀數字
void numbertobinary(char num) { //RS=1,RW=0,寫資料到內部 RAM (RS,RW,D7,D6,D5,D4,D3,D2,D1,D0)
    if (num == 0)         LCDA.setPins(1,0,0,0,1,1,0,0,0,0); //30h=48=0
    else if (num == 1)    LCDA.setPins(1,0,0,0,1,1,0,0,0,1); //31h=49=1
    else if (num == 2)    LCDA.setPins(1,0,0,0,1,1,0,0,1,0); //32h=50=2
    else if (num == 3)    LCDA.setPins(1,0,0,0,1,1,0,0,1,1); //33h=51=3
    else if (num == 4)    LCDA.setPins(1,0,0,0,1,1,0,1,0,0); //34h=52=4
    else if (num == 5)    LCDA.setPins(1,0,0,0,1,1,0,1,0,1); //35h=53=5
    else if (num == 6)    LCDA.setPins(1,0,0,0,1,1,0,1,1,0); //36h=54=6
    else if (num == 7)    LCDA.setPins(1,0,0,0,1,1,0,1,1,1); //37h=55=7
    else if (num == 8)    LCDA.setPins(1,0,0,0,1,1,1,0,0,0); //38h=56=8
    else if (num == 9)    LCDA.setPins(1,0,0,0,1,1,1,0,0,1); //39h=57=9
}
void Title() { // 秀 ASCII 字元
    LCDA.Draw(false,25,0);//(sw,x,?)
    delay(1);
    byte title[] = {
        0,1,1,0,1,0,1,1,//0x6b=k
        0,1,1,0,1,1,1,1,//0x6f=o
        0,1,1,1,0,1,1,1,//0x77=w
        0,1,1,0,0,0,0,1,//0x61=a
        0,1,1,0,1,1,0,0,//0x6f=l
        0,1,1,0,0,0,0,1,//0x61=a
        0,0,1,0,0,1,1,1,//0x27='
        0,1,1,1,0,0,1,1,//0x73=s
        0,0,1,0,0,0,0,0,//0x20=
        0,1,1,0,1,0,0,0,//0x68=h
        0,1,1,0,1,1,1,1,//0x6f=o
        0,1,1,0,1,1,0,1,//0x6d=m
        0,1,1,0,0,1,0,1 //0x65=e
    };
    int count = 0;
    int counter = 0;
    while (count < sizeof(title)/sizeof(byte)) {
        for (int i = count; i < count+8; i++) {
            LCDA.temp[counter] = title[i];
            counter++;
        }
        LCDA.setPins(1,0,
            LCDA.temp[0],LCDA.temp[1],LCDA.temp[2],LCDA.temp[3],
            LCDA.temp[4],LCDA.temp[5],LCDA.temp[6],LCDA.temp[7]);
        count += 8;
        counter = 0;
    }
    LCDA.Draw(true,0,0);
}
void scored() { //　計分+1
    LCDA.Draw(false,12,20);
    delay(1);
    score++;
    momentumX = random(3, 6);
    if (score < 10) {
        numbertobinary('0');
        numbertobinary('0');
        numbertobinary(score);
    }else if (score < 100) {
        int res = score/10;
        int lef = score%10;
        numbertobinary('0');
        numbertobinary(res);
        numbertobinary(lef);
    }else if (score < 1000) {
        int res = score/100;
        int lef = score%100;
        int res2 = lef/10;
        int lef2 = lef%10;
        numbertobinary(res);
        numbertobinary(res2);
        numbertobinary(lef2);
    }
    LCDA.Draw(true,0,0);
}

補充說明

void Title() { // 秀 ASCII 字元
LCDA.Draw(false,25,0);//(sw,x,?)

在文字顯示中，X座標指定，是從左上角，由0開始，分成四行，一直到右下角為止，如下表所示。

ASCII 字碼輸入

LCDA.setPins(1,0,0,0,1,1,0,0,0,0); //30h=48=0

setPins() 的位元如下

(RS,RW,D7,D6,D5,D4,D3,D2,D1,D0)

RS=1,RW=0,時，為寫資料到內部 DRAM，D0-D7 為 ASCII Code，請參考下表