functions

8x8x8.c

@@ -0,0 +1,154 @@
+/*
+* Low level code for cube led 8x8x8
+* By Gnieark https://blog-du-grouik.tinad.fr February 2016
+* GNU GPL V2
+*/
+
+#define pinOE 11
+boolean cube[8][8][8];
+
+const int layersPins[]={A0,A1,A2,A3,A4,A5,12,13};
+const int busPins[]={0,1,2,3,4,5,6,7};
+
+// IC Pins are "hard coded". here just for info,
+const int ICPins[]={8,9,10}; 
+//  If you change IC pin configuration, 
+//  You'll have to modify const ICtable[9]
+
+//see SN74HC138 specs 
+//http://www.ti.com/lit/ds/symlink/sn54hc138.pdf page 2
+const byte ICtable[9]={
+ B00000000,
+ B00000001,
+ B00000010,
+ B11000011,
+ B00000100,
+ B00000101,
+ B00000110,
+ B00000111,
+ B00000000 //une façon de boucler sur 0
+};
+
+/*
+void selectIC(int outputPin){
+   
+    //for (int i=0; i<3; i++){
+    //    digitalWrite(ICPins[i], ICtable[outputPin][i]);
+    //}
+    
+    PORTB=ICtable[outputPin];
+}
+*/
+void writeCube(int tdelay){
+   static int currentLayer=0;
+   unsigned long startedAt = millis();
+    while(millis() - startedAt < tdelay){ 
+    
+        delay(1);// wait a bit on previous layer
+        
+        //turn off all layers
+        for(int pin=0; pin<8; pin++){
+            digitalWrite(layersPins[pin],LOW);
+        }
+        
+        digitalWrite(pinOE, HIGH);//Output Enabled off
+        //lines
+        PORTB=ICtable[0];//set IC
+        for(int ligne=0;ligne < 8; ligne++){
+          //write BUS for this leds'line
+	  for (int led=0;led <8;led++){
+	    digitalWrite(busPins[led], cube[currentLayer][ligne][led]); 
+	  }
+	  PORTB=ICtable[ligne +1]; //74HC574 is writed when clock pin goes LOW to HIGH. SO go to the next value for IC.
+        }
+        
+        //OE ON
+        digitalWrite(pinOE, LOW);
+	//layer on
+	digitalWrite(layersPins[currentLayer],HIGH);
+        
+        //change currentLayer
+        if(currentLayer == 8)
+            currentLayer=0;
+        else
+            currentLayer++;        
+    }
+}
+void fillCube(){
+ for (int i=0;i<8;i++){
+  for(int j=0;j<8;j++){
+   for(int k=0;k<8;k++){
+       cube[i][j][k]=true;
+   }
+  }
+ }
+}
+void lowCube(){
+ for (int i=0;i<8;i++){
+  for(int j=0;j<8;j++){
+   for(int k=0;k<8;k++){
+       cube[i][j][k]=false;
+   }
+  }
+ }
+}
+
+void setup(){
+    for(int pin=0; pin<8; pin++){
+        pinMode(layersPins[pin], OUTPUT);
+        pinMode(busPins[pin], OUTPUT);
+    }
+    for(int pin=0;pin<3;pin++){
+     pinMode(ICPins[pin],OUTPUT);   
+    }
+    pinMode(pinOE, OUTPUT);
+    digitalWrite(pinOE, LOW);
+    lowCube();  
+}
+
+void loop(){
+/*    
+ for (int i=0;i<8;i++){
+  for(int j=0;j<8;j++){
+   for(int k=0;k<8;k++){
+       cube[i][j][k]=HIGH;
+       writeCube(100);
+       cube[i][j][k]=LOW;
+   }
+  }
+ }
+*/
+    //remplir tout le layer haut
+    for(int i=0;i<8;i++){
+        for(int j=0;j<8;j++){
+        cube[7][i][j]=true;   
+        }
+    }
+    writeCube(1000);
+    
+    //descendre les leds 1 par une
+    for(int i=0;i<8;i++){
+        for(int j=0;j<8;j++){
+            for(int layer=7; layer >0; layer--){
+                    cube[layer][i][j]=false;
+                    cube[layer -1][i][j]=true;
+                    writeCube(15);
+            }
+            
+        }
+    }
+    //monter
+        for(int i=7;i>=0;i--){
+        for(int j=7;j>=0;j--){
+            for(int layer=0; layer <7; layer++){
+                    cube[layer][i][j]=false;
+                    cube[layer +1][i][j]=true;
+                    writeCube(15);
+            }
+            
+        }
+    }
+    
+    
+
+}