Update ES/Lab/LAB6/JOHNSON_Counter.c

ES/Lab/LAB6/JOHNSON_Counter.c

@@ -0,0 +1,30 @@
+#include <LPC17xx.h>
+
+int main(){
+	unsigned long x, i;
+	// from P1.24 -> 31
+	LPC_PINCON->PINSEL3 &= 0x0000FFFF;  // values 
+
+	LPC_GPIO1->FIODIR = 0xFF000000; 
+	
+	x = 0x01000000; // new variable
+	
+	while(1){
+	x = 0x01000000; 
+
+	// LOOP to fill 24->31 incrementally
+	for(i=0;i<8;i++){
+		LPC_GPIO1->FIOSET=x; 
+		x = x<<1;
+	}
+	// for(i=0; i<1000; i++); // delay
+
+	// LOOP to empty 24->31 incrementally.
+	x = 0x01000000; 
+	for(i=0;i<8;i++){
+		LPC_GPIO1->FIOCLR=x;
+		x = x<<1;
+	}
+	// for(i=0; i<1000; i++); //delay
+	}
+}