Diff: LCD.cpp

Revision:

0:723d0d8c0d09

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LCD.cpp	Mon Nov 28 10:35:04 2016 +0000
@@ -0,0 +1,47 @@
+/* Program Example 1: Declaration of objects and functions in LCD.cpp file 2. */ 
+#include "LCD.h" 
+DigitalOut RS(D12); 
+DigitalOut E(D11);
+BusOut data(D5, D4, D3, D2);
+    void toggle_enable(void)
+    { 
+        E=1;
+        wait(0.001);
+        E=0; 
+        wait(0.001);
+    } 
+
+    void LCD_init(void) { 
+        wait(0.02); // pause for 20 ms 
+        RS=0; // set low to write control data 
+        E=0; // set low 20. //function mode 21. 
+        data=0x2; // 4 bit mode (data packet 1, DB4-DB7) 22. 
+        toggle_enable();  
+        data=0x8; // 2-line, 7 dot char (data packet 2, DB0-DB3) 24. 
+        toggle_enable(); //display mode 26. 
+        data=0x0; // 4 bit mode (data packet 1, DB4-DB7)
+        toggle_enable(); 
+        data=0xF; // display on, cursor on, blink on 
+        toggle_enable(); //clear display 
+        data=0x0; // 
+        toggle_enable(); 
+        data=0x1; // clear 
+        toggle_enable(); 
+    } //display function 
+
+    void display_to_LCD(char value) 
+    { 
+        RS=1; // set high to write character data 
+        data=value>>4; // value shifted right 4 = upper nibble 
+        toggle_enable(); 
+        data=value; // value bitmask with 0x0F = lower nibble 
+        toggle_enable(); 
+     }  //locate function 
+     void set_location(char location) 
+     { 
+        RS=0; 
+        data=(location|0x80)>>4; // upper nibble 
+        toggle_enable(); 
+        data=location&0x0F; // lower nibble 
+        toggle_enable(); 
+     }
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