Revision 0:723d0d8c0d09, committed 2016-11-28

Comitter:

dfalanga

Date:

Mon Nov 28 10:35:04 2016 +0000

Commit message:

Esercitazione4_1

Changed in this revision

--- /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(); 
+     }
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LCD.h	Mon Nov 28 10:35:04 2016 +0000
@@ -0,0 +1,9 @@
+/* Program Example 1: LCD.h header file 2. */ 
+    #ifndef LCD_H 
+    #define LCD_H 
+    #include "mbed.h" 
+    void toggle_enable(void); //function to toggle/pulse the enable bit 
+    void LCD_init(void); //function to initialize the LCD 
+    void display_to_LCD(char value); //function to display characters 
+    void set_location(char location); 
+    #endif
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Nov 28 10:35:04 2016 +0000
@@ -0,0 +1,19 @@
+/* Program Example 1 Utilizing LCD functions in the main.cpp file 2. */ 
+#include "LCD.h" 
+int main() 
+{ 
+    char loc=0x40;
+    LCD_init(); // call the initialize function 
+    display_to_LCD(0x46); // 
+    display_to_LCD(0x6F); // 
+    display_to_LCD(0x72); // 
+    display_to_LCD(0x7A); //
+    display_to_LCD(0x61); // 
+    set_location(loc); 
+    display_to_LCD(0x4E); // 
+    display_to_LCD(0x61); // 
+    display_to_LCD(0x70); // 
+    display_to_LCD(0x6F); // 
+    display_to_LCD(0x6c); // 
+    display_to_LCD(0x69); // 
+ }
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon Nov 28 10:35:04 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/25aea2a3f4e3
\ No newline at end of file