ArmfulKST
/
PE_08-01to04_ModularLCD_152
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Dependencies: mbed
Fork of
PE_08-01to04_ModularLCD
by 
Rob Toulson
Revision 1:66c78a2b81aa, committed 2014-12-07
- Comitter:
- Richard37
- Date:
- Sun Dec 07 22:55:13 2014 +0000
- Parent:
- 0:519ae7e3077e
- Commit message:
- Got our LCD Display working
Changed in this revision
diff -r 519ae7e3077e -r 66c78a2b81aa LCD.cpp
--- a/LCD.cpp Fri May 24 21:33:46 2013 +0000
+++ b/LCD.cpp Sun Dec 07 22:55:13 2014 +0000
@@ -1,35 +1,66 @@
#include "LCD.h"
- DigitalOut RS(p19); // RS
-DigitalOut RW(p19); // RW
- DigitalOut E(p20); // Enable
- BusOut data(p21, p22, p23, p24);// DB4-DB7
+ DigitalOut RS(A4); // RS
+DigitalOut RW(A3); // RW
+ DigitalOut E(A5); // Enable
+//BusOut data (D2, D3, D4, D5);// DB4-DB7
+ BusOut data (D5, D4, D3, D2);// DB4-DB7
/****initialise LCD function ****/
void LCD_init(void){
- wait(0.02);
RS=0; // set all low to write control/instruction data
// RW=0;
- E=0;
+ E=1;
+
+ wait_ms(20);
+ data=0x3; // for our display see ted
+ toggle_enable();
+ wait_ms(5); // must be more than 4.1ms
+ data=0x3; // for our display see ted
+ toggle_enable();
+ wait_ms(1); // must be more than 100us
+ data=0x3; // for our display see ted
+ toggle_enable();
+ wait_ms(5); //
+ data=0x2; // = 4 bit mode
+ toggle_enable();
// Function set
+ // N=0 : 2 lines (half lines!), F=0 : 5x7 font
data=0x2; // = 4 bit mode
toggle_enable();
data=0x8; // = 2-line mode, 7 dot characters
toggle_enable();
// Display Mode
+ // Display: display off, cursor off, blink off
data=0x0; //
toggle_enable();
- data=0xF; // display on, cursor on, blink on
+ data=0x8;
+ toggle_enable();
+// Clear display
+ data=0x0; //
+ toggle_enable();
+ data=0x1;
+ toggle_enable();
+ // Set entry mode: ID=1, S=0
+ data=0x0; //
+ toggle_enable();
+ data=0x6;
+ toggle_enable();
+ // Display: display on, cursor on, blink on
+ data=0x0;
+ toggle_enable();
+ data=0xF;
toggle_enable();
- // Clear display
+
+ /*// Clear display
data=0x0; //
toggle_enable();
data=0x1; // clear
- toggle_enable();
+ toggle_enable();*/
}
@@ -45,13 +76,25 @@
toggle_enable();
}
+/**** display ****/
+void send_command_to_LCD(char value ){
+
+ RS=0;
+ //***** display character *****************
+ data=value>>4; // value shifted right 4 = upper
+ toggle_enable();
+ data=value&0x0F; // value bitmask with 0x0F = lower
+ toggle_enable();
+}
+
/**** toggle enable function ****/
void toggle_enable(void){
- E=1;
wait(0.001);
E=0;
wait(0.001);
+ E=1;
+ wait(0.002);
}
/**** set location function ****/
diff -r 519ae7e3077e -r 66c78a2b81aa LCD.h --- a/LCD.h Fri May 24 21:33:46 2013 +0000 +++ b/LCD.h Sun Dec 07 22:55:13 2014 +0000 @@ -5,6 +5,7 @@ #include "mbed.h" void display_to_LCD(char value); //function to display characters on the LCD +void send_command_to_LCD(char value ); // function to send command to LCD void toggle_enable(void); //function to toggle the enable bit void LCD_init(void); //function to initialise the LCD
diff -r 519ae7e3077e -r 66c78a2b81aa main.cpp
--- a/main.cpp Fri May 24 21:33:46 2013 +0000
+++ b/main.cpp Sun Dec 07 22:55:13 2014 +0000
@@ -5,14 +5,21 @@
#include "LCD.h"
int main() {
+ int n;
+ const char line2[] = "Richard";
+
LCD_init();
+
display_to_LCD(0x48); // H
display_to_LCD(0x45); // E
display_to_LCD(0x4C); // L
display_to_LCD(0x4C); // L
display_to_LCD(0x4F); // O
- for(char x=0x30;x<=0x39;x++){
+ send_command_to_LCD(0xC0 );
+ for (n=0 ; n<8 ; ++n) display_to_LCD(line2[n]);
+ /*for(char x=0x30;x<=0x39;x++){
display_to_LCD(x); // display numbers 0-9
- }
+
+ }*/
}
diff -r 519ae7e3077e -r 66c78a2b81aa mbed.bld --- a/mbed.bld Fri May 24 21:33:46 2013 +0000 +++ b/mbed.bld Sun Dec 07 22:55:13 2014 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/63bcd7ba4912 \ No newline at end of file +http://mbed.org/users/mbed_official/code/mbed/builds/4fc01daae5a5 \ No newline at end of file