Diff: main.cpp

Revision:

1:ac48b187213c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu May 27 13:44:15 2010 +0000
@@ -0,0 +1,43 @@
+// Write to all HD44780 TextLCD RAM locations, sford
+//
+// A quick hack to write to all the display RAM locations
+// in an HD44780 display, to identify which location maps
+// to which character.
+//
+// Instructions:
+//  - Change TextLCD pinout as appropriate so it works
+//  - Run, and it should fill the screen with characters
+//  - Identify what characters are at the start of each row
+//
+// To determine what address each line starts at, you subtract the 
+// ascii code for '0'(48) from the character at the start of each line
+//  - see http://www.asciitable.com/
+// 
+// e.g.
+//   +----------------+
+//   |0123456789:;<=>?| first char = '0' (48)
+//   |XYZ....         | first char = 'X' (88)
+//   +----------------+
+//  
+// So in this case, the RAM offsets are 0 and 40
+
+#include "mbed.h"
+#include "TextLCD.h"
+DigitalOut zero(p11);
+TextLCD lcd(p10, p12, p15, p16, p29, p30, TextLCD::LCD16x2B);
+
+int main() {
+    lcd.printf("hithere");
+    wait(1);
+    lcd.putc('i');
+    wait(1);
+    lcd.cls();
+    wait(1);
+    lcd.locate(4, 1);    
+    wait(1);
+    lcd.printf("jdlkjfksj");
+    for(int i=0; i<30; i++) {
+        lcd.putc('A' + i);
+        wait(0.3);
+    }
+}