Diff: main.cpp

Revision:

0:b77078f30b97

Child:

1:8ffd3f6b11b6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Nov 17 10:16:30 2009 +0000
@@ -0,0 +1,37 @@
+// 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"
+
+TextLCD lcd(p10, p11, p12, p15, p16, p29, p30);
+DigitalOut led(LED1);
+
+int main() {
+    lcd.locate(0,0);
+    for(int i=0; i<80; i++) {
+        lcd._rs = 1; 
+        lcd.writeByte('0' + i);
+    }
+}
+