Hendrik Lipka / LcdWindow

Display text on LCD displays (even on multiple ones). Allow to create windows (frames) on display, and to combine them (split, add, duplicate, scroll). See http://mbed.org/users/hlipka/notebook/lcdwindow/ for more information.

Dependents:   Mbell

Diff: hd44780_8bit.cpp

Revision:
3:e5d5e2fe4bf6
Parent:
2:5ac5bab7daaf
Child:
9:2fe93daa2106
--- a/hd44780_8bit.cpp	Sat Nov 27 22:54:13 2010 +0000
+++ b/hd44780_8bit.cpp	Sun Nov 28 22:09:54 2010 +0000
@@ -30,9 +30,11 @@
 void HD44780LCD8bit::character(int column, int row, int c)
 {
     int address=(row)*0x40+(column);
+    _guard->take();
     sendCmd((unsigned char)address|0x80);
     wait_us(30);
     sendData(c);
+    _guard->release();
     wait_us(30);
 }
 
@@ -40,6 +42,7 @@
 void HD44780LCD8bit::writeText(const unsigned int column, const unsigned int row, const char text[]) {
 //    printf("print to %d,%d {%s}\n",line,pos,text);
     int address=row*0x40+column;
+    _guard->take();
     sendCmd((unsigned char)address|0x80);
     wait_us(30);
 
@@ -49,10 +52,13 @@
         wait_us(30);
         i++;
     }
+    _guard->release();
 }
 
 void HD44780LCD8bit::clear() {
+    _guard->take();
     sendCmd(1);
+    _guard->release();
 }
 
 void HD44780LCD8bit::sendCmd(const unsigned char cmd) {