1 files changed, 61 insertions, 0 deletions
diff --git a/lcd.c b/lcd.c
new file mode 100755
index 0000000..3405782
--- /dev/null
+++ b/lcd.c
@@ -0,0 +1,61 @@
+#include "board.h"
+#include "delay.h"
+#include "lcd.h"
+
+static void lcdPulseE(void);
+static void lcdSetDAT(uint8_t value);
+static void lcdSendCommand(uint8_t command);
+static void lcdSendData(uint8_t data);
+
+void lcdInit(void)
+{
+    // Give time for LCD to prepare itself
+    delay(100);
+    lcdSendCommand(0x38);
+    lcdSendCommand(0x10);
+    lcdSendCommand(0x0D);
+    delay(5);
+    lcdClear();
+}
+
+void lcdClear(void)
+{
+    lcdSendCommand(0x01);
+    delay(2);
+}
+
+void lcdPuts(const char *s)
+{
+	lcdSendCommand(0x06);
+	while (*s != '\0')
+		lcdSendData(*s++);
+}
+
+void lcdPulseE(void)
+{
+    P2OUT |= LCD_E;
+    delay(2);
+    P2OUT &= ~(LCD_E);
+}
+
+void lcdSetDAT(uint8_t value)
+{
+    P2OUT &= ~(LCD_DATH);
+    P2OUT |= (value >> 4) & LCD_DATH;
+    P1OUT &= ~(LCD_DATL);
+    P1OUT |= value & LCD_DATL;
+}
+
+void lcdSendCommand(uint8_t command)
+{
+    P1OUT &= ~(LCD_RS);
+    lcdSetDAT(command);
+    lcdPulseE();
+}
+
+void lcdSendData(uint8_t data)
+{
+    P1OUT |= LCD_RS;
+    lcdSetDAT(data);
+    lcdPulseE();
+}