LCD initialization, using CCS4 and EM430F6137RF900

Hello,

I’m trying to initialize an lcd display. The lcd is doing something strange when I run the code then turn the power on an off on the lcd the code will perform the last instruction only. For example I if I try to display “Hello”, the “o” will repeat randomly sometimes on the second like a couple of “o’s” sometimes on the top. Again this is running the code and then clicking the power on an off the lcd. I’ve also tried different delays. Any help at all would be highly appreciated; it seems that I have tried everything and nothing it fixing this issue.

Hardware: EM430F6137RF900, lcd: http://www.lumex.com/specs/LCR-U01602DSF+D-WH.pdf

Software: Code Composer Studio v4

Code:

#include <stdio.h> // standard library

#include "cc430f6137.h" //cc430f6137 library

void latch ();

void main()

{

      P4DIR = 0xFF; //ALL PORT 4 OUT

      P3DIR = 0x07; //3.0, 3.1, 3.2 PORT 3 OUT

      P3OUT = 0x00; //SET ENABLE OFF, SET RS and RW OFF

      //POWER ON

      __delay_cycles(1);

      P4OUT = 0x30; //STEP1 - Wake up

      latch();

      __delay_cycles(1);

      P4OUT = 0x30; //STEP2 - Wake up

      latch();

      __delay_cycles(1);

      P4OUT = 0x30; //STEP3 - Wake up

      latch();

      __delay_cycles(1); //STEP4 - Function set

      P4OUT = 0x38;

      latch();

      __delay_cycles(1); //STEP5 - Display off

      P4OUT = 0x10;

      latch();

      P4OUT = 0x0C; //STEP6 - Display clear

      latch();

      P4OUT = 0x06; //STEP7 - Entry mode set

      latch();

      P4OUT = 0x0F;     //Set cursor to blink

      latch();

}

void latch ()

{

      P3OUT ^= 0x04; //on

      __delay_cycles(1);

      P3OUT ^= 0x04;    //off

}