/* sysLcd.c - Samsung SBC ARM7 LCD driver routines *//* Copyright 1984-2001 Wind River Systems, Inc. */#include "copyright_wrs.h"/*modification history--------------------01c,26apr01,m_h  convert tabs to spaces for readability01b,19apr01,m_h  add carriage routine at EOF to avoid compile warning01a,10apr01,g_h  created*//* includes */#include "vxWorks.h"#include "config.h"#include "string.h"#include "sysLcd.h"/********************************************************************************* sysLcdClear - clear the LCD** This routine clear the LCD panel.** SEE ALSO: sysLcdInit(), sysLcdSetPos(), sysLcdWrite(), sysLcdWriteString().** RETURNS: N/A*/void sysLcdClear(void)    {    /* Clear LCD */    LCD_WRITE_COMMAND(LCD_CLEAR_COMMAND);        /* Wait */    LCD_DELAY(200);}/********************************************************************************* sysLcdInit - initialize the SBC ARM7 board LCD** This routine initializes SBC ARM7 LCD panel. Normally, it is called from * sysHwInit() in sysLib.c.** SEE ALSO: sysLcdClear(), sysLcdSetPos(), sysLcdWrite(), sysLcdWriteString().** RETURNS: N/A*/void sysLcdInit(void)    {    int count;    LCD_DELAY(200);    for(count = 0; count < 4; count++)        {        LCD_WRITE_COMMAND(LCD_INIT_COMMAND);   /* Write init command */                LCD_DELAY(20000);                      /* Wait */        }    LCD_WRITE_COMMAND(LCD_INIT_COMMAND);    LCD_DELAY(20000);    LCD_WRITE_COMMAND(LCD_8BIT_2LINE_COMMAND); /* 8Bit, 2 Line */    LCD_DELAY(20000);                          /* Wait */    LCD_WRITE_COMMAND(LCD_OFF_COMMAND);        /* Turn off LCD */    LCD_DELAY(20000);                          /* Wait */    LCD_WRITE_COMMAND(LCD_CLEAR_COMMAND);      /* Clear LCD */    LCD_DELAY(20000);                          /* Wait */    LCD_WRITE_COMMAND(LCD_INCR_MODE_COMMAND);  /* Set INCR mode */    LCD_DELAY(20000);                          /* Wait */    LCD_WRITE_COMMAND(LCD_ON_COMMAND);         /* Turn on LCD */    LCD_DELAY(20000);                          /* Wait */}/********************************************************************************* sysLcdWriteString - write a string to the SBC ARM7 board LCD** This routine write  given string to the SBC ARM7 LCD panel.** SEE ALSO: sysLcdInit(), sysLcdSetPos(), sysLcdWrite(), sysLcdClear().** RETURNS: OK oe ERROR*/STATUS sysLcdWriteString(char *string, char lineNumber, char columns){    char *ch;    /* Set position */    if(sysLcdSetPos(lineNumber, columns) != OK)        return(ERROR);    ch = ((char *)(string));    /* Write string */    while(*ch != '\0')        {        LCD_DELAY(200);        sysLcdWrite(*ch);        ch++;        }    LCD_DELAY(200);    return(OK);}/********************************************************************************* sysLcdWrite - writer character to the SBC ARM7 board LCD** This routine write a character to the SBC ARM7 LCD panel.** SEE ALSO: sysLcdInit(), sysLcdSetPos(), sysLcdClear(), sysLcdWriteString().** RETURNS: N/A*/void sysLcdWrite(char ch)    {    LCD_WRITE(ch);    }/********************************************************************************* sysLcdSetPos - set the prompt position on the SBC ARM7 board LCD** This routine set the prompt position on the SBC ARM7 LCD panel.** SEE ALSO: sysLcdInit(), sysLcdClear(), sysLcdWrite(), sysLcdWriteString().** RETURNS: OK oe ERROR*/STATUS sysLcdSetPos(char line, char column)    {    char numOfShift = 0, val;    /* Check if boundary is legal */    if(line < LCD_MIN_LINES || line > LCD_MAX_LINES || column < LCD_MIN_COLUMNS || column > LCD_MAX_COLUMNS)        return(ERROR);    numOfShift = (7-(line - 1));    val = ((LCD_LINE_POS_MASK << numOfShift) + (column - 1));    LCD_WRITE_COMMAND(val);         /* Turn on LCD */    return(OK);    }