VLSI Solution Oy VLSI Solution Oy Evaluation MP3 Player Source Code Documentation

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display.c File Reference

Functions for high level display. More...

#include "display.h"
#include "lcd.h"
#include "board.h"
#include "string.h"

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Functions

char InitDisplay (char style, char *title, char *text, int value)
 Reset display and print initial values.

void UpdateDisplay ()
 Paint display.


Variables

volatile xdata char displayPosition
xdata char displayTitle [16]
xdata char displayText [DS_TEXTLENGTH+1]
xdata char displayLength
xdata char displayStyle
xdata char displayValue

Detailed Description

Functions for high level display.

Definition in file display.c.

Function Documentation

char InitDisplay (  char  style,
char *  title,
char *  text,
int  value
) 
 

Reset display and print initial values.

Definition at line 23 of file display.c.

References displayLength, displayPosition, displayStyle, displayText, displayTitle, displayValue, DS_TEXTLENGTH, LcdLocateLine2, LcdPutString(), LcdReset(), and UpdateDisplay().

Referenced by main(), and Record(). 

00023                                                                 {
00024 
00025   LcdReset();
00026 
00027   //Init display title array
00028   for(displayPosition=0; displayPosition<8; displayPosition++){
00029     displayTitle[displayPosition]=' ';
00030   }
00031   displayTitle[8]=0; //ending zero
00032   strcpy(displayTitle, title);
00033 
00034   
00035   displayLength = strlen(text);
00036   //Init display text array
00037   //Clear display text array to spaces
00038   for(displayPosition=0; displayPosition<DS_TEXTLENGTH; displayPosition++){
00039     displayText[displayPosition]=' ';
00040   }
00041   displayText[DS_TEXTLENGTH] = 0; //ending zero
00042   strcpy(displayText, text);
00043 
00044 
00045   displayPosition = 0;
00046   displayStyle = style;
00047   displayValue = value;
00048   LcdPutString(displayTitle);
00049   LcdLocateLine2();
00050   LcdPutString(displayText);
00051   UpdateDisplay();
00052 
00053   return 0;
00054 }

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void UpdateDisplay (   ) 
 

Paint display.

Definition at line 58 of file display.c.

References displayPosition, displayStyle, displayText, displayTitle, displayValue, DS_ARROWS, DS_NO_YES, DS_NUMERIC, DS_PERCENTAGE, DS_RAWTEXT, DS_STATIC, DS_TEXT, LcdLocateHome, LcdLocateLine2, LcdPutChar(), LcdPutConstantString(), LcdPutUInt(), and temp.

Referenced by AvailableProcessorTime(), and InitDisplay(). 

00058                     {
00059 
00060   signed char temp;
00061 
00062   LcdLocateHome();
00063   LcdPutChar(displayTitle[0]);
00064   LcdPutChar(displayTitle[1]);
00065   LcdPutChar(displayTitle[2]);
00066   LcdPutChar(displayTitle[3]);
00067   LcdPutChar(displayTitle[4]);
00068   LcdPutChar(displayTitle[5]);
00069   LcdPutChar(displayTitle[6]);
00070   LcdPutChar(displayTitle[7]);
00071   LcdLocateLine2();
00072   
00073   if (displayStyle == DS_STATIC){
00074     for (temp=0; temp<8; temp++){
00075       LcdPutChar(displayText[temp]);
00076     }
00077   }
00078 
00079   if (displayStyle == DS_TEXT){
00080     for (temp=displayPosition; temp<displayPosition + 8; temp++){
00081       if (temp<0){
00082         LcdPutChar(' ');
00083       }else{
00084         if (displayText[temp]){
00085           LcdPutChar(displayText[temp]);      
00086         }else{
00087           LcdPutChar(' ');
00088         }
00089       }      
00090     }
00091   }
00092 
00093   if (displayStyle == DS_NUMERIC){
00094     LcdPutUInt(displayValue);
00095     LcdPutConstantString("        ");
00096   }
00097 
00098   if (displayStyle == DS_NO_YES){
00099     LcdPutConstantString(" No<>Yes");
00100   }
00101 
00102   if (displayStyle == DS_ARROWS){
00103     LcdPutConstantString(" <-   ->");
00104   }
00105 
00106   if (displayStyle == DS_PERCENTAGE){
00107     unsigned char majorp, minorp;
00108     if (displayValue>100){
00109       displayValue=100;
00110     }
00111     
00112     majorp = (displayValue-4) / 12;
00113     minorp = ((displayValue-4) % 12) >> 1;
00114     for (temp=0; temp<8; temp++){
00115       if (majorp>temp){
00116         LcdPutChar(4);
00117       }else{
00118         if (majorp<temp){
00119           LcdPutChar(' ');
00120         }else{
00121           switch(minorp){
00122           case 0:
00123             LcdPutChar(' ');
00124             break;
00125           case 1:
00126             LcdPutChar(0);
00127             break;
00128           case 2:
00129             LcdPutChar(1);
00130             break;
00131           case 3:
00132             LcdPutChar(2);
00133             break;
00134           case 4:
00135             LcdPutChar(3);
00136             break;
00137           case 5:
00138             LcdPutChar(4);
00139             break;
00140           }//switch
00141         }
00142       }
00143     }         
00144     //LcdPutUInt(displayValue);
00145     //LcdPutConstantString("%       ");
00146   }
00147 
00148   if (displayStyle==DS_RAWTEXT){
00149     LcdPutChar(displayTitle[8]);
00150     LcdPutChar(displayTitle[9]);
00151     LcdPutChar(displayTitle[10]);
00152     LcdPutChar(displayTitle[11]);
00153     LcdPutChar(displayTitle[12]);
00154     LcdPutChar(displayTitle[13]);
00155     LcdPutChar(displayTitle[14]);
00156     LcdPutChar(displayTitle[15]);
00157   }
00158 
00159 
00160 }

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Variable Documentation

xdata char displayLength
 

Definition at line 13 of file display.c.

Referenced by InitDisplay(), and timer0_interrupt().

volatile xdata char displayPosition
 

Definition at line 10 of file display.c.

Referenced by InitDisplay(), timer0_interrupt(), and UpdateDisplay().

xdata char displayStyle
 

Definition at line 14 of file display.c.

Referenced by AvailableProcessorTime(), InitDisplay(), and UpdateDisplay().

xdata char displayText[DS_TEXTLENGTH+1]
 

Definition at line 12 of file display.c.

Referenced by InitDisplay(), OpenFile(), and UpdateDisplay().

xdata char displayTitle[16]
 

Definition at line 11 of file display.c.

Referenced by AvailableProcessorTime(), InitDisplay(), ScreenSetPlayTime(), and UpdateDisplay().

xdata char displayValue
 

Definition at line 15 of file display.c.

Referenced by AvailableProcessorTime(), InitDisplay(), Record(), and UpdateDisplay().

All software copyright 2000-2004 VLSI Solution OY. Redistribution of these software modules are limited to promotional use only and only with the VS1011 / VS1002 / VS1003 MP3-Evakit evaluation boards. Free or commercial use of these software modules in MP3 players is ok if the product includes MP3 decoder chip(s) from VLSI. You can request the complete (compilable) package from mp3@vlsi.fi