git.zerfleddert.de Git - proxmark3-svn/blob - armsrc/LCD.c

   1 //-----------------------------------------------------------------------------
   2 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   3 // at your option, any later version. See the LICENSE.txt file for the text of
   4 // the license.
   5 //-----------------------------------------------------------------------------
   6 // LCD code
   7 //-----------------------------------------------------------------------------
   8
   9 #include "proxmark3.h"
  10 #include "apps.h"
  11 #include "LCD.h"
  12
  13 void LCDSend(unsigned int data)
  14 {
  15         // 9th bit set for data, clear for command
  16         while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0);      // wait for the transfer to complete
  17         // For clarity's sake we pass data with 9th bit clear and commands with 9th
  18         // bit set since they're implemented as defines, se we need to invert bit
  19         AT91C_BASE_SPI->SPI_TDR = data^0x100;                                                   // Send the data/command
  20 }
  21
  22 void LCDSetXY(unsigned char x, unsigned char y)
  23 {
  24         LCDSend(PPASET);                        // page start/end ram
  25         LCDSend(y);                                     // Start Page to display to
  26         LCDSend(131);                           // End Page to display to
  27
  28         LCDSend(PCASET);                        // column start/end ram
  29         LCDSend(x);                                     // Start Column to display to
  30         LCDSend(131);                           // End Column to display to
  31 }
  32
  33 void LCDSetPixel(unsigned char x, unsigned char y, unsigned char color)
  34 {
  35         LCDSetXY(x,y);                          // Set position
  36         LCDSend(PRAMWR);                        // Now write the pixel to the display
  37         LCDSend(color);                         // Write the data in the specified Color
  38 }
  39
  40 void LCDFill (unsigned char xs,unsigned char ys,unsigned char width,unsigned char height, unsigned char color)
  41 {
  42     unsigned char i,j;
  43
  44     for (i=0;i < height;i++)    // Number of horizontal lines
  45     {
  46                 LCDSetXY(xs,ys+i);              // Goto start of fill area (Top Left)
  47                 LCDSend(PRAMWR);                // Write to display
  48
  49                 for (j=0;j < width;j++) // pixels per line
  50                         LCDSend(color);
  51     }
  52 }
  53
  54 void LCDString (char *lcd_string, const char *font_style,unsigned char x, unsigned char y, unsigned char fcolor, unsigned char bcolor)
  55 {
  56         unsigned int  i;
  57         unsigned char mask=0, px, py, xme, yme, offset;
  58         const char *data;
  59
  60         data = font_style;                      // point to the start of the font table
  61
  62         xme = *data;                            // get font x width
  63         data++;
  64         yme = *data;                            // get font y length
  65         data++;
  66         offset = *data;                         // get data bytes per font
  67
  68         do
  69         {
  70                 // point to data in table to be loaded
  71                 data =  (font_style + offset) + (offset * (int)(*lcd_string - 32));
  72
  73                 for (i=0;i < yme;i++) {
  74                         mask |=0x80;
  75
  76                         for (px=x; px < (x + xme); px++) {
  77                                 py= y + i;
  78
  79                                 if (*data & mask)       LCDSetPixel (px,py,fcolor);
  80                                 else                            LCDSetPixel (px,py,bcolor);
  81
  82                                 mask>>=1;
  83                         }
  84                         data++;
  85                 }
  86                 x+=xme;
  87
  88                 lcd_string++;                                           // next character in string
  89
  90         } while(*lcd_string !='\0');                    // keep spitting chars out until end of string
  91 }
  92
  93 void LCDReset(void)
  94 {
  95         LED_A_ON();
  96         SetupSpi(SPI_LCD_MODE);
  97         LOW(GPIO_LRST);
  98         SpinDelay(100);
  99
 100         HIGH(GPIO_LRST);
 101         SpinDelay(100);
 102         LED_A_OFF();
 103 }
 104
 105 void LCDInit(void)
 106 {
 107         int i;
 108
 109         LCDReset();
 110
 111         LCDSend(PSWRESET);                      // software reset
 112         SpinDelay(100);
 113         LCDSend(PSLEEPOUT);                     // exit sleep mode
 114         LCDSend(PBSTRON);                       // booster on
 115         LCDSend(PDISPON);                       // display on
 116         LCDSend(PNORON);                        // normal on
 117         LCDSend(PMADCTL);                       // rotate display 180 deg
 118         LCDSend(0xC0);
 119
 120         LCDSend(PCOLMOD);                       // color mode
 121         LCDSend(0x02);                          // 8bpp color mode
 122
 123     LCDSend(PSETCON);                   // set contrast
 124     LCDSend(0xDC);
 125
 126         // clear display
 127     LCDSetXY(0,0);
 128         LCDSend(PRAMWR);                        // Write to display
 129         i=LCD_XRES*LCD_YRES;
 130         while(i--) LCDSend(WHITE);
 131 }