armsrc/LCD_disabled.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 #include "LCD_disabled.h"
   9
  10 void LCDSend(unsigned int data) {
  11     // 9th bit set for data, clear for command
  12     while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0);    // wait for the transfer to complete
  13     // For clarity's sake we pass data with 9th bit clear and commands with 9th
  14     // bit set since they're implemented as defines, se we need to invert bit
  15     AT91C_BASE_SPI->SPI_TDR = data ^ 0x100;                       // Send the data/command
  16 }
  17
  18 void LCDSetXY(unsigned char x, unsigned char y) {
  19     LCDSend(PPASET);            // page start/end ram
  20     LCDSend(y);                 // Start Page to display to
  21     LCDSend(131);               // End Page to display to
  22
  23     LCDSend(PCASET);            // column start/end ram
  24     LCDSend(x);                 // Start Column to display to
  25     LCDSend(131);               // End Column to display to
  26 }
  27
  28 void LCDSetPixel(unsigned char x, unsigned char y, unsigned char color) {
  29     LCDSetXY(x, y);             // Set position
  30     LCDSend(PRAMWR);            // Now write the pixel to the display
  31     LCDSend(color);             // Write the data in the specified Color
  32 }
  33
  34 void LCDFill(unsigned char xs, unsigned char ys, unsigned char width, unsigned char height, unsigned char color) {
  35     unsigned char i, j;
  36
  37     for (i = 0; i < height; i++) { // Number of horizontal lines
  38         LCDSetXY(xs, ys + i);   // Goto start of fill area (Top Left)
  39         LCDSend(PRAMWR);        // Write to display
  40
  41         for (j = 0; j < width; j++) // pixels per line
  42             LCDSend(color);
  43     }
  44 }
  45
  46 void LCDString(char *lcd_string, const char *font_style, unsigned char x, unsigned char y, unsigned char fcolor, unsigned char bcolor) {
  47     unsigned int  i;
  48     unsigned char mask = 0, px, py, xme, yme, offset;
  49     const char *data;
  50
  51     data = font_style;          // point to the start of the font table
  52
  53     xme = *data;                // get font x width
  54     data++;
  55     yme = *data;                // get font y length
  56     data++;
  57     offset = *data;             // get data bytes per font
  58
  59     do {
  60         // point to data in table to be loaded
  61         data = (font_style + offset) + (offset * (int)(*lcd_string - 32));
  62
  63         for (i = 0; i < yme; i++) {
  64             mask |= 0x80;
  65
  66             for (px = x; px < (x + xme); px++) {
  67                 py = y + i;
  68
  69                 if (*data & mask)    LCDSetPixel(px, py, fcolor);
  70                 else                 LCDSetPixel(px, py, bcolor);
  71
  72                 mask >>= 1;
  73             }
  74             data++;
  75         }
  76         x += xme;
  77
  78         lcd_string++;                       // next character in string
  79
  80     } while (*lcd_string != '\0');          // keep spitting chars out until end of string
  81 }
  82
  83 void LCDReset(void) {
  84     LED_A_ON();
  85     SetupSpi(SPI_LCD_MODE);
  86     LOW(GPIO_LRST);
  87     SpinDelay(100);
  88
  89     HIGH(GPIO_LRST);
  90     SpinDelay(100);
  91     LED_A_OFF();
  92 }
  93
  94 void LCDInit(void) {
  95     int i;
  96
  97     LCDReset();
  98
  99     LCDSend(PSWRESET);          // software reset
 100     SpinDelay(100);
 101     LCDSend(PSLEEPOUT);         // exit sleep mode
 102     LCDSend(PBSTRON);           // booster on
 103     LCDSend(PDISPON);           // display on
 104     LCDSend(PNORON);            // normal on
 105     LCDSend(PMADCTL);           // rotate display 180 deg
 106     LCDSend(0xC0);
 107
 108     LCDSend(PCOLMOD);           // color mode
 109     LCDSend(0x02);              // 8bpp color mode
 110
 111     LCDSend(PSETCON);           // set contrast
 112     LCDSend(0xDC);
 113
 114     // clear display
 115     LCDSetXY(0, 0);
 116     LCDSend(PRAMWR);            // Write to display
 117     i = LCD_XRES * LCD_YRES;
 118     while (i--) LCDSend(WHITE);
 119
 120     // test text on different colored backgrounds
 121     LCDString(" The quick brown fox  ", (char *)&FONT6x8, 1, 1 + 8 * 0, WHITE, BLACK);
 122     LCDString("  jumped over the     ", (char *)&FONT6x8, 1, 1 + 8 * 1, BLACK, WHITE);
 123     LCDString("     lazy dog.        ", (char *)&FONT6x8, 1, 1 + 8 * 2, YELLOW, RED);
 124     LCDString(" AaBbCcDdEeFfGgHhIiJj ", (char *)&FONT6x8, 1, 1 + 8 * 3, RED, GREEN);
 125     LCDString(" KkLlMmNnOoPpQqRrSsTt ", (char *)&FONT6x8, 1, 1 + 8 * 4, MAGENTA, BLUE);
 126     LCDString("UuVvWwXxYyZz0123456789", (char *)&FONT6x8, 1, 1 + 8 * 5, BLUE, YELLOW);
 127     LCDString("`-=[]_;',./~!@#$%^&*()", (char *)&FONT6x8, 1, 1 + 8 * 6, BLACK, CYAN);
 128     LCDString("     _+{}|:\\\"<>?     ", (char *)&FONT6x8, 1, 1 + 8 * 7, BLUE, MAGENTA);
 129
 130     // color bands
 131     LCDFill(0, 1 + 8 * 8, 132, 8, BLACK);
 132     LCDFill(0, 1 + 8 * 9, 132, 8, WHITE);
 133     LCDFill(0, 1 + 8 * 10, 132, 8, RED);
 134     LCDFill(0, 1 + 8 * 11, 132, 8, GREEN);
 135     LCDFill(0, 1 + 8 * 12, 132, 8, BLUE);
 136     LCDFill(0, 1 + 8 * 13, 132, 8, YELLOW);
 137     LCDFill(0, 1 + 8 * 14, 132, 8, CYAN);
 138     LCDFill(0, 1 + 8 * 15, 132, 8, MAGENTA);
 139
 140 }