Diff: LCD/DogLCD.cpp

Revision:

1:b7a86d680935

Parent:

0:2a5dccfd318f

--- a/LCD/DogLCD.cpp	Thu Jan 14 00:49:39 2010 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,207 +0,0 @@
-#include "DogLCD.h"
-
-// macro to make sure x falls into range from low to high (inclusive)
-#define CLAMP(x, low, high) { if ( (x) < (low) ) x = (low); if ( (x) > (high) ) x = (high); } while (0);
-
-void DogLCD::_send_commands(const unsigned char* buf, size_t size)
-{
-    // for commands, A0 is low
-    _spi.format(8,0);
-    _spi.frequency(10000000);
-    _cs = 0;
-    _a0 = 0;
-    while ( size-- > 0 )
-        _spi.write(*buf++);
-    _cs = 1;
-}
-
-void DogLCD::_send_data(const unsigned char* buf, size_t size)
-{
-    // for data, A0 is high
-    _spi.format(8,0);
-    _spi.frequency(10000000);
-    _cs = 0;
-    _a0 = 1;
-    while ( size-- > 0 )
-        _spi.write(*buf++);
-    _cs = 1;
-    _a0 = 0;
-}
-
-// set column and page number
-void DogLCD::_set_xy(int x, int y)
-{
-    //printf("_set_xy(%d,%d)\n", x, y);
-    CLAMP(x, 0, LCDWIDTH-1);
-    CLAMP(y, 0, LCDPAGES-1);
-    unsigned char cmd[3];
-    cmd[0] = 0xB0 | (y&0xF);
-    cmd[1] = 0x10 | (x&0xF);
-    cmd[2] = (x>>4)&0xF;
-    _send_commands(cmd, 3);        
-}
-
-// initialize and turn on the display
-void DogLCD::init()
-{
-    const unsigned char init_seq[] = {
-        0x40,    //Display start line 0
-        0xa1,    //ADC reverse
-        0xc0,    //Normal COM0...COM63
-        0xa6,    //Display normal
-        0xa2,    //Set Bias 1/9 (Duty 1/65)
-        0x2f,    //Booster, Regulator and Follower On
-        0xf8,    //Set internal Booster to 4x
-        0x00,
-        0x27,    //Contrast set
-        0x81,
-        0x16,
-        0xac,    //No indicator
-        0x00,
-        0xaf,    //Display on
-    };        
-    //printf("Reset=L\n");
-    _reset = 0;
-    //printf("Power=H\n");
-    _power = 1;
-    //wait_ms(1);
-    //printf("Reset=H\n");
-    _reset = 1;
-    //wait(5);
-    //printf("Sending init commands\n");
-    _send_commands(init_seq, sizeof(init_seq));
-}
-
-void DogLCD::send_pic(const unsigned char* data)
-{
-    //printf("Sending picture\n");
-    for (int i=0; i<LCDPAGES; i++)
-    {
-        _set_xy(0, i);
-        _send_data(data + i*LCDWIDTH, LCDWIDTH);
-    }
-}
-
-void DogLCD::clear_screen()
-{
-    //printf("Clear screen\n");
-    memset(_framebuffer, 0, sizeof(_framebuffer));
-    if ( _updating == 0 )
-    {
-        send_pic(_framebuffer);
-    }
-}
-
-void DogLCD::all_on(bool on)
-{
-    //printf("Sending all on %d\n", on);
-    unsigned char cmd = 0xA4 | (on ? 1 : 0);
-    _send_commands(&cmd, 1);
-}
-
-void DogLCD::pixel(int x, int y, int colour)
-{
-    CLAMP(x, 0, LCDWIDTH-1);
-    CLAMP(y, 0, LCDHEIGHT-1);
-    int page = y / 8;
-    unsigned char mask = 1<<(y%8);
-    unsigned char *byte = &_framebuffer[page*LCDWIDTH + x];
-    if ( colour == 0 )
-        *byte &= ~mask; // clear pixel
-    else
-        *byte |= mask; // set pixel
-    if ( !_updating )
-    {
-        _set_xy(x, page);
-        _send_data(byte, 1);
-    }
-}
-
-void DogLCD::fill(int x, int y, int width, int height, int colour)
-{
-    /*
-      If we need to fill partial pages at the top:
-      
-      ......+---+---+.....
-       ^    | = | = |     = : don't touch
-       |    | = | = |     * : update 
-      y%8   | = | = |      
-       |    | = | = |      
-       v    | = | = |      
-    y---->  | * | * |      
-            | * | * |      
-            | * | * |
-            +---+---+      
-    */
-    //printf("fill(x=%d, y=%d, width=%d, height=%d, colour=%x)\n",  x, y, width, height, colour);
-    CLAMP(x, 0, LCDWIDTH-1);
-    CLAMP(y, 0, LCDHEIGHT-1);
-    CLAMP(width, 0, LCDWIDTH - x);
-    CLAMP(height, 0, LCDHEIGHT - y);
-    int page = y/8;
-    int firstpage = page;
-    int partpage = y%8;
-    if ( partpage != 0 )
-    {
-        // we need to process partial bytes in the top page
-        unsigned char mask = (1<<partpage) - 1; // this mask has 1s for bits we need to leave
-        unsigned char *bytes = &_framebuffer[page*LCDWIDTH + x];
-        for ( int i = 0; i < width; i++, bytes++ )
-        {
-          // clear "our" bits
-          *bytes &= mask;
-          if ( colour != 0 )
-            *bytes |= ~mask; // set our bits
-        }
-        height -= partpage;
-        page++;
-    }
-    while ( height >= 8 )
-    {
-        memset(&_framebuffer[page*LCDWIDTH + x], colour == 0 ? 0 : 0xFF, width);
-        page++;
-        height -= 8; 
-    } 
-    if ( height != 0 )
-    {
-        // we need to process partial bytes in the bottom page
-        unsigned char mask = ~((1<<partpage) - 1); // this mask has 1s for bits we need to leave
-        unsigned char *bytes = &_framebuffer[page*LCDWIDTH + x];
-        for ( int i = 0; i < width; i++, bytes++ )
-        {
-          // clear "our" bits
-          *bytes &= mask;
-          if ( colour != 0 )
-            *bytes |= ~mask; // set our bits
-        }
-        page++;
-    }
-    //printf("_updating=%d\n", _updating);
-    if ( !_updating )
-    {
-        int laststpage = page;
-        for ( page = firstpage; page < laststpage; page++)
-        {
-            //printf("setting x=%d, page=%d\n", x, page);
-            _set_xy(x, page);
-            //printf("sending %d bytes at offset %x\n", width, page*LCDWIDTH + x);
-            _send_data(&_framebuffer[page*LCDWIDTH + x], width);
-        }
-    }
-}     
-
-void DogLCD::beginupdate()
-{
-    _updating++;
-    //printf("beginupdate: %d\n", _updating);
-}
-
-void DogLCD::endupdate()
-{    
-    _updating--;
-    //printf("endupdate: %d\n", _updating);
-    if ( _updating == 0 )
-    {
-        send_pic(_framebuffer);
-    }
-}