betty/display.c

   1 /*
   2  * display.c - handling the display
   3  *
   4  * author: hackbard@hackdaworld.org
   5  *
   6  */
   7
   8 #include "display.h"
   9 #include "system.h"
  10 #include "default_logo.h"
  11 #include "uart.h"
  12
  13 /*
  14  * functions
  15  */
  16
  17 void display_clear_screen(void) {
  18
  19         u32 cnt;
  20
  21         DISPLAY_SET_PAGE_ADDR(0);
  22         DISPLAY_SET_C_ADDR(0);
  23
  24         for(cnt=0;cnt<DISPLAY_RAM_CONTENT;cnt++)
  25                 DISPLAY_DATA=0x00;
  26 }
  27
  28 void display_init(void) {
  29
  30         DISPLAY_EXIT_POWER_SAVE;
  31
  32         DISPLAY_SOFT_RESET;
  33         pause(0xffffff);
  34
  35         DISPLAY_START_OSCILLATOR;
  36
  37         DISPLAY_SET_REGULATOR(7);
  38
  39         DISPLAY_SET_CONTRAST(0x38);
  40
  41         DISPLAY_SET_CONV_FACTOR(0x01);
  42
  43         DISPLAY_SET_UW_CORNER(0x1c,0x0a);
  44         DISPLAY_SET_LW_CORNER(0x75,0x81);
  45
  46         DISPLAY_SET_PWM_FRC(0,0);
  47
  48         DISPLAY_SET_WHITE(0,0,0,0);
  49         DISPLAY_SET_LGRAY(4,4,4,4);
  50         DISPLAY_SET_DGRAY(6,6,6,6);
  51         DISPLAY_SET_BLACK(9,9,9,9);
  52
  53         DISPLAY_SET_SEGMENT_REMAP_00H;
  54         DISPLAY_SET_COM_ODIR_REMAPPED;
  55
  56         DISPLAY_SET_POWER(DISPLAY_REGULATOR|DISPLAY_OPAMP);
  57         pause(0xffffff);
  58         DISPLAY_SET_POWER(DISPLAY_V_BOOST|DISPLAY_REGULATOR|DISPLAY_OPAMP);
  59
  60         DISPLAY_RAM_CONTENTS_ON;
  61
  62         DISPLAY_NORMAL;
  63
  64         display_clear_screen();
  65
  66         DISPLAY_SET_ON;
  67 }
  68
  69 void display_load_logo(u8 *src) {
  70
  71         u32 cnt;
  72         u8 *s;
  73
  74         s=src;
  75         if(s==0)
  76                 s=default_logo;
  77
  78         DISPLAY_SET_PAGE_ADDR(0);
  79         DISPLAY_SET_C_ADDR(0);
  80
  81         for(cnt=0;cnt<DISPLAY_RAM_CONTENT;cnt++)
  82                 DISPLAY_DATA=s[cnt];
  83 }
  84
  85 void display_bl_init(void) {
  86
  87         IODIR0|=(1<<4);
  88         IOSET0=(1<<4);  // off by default
  89 }
  90
  91 void display_bl_toggle(void) {
  92
  93         if(IOPIN0&(1<<4))
  94                 IOCLR0=(1<<4);
  95         else
  96                 IOSET0=(1<<4);
  97 }
  98
  99 void display_bl_on(void) {
 100
 101         IOCLR0=(1<<4);
 102 }
 103
 104 void display_bl_off(void) {
 105
 106         IOSET0=(1<<4);
 107 }
 108