git.gag.com Git - fw/altos/blob - src/stm-vga/ao_demo.c

   1 /*
   2  * Copyright © 2011 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 #include "ao.h"
  20 #include <ao_exti.h>
  21 #include <ao_event.h>
  22 #include <ao_quadrature.h>
  23 #include <ao_button.h>
  24 #include <ao_boot.h>
  25 #include <ao_vga.h>
  26
  27 struct ao_task ball_task;
  28
  29 #define BALL_WIDTH      5
  30 #define BALL_HEIGHT     5
  31
  32 static int      ball_x;
  33 static int      ball_y;
  34 static int      ball_dx, ball_dy;
  35
  36 uint8_t         ball_enable;
  37
  38 void
  39 ao_ball(void)
  40 {
  41         ball_dx = 1;
  42         ball_dy = 1;
  43         ball_x = 0;
  44         ball_y = 0;
  45         for (;;) {
  46                 while (!ball_enable)
  47                         ao_sleep(&ball_enable);
  48                 for (;;) {
  49                         ao_line(&ao_vga_bitmap,
  50                                 -100, -100, ball_x*2, ball_y*2,
  51                                 1, AO_XOR);
  52                         ao_text(&ao_vga_bitmap,
  53                                 ball_x, ball_y - 10,
  54                                 "Hello, Bdale!",
  55                                 1, AO_XOR);
  56                         ao_rect(&ao_vga_bitmap,
  57                                 ball_x, ball_y,
  58                                 BALL_WIDTH,
  59                                 BALL_HEIGHT,
  60                                 1,
  61                                 AO_XOR);
  62                         ao_delay(AO_MS_TO_TICKS(10));
  63                         ao_rect(&ao_vga_bitmap,
  64                                 ball_x, ball_y,
  65                                 BALL_WIDTH,
  66                                 BALL_HEIGHT,
  67                                 1,
  68                                 AO_XOR);
  69                         ao_text(&ao_vga_bitmap,
  70                                 ball_x, ball_y - 10,
  71                                 "Hello, Bdale!",
  72                                 1, AO_XOR);
  73                         ao_line(&ao_vga_bitmap,
  74                                 -100, -100, ball_x*2, ball_y*2,
  75                                 1, AO_XOR);
  76                         if (!ball_enable)
  77                                 break;
  78                         ball_x += ball_dx;
  79                         ball_y += ball_dy;
  80                         if (ball_x + BALL_WIDTH > AO_VGA_WIDTH) {
  81                                 ball_x = AO_VGA_WIDTH - BALL_WIDTH;
  82                                 ball_dx = -ball_dx;
  83                         }
  84                         if (ball_x < 0) {
  85                                 ball_x = -ball_x;
  86                                 ball_dx = -ball_dx;
  87                         }
  88                         if (ball_y + BALL_HEIGHT > AO_VGA_HEIGHT) {
  89                                 ball_y = AO_VGA_HEIGHT - BALL_HEIGHT;
  90                                 ball_dy = -ball_dy;
  91                         }
  92                         if (ball_y < 0) {
  93                                 ball_y = -ball_y;
  94                                 ball_dy = -ball_dy;
  95                         }
  96                 }
  97         }
  98 }
  99
 100 static void
 101 ao_fb_init(void)
 102 {
 103         ao_rect(&ao_vga_bitmap,
 104                 0, 0, AO_VGA_WIDTH, AO_VGA_HEIGHT,
 105                 1, AO_COPY);
 106
 107         ao_rect(&ao_vga_bitmap,
 108                 10, 10, 10, 10,
 109                 0, AO_COPY);
 110
 111         ao_rect(&ao_vga_bitmap,
 112                 AO_VGA_WIDTH - 20, 10, 10, 10,
 113                 0, AO_COPY);
 114
 115         ao_rect(&ao_vga_bitmap,
 116                 10, AO_VGA_HEIGHT - 20, 10, 10,
 117                 0, AO_COPY);
 118
 119         ao_rect(&ao_vga_bitmap,
 120                 AO_VGA_WIDTH - 20, AO_VGA_HEIGHT - 20, 10, 10,
 121                 0, AO_COPY);
 122
 123         ao_text(&ao_vga_bitmap,
 124                 20, 100,
 125                 "Hello, Bdale!",
 126                 0, AO_COPY);
 127
 128         ao_text(&ao_vga_bitmap,
 129                 1, ao_font.ascent,
 130                 "UL",
 131                 0, AO_COPY);
 132
 133         ao_text(&ao_vga_bitmap,
 134                 1, AO_VGA_HEIGHT - ao_font.descent,
 135                 "BL",
 136                 0, AO_COPY);
 137 }
 138
 139 static void
 140 ao_video_toggle(void)
 141 {
 142         ao_cmd_decimal();
 143         if (ao_cmd_lex_i)
 144                 ao_fb_init();
 145         ao_vga_enable(ao_cmd_lex_i);
 146 }
 147
 148 static void
 149 ao_ball_toggle(void)
 150 {
 151         ao_cmd_decimal();
 152         ball_enable = ao_cmd_lex_i;
 153         ao_wakeup(&ball_enable);
 154 }
 155
 156 __code struct ao_cmds ao_demo_cmds[] = {
 157         { ao_video_toggle, "V\0Toggle video" },
 158         { ao_ball_toggle, "B\0Toggle ball" },
 159         { 0, NULL }
 160 };
 161
 162 int
 163 main(void)
 164 {
 165         ao_clock_init();
 166
 167         ao_task_init();
 168
 169         ao_led_init(LEDS_AVAILABLE);
 170         ao_led_on(AO_LED_GREEN);
 171         ao_led_off(AO_LED_BLUE);
 172         ao_timer_init();
 173         ao_dma_init();
 174         ao_cmd_init();
 175         ao_vga_init();
 176         ao_usb_init();
 177
 178         ao_add_task(&ball_task, ao_ball, "ball");
 179         ao_cmd_register(&ao_demo_cmds[0]);
 180
 181         ao_start_scheduler();
 182         return 0;
 183 }