terminal/terminal.ino

   1 #include <LiquidCrystal.h>
   2
   3 #include "button.h"
   4 #include "lcd.h"
   5 #include "leds.h"
   6 #include "term.h"
   7
   8 struct terminal term;
   9
  10 char message[] =
  11         "Beste Mart, van harte gefeliciteerd! \x01\x00\r\n"
  12         "Hier een herprogrammeerbare terminal. ";
  13
  14 void setup()
  15 {
  16         Serial.begin(115200);
  17
  18         lcd_setup();
  19         leds_setup();
  20         button_setup();
  21
  22         for (byte i = 0; i < ROWS * COLS; i++)
  23                 term.contents[i] = ' ';
  24
  25         for (byte i = 0; i < sizeof(message) - 1; i++)
  26                 write(&term, message[i]);
  27
  28         leds.a = LED_GRN | LED_BLINK;
  29         leds.b = LED_RED | LED_BLINK;
  30         leds.c = LED_GRN | LED_BLINK;
  31         leds.d = LED_RED | LED_BLINK;
  32 }
  33
  34 enum read_state {
  35         S_DEFAULT,
  36         S_LED,
  37         S_BACKLIGHT
  38 };
  39 enum read_state read_state;
  40
  41 void handle_character(char c)
  42 {
  43         switch (read_state) {
  44                 case S_DEFAULT:
  45                         switch (c) {
  46                                 case '\x11':
  47                                         read_state = S_LED;
  48                                         break;
  49                                 case '\x12':
  50                                         read_state = S_BACKLIGHT;
  51                                         break;
  52                                 default:
  53                                         write(&term, c);
  54                                         break;
  55                         }
  56                         break;
  57
  58                 case S_LED:
  59                         switch (c & 0x30) {
  60                                 case 0x00: leds.a = c & 0x0f; break;
  61                                 case 0x10: leds.b = c & 0x0f; break;
  62                                 case 0x20: leds.c = c & 0x0f; break;
  63                                 case 0x30: leds.d = c & 0x0f; break;
  64                         }
  65                         read_state = S_DEFAULT;
  66                         break;
  67
  68                 case S_BACKLIGHT:
  69                         bl_set((enum backlight_state) c);
  70                         read_state = S_DEFAULT;
  71                         break;
  72         }
  73 }
  74
  75 void loop()
  76 {
  77         leds_tasks();
  78         button_tasks();
  79         bl_tasks();
  80
  81         while (Serial.available())
  82                 handle_character(Serial.read());
  83 }