git.rot13.org Git - digitaldcpower/blob - test_lcd.c

   1 /*********************************************
   2 * vim: set sw=8 ts=8 si :
   3 * Author: Guido Socher, Copyright: GPL
   4 * This is a test program which will write "LCD works"
   5 * on the LCD display.
   6 * This program is also used to test the keypad. It
   7 * displays the button last pressed.
   8 *
   9 * See http://www.tuxgraphics.org/electronics/
  10 *
  11 * Chip type           : ATMEGA8
  12 * Clock frequency     : Internal clock 8 Mhz
  13 *********************************************/
  14 #include <avr/io.h>
  15 #include <inttypes.h>
  16 #define F_CPU 8000000UL  // 8 MHz
  17 #include <util/delay.h>
  18 #include "lcd.h"
  19 #include "kbd.h"
  20 #include <stdlib.h>
  21 #include <string.h>
  22
  23
  24 void delay_ms(uint16_t ms)
  25 /* delay for a minimum of <ms> */
  26 {
  27         // we use a calibrated macro. This is more
  28         // accurate and not so much compiler dependent
  29         // as self made code.
  30         while(ms){
  31                 _delay_ms(0.96);
  32                 ms--;
  33         }
  34 }
  35
  36
  37 int main(void)
  38 {
  39         int16_t cnt;
  40         uint8_t i=0;
  41         lcd_init();
  42         lcd_clrscr();
  43         lcd_puts("LCD works");
  44         init_kbd();
  45         delay_ms(500);
  46         while (1) {
  47                 i++;
  48                 cnt=1;
  49                 check_u_button(&cnt);
  50                 if (cnt>1){
  51                         lcd_clrscr();
  52                         lcd_puts_P("U+ pressed");
  53                         i=0;
  54                 }
  55                 if (cnt<1){
  56                         lcd_clrscr();
  57                         lcd_puts_P("U- pressed");
  58                         i=0;
  59                 }
  60                 cnt=1;
  61                 check_i_button(&cnt);
  62                 if (cnt>1){
  63                         lcd_clrscr();
  64                         lcd_puts_P("I+ pressed");
  65                         i=0;
  66                 }
  67                 if (cnt<1){
  68                         lcd_clrscr();
  69                         lcd_puts_P("I- pressed");
  70                         i=0;
  71                 }
  72                 if (check_store_button()){
  73                         lcd_clrscr();
  74                         lcd_puts_P("store");
  75                         lcd_gotoxy(0,1);
  76                         lcd_puts_P("pressed");
  77                         i=0;
  78                 }
  79                 delay_ms(10);
  80                 if (i>150){
  81                         lcd_clrscr();
  82                         lcd_puts_P("press");
  83                         lcd_gotoxy(0,1);
  84                         lcd_puts_P("a button");
  85                         i=0;
  86                 }
  87
  88         }
  89         return(0);
  90 }
  91