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 <avr/pgmspace.h>
  16 #include <inttypes.h>
  17 #define F_CPU 8000000UL  // 8 MHz
  18 #include <util/delay.h>
  19 #include "lcd.h"
  20 #include "kbd.h"
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24
  25 void delay_ms(uint16_t ms)
  26 /* delay for a minimum of <ms> */
  27 {
  28         // we use a calibrated macro. This is more
  29         // accurate and not so much compiler dependent
  30         // as self made code.
  31         while(ms){
  32                 _delay_ms(0.96);
  33                 ms--;
  34         }
  35 }
  36
  37
  38 int main(void)
  39 {
  40         int16_t cnt;
  41         uint8_t i=0;
  42         lcd_init();
  43         lcd_clrscr();
  44         lcd_puts("LCD works");
  45         init_kbd();
  46         delay_ms(500);
  47         while (1) {
  48                 i++;
  49                 cnt=1;
  50                 check_u_button(&cnt);
  51                 if (cnt>1){
  52                         lcd_clrscr();
  53                         lcd_puts_p(PSTR("U+ pressed"));
  54                         i=0;
  55                 }
  56                 if (cnt<1){
  57                         lcd_clrscr();
  58                         lcd_puts_p(PSTR("U- pressed"));
  59                         i=0;
  60                 }
  61                 cnt=1;
  62                 check_i_button(&cnt);
  63                 if (cnt>1){
  64                         lcd_clrscr();
  65                         lcd_puts_p(PSTR("I+ pressed"));
  66                         i=0;
  67                 }
  68                 if (cnt<1){
  69                         lcd_clrscr();
  70                         lcd_puts_p(PSTR("I- pressed"));
  71                         i=0;
  72                 }
  73                 if (check_store_button()){
  74                         lcd_clrscr();
  75                         lcd_puts_p(PSTR("store"));
  76                         lcd_gotoxy(0,1);
  77                         lcd_puts_p(PSTR("pressed"));
  78                         i=0;
  79                 }
  80                 delay_ms(10);
  81                 if (i>150){
  82                         lcd_clrscr();
  83                         lcd_puts_p(PSTR("press"));
  84                         lcd_gotoxy(0,1);
  85                         lcd_puts_p(PSTR("a button"));
  86                         i=0;
  87                 }
  88
  89         }
  90         return(0);
  91 }
  92