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82 lines
1.5 KiB
82 lines
1.5 KiB
/** @file chooser.c
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@author M. P. Hayes, UCECE
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@date 24 August 2009
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@brief Homework winner chooser
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@defgroup chooser Homework winner chooser.
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*/
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#include "system.h"
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#include "tinygl.h"
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#include "pacer.h"
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#include "navswitch.h"
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#include "../fonts/font5x7_1.h"
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/* Define polling rate in Hz. */
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#define LOOP_RATE 300
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/* Define text update rate (characters per 10 s). */
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#define MESSAGE_RATE 10
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static void show_num (char ch, uint8_t count)
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{
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char buffer[4];
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/* FIXME! */
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buffer[0] = ch;
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buffer[1] = count / 10 + '0';
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buffer[2] = count % 10 + '0';
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buffer[3] = 0;
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tinygl_text (buffer);
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}
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int main (void)
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{
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int count = 0;
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system_init ();
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tinygl_init (LOOP_RATE);
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navswitch_init ();
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tinygl_font_set (&font5x7_1);
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tinygl_text_speed_set (MESSAGE_RATE);
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tinygl_text_mode_set (TINYGL_TEXT_MODE_SCROLL);
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tinygl_text ("NUM?");
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pacer_init (LOOP_RATE);
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/* Paced loop. */
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while (1)
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{
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/* Wait for next tick. */
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pacer_wait ();
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tinygl_update ();
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navswitch_update ();
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if (navswitch_push_event_p (NAVSWITCH_PUSH))
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{
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show_num ('T', count);
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}
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else if (navswitch_push_event_p (NAVSWITCH_WEST))
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{
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if (count > 0)
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count--;
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show_num ('N', count);
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}
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else if (navswitch_push_event_p (NAVSWITCH_EAST))
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{
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count++;
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show_num ('N', count);
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}
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}
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return 0;
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}
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