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69 lines
1.1 KiB
69 lines
1.1 KiB
/** @file updown1.c
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@author M.P. Hayes
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@date 28 Aug 2008
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@defgroup updown1 Simple counting program using button.
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*/
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#include "system.h"
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#include "pacer.h"
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#include "pio.h"
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#include "tinygl.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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static void show_count (uint8_t count)
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{
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char buffer[2];
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/* FIXME! */
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buffer[0] = count + '0';
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buffer[1] = 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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bool state;
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bool prev_state;
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uint8_t count = 0;
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system_init ();
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tinygl_init (LOOP_RATE);
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tinygl_font_set (&font5x7_1);
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pio_config_set (BUTTON1_PIO, PIO_INPUT);
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state = !pio_input_get (BUTTON1_PIO);
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prev_state = state;
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show_count (count);
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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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state = pio_input_get (BUTTON1_PIO);
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if (state && !prev_state)
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{
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count++;
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show_count (count);
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}
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prev_state = state;
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tinygl_update ();
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}
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return 0;
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}
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