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160 lines
3.2 KiB
160 lines
3.2 KiB
/** @file squeak3.c
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@author M.P. Hayes
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@date 30 Aug 2011
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*/
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#include "system.h"
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#include "button.h"
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#include "navswitch.h"
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#include "led.h"
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#include "pio.h"
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#include "task.h"
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#include "tweeter.h"
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#include "squeaker.h"
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#include "tinygl.h"
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#include "../fonts/font3x5_1.h"
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/* Connect piezo tweeter to outermost pins of UCFK4 P1 connector. */
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#define PIEZO_PIO PIO_DEFINE (PORT_D, 6)
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/* Define polling rate in Hz. */
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#define LED_TASK_RATE 2
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#define TWEETER_TASK_RATE 20000
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#define BUTTON_TASK_RATE 10
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#define DISPLAY_TASK_RATE 200
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/* Define text update rate (characters per 10 s). */
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#define MESSAGE_RATE 10
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#define MIDI_NOTE_C4 60
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static tweeter_scale_t scale_table[] = TWEETER_SCALE_TABLE (TWEETER_TASK_RATE);
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static tweeter_t tweeter;
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static tweeter_obj_t tweeter_info;
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static char *note_names[] = {"C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"};
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static uint8_t note = 0;
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static void led_flash_task_init (void)
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{
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led_init ();
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}
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static void led_flash_task (__unused__ void *data)
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{
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static uint8_t state = 0;
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led_set (LED1, state);
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state = !state;
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}
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static void tweeter_task_init (void)
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{
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tweeter = tweeter_init (&tweeter_info, TWEETER_TASK_RATE, scale_table);
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pio_config_set (PIEZO_PIO, PIO_OUTPUT_LOW);
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}
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static void tweeter_task (__unused__ void *data)
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{
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pio_output_set (PIEZO_PIO, tweeter_update (tweeter));
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}
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static void button_task_init (void)
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{
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button_init ();
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}
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static void display_note (void)
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{
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tinygl_clear ();
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tinygl_text (note_names[note]);
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}
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static void button_task (__unused__ void *data)
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{
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button_update ();
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navswitch_update ();
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if (navswitch_push_event_p (NAVSWITCH_NORTH))
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{
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if (note < ARRAY_SIZE (note_names) - 1)
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note++;
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else
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note = 0;
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display_note ();
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}
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if (navswitch_push_event_p (NAVSWITCH_SOUTH))
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{
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if (note > 0)
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note--;
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else
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note = ARRAY_SIZE (note_names) - 1;
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display_note ();
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}
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if (button_push_event_p (BUTTON1)
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|| navswitch_push_event_p (NAVSWITCH_PUSH))
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{
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tweeter_note_play (tweeter, note + MIDI_NOTE_C4, 127);
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}
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if (button_release_event_p (BUTTON1)
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|| navswitch_release_event_p (NAVSWITCH_PUSH))
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{
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tweeter_note_play (tweeter, 0, 127);
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}
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}
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static void display_task_init (void)
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{
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tinygl_init (DISPLAY_TASK_RATE);
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tinygl_font_set (&font3x5_1);
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tinygl_text_speed_set (MESSAGE_RATE);
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tinygl_text_mode_set (TINYGL_TEXT_MODE_ROTATE_STEP);
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display_note ();
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}
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static void display_task (__unused__ void *data)
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{
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tinygl_update ();
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}
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int main (void)
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{
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task_t tasks[] =
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{
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{.func = tweeter_task, .period = TASK_RATE / TWEETER_TASK_RATE, .data = 0},
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{.func = led_flash_task, .period = TASK_RATE / LED_TASK_RATE, .data = 0},
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{.func = button_task, .period = TASK_RATE / BUTTON_TASK_RATE, .data = 0},
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{.func = display_task, .period = TASK_RATE / DISPLAY_TASK_RATE, .data = 0},
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};
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system_init ();
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led_flash_task_init ();
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tweeter_task_init ();
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button_task_init ();
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display_task_init ();
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task_schedule (tasks, ARRAY_SIZE (tasks));
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return 0;
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}
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