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105 lines
1.9 KiB
105 lines
1.9 KiB
/** @file squeak1.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 "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 "mmelody.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 TUNE_TASK_RATE 100
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#define TUNE_BPM_RATE 200
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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 mmelody_t melody;
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static mmelody_obj_t melody_info;
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static tweeter_obj_t tweeter_info;
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static const char tune1[] =
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{
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#include "imperial_march.mmel"
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" >"
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};
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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 tune_task_init (void)
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{
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melody = mmelody_init (&melody_info, TUNE_TASK_RATE,
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(mmelody_callback_t) tweeter_note_play, tweeter);
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mmelody_speed_set (melody, TUNE_BPM_RATE);
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mmelody_play (melody, tune1);
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}
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static void tune_task (__unused__ void *data)
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{
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mmelody_update (melody);
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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 = tune_task, .period = TASK_RATE / TUNE_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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tune_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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