sound_task.h

Go to the documentation of this file.

 
 
#ifndef INC_SOUND_TASK_H_
#define INC_SOUND_TASK_H_
 
#include <stdint.h> // Allows use of standard integer types
#include "stm32f4xx_hal.h"

typedef struct SoundTask SoundTask;
typedef void (*sound_fcn_t)(SoundTask *sound_task);
 
#define SAMPLE_RATE   44100U                    
#define PWM_FREQ      88200U                    
#define STEP_RATIO    (PWM_FREQ / SAMPLE_RATE)  
 
extern const int16_t *audio_buf_ptr;               
extern volatile uint32_t audio_buf_len;        
 
extern volatile uint32_t sample_index;          
extern volatile uint8_t  pwm_div_count;            
extern volatile uint32_t playing;                
 

struct SoundTask
{
    int32_t             state;                 
    int32_t             num_states;               
    int32_t             laser_snd;             
    int32_t             hit_snd;             
    int32_t             start_snd;             
    int32_t             win_snd;             
    uint32_t            chan;                   
    TIM_HandleTypeDef   *htim;                  
 
    sound_fcn_t      state_list[];         
};

void sound_task_run(SoundTask *sound_task);
 
void sound_task_state_0_init(SoundTask *sound_task);
 
void sound_task_state_1_wait(SoundTask *sound_task);
void sound_task_state_2_laser(SoundTask *sound_task);
void sound_task_state_3_hit(SoundTask *sound_task);
void sound_task_state_4_win(SoundTask *sound_task);
void sound_task_state_5_start(SoundTask *sound_task);
 
void sound_task_state_6_stop(SoundTask *sound_task);
 
 
#endif /* INC_SOUND_TASK_H_ */