buzzer.h

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#ifndef BUZZER_H_
#define BUZZER_H_
 
#include "stm32h7xx_hal.h" // Use the main HAL header for type definitions
 
// --- Data Structures ---
 
typedef struct {
    uint16_t frequency;     
    uint16_t duration_ms;   
} note_t;
 
typedef struct {
    TIM_HandleTypeDef *htim;        
    uint32_t           tim_channel; 
} buzzer_t;
 
// --- Global Variables ---
 
extern buzzer_t buzzer; 
 
// --- Note and Tempo Definitions ---
 
#define REST              0       
#define NOTE_Gb5          740     
#define NOTE_D6           1175    
#define NOTE_Db6          1109    
#define NOTE_B5           988     
#define NOTE_A5           880     
 
#define TEMPO_BASE_MS     100     
#define DURATION_QUARTER  (TEMPO_BASE_MS)       
#define DURATION_EIGHTH   (TEMPO_BASE_MS / 2)   
#define DURATION_HALF     (TEMPO_BASE_MS * 2)   
// --- Function Prototypes ---
 
void buzzer_init(buzzer_t *bz, TIM_HandleTypeDef *htim, uint32_t channel);
 
void musica_maestro(buzzer_t *bz, const note_t *partition, uint16_t melody_length);
 // End of Buzzer Driver group
 
#endif /* BUZZER_H_ */