77 lines
1.1 KiB
C
77 lines
1.1 KiB
C
#ifndef PWRNOISE_H
|
|
#define PWRNOISE_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
typedef struct {
|
|
bool enable;
|
|
bool am;
|
|
|
|
uint16_t period;
|
|
uint16_t period_counter;
|
|
|
|
uint8_t octave;
|
|
uint16_t octave_counter;
|
|
|
|
uint8_t tapa;
|
|
uint8_t tapb;
|
|
bool tapb_enable;
|
|
|
|
uint16_t lfsr;
|
|
uint8_t vol;
|
|
|
|
uint8_t out_latch;
|
|
uint8_t prev;
|
|
} noise_channel_t;
|
|
|
|
typedef struct {
|
|
bool enable;
|
|
uint8_t flags;
|
|
|
|
uint16_t period;
|
|
uint16_t period_counter;
|
|
|
|
uint8_t octave;
|
|
uint16_t octave_counter;
|
|
|
|
uint8_t alength;
|
|
uint8_t blength;
|
|
uint16_t a;
|
|
uint16_t b;
|
|
bool portion;
|
|
|
|
uint8_t aoffset;
|
|
uint8_t boffset;
|
|
|
|
uint8_t accum;
|
|
uint8_t vol;
|
|
|
|
uint8_t out_latch;
|
|
uint8_t prev;
|
|
} slope_channel_t;
|
|
|
|
typedef struct {
|
|
uint8_t flags;
|
|
uint8_t gpioa;
|
|
uint8_t gpiob;
|
|
|
|
noise_channel_t n1;
|
|
noise_channel_t n2;
|
|
noise_channel_t n3;
|
|
slope_channel_t s;
|
|
} power_noise_t;
|
|
|
|
void pwrnoise_reset(power_noise_t *pn);
|
|
void pwrnoise_step(power_noise_t *pn, uint16_t cycles, int16_t *left, int16_t *right);
|
|
void pwrnoise_write(power_noise_t *pn, uint8_t reg, uint8_t val);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif |