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- #ifndef NRFX_PDM_H__
- #define NRFX_PDM_H__
- #include <nrfx.h>
- #include <hal/nrf_pdm.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- #define NRFX_PDM_MAX_BUFFER_SIZE 32767
- typedef enum
- {
- NRFX_PDM_NO_ERROR = 0,
- NRFX_PDM_ERROR_OVERFLOW = 1
- } nrfx_pdm_error_t;
- typedef struct
- {
- bool buffer_requested;
- int16_t * buffer_released;
- nrfx_pdm_error_t error;
- } nrfx_pdm_evt_t;
- typedef struct
- {
- nrf_pdm_mode_t mode;
- nrf_pdm_edge_t edge;
- uint8_t pin_clk;
- uint8_t pin_din;
- nrf_pdm_freq_t clock_freq;
- nrf_pdm_gain_t gain_l;
- nrf_pdm_gain_t gain_r;
- uint8_t interrupt_priority;
- } nrfx_pdm_config_t;
- #define NRFX_PDM_DEFAULT_CONFIG(_pin_clk, _pin_din) \
- { \
- .mode = (nrf_pdm_mode_t)NRFX_PDM_CONFIG_MODE, \
- .edge = (nrf_pdm_edge_t)NRFX_PDM_CONFIG_EDGE, \
- .pin_clk = _pin_clk, \
- .pin_din = _pin_din, \
- .clock_freq = (nrf_pdm_freq_t)NRFX_PDM_CONFIG_CLOCK_FREQ, \
- .gain_l = NRF_PDM_GAIN_DEFAULT, \
- .gain_r = NRF_PDM_GAIN_DEFAULT, \
- .interrupt_priority = NRFX_PDM_CONFIG_IRQ_PRIORITY \
- }
- typedef void (*nrfx_pdm_event_handler_t)(nrfx_pdm_evt_t const * const p_evt);
- nrfx_err_t nrfx_pdm_init(nrfx_pdm_config_t const * p_config,
- nrfx_pdm_event_handler_t event_handler);
- void nrfx_pdm_uninit(void);
- __STATIC_INLINE uint32_t nrfx_pdm_task_address_get(nrf_pdm_task_t task)
- {
- return nrf_pdm_task_address_get(task);
- }
- __STATIC_INLINE bool nrfx_pdm_enable_check(void)
- {
- return nrf_pdm_enable_check();
- }
- nrfx_err_t nrfx_pdm_start(void);
- nrfx_err_t nrfx_pdm_stop(void);
- nrfx_err_t nrfx_pdm_buffer_set(int16_t * buffer, uint16_t buffer_length);
- void nrfx_pdm_irq_handler(void);
- #ifdef __cplusplus
- }
- #endif
- #endif
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