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- #ifndef NRF_TWI_H__
- #define NRF_TWI_H__
- #include <nrfx.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- typedef enum
- {
- NRF_TWI_TASK_STARTRX = offsetof(NRF_TWI_Type, TASKS_STARTRX),
- NRF_TWI_TASK_STARTTX = offsetof(NRF_TWI_Type, TASKS_STARTTX),
- NRF_TWI_TASK_STOP = offsetof(NRF_TWI_Type, TASKS_STOP),
- NRF_TWI_TASK_SUSPEND = offsetof(NRF_TWI_Type, TASKS_SUSPEND),
- NRF_TWI_TASK_RESUME = offsetof(NRF_TWI_Type, TASKS_RESUME)
- } nrf_twi_task_t;
- typedef enum
- {
- NRF_TWI_EVENT_STOPPED = offsetof(NRF_TWI_Type, EVENTS_STOPPED),
- NRF_TWI_EVENT_RXDREADY = offsetof(NRF_TWI_Type, EVENTS_RXDREADY),
- NRF_TWI_EVENT_TXDSENT = offsetof(NRF_TWI_Type, EVENTS_TXDSENT),
- NRF_TWI_EVENT_ERROR = offsetof(NRF_TWI_Type, EVENTS_ERROR),
- NRF_TWI_EVENT_BB = offsetof(NRF_TWI_Type, EVENTS_BB),
- NRF_TWI_EVENT_SUSPENDED = offsetof(NRF_TWI_Type, EVENTS_SUSPENDED)
- } nrf_twi_event_t;
- typedef enum
- {
- NRF_TWI_SHORT_BB_SUSPEND_MASK = TWI_SHORTS_BB_SUSPEND_Msk,
- NRF_TWI_SHORT_BB_STOP_MASK = TWI_SHORTS_BB_STOP_Msk,
- NRF_TWI_ALL_SHORTS_MASK = TWI_SHORTS_BB_SUSPEND_Msk |
- TWI_SHORTS_BB_STOP_Msk
- } nrf_twi_short_mask_t;
- typedef enum
- {
- NRF_TWI_INT_STOPPED_MASK = TWI_INTENSET_STOPPED_Msk,
- NRF_TWI_INT_RXDREADY_MASK = TWI_INTENSET_RXDREADY_Msk,
- NRF_TWI_INT_TXDSENT_MASK = TWI_INTENSET_TXDSENT_Msk,
- NRF_TWI_INT_ERROR_MASK = TWI_INTENSET_ERROR_Msk,
- NRF_TWI_INT_BB_MASK = TWI_INTENSET_BB_Msk,
- NRF_TWI_INT_SUSPENDED_MASK = TWI_INTENSET_SUSPENDED_Msk,
- NRF_TWI_ALL_INTS_MASK = TWI_INTENSET_STOPPED_Msk |
- TWI_INTENSET_RXDREADY_Msk |
- TWI_INTENSET_TXDSENT_Msk |
- TWI_INTENSET_ERROR_Msk |
- TWI_INTENSET_BB_Msk |
- TWI_INTENSET_SUSPENDED_Msk
- } nrf_twi_int_mask_t;
- typedef enum
- {
- NRF_TWI_ERROR_ADDRESS_NACK = TWI_ERRORSRC_ANACK_Msk,
- NRF_TWI_ERROR_DATA_NACK = TWI_ERRORSRC_DNACK_Msk,
- NRF_TWI_ERROR_OVERRUN = TWI_ERRORSRC_OVERRUN_Msk
-
- } nrf_twi_error_t;
- typedef enum
- {
- NRF_TWI_FREQ_100K = TWI_FREQUENCY_FREQUENCY_K100,
- NRF_TWI_FREQ_250K = TWI_FREQUENCY_FREQUENCY_K250,
- NRF_TWI_FREQ_400K = TWI_FREQUENCY_FREQUENCY_K400
- } nrf_twi_frequency_t;
- __STATIC_INLINE void nrf_twi_task_trigger(NRF_TWI_Type * p_reg,
- nrf_twi_task_t task);
- __STATIC_INLINE uint32_t * nrf_twi_task_address_get(NRF_TWI_Type * p_reg,
- nrf_twi_task_t task);
- __STATIC_INLINE void nrf_twi_event_clear(NRF_TWI_Type * p_reg,
- nrf_twi_event_t event);
- __STATIC_INLINE bool nrf_twi_event_check(NRF_TWI_Type * p_reg,
- nrf_twi_event_t event);
- __STATIC_INLINE uint32_t * nrf_twi_event_address_get(NRF_TWI_Type * p_reg,
- nrf_twi_event_t event);
- __STATIC_INLINE void nrf_twi_shorts_enable(NRF_TWI_Type * p_reg,
- uint32_t mask);
- __STATIC_INLINE void nrf_twi_shorts_disable(NRF_TWI_Type * p_reg,
- uint32_t mask);
- __STATIC_INLINE void nrf_twi_int_enable(NRF_TWI_Type * p_reg,
- uint32_t mask);
- __STATIC_INLINE void nrf_twi_int_disable(NRF_TWI_Type * p_reg,
- uint32_t mask);
- __STATIC_INLINE bool nrf_twi_int_enable_check(NRF_TWI_Type * p_reg,
- nrf_twi_int_mask_t twi_int);
- __STATIC_INLINE void nrf_twi_enable(NRF_TWI_Type * p_reg);
- __STATIC_INLINE void nrf_twi_disable(NRF_TWI_Type * p_reg);
- __STATIC_INLINE void nrf_twi_pins_set(NRF_TWI_Type * p_reg,
- uint32_t scl_pin,
- uint32_t sda_pin);
- __STATIC_INLINE uint32_t nrf_twi_scl_pin_get(NRF_TWI_Type * p_reg);
- __STATIC_INLINE uint32_t nrf_twi_sda_pin_get(NRF_TWI_Type * p_reg);
- __STATIC_INLINE void nrf_twi_frequency_set(NRF_TWI_Type * p_reg,
- nrf_twi_frequency_t frequency);
- __STATIC_INLINE uint32_t nrf_twi_errorsrc_get_and_clear(NRF_TWI_Type * p_reg);
- __STATIC_INLINE void nrf_twi_address_set(NRF_TWI_Type * p_reg, uint8_t address);
- __STATIC_INLINE uint8_t nrf_twi_rxd_get(NRF_TWI_Type * p_reg);
- __STATIC_INLINE void nrf_twi_txd_set(NRF_TWI_Type * p_reg, uint8_t data);
- __STATIC_INLINE void nrf_twi_shorts_set(NRF_TWI_Type * p_reg,
- uint32_t mask);
- #ifndef SUPPRESS_INLINE_IMPLEMENTATION
- __STATIC_INLINE void nrf_twi_task_trigger(NRF_TWI_Type * p_reg,
- nrf_twi_task_t task)
- {
- *((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)task)) = 0x1UL;
- }
- __STATIC_INLINE uint32_t * nrf_twi_task_address_get(NRF_TWI_Type * p_reg,
- nrf_twi_task_t task)
- {
- return (uint32_t *)((uint8_t *)p_reg + (uint32_t)task);
- }
- __STATIC_INLINE void nrf_twi_event_clear(NRF_TWI_Type * p_reg,
- nrf_twi_event_t event)
- {
- *((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event)) = 0x0UL;
- #if __CORTEX_M == 0x04
- volatile uint32_t dummy = *((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event));
- (void)dummy;
- #endif
- }
- __STATIC_INLINE bool nrf_twi_event_check(NRF_TWI_Type * p_reg,
- nrf_twi_event_t event)
- {
- return (bool)*(volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event);
- }
- __STATIC_INLINE uint32_t * nrf_twi_event_address_get(NRF_TWI_Type * p_reg,
- nrf_twi_event_t event)
- {
- return (uint32_t *)((uint8_t *)p_reg + (uint32_t)event);
- }
- __STATIC_INLINE void nrf_twi_shorts_enable(NRF_TWI_Type * p_reg,
- uint32_t mask)
- {
- p_reg->SHORTS |= mask;
- }
- __STATIC_INLINE void nrf_twi_shorts_disable(NRF_TWI_Type * p_reg,
- uint32_t mask)
- {
- p_reg->SHORTS &= ~(mask);
- }
- __STATIC_INLINE void nrf_twi_int_enable(NRF_TWI_Type * p_reg,
- uint32_t mask)
- {
- p_reg->INTENSET = mask;
- }
- __STATIC_INLINE void nrf_twi_int_disable(NRF_TWI_Type * p_reg,
- uint32_t mask)
- {
- p_reg->INTENCLR = mask;
- }
- __STATIC_INLINE bool nrf_twi_int_enable_check(NRF_TWI_Type * p_reg,
- nrf_twi_int_mask_t twi_int)
- {
- return (bool)(p_reg->INTENSET & twi_int);
- }
- __STATIC_INLINE void nrf_twi_enable(NRF_TWI_Type * p_reg)
- {
- p_reg->ENABLE = (TWI_ENABLE_ENABLE_Enabled << TWI_ENABLE_ENABLE_Pos);
- }
- __STATIC_INLINE void nrf_twi_disable(NRF_TWI_Type * p_reg)
- {
- p_reg->ENABLE = (TWI_ENABLE_ENABLE_Disabled << TWI_ENABLE_ENABLE_Pos);
- }
- __STATIC_INLINE void nrf_twi_pins_set(NRF_TWI_Type * p_reg,
- uint32_t scl_pin,
- uint32_t sda_pin)
- {
- #if defined(TWI_PSEL_SCL_CONNECT_Pos)
- p_reg->PSEL.SCL = scl_pin;
- #else
- p_reg->PSELSCL = scl_pin;
- #endif
- #if defined(TWI_PSEL_SDA_CONNECT_Pos)
- p_reg->PSEL.SDA = sda_pin;
- #else
- p_reg->PSELSDA = sda_pin;
- #endif
- }
- __STATIC_INLINE uint32_t nrf_twi_scl_pin_get(NRF_TWI_Type * p_reg)
- {
- #if defined(TWI_PSEL_SCL_CONNECT_Pos)
- return p_reg->PSEL.SCL;
- #else
- return p_reg->PSELSCL;
- #endif
- }
- __STATIC_INLINE uint32_t nrf_twi_sda_pin_get(NRF_TWI_Type * p_reg)
- {
- #if defined(TWI_PSEL_SDA_CONNECT_Pos)
- return p_reg->PSEL.SDA;
- #else
- return p_reg->PSELSDA;
- #endif
- }
- __STATIC_INLINE void nrf_twi_frequency_set(NRF_TWI_Type * p_reg,
- nrf_twi_frequency_t frequency)
- {
- p_reg->FREQUENCY = frequency;
- }
- __STATIC_INLINE uint32_t nrf_twi_errorsrc_get_and_clear(NRF_TWI_Type * p_reg)
- {
- uint32_t error_source = p_reg->ERRORSRC;
-
- p_reg->ERRORSRC = error_source;
- return error_source;
- }
- __STATIC_INLINE void nrf_twi_address_set(NRF_TWI_Type * p_reg, uint8_t address)
- {
- p_reg->ADDRESS = address;
- }
- __STATIC_INLINE uint8_t nrf_twi_rxd_get(NRF_TWI_Type * p_reg)
- {
- return (uint8_t)p_reg->RXD;
- }
- __STATIC_INLINE void nrf_twi_txd_set(NRF_TWI_Type * p_reg, uint8_t data)
- {
- p_reg->TXD = data;
- }
- __STATIC_INLINE void nrf_twi_shorts_set(NRF_TWI_Type * p_reg,
- uint32_t mask)
- {
- p_reg->SHORTS = mask;
- }
- #endif
- #ifdef __cplusplus
- }
- #endif
- #endif
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