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hal_nordic/nrfx/hal/nrf_twis.h

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/*
* Copyright (c) 2015 - 2022, Nordic Semiconductor ASA
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef NRF_TWIS_H__
#define NRF_TWIS_H__
#include <nrfx.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup nrf_twis_hal TWIS HAL
* @{
* @ingroup nrf_twis
* @brief Hardware access layer for managing the Two Wire Interface Slave with EasyDMA
* (TWIS) peripheral.
*/
/**
* @brief Macro getting pointer to the structure of registers of the TWIS peripheral.
*
* @param[in] idx TWIS instance index.
*
* @return Pointer to the structure of registers of the TWIS peripheral.
*/
#define NRF_TWIS_INST_GET(idx) NRFX_CONCAT_2(NRF_TWIS, idx)
/** @brief TWIS tasks. */
typedef enum
{
NRF_TWIS_TASK_STOP = offsetof(NRF_TWIS_Type, TASKS_STOP), /**< Stop TWIS transaction. */
NRF_TWIS_TASK_SUSPEND = offsetof(NRF_TWIS_Type, TASKS_SUSPEND), /**< Suspend TWIS transaction. */
NRF_TWIS_TASK_RESUME = offsetof(NRF_TWIS_Type, TASKS_RESUME), /**< Resume TWIS transaction. */
NRF_TWIS_TASK_PREPARERX = offsetof(NRF_TWIS_Type, TASKS_PREPARERX), /**< Prepare the TWIS slave to respond to a write command. */
NRF_TWIS_TASK_PREPARETX = offsetof(NRF_TWIS_Type, TASKS_PREPARETX) /**< Prepare the TWIS slave to respond to a read command. */
} nrf_twis_task_t;
/** @brief TWIS events. */
typedef enum
{
NRF_TWIS_EVENT_STOPPED = offsetof(NRF_TWIS_Type, EVENTS_STOPPED), /**< TWIS stopped. */
NRF_TWIS_EVENT_ERROR = offsetof(NRF_TWIS_Type, EVENTS_ERROR), /**< TWIS error. */
NRF_TWIS_EVENT_RXSTARTED = offsetof(NRF_TWIS_Type, EVENTS_RXSTARTED), /**< Receive sequence started. */
NRF_TWIS_EVENT_TXSTARTED = offsetof(NRF_TWIS_Type, EVENTS_TXSTARTED), /**< Transmit sequence started. */
NRF_TWIS_EVENT_WRITE = offsetof(NRF_TWIS_Type, EVENTS_WRITE), /**< Write command received. */
NRF_TWIS_EVENT_READ = offsetof(NRF_TWIS_Type, EVENTS_READ) /**< Read command received. */
} nrf_twis_event_t;
/** @brief TWIS shortcuts. */
typedef enum
{
NRF_TWIS_SHORT_WRITE_SUSPEND_MASK = TWIS_SHORTS_WRITE_SUSPEND_Msk, /**< Shortcut between WRITE event and SUSPEND task. */
NRF_TWIS_SHORT_READ_SUSPEND_MASK = TWIS_SHORTS_READ_SUSPEND_Msk, /**< Shortcut between READ event and SUSPEND task. */
} nrf_twis_short_mask_t;
/** @brief TWIS interrupts. */
typedef enum
{
NRF_TWIS_INT_STOPPED_MASK = TWIS_INTEN_STOPPED_Msk, /**< Interrupt on STOPPED event. */
NRF_TWIS_INT_ERROR_MASK = TWIS_INTEN_ERROR_Msk, /**< Interrupt on ERROR event. */
NRF_TWIS_INT_RXSTARTED_MASK = TWIS_INTEN_RXSTARTED_Msk, /**< Interrupt on RXSTARTED event. */
NRF_TWIS_INT_TXSTARTED_MASK = TWIS_INTEN_TXSTARTED_Msk, /**< Interrupt on TXSTARTED event. */
NRF_TWIS_INT_WRITE_MASK = TWIS_INTEN_WRITE_Msk, /**< Interrupt on WRITE event. */
NRF_TWIS_INT_READ_MASK = TWIS_INTEN_READ_Msk, /**< Interrupt on READ event. */
} nrf_twis_int_mask_t;
/** @brief TWIS error source. */
typedef enum
{
NRF_TWIS_ERROR_OVERFLOW = TWIS_ERRORSRC_OVERFLOW_Msk, /**< RX buffer overflow detected, and prevented. */
NRF_TWIS_ERROR_DATA_NACK = TWIS_ERRORSRC_DNACK_Msk, /**< NACK sent after receiving a data byte. */
NRF_TWIS_ERROR_OVERREAD = TWIS_ERRORSRC_OVERREAD_Msk /**< TX buffer over-read detected, and prevented. */
} nrf_twis_error_t;
/** @brief TWIS address matching configuration. */
typedef enum
{
NRF_TWIS_CONFIG_ADDRESS0_MASK = TWIS_CONFIG_ADDRESS0_Msk, /**< Enable or disable address matching on ADDRESS[0]. */
NRF_TWIS_CONFIG_ADDRESS1_MASK = TWIS_CONFIG_ADDRESS1_Msk, /**< Enable or disable address matching on ADDRESS[1]. */
NRF_TWIS_CONFIG_ADDRESS01_MASK = TWIS_CONFIG_ADDRESS0_Msk | TWIS_CONFIG_ADDRESS1_Msk /**< Enable both address matching. */
} nrf_twis_config_addr_mask_t;
/**
* @brief Smallest variable type to hold the TWI address.
*
* Variable of the minimum size that can hold a single TWI address.
*
* @note Defined to make it simple to change if the new TWI supports for example
* 10 bit addressing mode.
*/
typedef uint8_t nrf_twis_address_t;
/**
* @brief Function for activating the specified TWIS task.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] task Task to be activated.
*/
NRF_STATIC_INLINE void nrf_twis_task_trigger(NRF_TWIS_Type * p_reg, nrf_twis_task_t task);
/**
* @brief Function for returning the address of the specified TWIS task register.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] task The specified task.
*
* @return Task address.
*/
NRF_STATIC_INLINE uint32_t nrf_twis_task_address_get(NRF_TWIS_Type const * p_reg,
nrf_twis_task_t task);
/**
* @brief Function for clearing the specified event.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] event The specified event.
*/
NRF_STATIC_INLINE void nrf_twis_event_clear(NRF_TWIS_Type * p_reg,
nrf_twis_event_t event);
/**
* @brief Function for retrieving the state of the TWIS event.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] event Event to be checked.
*
* @retval true The event has been generated.
* @retval false The event has not been generated.
*/
NRF_STATIC_INLINE bool nrf_twis_event_check(NRF_TWIS_Type const * p_reg,
nrf_twis_event_t event);
/**
* @brief Function for getting and clearing the state of the specified event.
*
* This function checks the state of the event and clears it.
*
* @param[in,out] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] event Event.
*
* @retval true The event was set.
* @retval false The event was not set.
*/
NRF_STATIC_INLINE bool nrf_twis_event_get_and_clear(NRF_TWIS_Type * p_reg,
nrf_twis_event_t event);
/**
* @brief Function for returning the address of the specified TWIS event register.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] event Event.
*
* @return Address.
*/
NRF_STATIC_INLINE uint32_t nrf_twis_event_address_get(NRF_TWIS_Type const * p_reg,
nrf_twis_event_t event);
/**
* @brief Function for setting a shortcut.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] mask Mask of shortcuts to be enabled.
*/
NRF_STATIC_INLINE void nrf_twis_shorts_enable(NRF_TWIS_Type * p_reg, uint32_t mask);
/**
* @brief Function for clearing shortcuts.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] mask Mask of shortcuts to be disabled.
*/
NRF_STATIC_INLINE void nrf_twis_shorts_disable(NRF_TWIS_Type * p_reg, uint32_t mask);
/**
* @brief Function for getting the shorts mask.
*
* Function returns shorts register.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return Flags of currently enabled shortcuts
*/
NRF_STATIC_INLINE uint32_t nrf_twis_shorts_get(NRF_TWIS_Type const * p_reg);
/**
* @brief Function for enabling the specified interrupts.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] mask Mask of interrupts to be enabled.
*/
NRF_STATIC_INLINE void nrf_twis_int_enable(NRF_TWIS_Type * p_reg, uint32_t mask);
/**
* @brief Function for checking if the specified interrupts are enabled.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] mask Mask of interrupts to be checked.
*
* @return Mask of enabled interrupts.
*/
NRF_STATIC_INLINE uint32_t nrf_twis_int_enable_check(NRF_TWIS_Type const * p_reg, uint32_t mask);
/**
* @brief Function for disabling the specified interrupts.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] mask Mask of interrupts to be disabled.
*/
NRF_STATIC_INLINE void nrf_twis_int_disable(NRF_TWIS_Type * p_reg, uint32_t mask);
#if defined(DPPI_PRESENT) || defined(__NRFX_DOXYGEN__)
/**
* @brief Function for setting the subscribe configuration for a given
* TWIS task.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] task Task for which to set the configuration.
* @param[in] channel Channel through which to subscribe events.
*/
NRF_STATIC_INLINE void nrf_twis_subscribe_set(NRF_TWIS_Type * p_reg,
nrf_twis_task_t task,
uint8_t channel);
/**
* @brief Function for clearing the subscribe configuration for a given
* TWIS task.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] task Task for which to clear the configuration.
*/
NRF_STATIC_INLINE void nrf_twis_subscribe_clear(NRF_TWIS_Type * p_reg,
nrf_twis_task_t task);
/**
* @brief Function for setting the publish configuration for a given
* TWIS event.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] event Event for which to set the configuration.
* @param[in] channel Channel through which to publish the event.
*/
NRF_STATIC_INLINE void nrf_twis_publish_set(NRF_TWIS_Type * p_reg,
nrf_twis_event_t event,
uint8_t channel);
/**
* @brief Function for clearing the publish configuration for a given
* TWIS event.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] event Event for which to clear the configuration.
*/
NRF_STATIC_INLINE void nrf_twis_publish_clear(NRF_TWIS_Type * p_reg,
nrf_twis_event_t event);
#endif // defined(DPPI_PRESENT) || defined(__NRFX_DOXYGEN__)
/**
* @brief Function for retrieving and clearing the TWIS error source.
*
* @attention Error sources are cleared after read.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return Error source mask with values from @ref nrf_twis_error_t.
*/
NRF_STATIC_INLINE uint32_t nrf_twis_error_source_get_and_clear(NRF_TWIS_Type * p_reg);
/**
* @brief Function for getting information about which of the addresses matched.
*
* Function returns index in the address table
* that points to the address that already matched.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return Index of matched address.
*/
NRF_STATIC_INLINE uint_fast8_t nrf_twis_match_get(NRF_TWIS_Type const * p_reg);
/**
* @brief Function for enabling TWIS.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*/
NRF_STATIC_INLINE void nrf_twis_enable(NRF_TWIS_Type * p_reg);
/**
* @brief Function for disabling TWIS.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*/
NRF_STATIC_INLINE void nrf_twis_disable(NRF_TWIS_Type * p_reg);
/**
* @brief Function for configuring TWIS pins.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] scl SCL pin number.
* @param[in] sda SDA pin number.
*/
NRF_STATIC_INLINE void nrf_twis_pins_set(NRF_TWIS_Type * p_reg, uint32_t scl, uint32_t sda);
/**
* @brief Function for retrieving the SCL pin selection.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return SCL pin selection.
*/
NRF_STATIC_INLINE uint32_t nrf_twis_scl_pin_get(NRF_TWIS_Type const * p_reg);
/**
* @brief Function for retrieving the SDA pin selection.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return SDA pin selection.
*/
NRF_STATIC_INLINE uint32_t nrf_twis_sda_pin_get(NRF_TWIS_Type const * p_reg);
/**
* @brief Function for setting the receive buffer.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] p_buf Pointer to the buffer for received data.
* @param[in] length Maximum number of data bytes to receive.
*/
NRF_STATIC_INLINE void nrf_twis_rx_buffer_set(NRF_TWIS_Type * p_reg,
uint8_t * p_buf,
size_t length);
/**
* @brief Function that prepares TWIS for receiving
*
* This function sets receive buffer and then sets NRF_TWIS_TASK_PREPARERX task.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] p_buf Pointer to the buffer for received data.
* @param[in] length Maximum number of data bytes to receive.
*/
NRF_STATIC_INLINE void nrf_twis_rx_prepare(NRF_TWIS_Type * p_reg,
uint8_t * p_buf,
size_t length);
/**
* @brief Function for getting number of bytes received in the last transaction.
*
* @param[in] p_reg TWIS instance.
*
* @return Amount of bytes received.
* */
NRF_STATIC_INLINE size_t nrf_twis_rx_amount_get(NRF_TWIS_Type const * p_reg);
/**
* @brief Function for setting the transmit buffer.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] p_buf Pointer to the buffer with data to send.
* @param[in] length Maximum number of data bytes to transmit.
*/
NRF_STATIC_INLINE void nrf_twis_tx_buffer_set(NRF_TWIS_Type * p_reg,
uint8_t const * p_buf,
size_t length);
/**
* @brief Function for preparing TWIS for transmitting.
*
* This function sets transmit buffer and then sets NRF_TWIS_TASK_PREPARETX task.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] p_buf Pointer to the buffer with data to send.
* @param[in] length Maximum number of data bytes to transmit.
*/
NRF_STATIC_INLINE void nrf_twis_tx_prepare(NRF_TWIS_Type * p_reg,
uint8_t const * p_buf,
size_t length);
/**
* @brief Function for getting the number of bytes transmitted in the last transaction.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return Amount of bytes transmitted.
*/
NRF_STATIC_INLINE size_t nrf_twis_tx_amount_get(NRF_TWIS_Type const * p_reg);
/**
* @brief Function for setting the slave address.
*
* Function sets the selected address for this TWI interface.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] n Index of address to be set.
* @param[in] addr Addres to be set.
*
* @sa nrf_twis_config_address_set
* @sa nrf_twis_config_address_get
*/
NRF_STATIC_INLINE void nrf_twis_address_set(NRF_TWIS_Type * p_reg,
uint_fast8_t n,
nrf_twis_address_t addr);
/**
* @brief Function for retrieving configured slave address.
*
* Function gets the selected address for this TWI interface.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] n Index of address to get.
*
* @return Configured slave address.
*/
NRF_STATIC_INLINE nrf_twis_address_t nrf_twis_address_get(NRF_TWIS_Type const * p_reg,
uint_fast8_t n);
/**
* @brief Function for setting the device address configuration.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] addr_mask Mask of address indexes of what device should answer to.
*
* @sa nrf_twis_address_set
*/
NRF_STATIC_INLINE void nrf_twis_config_address_set(NRF_TWIS_Type * p_reg,
nrf_twis_config_addr_mask_t addr_mask);
/**
* @brief Function for retrieving the device address configuration.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return Mask of address indexes of what device should answer to.
*/
NRF_STATIC_INLINE nrf_twis_config_addr_mask_t nrf_twis_config_address_get(
NRF_TWIS_Type const * p_reg);
/**
* @brief Function for setting the over-read character.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] orc Over-read character. Character clocked out in case of
* over-read of the TXD buffer.
*/
NRF_STATIC_INLINE void nrf_twis_orc_set(NRF_TWIS_Type * p_reg,
uint8_t orc);
/**
* @brief Function for setting the over-read character.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return Over-read character configured for selected instance.
*/
NRF_STATIC_INLINE uint8_t nrf_twis_orc_get(NRF_TWIS_Type const * p_reg);
#if defined(TWIS_TXD_LIST_LIST_Msk) || defined(__NRFX_DOXYGEN__)
/**
* @brief Function for enabling the TX list feature.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*/
NRF_STATIC_INLINE void nrf_twis_tx_list_enable(NRF_TWIS_Type * p_reg);
/**
* @brief Function for disabling the TX list feature.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*/
NRF_STATIC_INLINE void nrf_twis_tx_list_disable(NRF_TWIS_Type * p_reg);
#endif // defined(TWIS_TXD_LIST_LIST_Msk) || defined(__NRFX_DOXYGEN__)
#if defined(TWIS_RXD_LIST_LIST_Msk) || defined(__NRFX_DOXYGEN__)
/**
* @brief Function for enabling the RX list feature.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*/
NRF_STATIC_INLINE void nrf_twis_rx_list_enable(NRF_TWIS_Type * p_reg);
/**
* @brief Function for disabling the RX list feature.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*/
NRF_STATIC_INLINE void nrf_twis_rx_list_disable(NRF_TWIS_Type * p_reg);
#endif // defined(TWIS_RXD_LIST_LIST_Msk) || defined(__NRFX_DOXYGEN__)
/** @} */ /* End of nrf_twis_hal */
#ifndef NRF_DECLARE_ONLY
/* ------------------------------------------------------------------------------------------------
* Internal functions
*/
/**
* @internal
* @brief Internal function for getting task or event register address.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] offset Offset of the register from the beginning of the instance.
*
* @attention Offset must be modulo 4 value. In other case, hardware fault can occur.
* @return Pointer to the register.
*/
NRF_STATIC_INLINE volatile uint32_t* nrf_twis_getRegPtr(NRF_TWIS_Type * p_reg, uint32_t offset)
{
return (volatile uint32_t*)((uint8_t *)p_reg + (uint32_t)offset);
}
/**
* @internal
* @brief Internal function for getting task/event register address - constant version.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] offset Offset of the register from the beginning of the instance.
*
* @attention Offset must be modulo 4 value. In other case, hardware fault can occur.
* @return Pointer to the register.
*/
NRF_STATIC_INLINE volatile const uint32_t* nrf_twis_getRegPtr_c(NRF_TWIS_Type const * p_reg,
uint32_t offset)
{
return (volatile const uint32_t*)((uint8_t *)p_reg + (uint32_t)offset);
}
/* ------------------------------------------------------------------------------------------------
* Interface functions definitions
*/
NRF_STATIC_INLINE void nrf_twis_task_trigger(NRF_TWIS_Type * p_reg, nrf_twis_task_t task)
{
*(nrf_twis_getRegPtr(p_reg, (uint32_t)task)) = 1UL;
}
NRF_STATIC_INLINE uint32_t nrf_twis_task_address_get(NRF_TWIS_Type const * p_reg,
nrf_twis_task_t task)
{
return (uint32_t)nrf_twis_getRegPtr_c(p_reg, (uint32_t)task);
}
NRF_STATIC_INLINE void nrf_twis_event_clear(NRF_TWIS_Type * p_reg, nrf_twis_event_t event)
{
*(nrf_twis_getRegPtr(p_reg, (uint32_t)event)) = 0UL;
nrf_event_readback((uint8_t *)p_reg + (uint32_t)event);
}
NRF_STATIC_INLINE bool nrf_twis_event_check(NRF_TWIS_Type const * p_reg, nrf_twis_event_t event)
{
return (bool)*nrf_twis_getRegPtr_c(p_reg, (uint32_t)event);
}
NRF_STATIC_INLINE bool nrf_twis_event_get_and_clear(NRF_TWIS_Type * p_reg, nrf_twis_event_t event)
{
bool ret = nrf_twis_event_check(p_reg, event);
if (ret)
{
nrf_twis_event_clear(p_reg, event);
}
return ret;
}
NRF_STATIC_INLINE uint32_t nrf_twis_event_address_get(NRF_TWIS_Type const * p_reg,
nrf_twis_event_t event)
{
return (uint32_t)nrf_twis_getRegPtr_c(p_reg, (uint32_t)event);
}
NRF_STATIC_INLINE void nrf_twis_shorts_enable(NRF_TWIS_Type * p_reg, uint32_t mask)
{
p_reg->SHORTS |= mask;
}
NRF_STATIC_INLINE void nrf_twis_shorts_disable(NRF_TWIS_Type * p_reg, uint32_t mask)
{
if (~0U == mask)
{
/* Optimized version for "disable all" */
p_reg->SHORTS = 0;
}
else
{
p_reg->SHORTS &= ~mask;
}
}
NRF_STATIC_INLINE uint32_t nrf_twis_shorts_get(NRF_TWIS_Type const * p_reg)
{
return p_reg->SHORTS;
}
NRF_STATIC_INLINE void nrf_twis_int_enable(NRF_TWIS_Type * p_reg, uint32_t mask)
{
p_reg->INTENSET = mask;
}
NRF_STATIC_INLINE uint32_t nrf_twis_int_enable_check(NRF_TWIS_Type const * p_reg, uint32_t mask)
{
return p_reg->INTENSET & mask;
}
NRF_STATIC_INLINE void nrf_twis_int_disable(NRF_TWIS_Type * p_reg, uint32_t mask)
{
p_reg->INTENCLR = mask;
}
#if defined(DPPI_PRESENT)
NRF_STATIC_INLINE void nrf_twis_subscribe_set(NRF_TWIS_Type * p_reg,
nrf_twis_task_t task,
uint8_t channel)
{
*((volatile uint32_t *) ((uint8_t *) p_reg + (uint32_t) task + 0x80uL)) =
((uint32_t)channel | TWIS_SUBSCRIBE_STOP_EN_Msk);
}
NRF_STATIC_INLINE void nrf_twis_subscribe_clear(NRF_TWIS_Type * p_reg,
nrf_twis_task_t task)
{
*((volatile uint32_t *) ((uint8_t *) p_reg + (uint32_t) task + 0x80uL)) = 0;
}
NRF_STATIC_INLINE void nrf_twis_publish_set(NRF_TWIS_Type * p_reg,
nrf_twis_event_t event,
uint8_t channel)
{
*((volatile uint32_t *) ((uint8_t *) p_reg + (uint32_t) event + 0x80uL)) =
((uint32_t)channel | TWIS_PUBLISH_STOPPED_EN_Msk);
}
NRF_STATIC_INLINE void nrf_twis_publish_clear(NRF_TWIS_Type * p_reg,
nrf_twis_event_t event)
{
*((volatile uint32_t *) ((uint8_t *) p_reg + (uint32_t) event + 0x80uL)) = 0;
}
#endif // defined(DPPI_PRESENT)
NRF_STATIC_INLINE uint32_t nrf_twis_error_source_get_and_clear(NRF_TWIS_Type * p_reg)
{
uint32_t ret = p_reg->ERRORSRC;
p_reg->ERRORSRC = ret;
return ret;
}
NRF_STATIC_INLINE uint_fast8_t nrf_twis_match_get(NRF_TWIS_Type const * p_reg)
{
return (uint_fast8_t)p_reg->MATCH;
}
NRF_STATIC_INLINE void nrf_twis_enable(NRF_TWIS_Type * p_reg)
{
p_reg->ENABLE = (TWIS_ENABLE_ENABLE_Enabled << TWIS_ENABLE_ENABLE_Pos);
}
NRF_STATIC_INLINE void nrf_twis_disable(NRF_TWIS_Type * p_reg)
{
p_reg->ENABLE = (TWIS_ENABLE_ENABLE_Disabled << TWIS_ENABLE_ENABLE_Pos);
}
NRF_STATIC_INLINE void nrf_twis_pins_set(NRF_TWIS_Type * p_reg, uint32_t scl, uint32_t sda)
{
p_reg->PSEL.SCL = scl;
p_reg->PSEL.SDA = sda;
}
NRF_STATIC_INLINE uint32_t nrf_twis_scl_pin_get(NRF_TWIS_Type const * p_reg)
{
return p_reg->PSEL.SCL;
}
NRF_STATIC_INLINE uint32_t nrf_twis_sda_pin_get(NRF_TWIS_Type const * p_reg)
{
return p_reg->PSEL.SDA;
}
NRF_STATIC_INLINE void nrf_twis_rx_buffer_set(NRF_TWIS_Type * p_reg,
uint8_t * p_buf,
size_t length)
{
p_reg->RXD.PTR = (uint32_t)p_buf;
p_reg->RXD.MAXCNT = length;
}
NRF_STATIC_INLINE void nrf_twis_rx_prepare(NRF_TWIS_Type * p_reg,
uint8_t * p_buf,
size_t length)
{
nrf_twis_rx_buffer_set(p_reg, p_buf, length);
nrf_twis_task_trigger(p_reg, NRF_TWIS_TASK_PREPARERX);
}
NRF_STATIC_INLINE size_t nrf_twis_rx_amount_get(NRF_TWIS_Type const * p_reg)
{
return p_reg->RXD.AMOUNT;
}
NRF_STATIC_INLINE void nrf_twis_tx_buffer_set(NRF_TWIS_Type * p_reg,
uint8_t const * p_buf,
size_t length)
{
p_reg->TXD.PTR = (uint32_t)p_buf;
p_reg->TXD.MAXCNT = length;
}
NRF_STATIC_INLINE void nrf_twis_tx_prepare(NRF_TWIS_Type * p_reg,
uint8_t const * p_buf,
size_t length)
{
nrf_twis_tx_buffer_set(p_reg, p_buf, length);
nrf_twis_task_trigger(p_reg, NRF_TWIS_TASK_PREPARETX);
}
NRF_STATIC_INLINE size_t nrf_twis_tx_amount_get(NRF_TWIS_Type const * p_reg)
{
return p_reg->TXD.AMOUNT;
}
NRF_STATIC_INLINE void nrf_twis_address_set(NRF_TWIS_Type * p_reg,
uint_fast8_t n,
nrf_twis_address_t addr)
{
p_reg->ADDRESS[n] = addr;
}
NRF_STATIC_INLINE nrf_twis_address_t nrf_twis_address_get(NRF_TWIS_Type const * p_reg,
uint_fast8_t n)
{
return (nrf_twis_address_t)p_reg->ADDRESS[n];
}
NRF_STATIC_INLINE void nrf_twis_config_address_set(NRF_TWIS_Type * p_reg,
nrf_twis_config_addr_mask_t addr_mask)
{
/* This is the only configuration in TWIS - just write it without masking */
p_reg->CONFIG = addr_mask;
}
NRF_STATIC_INLINE nrf_twis_config_addr_mask_t nrf_twis_config_address_get(
NRF_TWIS_Type const * p_reg)
{
return (nrf_twis_config_addr_mask_t)(p_reg->CONFIG & TWIS_ADDRESS_ADDRESS_Msk);
}
NRF_STATIC_INLINE void nrf_twis_orc_set(NRF_TWIS_Type * p_reg, uint8_t orc)
{
p_reg->ORC = orc;
}
NRF_STATIC_INLINE uint8_t nrf_twis_orc_get(NRF_TWIS_Type const * p_reg)
{
return (uint8_t)p_reg->ORC;
}
#if defined(TWIS_TXD_LIST_LIST_Msk)
NRF_STATIC_INLINE void nrf_twis_tx_list_enable(NRF_TWIS_Type * p_reg)
{
p_reg->TXD.LIST = TWIS_TXD_LIST_LIST_ArrayList << TWIS_TXD_LIST_LIST_Pos;
}
NRF_STATIC_INLINE void nrf_twis_tx_list_disable(NRF_TWIS_Type * p_reg)
{
p_reg->TXD.LIST = TWIS_TXD_LIST_LIST_Disabled << TWIS_TXD_LIST_LIST_Pos;
}
#endif // defined(TWIS_TXD_LIST_LIST_Msk)
#if defined(TWIS_RXD_LIST_LIST_Msk)
NRF_STATIC_INLINE void nrf_twis_rx_list_enable(NRF_TWIS_Type * p_reg)
{
p_reg->RXD.LIST = TWIS_RXD_LIST_LIST_ArrayList << TWIS_RXD_LIST_LIST_Pos;
}
NRF_STATIC_INLINE void nrf_twis_rx_list_disable(NRF_TWIS_Type * p_reg)
{
p_reg->RXD.LIST = TWIS_RXD_LIST_LIST_Disabled << TWIS_RXD_LIST_LIST_Pos;
}
#endif // defined(TWIS_RXD_LIST_LIST_Msk)
#endif /* NRF_DECLARE_ONLY */
#ifdef __cplusplus
}
#endif
#endif /* NRF_TWIS_H__ */
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