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hal_nordic/nrfx/hal/nrf_twim.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_TWIM_H__
#define NRF_TWIM_H__
#include <nrfx.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup nrf_twim_hal TWIM HAL
* @{
* @ingroup nrf_twim
* @brief Hardware access layer for managing the TWIM peripheral.
*/
/**
* @brief Macro getting pointer to the structure of registers of the TWIM peripheral.
*
* @param[in] idx TWIM instance index.
*
* @return Pointer to the structure of registers of the TWIM peripheral.
*/
#define NRF_TWIM_INST_GET(idx) NRFX_CONCAT_2(NRF_TWIM, idx)
#if defined(TWIM_FREQUENCY_FREQUENCY_K1000) || defined(__NRFX_DOXYGEN__)
/** @brief Symbol indicating whether 1000 kHz clock frequency is available. */
#define NRF_TWIM_HAS_1000_KHZ_FREQ 1
#else
#define NRF_TWIM_HAS_1000_KHZ_FREQ 0
#endif
/** @brief TWIM tasks. */
typedef enum
{
NRF_TWIM_TASK_STARTRX = offsetof(NRF_TWIM_Type, TASKS_STARTRX), ///< Start TWI receive sequence.
NRF_TWIM_TASK_STARTTX = offsetof(NRF_TWIM_Type, TASKS_STARTTX), ///< Start TWI transmit sequence.
NRF_TWIM_TASK_STOP = offsetof(NRF_TWIM_Type, TASKS_STOP), ///< Stop TWI transaction.
NRF_TWIM_TASK_SUSPEND = offsetof(NRF_TWIM_Type, TASKS_SUSPEND), ///< Suspend TWI transaction.
NRF_TWIM_TASK_RESUME = offsetof(NRF_TWIM_Type, TASKS_RESUME) ///< Resume TWI transaction.
} nrf_twim_task_t;
/** @brief TWIM events. */
typedef enum
{
NRF_TWIM_EVENT_STOPPED = offsetof(NRF_TWIM_Type, EVENTS_STOPPED), ///< TWI stopped.
NRF_TWIM_EVENT_ERROR = offsetof(NRF_TWIM_Type, EVENTS_ERROR), ///< TWI error.
NRF_TWIM_EVENT_SUSPENDED = offsetof(NRF_TWIM_Type, EVENTS_SUSPENDED), ///< TWI suspended.
NRF_TWIM_EVENT_RXSTARTED = offsetof(NRF_TWIM_Type, EVENTS_RXSTARTED), ///< Receive sequence started.
NRF_TWIM_EVENT_TXSTARTED = offsetof(NRF_TWIM_Type, EVENTS_TXSTARTED), ///< Transmit sequence started.
NRF_TWIM_EVENT_LASTRX = offsetof(NRF_TWIM_Type, EVENTS_LASTRX), ///< Byte boundary, starting to receive the last byte.
NRF_TWIM_EVENT_LASTTX = offsetof(NRF_TWIM_Type, EVENTS_LASTTX) ///< Byte boundary, starting to transmit the last byte.
} nrf_twim_event_t;
/** @brief TWIM shortcuts. */
typedef enum
{
NRF_TWIM_SHORT_LASTTX_STARTRX_MASK = TWIM_SHORTS_LASTTX_STARTRX_Msk, ///< Shortcut between LASTTX event and STARTRX task.
NRF_TWIM_SHORT_LASTTX_SUSPEND_MASK = TWIM_SHORTS_LASTTX_SUSPEND_Msk, ///< Shortcut between LASTTX event and SUSPEND task.
NRF_TWIM_SHORT_LASTTX_STOP_MASK = TWIM_SHORTS_LASTTX_STOP_Msk, ///< Shortcut between LASTTX event and STOP task.
NRF_TWIM_SHORT_LASTRX_STARTTX_MASK = TWIM_SHORTS_LASTRX_STARTTX_Msk, ///< Shortcut between LASTRX event and STARTTX task.
NRF_TWIM_SHORT_LASTRX_STOP_MASK = TWIM_SHORTS_LASTRX_STOP_Msk, ///< Shortcut between LASTRX event and STOP task.
NRF_TWIM_ALL_SHORTS_MASK = TWIM_SHORTS_LASTTX_STARTRX_Msk |
TWIM_SHORTS_LASTTX_SUSPEND_Msk |
TWIM_SHORTS_LASTTX_STOP_Msk |
TWIM_SHORTS_LASTRX_STARTTX_Msk |
TWIM_SHORTS_LASTRX_STOP_Msk ///< All TWIM shortcuts.
} nrf_twim_short_mask_t;
/** @brief TWIM interrupts. */
typedef enum
{
NRF_TWIM_INT_STOPPED_MASK = TWIM_INTENSET_STOPPED_Msk, ///< Interrupt on STOPPED event.
NRF_TWIM_INT_ERROR_MASK = TWIM_INTENSET_ERROR_Msk, ///< Interrupt on ERROR event.
NRF_TWIM_INT_SUSPENDED_MASK = TWIM_INTENSET_SUSPENDED_Msk, ///< Interrupt on SUSPENDED event.
NRF_TWIM_INT_RXSTARTED_MASK = TWIM_INTENSET_RXSTARTED_Msk, ///< Interrupt on RXSTARTED event.
NRF_TWIM_INT_TXSTARTED_MASK = TWIM_INTENSET_TXSTARTED_Msk, ///< Interrupt on TXSTARTED event.
NRF_TWIM_INT_LASTRX_MASK = TWIM_INTENSET_LASTRX_Msk, ///< Interrupt on LASTRX event.
NRF_TWIM_INT_LASTTX_MASK = TWIM_INTENSET_LASTTX_Msk, ///< Interrupt on LASTTX event.
NRF_TWIM_ALL_INTS_MASK = TWIM_INTENSET_STOPPED_Msk |
TWIM_INTENSET_ERROR_Msk |
TWIM_INTENSET_SUSPENDED_Msk |
TWIM_INTENSET_RXSTARTED_Msk |
TWIM_INTENSET_TXSTARTED_Msk |
TWIM_INTENSET_LASTRX_Msk |
TWIM_INTENSET_LASTTX_Msk ///< All TWIM interrupts.
} nrf_twim_int_mask_t;
/** @brief TWIM master clock frequency. */
typedef enum
{
NRF_TWIM_FREQ_100K = TWIM_FREQUENCY_FREQUENCY_K100, ///< 100 kbps.
NRF_TWIM_FREQ_250K = TWIM_FREQUENCY_FREQUENCY_K250, ///< 250 kbps.
NRF_TWIM_FREQ_400K = TWIM_FREQUENCY_FREQUENCY_K400, ///< 400 kbps.
#if NRF_TWIM_HAS_1000_KHZ_FREQ
NRF_TWIM_FREQ_1000K = TWIM_FREQUENCY_FREQUENCY_K1000 ///< 1000 kbps.
#endif
} nrf_twim_frequency_t;
/** @brief TWIM error source. */
typedef enum
{
NRF_TWIM_ERROR_ADDRESS_NACK = TWIM_ERRORSRC_ANACK_Msk, ///< NACK received after sending the address.
NRF_TWIM_ERROR_DATA_NACK = TWIM_ERRORSRC_DNACK_Msk, ///< NACK received after sending a data byte.
NRF_TWIM_ERROR_OVERRUN = TWIM_ERRORSRC_OVERRUN_Msk ///< Overrun error.
/**< A new byte was received before the previous byte was
* handled by peripheral. (previous data is lost). */
} nrf_twim_error_t;
/**
* @brief Function for activating the specified TWIM 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_twim_task_trigger(NRF_TWIM_Type * p_reg,
nrf_twim_task_t task);
/**
* @brief Function for getting the address of the specified TWIM task register.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] task The specified task.
*
* @return Address of the specified task register.
*/
NRF_STATIC_INLINE uint32_t nrf_twim_task_address_get(NRF_TWIM_Type const * p_reg,
nrf_twim_task_t task);
/**
* @brief Function for clearing the specified TWIM event.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] event Event to clear.
*/
NRF_STATIC_INLINE void nrf_twim_event_clear(NRF_TWIM_Type * p_reg,
nrf_twim_event_t event);
/**
* @brief Function for retrieving the state of the TWIM 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_twim_event_check(NRF_TWIM_Type const * p_reg,
nrf_twim_event_t event);
/**
* @brief Function for getting the address of the specified TWIM event register.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] event The specified event.
*
* @return Address of the specified event register.
*/
NRF_STATIC_INLINE uint32_t nrf_twim_event_address_get(NRF_TWIM_Type const * p_reg,
nrf_twim_event_t event);
/**
* @brief Function for enabling the specified shortcuts.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] mask Shortcuts to be enabled.
*/
NRF_STATIC_INLINE void nrf_twim_shorts_enable(NRF_TWIM_Type * p_reg,
uint32_t mask);
/**
* @brief Function for disabling the specified shortcuts.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] mask Shortcuts to be disabled.
*/
NRF_STATIC_INLINE void nrf_twim_shorts_disable(NRF_TWIM_Type * p_reg,
uint32_t mask);
/**
* @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_twim_int_enable(NRF_TWIM_Type * 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_twim_int_disable(NRF_TWIM_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_twim_int_enable_check(NRF_TWIM_Type const * p_reg, uint32_t mask);
#if defined(DPPI_PRESENT) || defined(__NRFX_DOXYGEN__)
/**
* @brief Function for setting the subscribe configuration for a given
* TWIM 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_twim_subscribe_set(NRF_TWIM_Type * p_reg,
nrf_twim_task_t task,
uint8_t channel);
/**
* @brief Function for clearing the subscribe configuration for a given
* TWIM 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_twim_subscribe_clear(NRF_TWIM_Type * p_reg,
nrf_twim_task_t task);
/**
* @brief Function for setting the publish configuration for a given
* TWIM 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_twim_publish_set(NRF_TWIM_Type * p_reg,
nrf_twim_event_t event,
uint8_t channel);
/**
* @brief Function for clearing the publish configuration for a given
* TWIM 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_twim_publish_clear(NRF_TWIM_Type * p_reg,
nrf_twim_event_t event);
#endif // defined(DPPI_PRESENT) || defined(__NRFX_DOXYGEN__)
/**
* @brief Function for enabling the TWIM peripheral.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*/
NRF_STATIC_INLINE void nrf_twim_enable(NRF_TWIM_Type * p_reg);
/**
* @brief Function for disabling the TWIM peripheral.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*/
NRF_STATIC_INLINE void nrf_twim_disable(NRF_TWIM_Type * p_reg);
/**
* @brief Function for configuring TWI pins.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] scl_pin SCL pin number.
* @param[in] sda_pin SDA pin number.
*/
NRF_STATIC_INLINE void nrf_twim_pins_set(NRF_TWIM_Type * p_reg,
uint32_t scl_pin,
uint32_t sda_pin);
/**
* @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_twim_scl_pin_get(NRF_TWIM_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_twim_sda_pin_get(NRF_TWIM_Type const * p_reg);
/**
* @brief Function for setting the TWI master clock frequency.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] frequency TWI frequency.
*/
NRF_STATIC_INLINE void nrf_twim_frequency_set(NRF_TWIM_Type * p_reg,
nrf_twim_frequency_t frequency);
/**
* @brief Function for checking the TWI error source.
*
* The error flags are cleared after reading.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return Mask with error source flags.
*/
NRF_STATIC_INLINE uint32_t nrf_twim_errorsrc_get_and_clear(NRF_TWIM_Type * p_reg);
/**
* @brief Function for setting the address to be used in TWI transfers.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] address Address to be used in transfers.
*/
NRF_STATIC_INLINE void nrf_twim_address_set(NRF_TWIM_Type * p_reg,
uint8_t address);
/**
* @brief Function for setting the transmit buffer.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] p_buffer Pointer to the buffer with data to send.
* @param[in] length Maximum number of data bytes to transmit.
*/
NRF_STATIC_INLINE void nrf_twim_tx_buffer_set(NRF_TWIM_Type * p_reg,
uint8_t const * p_buffer,
size_t length);
/**
* @brief Function for setting the receive buffer.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] p_buffer Pointer to the buffer for received data.
* @param[in] length Maximum number of data bytes to receive.
*/
NRF_STATIC_INLINE void nrf_twim_rx_buffer_set(NRF_TWIM_Type * p_reg,
uint8_t * p_buffer,
size_t length);
/**
* @brief Function for setting the specified shortcuts.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
* @param[in] mask Shortcuts to be set.
*/
NRF_STATIC_INLINE void nrf_twim_shorts_set(NRF_TWIM_Type * p_reg,
uint32_t mask);
/**
* @brief Function for getting the shortcut setting.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return Current shortcut configuration.
*/
NRF_STATIC_INLINE uint32_t nrf_twim_shorts_get(NRF_TWIM_Type const * p_reg);
/**
* @brief Function for getting the amount of transmitted bytes.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return Amount of transmitted bytes.
*/
NRF_STATIC_INLINE size_t nrf_twim_txd_amount_get(NRF_TWIM_Type const * p_reg);
/**
* @brief Function for getting the amount of received bytes.
*
* @param[in] p_reg Pointer to the structure of registers of the peripheral.
*
* @return Amount of received bytes.
*/
NRF_STATIC_INLINE size_t nrf_twim_rxd_amount_get(NRF_TWIM_Type const * p_reg);
/**
* @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_twim_tx_list_enable(NRF_TWIM_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_twim_tx_list_disable(NRF_TWIM_Type * p_reg);
/**
* @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_twim_rx_list_enable(NRF_TWIM_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_twim_rx_list_disable(NRF_TWIM_Type * p_reg);
#ifndef NRF_DECLARE_ONLY
NRF_STATIC_INLINE void nrf_twim_task_trigger(NRF_TWIM_Type * p_reg,
nrf_twim_task_t task)
{
*((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)task)) = 0x1UL;
}
NRF_STATIC_INLINE uint32_t nrf_twim_task_address_get(NRF_TWIM_Type const * p_reg,
nrf_twim_task_t task)
{
return (uint32_t)((uint8_t *)p_reg + (uint32_t)task);
}
NRF_STATIC_INLINE void nrf_twim_event_clear(NRF_TWIM_Type * p_reg,
nrf_twim_event_t event)
{
*((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event)) = 0x0UL;
nrf_event_readback((uint8_t *)p_reg + (uint32_t)event);
}
NRF_STATIC_INLINE bool nrf_twim_event_check(NRF_TWIM_Type const * p_reg,
nrf_twim_event_t event)
{
return (bool)*(volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event);
}
NRF_STATIC_INLINE uint32_t nrf_twim_event_address_get(NRF_TWIM_Type const * p_reg,
nrf_twim_event_t event)
{
return (uint32_t)((uint8_t *)p_reg + (uint32_t)event);
}
NRF_STATIC_INLINE void nrf_twim_shorts_enable(NRF_TWIM_Type * p_reg,
uint32_t mask)
{
p_reg->SHORTS |= mask;
}
NRF_STATIC_INLINE void nrf_twim_shorts_disable(NRF_TWIM_Type * p_reg,
uint32_t mask)
{
p_reg->SHORTS &= ~(mask);
}
NRF_STATIC_INLINE void nrf_twim_int_enable(NRF_TWIM_Type * p_reg,
uint32_t mask)
{
p_reg->INTENSET = mask;
}
NRF_STATIC_INLINE void nrf_twim_int_disable(NRF_TWIM_Type * p_reg,
uint32_t mask)
{
p_reg->INTENCLR = mask;
}
NRF_STATIC_INLINE uint32_t nrf_twim_int_enable_check(NRF_TWIM_Type const * p_reg, uint32_t mask)
{
return p_reg->INTENSET & mask;
}
#if defined(DPPI_PRESENT)
NRF_STATIC_INLINE void nrf_twim_subscribe_set(NRF_TWIM_Type * p_reg,
nrf_twim_task_t task,
uint8_t channel)
{
*((volatile uint32_t *) ((uint8_t *) p_reg + (uint32_t) task + 0x80uL)) =
((uint32_t)channel | TWIM_SUBSCRIBE_STARTRX_EN_Msk);
}
NRF_STATIC_INLINE void nrf_twim_subscribe_clear(NRF_TWIM_Type * p_reg,
nrf_twim_task_t task)
{
*((volatile uint32_t *) ((uint8_t *) p_reg + (uint32_t) task + 0x80uL)) = 0;
}
NRF_STATIC_INLINE void nrf_twim_publish_set(NRF_TWIM_Type * p_reg,
nrf_twim_event_t event,
uint8_t channel)
{
*((volatile uint32_t *) ((uint8_t *) p_reg + (uint32_t) event + 0x80uL)) =
((uint32_t)channel | TWIM_PUBLISH_STOPPED_EN_Msk);
}
NRF_STATIC_INLINE void nrf_twim_publish_clear(NRF_TWIM_Type * p_reg,
nrf_twim_event_t event)
{
*((volatile uint32_t *) ((uint8_t *) p_reg + (uint32_t) event + 0x80uL)) = 0;
}
#endif // defined(DPPI_PRESENT)
NRF_STATIC_INLINE void nrf_twim_enable(NRF_TWIM_Type * p_reg)
{
p_reg->ENABLE = (TWIM_ENABLE_ENABLE_Enabled << TWIM_ENABLE_ENABLE_Pos);
}
NRF_STATIC_INLINE void nrf_twim_disable(NRF_TWIM_Type * p_reg)
{
p_reg->ENABLE = (TWIM_ENABLE_ENABLE_Disabled << TWIM_ENABLE_ENABLE_Pos);
}
NRF_STATIC_INLINE void nrf_twim_pins_set(NRF_TWIM_Type * p_reg,
uint32_t scl_pin,
uint32_t sda_pin)
{
p_reg->PSEL.SCL = scl_pin;
p_reg->PSEL.SDA = sda_pin;
}
NRF_STATIC_INLINE uint32_t nrf_twim_scl_pin_get(NRF_TWIM_Type const * p_reg)
{
return p_reg->PSEL.SCL;
}
NRF_STATIC_INLINE uint32_t nrf_twim_sda_pin_get(NRF_TWIM_Type const * p_reg)
{
return p_reg->PSEL.SDA;
}
NRF_STATIC_INLINE void nrf_twim_frequency_set(NRF_TWIM_Type * p_reg,
nrf_twim_frequency_t frequency)
{
p_reg->FREQUENCY = frequency;
}
NRF_STATIC_INLINE uint32_t nrf_twim_errorsrc_get_and_clear(NRF_TWIM_Type * p_reg)
{
uint32_t error_source = p_reg->ERRORSRC;
// [error flags are cleared by writing '1' on their position]
p_reg->ERRORSRC = error_source;
return error_source;
}
NRF_STATIC_INLINE void nrf_twim_address_set(NRF_TWIM_Type * p_reg,
uint8_t address)
{
p_reg->ADDRESS = address;
}
NRF_STATIC_INLINE void nrf_twim_tx_buffer_set(NRF_TWIM_Type * p_reg,
uint8_t const * p_buffer,
size_t length)
{
p_reg->TXD.PTR = (uint32_t)p_buffer;
p_reg->TXD.MAXCNT = length;
}
NRF_STATIC_INLINE void nrf_twim_rx_buffer_set(NRF_TWIM_Type * p_reg,
uint8_t * p_buffer,
size_t length)
{
p_reg->RXD.PTR = (uint32_t)p_buffer;
p_reg->RXD.MAXCNT = length;
}
NRF_STATIC_INLINE void nrf_twim_shorts_set(NRF_TWIM_Type * p_reg,
uint32_t mask)
{
p_reg->SHORTS = mask;
}
NRF_STATIC_INLINE uint32_t nrf_twim_shorts_get(NRF_TWIM_Type const * p_reg)
{
return p_reg->SHORTS;
}
NRF_STATIC_INLINE size_t nrf_twim_txd_amount_get(NRF_TWIM_Type const * p_reg)
{
return p_reg->TXD.AMOUNT;
}
NRF_STATIC_INLINE size_t nrf_twim_rxd_amount_get(NRF_TWIM_Type const * p_reg)
{
return p_reg->RXD.AMOUNT;
}
NRF_STATIC_INLINE void nrf_twim_tx_list_enable(NRF_TWIM_Type * p_reg)
{
p_reg->TXD.LIST = TWIM_TXD_LIST_LIST_ArrayList << TWIM_TXD_LIST_LIST_Pos;
}
NRF_STATIC_INLINE void nrf_twim_tx_list_disable(NRF_TWIM_Type * p_reg)
{
p_reg->TXD.LIST = TWIM_TXD_LIST_LIST_Disabled << TWIM_TXD_LIST_LIST_Pos;
}
NRF_STATIC_INLINE void nrf_twim_rx_list_enable(NRF_TWIM_Type * p_reg)
{
p_reg->RXD.LIST = TWIM_RXD_LIST_LIST_ArrayList << TWIM_RXD_LIST_LIST_Pos;
}
NRF_STATIC_INLINE void nrf_twim_rx_list_disable(NRF_TWIM_Type * p_reg)
{
p_reg->RXD.LIST = TWIM_RXD_LIST_LIST_Disabled << TWIM_RXD_LIST_LIST_Pos;
}
#endif // NRF_DECLARE_ONLY
/** @} */
#ifdef __cplusplus
}
#endif
#endif // NRF_TWIM_H__
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