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simmel-bootloader/lib/sdk/components/drivers_nrf/hal/nrf_i2s.h
hathach df71d3444d follow #1 
seperate files from latest SDK (currently 14.2.0) from good old non-
secure bootloader sdk 11
2018-04-05 00:35:08 +07:00

564 lines
20 KiB
C
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/**
* Copyright (c) 2015 - 2017, Nordic Semiconductor ASA
*
* All rights reserved.
*
* 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, except as embedded into a Nordic
* Semiconductor ASA integrated circuit in a product or a software update for
* such product, 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 Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
* 5. Any software provided in binary form under this license must not be reverse
* engineered, decompiled, modified and/or disassembled.
*
* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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.
*
*/
/**
* @defgroup nrf_i2s_hal I2S HAL
* @{
* @ingroup nrf_i2s
*
* @brief @tagAPI52 Hardware access layer for managing the Inter-IC Sound (I2S) peripheral.
*/
#ifndef NRF_I2S_H__
#define NRF_I2S_H__
#include <stddef.h>
#include <stdbool.h>
#include <stdint.h>
#include "nrf.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief This value can be provided as a parameter for the @ref nrf_i2s_pins_set
* function call to specify that a given I2S signal (SDOUT, SDIN, or MCK)
* shall not be connected to a physical pin.
*/
#define NRF_I2S_PIN_NOT_CONNECTED 0xFFFFFFFF
/**
* @brief I2S tasks.
*/
typedef enum
{
/*lint -save -e30*/
NRF_I2S_TASK_START = offsetof(NRF_I2S_Type, TASKS_START), ///< Starts continuous I2S transfer. Also starts the MCK generator if this is enabled.
NRF_I2S_TASK_STOP = offsetof(NRF_I2S_Type, TASKS_STOP) ///< Stops I2S transfer. Also stops the MCK generator.
/*lint -restore*/
} nrf_i2s_task_t;
/**
* @brief I2S events.
*/
typedef enum
{
/*lint -save -e30*/
NRF_I2S_EVENT_RXPTRUPD = offsetof(NRF_I2S_Type, EVENTS_RXPTRUPD), ///< The RXD.PTR register has been copied to internal double-buffers.
NRF_I2S_EVENT_TXPTRUPD = offsetof(NRF_I2S_Type, EVENTS_TXPTRUPD), ///< The TXD.PTR register has been copied to internal double-buffers.
NRF_I2S_EVENT_STOPPED = offsetof(NRF_I2S_Type, EVENTS_STOPPED) ///< I2S transfer stopped.
/*lint -restore*/
} nrf_i2s_event_t;
/**
* @brief I2S interrupts.
*/
typedef enum
{
NRF_I2S_INT_RXPTRUPD_MASK = I2S_INTENSET_RXPTRUPD_Msk, ///< Interrupt on RXPTRUPD event.
NRF_I2S_INT_TXPTRUPD_MASK = I2S_INTENSET_TXPTRUPD_Msk, ///< Interrupt on TXPTRUPD event.
NRF_I2S_INT_STOPPED_MASK = I2S_INTENSET_STOPPED_Msk ///< Interrupt on STOPPED event.
} nrf_i2s_int_mask_t;
/**
* @brief I2S modes of operation.
*/
typedef enum
{
NRF_I2S_MODE_MASTER = I2S_CONFIG_MODE_MODE_Master, ///< Master mode.
NRF_I2S_MODE_SLAVE = I2S_CONFIG_MODE_MODE_Slave ///< Slave mode.
} nrf_i2s_mode_t;
/**
* @brief I2S master clock generator settings.
*/
typedef enum
{
NRF_I2S_MCK_DISABLED = 0, ///< MCK disabled.
// [conversion to 'int' needed to prevent compilers from complaining
// that the provided value (0x80000000UL) is out of range of "int"]
NRF_I2S_MCK_32MDIV2 = (int)I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV2, ///< 32 MHz / 2 = 16.0 MHz.
NRF_I2S_MCK_32MDIV3 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV3, ///< 32 MHz / 3 = 10.6666667 MHz.
NRF_I2S_MCK_32MDIV4 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV4, ///< 32 MHz / 4 = 8.0 MHz.
NRF_I2S_MCK_32MDIV5 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV5, ///< 32 MHz / 5 = 6.4 MHz.
NRF_I2S_MCK_32MDIV6 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV6, ///< 32 MHz / 6 = 5.3333333 MHz.
NRF_I2S_MCK_32MDIV8 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV8, ///< 32 MHz / 8 = 4.0 MHz.
NRF_I2S_MCK_32MDIV10 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV10, ///< 32 MHz / 10 = 3.2 MHz.
NRF_I2S_MCK_32MDIV11 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV11, ///< 32 MHz / 11 = 2.9090909 MHz.
NRF_I2S_MCK_32MDIV15 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV15, ///< 32 MHz / 15 = 2.1333333 MHz.
NRF_I2S_MCK_32MDIV16 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV16, ///< 32 MHz / 16 = 2.0 MHz.
NRF_I2S_MCK_32MDIV21 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV21, ///< 32 MHz / 21 = 1.5238095 MHz.
NRF_I2S_MCK_32MDIV23 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV23, ///< 32 MHz / 23 = 1.3913043 MHz.
NRF_I2S_MCK_32MDIV31 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV31, ///< 32 MHz / 31 = 1.0322581 MHz.
NRF_I2S_MCK_32MDIV42 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV42, ///< 32 MHz / 42 = 0.7619048 MHz.
NRF_I2S_MCK_32MDIV63 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV63, ///< 32 MHz / 63 = 0.5079365 MHz.
NRF_I2S_MCK_32MDIV125 = I2S_CONFIG_MCKFREQ_MCKFREQ_32MDIV125 ///< 32 MHz / 125 = 0.256 MHz.
} nrf_i2s_mck_t;
/**
* @brief I2S MCK/LRCK ratios.
*/
typedef enum
{
NRF_I2S_RATIO_32X = I2S_CONFIG_RATIO_RATIO_32X, ///< LRCK = MCK / 32.
NRF_I2S_RATIO_48X = I2S_CONFIG_RATIO_RATIO_48X, ///< LRCK = MCK / 48.
NRF_I2S_RATIO_64X = I2S_CONFIG_RATIO_RATIO_64X, ///< LRCK = MCK / 64.
NRF_I2S_RATIO_96X = I2S_CONFIG_RATIO_RATIO_96X, ///< LRCK = MCK / 96.
NRF_I2S_RATIO_128X = I2S_CONFIG_RATIO_RATIO_128X, ///< LRCK = MCK / 128.
NRF_I2S_RATIO_192X = I2S_CONFIG_RATIO_RATIO_192X, ///< LRCK = MCK / 192.
NRF_I2S_RATIO_256X = I2S_CONFIG_RATIO_RATIO_256X, ///< LRCK = MCK / 256.
NRF_I2S_RATIO_384X = I2S_CONFIG_RATIO_RATIO_384X, ///< LRCK = MCK / 384.
NRF_I2S_RATIO_512X = I2S_CONFIG_RATIO_RATIO_512X ///< LRCK = MCK / 512.
} nrf_i2s_ratio_t;
/**
* @brief I2S sample widths.
*/
typedef enum
{
NRF_I2S_SWIDTH_8BIT = I2S_CONFIG_SWIDTH_SWIDTH_8Bit, ///< 8 bit.
NRF_I2S_SWIDTH_16BIT = I2S_CONFIG_SWIDTH_SWIDTH_16Bit, ///< 16 bit.
NRF_I2S_SWIDTH_24BIT = I2S_CONFIG_SWIDTH_SWIDTH_24Bit ///< 24 bit.
} nrf_i2s_swidth_t;
/**
* @brief I2S alignments of sample within a frame.
*/
typedef enum
{
NRF_I2S_ALIGN_LEFT = I2S_CONFIG_ALIGN_ALIGN_Left, ///< Left-aligned.
NRF_I2S_ALIGN_RIGHT = I2S_CONFIG_ALIGN_ALIGN_Right ///< Right-aligned.
} nrf_i2s_align_t;
/**
* @brief I2S frame formats.
*/
typedef enum
{
NRF_I2S_FORMAT_I2S = I2S_CONFIG_FORMAT_FORMAT_I2S, ///< Original I2S format.
NRF_I2S_FORMAT_ALIGNED = I2S_CONFIG_FORMAT_FORMAT_Aligned ///< Alternate (left- or right-aligned) format.
} nrf_i2s_format_t;
/**
* @brief I2S enabled channels.
*/
typedef enum
{
NRF_I2S_CHANNELS_STEREO = I2S_CONFIG_CHANNELS_CHANNELS_Stereo, ///< Stereo.
NRF_I2S_CHANNELS_LEFT = I2S_CONFIG_CHANNELS_CHANNELS_Left, ///< Left only.
NRF_I2S_CHANNELS_RIGHT = I2S_CONFIG_CHANNELS_CHANNELS_Right ///< Right only.
} nrf_i2s_channels_t;
/**
* @brief Function for activating a specific I2S task.
*
* @param[in] p_i2s I2S instance.
* @param[in] task Task to activate.
*/
__STATIC_INLINE void nrf_i2s_task_trigger(NRF_I2S_Type * p_i2s,
nrf_i2s_task_t task);
/**
* @brief Function for getting the address of a specific I2S task register.
*
* @param[in] p_i2s I2S instance.
* @param[in] task Requested task.
*
* @return Address of the specified task register.
*/
__STATIC_INLINE uint32_t nrf_i2s_task_address_get(NRF_I2S_Type const * p_i2s,
nrf_i2s_task_t task);
/**
* @brief Function for clearing a specific I2S event.
*
* @param[in] p_i2s I2S instance.
* @param[in] event Event to clear.
*/
__STATIC_INLINE void nrf_i2s_event_clear(NRF_I2S_Type * p_i2s,
nrf_i2s_event_t event);
/**
* @brief Function for checking the state of a specific I2S event.
*
* @param[in] p_i2s I2S instance.
* @param[in] event Event to check.
*
* @retval true If the event is set.
* @retval false If the event is not set.
*/
__STATIC_INLINE bool nrf_i2s_event_check(NRF_I2S_Type const * p_i2s,
nrf_i2s_event_t event);
/**
* @brief Function for getting the address of a specific I2S event register.
*
* @param[in] p_i2s I2S instance.
* @param[in] event Requested event.
*
* @return Address of the specified event register.
*/
__STATIC_INLINE uint32_t nrf_i2s_event_address_get(NRF_I2S_Type const * p_i2s,
nrf_i2s_event_t event);
/**
* @brief Function for enabling specified interrupts.
*
* @param[in] p_i2s I2S instance.
* @param[in] mask Interrupts to enable.
*/
__STATIC_INLINE void nrf_i2s_int_enable(NRF_I2S_Type * p_i2s, uint32_t mask);
/**
* @brief Function for disabling specified interrupts.
*
* @param[in] p_i2s I2S instance.
* @param[in] mask Interrupts to disable.
*/
__STATIC_INLINE void nrf_i2s_int_disable(NRF_I2S_Type * p_i2s, uint32_t mask);
/**
* @brief Function for retrieving the state of a given interrupt.
*
* @param[in] p_i2s I2S instance.
* @param[in] i2s_int Interrupt to check.
*
* @retval true If the interrupt is enabled.
* @retval false If the interrupt is not enabled.
*/
__STATIC_INLINE bool nrf_i2s_int_enable_check(NRF_I2S_Type const * p_i2s,
nrf_i2s_int_mask_t i2s_int);
/**
* @brief Function for enabling the I2S peripheral.
*
* @param[in] p_i2s I2S instance.
*/
__STATIC_INLINE void nrf_i2s_enable(NRF_I2S_Type * p_i2s);
/**
* @brief Function for disabling the I2S peripheral.
*
* @param[in] p_i2s I2S instance.
*/
__STATIC_INLINE void nrf_i2s_disable(NRF_I2S_Type * p_i2s);
/**
* @brief Function for configuring I2S pins.
*
* Usage of the SDOUT, SDIN, and MCK signals is optional.
* If a given signal is not needed, pass the @ref NRF_I2S_PIN_NOT_CONNECTED
* value instead of its pin number.
*
* @param[in] p_i2s I2S instance.
* @param[in] sck_pin SCK pin number.
* @param[in] lrck_pin LRCK pin number.
* @param[in] mck_pin MCK pin number.
* @param[in] sdout_pin SDOUT pin number.
* @param[in] sdin_pin SDIN pin number.
*/
__STATIC_INLINE void nrf_i2s_pins_set(NRF_I2S_Type * p_i2s,
uint32_t sck_pin,
uint32_t lrck_pin,
uint32_t mck_pin,
uint32_t sdout_pin,
uint32_t sdin_pin);
/**
* @brief Function for setting the I2S peripheral configuration.
*
* @param[in] p_i2s I2S instance.
* @param[in] mode Mode of operation (master or slave).
* @param[in] format I2S frame format.
* @param[in] alignment Alignment of sample within a frame.
* @param[in] sample_width Sample width.
* @param[in] channels Enabled channels.
* @param[in] mck_setup Master clock generator setup.
* @param[in] ratio MCK/LRCK ratio.
*
* @retval true If the configuration has been set successfully.
* @retval false If the requested configuration is not allowed.
*/
__STATIC_INLINE bool nrf_i2s_configure(NRF_I2S_Type * p_i2s,
nrf_i2s_mode_t mode,
nrf_i2s_format_t format,
nrf_i2s_align_t alignment,
nrf_i2s_swidth_t sample_width,
nrf_i2s_channels_t channels,
nrf_i2s_mck_t mck_setup,
nrf_i2s_ratio_t ratio);
/**
* @brief Function for setting up the I2S transfer.
*
* This function sets up the RX and TX buffers and enables reception and/or
* transmission accordingly. If the transfer in a given direction is not
* required, pass NULL instead of the pointer to the corresponding buffer.
*
* @param[in] p_i2s I2S instance.
* @param[in] size Size of the buffers (in 32-bit words).
* @param[in] p_rx_buffer Pointer to the receive buffer.
* Pass NULL to disable reception.
* @param[in] p_tx_buffer Pointer to the transmit buffer.
* Pass NULL to disable transmission.
*/
__STATIC_INLINE void nrf_i2s_transfer_set(NRF_I2S_Type * p_i2s,
uint16_t size,
uint32_t * p_rx_buffer,
uint32_t const * p_tx_buffer);
/**
* @brief Function for setting the pointer to the receive buffer.
*
* @note The size of the buffer can be set only by calling
* @ref nrf_i2s_transfer_set.
*
* @param[in] p_i2s I2S instance.
* @param[in] p_buffer Pointer to the receive buffer.
*/
__STATIC_INLINE void nrf_i2s_rx_buffer_set(NRF_I2S_Type * p_i2s,
uint32_t * p_buffer);
/**
* @brief Function for getting the pointer to the receive buffer.
*
* @param[in] p_i2s I2S instance.
*
* @return Pointer to the receive buffer.
*/
__STATIC_INLINE uint32_t * nrf_i2s_rx_buffer_get(NRF_I2S_Type const * p_i2s);
/**
* @brief Function for setting the pointer to the transmit buffer.
*
* @note The size of the buffer can be set only by calling
* @ref nrf_i2s_transfer_set.
*
* @param[in] p_i2s I2S instance.
* @param[in] p_buffer Pointer to the transmit buffer.
*/
__STATIC_INLINE void nrf_i2s_tx_buffer_set(NRF_I2S_Type * p_i2s,
uint32_t const * p_buffer);
/**
* @brief Function for getting the pointer to the transmit buffer.
*
* @param[in] p_i2s I2S instance.
*
* @return Pointer to the transmit buffer.
*/
__STATIC_INLINE uint32_t * nrf_i2s_tx_buffer_get(NRF_I2S_Type const * p_i2s);
#ifndef SUPPRESS_INLINE_IMPLEMENTATION
__STATIC_INLINE void nrf_i2s_task_trigger(NRF_I2S_Type * p_i2s,
nrf_i2s_task_t task)
{
*((volatile uint32_t *)((uint8_t *)p_i2s + (uint32_t)task)) = 0x1UL;
}
__STATIC_INLINE uint32_t nrf_i2s_task_address_get(NRF_I2S_Type const * p_i2s,
nrf_i2s_task_t task)
{
return ((uint32_t)p_i2s + (uint32_t)task);
}
__STATIC_INLINE void nrf_i2s_event_clear(NRF_I2S_Type * p_i2s,
nrf_i2s_event_t event)
{
*((volatile uint32_t *)((uint8_t *)p_i2s + (uint32_t)event)) = 0x0UL;
#if __CORTEX_M == 0x04
volatile uint32_t dummy = *((volatile uint32_t *)((uint8_t *)p_i2s + (uint32_t)event));
(void)dummy;
#endif
}
__STATIC_INLINE bool nrf_i2s_event_check(NRF_I2S_Type const * p_i2s,
nrf_i2s_event_t event)
{
return (bool)*(volatile uint32_t *)((uint8_t *)p_i2s + (uint32_t)event);
}
__STATIC_INLINE uint32_t nrf_i2s_event_address_get(NRF_I2S_Type const * p_i2s,
nrf_i2s_event_t event)
{
return ((uint32_t)p_i2s + (uint32_t)event);
}
__STATIC_INLINE void nrf_i2s_int_enable(NRF_I2S_Type * p_i2s, uint32_t mask)
{
p_i2s->INTENSET = mask;
}
__STATIC_INLINE void nrf_i2s_int_disable(NRF_I2S_Type * p_i2s, uint32_t mask)
{
p_i2s->INTENCLR = mask;
}
__STATIC_INLINE bool nrf_i2s_int_enable_check(NRF_I2S_Type const * p_i2s,
nrf_i2s_int_mask_t i2s_int)
{
return (bool)(p_i2s->INTENSET & i2s_int);
}
__STATIC_INLINE void nrf_i2s_enable(NRF_I2S_Type * p_i2s)
{
p_i2s->ENABLE = (I2S_ENABLE_ENABLE_Enabled << I2S_ENABLE_ENABLE_Pos);
}
__STATIC_INLINE void nrf_i2s_disable(NRF_I2S_Type * p_i2s)
{
p_i2s->ENABLE = (I2S_ENABLE_ENABLE_Disabled << I2S_ENABLE_ENABLE_Pos);
}
__STATIC_INLINE void nrf_i2s_pins_set(NRF_I2S_Type * p_i2s,
uint32_t sck_pin,
uint32_t lrck_pin,
uint32_t mck_pin,
uint32_t sdout_pin,
uint32_t sdin_pin)
{
p_i2s->PSEL.SCK = sck_pin;
p_i2s->PSEL.LRCK = lrck_pin;
p_i2s->PSEL.MCK = mck_pin;
p_i2s->PSEL.SDOUT = sdout_pin;
p_i2s->PSEL.SDIN = sdin_pin;
}
__STATIC_INLINE bool nrf_i2s_configure(NRF_I2S_Type * p_i2s,
nrf_i2s_mode_t mode,
nrf_i2s_format_t format,
nrf_i2s_align_t alignment,
nrf_i2s_swidth_t sample_width,
nrf_i2s_channels_t channels,
nrf_i2s_mck_t mck_setup,
nrf_i2s_ratio_t ratio)
{
if (mode == NRF_I2S_MODE_MASTER)
{
// The MCK/LRCK ratio shall be a multiple of 2 * sample width.
if (((sample_width == NRF_I2S_SWIDTH_16BIT) &&
(ratio == NRF_I2S_RATIO_48X))
||
((sample_width == NRF_I2S_SWIDTH_24BIT) &&
((ratio == NRF_I2S_RATIO_32X) ||
(ratio == NRF_I2S_RATIO_64X) ||
(ratio == NRF_I2S_RATIO_128X) ||
(ratio == NRF_I2S_RATIO_256X) ||
(ratio == NRF_I2S_RATIO_512X))))
{
return false;
}
}
p_i2s->CONFIG.MODE = mode;
p_i2s->CONFIG.FORMAT = format;
p_i2s->CONFIG.ALIGN = alignment;
p_i2s->CONFIG.SWIDTH = sample_width;
p_i2s->CONFIG.CHANNELS = channels;
p_i2s->CONFIG.RATIO = ratio;
if (mck_setup == NRF_I2S_MCK_DISABLED)
{
p_i2s->CONFIG.MCKEN =
(I2S_CONFIG_MCKEN_MCKEN_Disabled << I2S_CONFIG_MCKEN_MCKEN_Pos);
}
else
{
p_i2s->CONFIG.MCKFREQ = mck_setup;
p_i2s->CONFIG.MCKEN =
(I2S_CONFIG_MCKEN_MCKEN_Enabled << I2S_CONFIG_MCKEN_MCKEN_Pos);
}
return true;
}
__STATIC_INLINE void nrf_i2s_transfer_set(NRF_I2S_Type * p_i2s,
uint16_t size,
uint32_t * p_buffer_rx,
uint32_t const * p_buffer_tx)
{
p_i2s->RXTXD.MAXCNT = size;
nrf_i2s_rx_buffer_set(p_i2s, p_buffer_rx);
p_i2s->CONFIG.RXEN = (p_buffer_rx != NULL) ? 1 : 0;
nrf_i2s_tx_buffer_set(p_i2s, p_buffer_tx);
p_i2s->CONFIG.TXEN = (p_buffer_tx != NULL) ? 1 : 0;
}
__STATIC_INLINE void nrf_i2s_rx_buffer_set(NRF_I2S_Type * p_i2s,
uint32_t * p_buffer)
{
p_i2s->RXD.PTR = (uint32_t)p_buffer;
}
__STATIC_INLINE uint32_t * nrf_i2s_rx_buffer_get(NRF_I2S_Type const * p_i2s)
{
return (uint32_t *)(p_i2s->RXD.PTR);
}
__STATIC_INLINE void nrf_i2s_tx_buffer_set(NRF_I2S_Type * p_i2s,
uint32_t const * p_buffer)
{
p_i2s->TXD.PTR = (uint32_t)p_buffer;
}
__STATIC_INLINE uint32_t * nrf_i2s_tx_buffer_get(NRF_I2S_Type const * p_i2s)
{
return (uint32_t *)(p_i2s->TXD.PTR);
}
#endif // SUPPRESS_INLINE_IMPLEMENTATION
#ifdef __cplusplus
}
#endif
#endif // NRF_I2S_H__
/** @} */
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