diff options
Diffstat (limited to 'bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_flexio_i2s.c')
| -rw-r--r-- | bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_flexio_i2s.c | 903 |
1 files changed, 0 insertions, 903 deletions
diff --git a/bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_flexio_i2s.c b/bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_flexio_i2s.c deleted file mode 100644 index 087e0d691d..0000000000 --- a/bsps/arm/imxrt/nxp/devices/MIMXRT1052/drivers/fsl_flexio_i2s.c +++ /dev/null @@ -1,903 +0,0 @@ -/* - * Copyright (c) 2015, Freescale Semiconductor, Inc. - * Copyright 2016-2019 NXP - * All rights reserved. - * - * SPDX-License-Identifier: BSD-3-Clause - */ - -#include "fsl_flexio_i2s.h" - -/* Component ID definition, used by tools. */ -#ifndef FSL_COMPONENT_ID -#define FSL_COMPONENT_ID "platform.drivers.flexio_i2s" -#endif - -/******************************************************************************* - * Definitations - ******************************************************************************/ -/*!@brief _sai_transfer_state*/ -enum -{ - kFLEXIO_I2S_Busy = 0x0U, /*!< FLEXIO_I2S is busy */ - kFLEXIO_I2S_Idle, /*!< Transfer is done. */ -}; - -/******************************************************************************* - * Prototypes - ******************************************************************************/ - -/*! - * @brief Receive a piece of data in non-blocking way. - * - * @param base FLEXIO I2S base pointer - * @param bitWidth How many bits in a audio word, usually 8/16/24/32 bits. - * @param buffer Pointer to the data to be read. - * @param size Bytes to be read. - */ -static void FLEXIO_I2S_ReadNonBlocking(FLEXIO_I2S_Type *base, uint8_t bitWidth, uint8_t *rxData, size_t size); - -/*! - * @brief sends a piece of data in non-blocking way. - * - * @param base FLEXIO I2S base pointer - * @param bitWidth How many bits in a audio word, usually 8/16/24/32 bits. - * @param buffer Pointer to the data to be written. - * @param size Bytes to be written. - */ -static void FLEXIO_I2S_WriteNonBlocking(FLEXIO_I2S_Type *base, uint8_t bitWidth, uint8_t *txData, size_t size); -/******************************************************************************* - * Variables - ******************************************************************************/ - -/******************************************************************************* - * Code - ******************************************************************************/ - -static uint32_t FLEXIO_I2S_GetInstance(FLEXIO_I2S_Type *base) -{ - return FLEXIO_GetInstance(base->flexioBase); -} - -static void FLEXIO_I2S_WriteNonBlocking(FLEXIO_I2S_Type *base, uint8_t bitWidth, uint8_t *txData, size_t size) -{ - uint32_t i = 0; - uint8_t j = 0; - uint8_t bytesPerWord = bitWidth / 8U; - uint32_t data = 0; - uint32_t temp = 0; - - for (i = 0; i < size / bytesPerWord; i++) - { - for (j = 0; j < bytesPerWord; j++) - { - temp = (uint32_t)(*txData); - data |= (temp << (8U * j)); - txData++; - } - base->flexioBase->SHIFTBUFBIS[base->txShifterIndex] = data << (32U - bitWidth); - data = 0; - } -} - -static void FLEXIO_I2S_ReadNonBlocking(FLEXIO_I2S_Type *base, uint8_t bitWidth, uint8_t *rxData, size_t size) -{ - uint32_t i = 0; - uint8_t j = 0; - uint8_t bytesPerWord = bitWidth / 8U; - uint32_t data = 0; - - for (i = 0; i < size / bytesPerWord; i++) - { - data = (base->flexioBase->SHIFTBUFBIS[base->rxShifterIndex]); - for (j = 0; j < bytesPerWord; j++) - { - *rxData = (uint8_t)((data >> (8U * j)) & 0xFFU); - rxData++; - } - } -} - -/*! - * brief Initializes the FlexIO I2S. - * - * This API configures FlexIO pins and shifter to I2S and configures the FlexIO I2S with a configuration structure. - * The configuration structure can be filled by the user, or be set with default values by - * FLEXIO_I2S_GetDefaultConfig(). - * - * note This API should be called at the beginning of the application to use - * the FlexIO I2S driver. Otherwise, any access to the FlexIO I2S module can cause hard fault - * because the clock is not enabled. - * - * param base FlexIO I2S base pointer - * param config FlexIO I2S configure structure. - */ -void FLEXIO_I2S_Init(FLEXIO_I2S_Type *base, const flexio_i2s_config_t *config) -{ - assert((base != NULL) && (config != NULL)); - - flexio_shifter_config_t shifterConfig = {0}; - flexio_timer_config_t timerConfig = {0}; - -#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) - /* Ungate flexio clock. */ - CLOCK_EnableClock(s_flexioClocks[FLEXIO_I2S_GetInstance(base)]); -#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */ - - /* reset Flexio */ - FLEXIO_Reset(base->flexioBase); - - /* Set shifter for I2S Tx data */ - shifterConfig.timerSelect = base->bclkTimerIndex; - shifterConfig.pinSelect = base->txPinIndex; - shifterConfig.timerPolarity = config->txTimerPolarity; - shifterConfig.pinConfig = kFLEXIO_PinConfigOutput; - shifterConfig.pinPolarity = config->txPinPolarity; - shifterConfig.shifterMode = kFLEXIO_ShifterModeTransmit; - shifterConfig.inputSource = kFLEXIO_ShifterInputFromPin; - shifterConfig.shifterStop = kFLEXIO_ShifterStopBitDisable; - if (config->masterSlave == kFLEXIO_I2S_Master) - { - shifterConfig.shifterStart = kFLEXIO_ShifterStartBitDisabledLoadDataOnShift; - } - else - { - shifterConfig.shifterStart = kFLEXIO_ShifterStartBitDisabledLoadDataOnEnable; - } - - FLEXIO_SetShifterConfig(base->flexioBase, base->txShifterIndex, &shifterConfig); - - /* Set shifter for I2S Rx Data */ - shifterConfig.timerSelect = base->bclkTimerIndex; - shifterConfig.pinSelect = base->rxPinIndex; - shifterConfig.timerPolarity = config->rxTimerPolarity; - shifterConfig.pinConfig = kFLEXIO_PinConfigOutputDisabled; - shifterConfig.pinPolarity = config->rxPinPolarity; - shifterConfig.shifterMode = kFLEXIO_ShifterModeReceive; - shifterConfig.inputSource = kFLEXIO_ShifterInputFromPin; - shifterConfig.shifterStop = kFLEXIO_ShifterStopBitDisable; - shifterConfig.shifterStart = kFLEXIO_ShifterStartBitDisabledLoadDataOnEnable; - - FLEXIO_SetShifterConfig(base->flexioBase, base->rxShifterIndex, &shifterConfig); - - /* Set Timer to I2S frame sync */ - if (config->masterSlave == kFLEXIO_I2S_Master) - { - timerConfig.triggerSelect = FLEXIO_TIMER_TRIGGER_SEL_PININPUT(base->txPinIndex); - timerConfig.triggerPolarity = kFLEXIO_TimerTriggerPolarityActiveHigh; - timerConfig.triggerSource = kFLEXIO_TimerTriggerSourceExternal; - timerConfig.pinConfig = kFLEXIO_PinConfigOutput; - timerConfig.pinSelect = base->fsPinIndex; - timerConfig.pinPolarity = config->fsPinPolarity; - timerConfig.timerMode = kFLEXIO_TimerModeSingle16Bit; - timerConfig.timerOutput = kFLEXIO_TimerOutputOneNotAffectedByReset; - timerConfig.timerDecrement = kFLEXIO_TimerDecSrcOnFlexIOClockShiftTimerOutput; - timerConfig.timerReset = kFLEXIO_TimerResetNever; - timerConfig.timerDisable = kFLEXIO_TimerDisableNever; - timerConfig.timerEnable = kFLEXIO_TimerEnableOnPrevTimerEnable; - timerConfig.timerStart = kFLEXIO_TimerStartBitDisabled; - timerConfig.timerStop = kFLEXIO_TimerStopBitDisabled; - } - else - { - timerConfig.triggerSelect = FLEXIO_TIMER_TRIGGER_SEL_PININPUT(base->bclkPinIndex); - timerConfig.triggerPolarity = kFLEXIO_TimerTriggerPolarityActiveHigh; - timerConfig.triggerSource = kFLEXIO_TimerTriggerSourceInternal; - timerConfig.pinConfig = kFLEXIO_PinConfigOutputDisabled; - timerConfig.pinSelect = base->fsPinIndex; - timerConfig.pinPolarity = config->fsPinPolarity; - timerConfig.timerMode = kFLEXIO_TimerModeSingle16Bit; - timerConfig.timerOutput = kFLEXIO_TimerOutputOneNotAffectedByReset; - timerConfig.timerDecrement = kFLEXIO_TimerDecSrcOnTriggerInputShiftTriggerInput; - timerConfig.timerReset = kFLEXIO_TimerResetNever; - timerConfig.timerDisable = kFLEXIO_TimerDisableOnTimerCompare; - timerConfig.timerEnable = kFLEXIO_TimerEnableOnPinRisingEdge; - timerConfig.timerStart = kFLEXIO_TimerStartBitDisabled; - timerConfig.timerStop = kFLEXIO_TimerStopBitDisabled; - } - FLEXIO_SetTimerConfig(base->flexioBase, base->fsTimerIndex, &timerConfig); - - /* Set Timer to I2S bit clock */ - if (config->masterSlave == kFLEXIO_I2S_Master) - { - timerConfig.triggerSelect = FLEXIO_TIMER_TRIGGER_SEL_SHIFTnSTAT(base->txShifterIndex); - timerConfig.triggerPolarity = kFLEXIO_TimerTriggerPolarityActiveLow; - timerConfig.triggerSource = kFLEXIO_TimerTriggerSourceInternal; - timerConfig.pinSelect = base->bclkPinIndex; - timerConfig.pinConfig = kFLEXIO_PinConfigOutput; - timerConfig.pinPolarity = config->bclkPinPolarity; - timerConfig.timerMode = kFLEXIO_TimerModeDual8BitBaudBit; - timerConfig.timerOutput = kFLEXIO_TimerOutputOneNotAffectedByReset; - timerConfig.timerDecrement = kFLEXIO_TimerDecSrcOnFlexIOClockShiftTimerOutput; - timerConfig.timerReset = kFLEXIO_TimerResetNever; - timerConfig.timerDisable = kFLEXIO_TimerDisableNever; - timerConfig.timerEnable = kFLEXIO_TimerEnableOnTriggerHigh; - timerConfig.timerStart = kFLEXIO_TimerStartBitEnabled; - timerConfig.timerStop = kFLEXIO_TimerStopBitDisabled; - } - else - { - timerConfig.triggerSelect = FLEXIO_TIMER_TRIGGER_SEL_TIMn(base->fsTimerIndex); - timerConfig.triggerPolarity = kFLEXIO_TimerTriggerPolarityActiveHigh; - timerConfig.triggerSource = kFLEXIO_TimerTriggerSourceInternal; - timerConfig.pinSelect = base->bclkPinIndex; - timerConfig.pinConfig = kFLEXIO_PinConfigOutputDisabled; - timerConfig.pinPolarity = config->bclkPinPolarity; - timerConfig.timerMode = kFLEXIO_TimerModeSingle16Bit; - timerConfig.timerOutput = kFLEXIO_TimerOutputOneNotAffectedByReset; - timerConfig.timerDecrement = kFLEXIO_TimerDecSrcOnPinInputShiftPinInput; - timerConfig.timerReset = kFLEXIO_TimerResetNever; - timerConfig.timerDisable = kFLEXIO_TimerDisableOnTimerCompareTriggerLow; - timerConfig.timerEnable = kFLEXIO_TimerEnableOnPinRisingEdgeTriggerHigh; - timerConfig.timerStart = kFLEXIO_TimerStartBitDisabled; - timerConfig.timerStop = kFLEXIO_TimerStopBitDisabled; - } - FLEXIO_SetTimerConfig(base->flexioBase, base->bclkTimerIndex, &timerConfig); - - /* If enable flexio I2S */ - if (config->enableI2S) - { - base->flexioBase->CTRL |= FLEXIO_CTRL_FLEXEN_MASK; - } - else - { - base->flexioBase->CTRL &= ~FLEXIO_CTRL_FLEXEN_MASK; - } -} - -/*! - * brief Sets the FlexIO I2S configuration structure to default values. - * - * The purpose of this API is to get the configuration structure initialized for use in FLEXIO_I2S_Init(). - * Users may use the initialized structure unchanged in FLEXIO_I2S_Init() or modify - * some fields of the structure before calling FLEXIO_I2S_Init(). - * - * param config pointer to master configuration structure - */ -void FLEXIO_I2S_GetDefaultConfig(flexio_i2s_config_t *config) -{ - /* Initializes the configure structure to zero. */ - (void)memset(config, 0, sizeof(*config)); - - config->masterSlave = kFLEXIO_I2S_Master; - config->enableI2S = true; - config->txPinPolarity = kFLEXIO_PinActiveHigh; - config->rxPinPolarity = kFLEXIO_PinActiveHigh; - config->bclkPinPolarity = kFLEXIO_PinActiveHigh; - config->fsPinPolarity = kFLEXIO_PinActiveLow; - config->txTimerPolarity = kFLEXIO_ShifterTimerPolarityOnPositive; - config->rxTimerPolarity = kFLEXIO_ShifterTimerPolarityOnNegitive; -} - -/*! - * brief De-initializes the FlexIO I2S. - * - * Calling this API resets the FlexIO I2S shifter and timer config. After calling this API, - * call the FLEXO_I2S_Init to use the FlexIO I2S module. - * - * param base FlexIO I2S base pointer - */ -void FLEXIO_I2S_Deinit(FLEXIO_I2S_Type *base) -{ - base->flexioBase->SHIFTCFG[base->txShifterIndex] = 0; - base->flexioBase->SHIFTCTL[base->txShifterIndex] = 0; - base->flexioBase->SHIFTCFG[base->rxShifterIndex] = 0; - base->flexioBase->SHIFTCTL[base->rxShifterIndex] = 0; - base->flexioBase->TIMCFG[base->fsTimerIndex] = 0; - base->flexioBase->TIMCMP[base->fsTimerIndex] = 0; - base->flexioBase->TIMCTL[base->fsTimerIndex] = 0; - base->flexioBase->TIMCFG[base->bclkTimerIndex] = 0; - base->flexioBase->TIMCMP[base->bclkTimerIndex] = 0; - base->flexioBase->TIMCTL[base->bclkTimerIndex] = 0; -} - -/*! - * brief Enables the FlexIO I2S interrupt. - * - * This function enables the FlexIO UART interrupt. - * - * param base Pointer to FLEXIO_I2S_Type structure - * param mask interrupt source - */ -void FLEXIO_I2S_EnableInterrupts(FLEXIO_I2S_Type *base, uint32_t mask) -{ - if ((mask & (uint32_t)kFLEXIO_I2S_TxDataRegEmptyInterruptEnable) != 0UL) - { - FLEXIO_EnableShifterStatusInterrupts(base->flexioBase, 1UL << base->txShifterIndex); - } - if ((mask & (uint32_t)kFLEXIO_I2S_RxDataRegFullInterruptEnable) != 0UL) - { - FLEXIO_EnableShifterStatusInterrupts(base->flexioBase, 1UL << base->rxShifterIndex); - } -} - -/*! - * brief Gets the FlexIO I2S status flags. - * - * param base Pointer to FLEXIO_I2S_Type structure - * return Status flag, which are ORed by the enumerators in the _flexio_i2s_status_flags. - */ -uint32_t FLEXIO_I2S_GetStatusFlags(FLEXIO_I2S_Type *base) -{ - uint32_t status = 0; - status = ((FLEXIO_GetShifterStatusFlags(base->flexioBase) & (1UL << base->txShifterIndex)) >> base->txShifterIndex); - status |= - (((FLEXIO_GetShifterStatusFlags(base->flexioBase) & (1UL << base->rxShifterIndex)) >> (base->rxShifterIndex)) - << 1U); - return status; -} - -/*! - * brief Disables the FlexIO I2S interrupt. - * - * This function enables the FlexIO UART interrupt. - * - * param base pointer to FLEXIO_I2S_Type structure - * param mask interrupt source - */ -void FLEXIO_I2S_DisableInterrupts(FLEXIO_I2S_Type *base, uint32_t mask) -{ - if ((mask & (uint32_t)kFLEXIO_I2S_TxDataRegEmptyInterruptEnable) != 0UL) - { - FLEXIO_DisableShifterStatusInterrupts(base->flexioBase, 1UL << base->txShifterIndex); - } - if ((mask & (uint32_t)kFLEXIO_I2S_RxDataRegFullInterruptEnable) != 0UL) - { - FLEXIO_DisableShifterStatusInterrupts(base->flexioBase, 1UL << base->rxShifterIndex); - } -} - -/*! - * brief Configures the FlexIO I2S audio format in master mode. - * - * Audio format can be changed in run-time of FlexIO I2S. This function configures the sample rate and audio data - * format to be transferred. - * - * param base Pointer to FLEXIO_I2S_Type structure - * param format Pointer to FlexIO I2S audio data format structure. - * param srcClock_Hz I2S master clock source frequency in Hz. - */ -void FLEXIO_I2S_MasterSetFormat(FLEXIO_I2S_Type *base, flexio_i2s_format_t *format, uint32_t srcClock_Hz) -{ - uint32_t timDiv = srcClock_Hz / (format->sampleRate_Hz * format->bitWidth * 2U); - uint32_t bclkDiv = 0; - - /* Shall keep bclk and fs div an integer */ - if ((timDiv % 2UL) != 0UL) - { - timDiv += 1U; - } - /* Set Frame sync timer cmp */ - base->flexioBase->TIMCMP[base->fsTimerIndex] = FLEXIO_TIMCMP_CMP(format->bitWidth * timDiv - 1U); - - /* Set bit clock timer cmp */ - bclkDiv = ((timDiv / 2U - 1U) | ((format->bitWidth * 2UL - 1UL) << 8U)); - base->flexioBase->TIMCMP[base->bclkTimerIndex] = FLEXIO_TIMCMP_CMP(bclkDiv); -} - -/*! - * brief Configures the FlexIO I2S audio format in slave mode. - * - * Audio format can be changed in run-time of FlexIO I2S. This function configures the sample rate and audio data - * format to be transferred. - * - * param base Pointer to FLEXIO_I2S_Type structure - * param format Pointer to FlexIO I2S audio data format structure. - */ -void FLEXIO_I2S_SlaveSetFormat(FLEXIO_I2S_Type *base, flexio_i2s_format_t *format) -{ - /* Set Frame sync timer cmp */ - base->flexioBase->TIMCMP[base->fsTimerIndex] = FLEXIO_TIMCMP_CMP(format->bitWidth * 4UL - 3UL); - - /* Set bit clock timer cmp */ - base->flexioBase->TIMCMP[base->bclkTimerIndex] = FLEXIO_TIMCMP_CMP(format->bitWidth * 2UL - 1UL); -} - -/*! - * brief Sends data using a blocking method. - * - * note This function blocks via polling until data is ready to be sent. - * - * param base FlexIO I2S base pointer. - * param bitWidth How many bits in a audio word, usually 8/16/24/32 bits. - * param txData Pointer to the data to be written. - * param size Bytes to be written. - * retval kStatus_Success Successfully write data. - * retval kStatus_FLEXIO_I2C_Timeout Timeout polling status flags. - */ -status_t FLEXIO_I2S_WriteBlocking(FLEXIO_I2S_Type *base, uint8_t bitWidth, uint8_t *txData, size_t size) -{ - uint32_t i = 0; - uint8_t bytesPerWord = bitWidth / 8U; -#if I2S_RETRY_TIMES - uint32_t waitTimes = I2S_RETRY_TIMES; -#endif - - for (i = 0; i < size / bytesPerWord; i++) - { - /* Wait until it can write data */ -#if I2S_RETRY_TIMES - waitTimes = I2S_RETRY_TIMES; - while (((FLEXIO_I2S_GetStatusFlags(base) & (uint32_t)kFLEXIO_I2S_TxDataRegEmptyFlag) == 0UL) && - (--waitTimes != 0U)) - { - } - if (waitTimes == 0U) - { - return kStatus_FLEXIO_I2S_Timeout; - } -#else - while ((FLEXIO_I2S_GetStatusFlags(base) & (uint32_t)kFLEXIO_I2S_TxDataRegEmptyFlag) == 0UL) - { - } -#endif - - FLEXIO_I2S_WriteNonBlocking(base, bitWidth, txData, bytesPerWord); - txData = (uint8_t *)((uint32_t)txData + bytesPerWord); - } - - /* Wait until the last data is sent */ -#if I2S_RETRY_TIMES - waitTimes = I2S_RETRY_TIMES; - while (((FLEXIO_I2S_GetStatusFlags(base) & (uint32_t)kFLEXIO_I2S_TxDataRegEmptyFlag) == 0UL) && (--waitTimes != 0U)) - { - } - if (waitTimes == 0U) - { - return kStatus_FLEXIO_I2S_Timeout; - } -#else - while ((FLEXIO_I2S_GetStatusFlags(base) & (uint32_t)kFLEXIO_I2S_TxDataRegEmptyFlag) == 0UL) - { - } -#endif - - return kStatus_Success; -} - -/*! - * brief Receives a piece of data using a blocking method. - * - * note This function blocks via polling until data is ready to be sent. - * - * param base FlexIO I2S base pointer - * param bitWidth How many bits in a audio word, usually 8/16/24/32 bits. - * param rxData Pointer to the data to be read. - * param size Bytes to be read. - * retval kStatus_Success Successfully read data. - * retval kStatus_FLEXIO_I2C_Timeout Timeout polling status flags. - */ -status_t FLEXIO_I2S_ReadBlocking(FLEXIO_I2S_Type *base, uint8_t bitWidth, uint8_t *rxData, size_t size) -{ - uint32_t i = 0; - uint8_t bytesPerWord = bitWidth / 8U; -#if I2S_RETRY_TIMES - uint32_t waitTimes = I2S_RETRY_TIMES; -#endif - - for (i = 0; i < size / bytesPerWord; i++) - { - /* Wait until data is received */ -#if I2S_RETRY_TIMES - waitTimes = I2S_RETRY_TIMES; - while ((!((FLEXIO_GetShifterStatusFlags(base->flexioBase) & (1UL << base->rxShifterIndex)) != 0UL)) && - (--waitTimes != 0U)) - { - } - if (waitTimes == 0U) - { - return kStatus_FLEXIO_I2S_Timeout; - } -#else - while (!((FLEXIO_GetShifterStatusFlags(base->flexioBase) & (1UL << base->rxShifterIndex)) != 0UL)) - { - } -#endif - - FLEXIO_I2S_ReadNonBlocking(base, bitWidth, rxData, bytesPerWord); - rxData = (uint8_t *)((uint32_t)rxData + bytesPerWord); - } - return kStatus_Success; -} - -/*! - * brief Initializes the FlexIO I2S handle. - * - * This function initializes the FlexIO I2S handle which can be used for other - * FlexIO I2S transactional APIs. Call this API once to get the - * initialized handle. - * - * param base Pointer to FLEXIO_I2S_Type structure - * param handle Pointer to flexio_i2s_handle_t structure to store the transfer state. - * param callback FlexIO I2S callback function, which is called while finished a block. - * param userData User parameter for the FlexIO I2S callback. - */ -void FLEXIO_I2S_TransferTxCreateHandle(FLEXIO_I2S_Type *base, - flexio_i2s_handle_t *handle, - flexio_i2s_callback_t callback, - void *userData) -{ - assert(handle != NULL); - - IRQn_Type flexio_irqs[] = FLEXIO_IRQS; - - /* Zero the handle. */ - (void)memset(handle, 0, sizeof(*handle)); - - /* Store callback and user data. */ - handle->callback = callback; - handle->userData = userData; - - /* Save the context in global variables to support the double weak mechanism. */ - (void)FLEXIO_RegisterHandleIRQ(base, handle, FLEXIO_I2S_TransferTxHandleIRQ); - - /* Set the TX/RX state. */ - handle->state = (uint32_t)kFLEXIO_I2S_Idle; - - /* Enable interrupt in NVIC. */ - (void)EnableIRQ(flexio_irqs[FLEXIO_I2S_GetInstance(base)]); -} - -/*! - * brief Initializes the FlexIO I2S receive handle. - * - * This function initializes the FlexIO I2S handle which can be used for other - * FlexIO I2S transactional APIs. Call this API once to get the - * initialized handle. - * - * param base Pointer to FLEXIO_I2S_Type structure. - * param handle Pointer to flexio_i2s_handle_t structure to store the transfer state. - * param callback FlexIO I2S callback function, which is called while finished a block. - * param userData User parameter for the FlexIO I2S callback. - */ -void FLEXIO_I2S_TransferRxCreateHandle(FLEXIO_I2S_Type *base, - flexio_i2s_handle_t *handle, - flexio_i2s_callback_t callback, - void *userData) -{ - assert(handle != NULL); - - IRQn_Type flexio_irqs[] = FLEXIO_IRQS; - - /* Zero the handle. */ - (void)memset(handle, 0, sizeof(*handle)); - - /* Store callback and user data. */ - handle->callback = callback; - handle->userData = userData; - - /* Save the context in global variables to support the double weak mechanism. */ - (void)FLEXIO_RegisterHandleIRQ(base, handle, FLEXIO_I2S_TransferRxHandleIRQ); - - /* Set the TX/RX state. */ - handle->state = (uint32_t)kFLEXIO_I2S_Idle; - - /* Enable interrupt in NVIC. */ - (void)EnableIRQ(flexio_irqs[FLEXIO_I2S_GetInstance(base)]); -} - -/*! - * brief Configures the FlexIO I2S audio format. - * - * Audio format can be changed at run-time of FlexIO I2S. This function configures the sample rate and audio data - * format to be transferred. - * - * param base Pointer to FLEXIO_I2S_Type structure. - * param handle FlexIO I2S handle pointer. - * param format Pointer to audio data format structure. - * param srcClock_Hz FlexIO I2S bit clock source frequency in Hz. This parameter should be 0 while in slave mode. - */ -void FLEXIO_I2S_TransferSetFormat(FLEXIO_I2S_Type *base, - flexio_i2s_handle_t *handle, - flexio_i2s_format_t *format, - uint32_t srcClock_Hz) -{ - assert((handle != NULL) && (format != NULL)); - - /* Set the bitWidth to handle */ - handle->bitWidth = format->bitWidth; - - /* Set sample rate */ - if (srcClock_Hz != 0UL) - { - /* It is master */ - FLEXIO_I2S_MasterSetFormat(base, format, srcClock_Hz); - } - else - { - FLEXIO_I2S_SlaveSetFormat(base, format); - } -} - -/*! - * brief Performs an interrupt non-blocking send transfer on FlexIO I2S. - * - * note The API returns immediately after transfer initiates. - * Call FLEXIO_I2S_GetRemainingBytes to poll the transfer status and check whether - * the transfer is finished. If the return status is 0, the transfer is finished. - * - * param base Pointer to FLEXIO_I2S_Type structure. - * param handle Pointer to flexio_i2s_handle_t structure which stores the transfer state - * param xfer Pointer to flexio_i2s_transfer_t structure - * retval kStatus_Success Successfully start the data transmission. - * retval kStatus_FLEXIO_I2S_TxBusy Previous transmission still not finished, data not all written to TX register yet. - * retval kStatus_InvalidArgument The input parameter is invalid. - */ -status_t FLEXIO_I2S_TransferSendNonBlocking(FLEXIO_I2S_Type *base, - flexio_i2s_handle_t *handle, - flexio_i2s_transfer_t *xfer) -{ - assert(handle != NULL); - - /* Check if the queue is full */ - if (handle->queue[handle->queueUser].data != NULL) - { - return kStatus_FLEXIO_I2S_QueueFull; - } - if ((xfer->dataSize == 0U) || (xfer->data == NULL)) - { - return kStatus_InvalidArgument; - } - - /* Add into queue */ - handle->queue[handle->queueUser].data = xfer->data; - handle->queue[handle->queueUser].dataSize = xfer->dataSize; - handle->transferSize[handle->queueUser] = xfer->dataSize; - handle->queueUser = (handle->queueUser + 1U) % FLEXIO_I2S_XFER_QUEUE_SIZE; - - /* Set the state to busy */ - handle->state = (uint32_t)kFLEXIO_I2S_Busy; - - FLEXIO_I2S_EnableInterrupts(base, kFLEXIO_I2S_TxDataRegEmptyInterruptEnable); - - /* Enable Tx transfer */ - FLEXIO_I2S_Enable(base, true); - - return kStatus_Success; -} - -/*! - * brief Performs an interrupt non-blocking receive transfer on FlexIO I2S. - * - * note The API returns immediately after transfer initiates. - * Call FLEXIO_I2S_GetRemainingBytes to poll the transfer status to check whether - * the transfer is finished. If the return status is 0, the transfer is finished. - * - * param base Pointer to FLEXIO_I2S_Type structure. - * param handle Pointer to flexio_i2s_handle_t structure which stores the transfer state - * param xfer Pointer to flexio_i2s_transfer_t structure - * retval kStatus_Success Successfully start the data receive. - * retval kStatus_FLEXIO_I2S_RxBusy Previous receive still not finished. - * retval kStatus_InvalidArgument The input parameter is invalid. - */ -status_t FLEXIO_I2S_TransferReceiveNonBlocking(FLEXIO_I2S_Type *base, - flexio_i2s_handle_t *handle, - flexio_i2s_transfer_t *xfer) -{ - assert(handle != NULL); - - /* Check if the queue is full */ - if (handle->queue[handle->queueUser].data != NULL) - { - return kStatus_FLEXIO_I2S_QueueFull; - } - - if ((xfer->dataSize == 0U) || (xfer->data == NULL)) - { - return kStatus_InvalidArgument; - } - - /* Add into queue */ - handle->queue[handle->queueUser].data = xfer->data; - handle->queue[handle->queueUser].dataSize = xfer->dataSize; - handle->transferSize[handle->queueUser] = xfer->dataSize; - handle->queueUser = (handle->queueUser + 1U) % FLEXIO_I2S_XFER_QUEUE_SIZE; - - /* Set state to busy */ - handle->state = (uint32_t)kFLEXIO_I2S_Busy; - - /* Enable interrupt */ - FLEXIO_I2S_EnableInterrupts(base, kFLEXIO_I2S_RxDataRegFullInterruptEnable); - - /* Enable Rx transfer */ - FLEXIO_I2S_Enable(base, true); - - return kStatus_Success; -} - -/*! - * brief Aborts the current send. - * - * note This API can be called at any time when interrupt non-blocking transfer initiates - * to abort the transfer in a early time. - * - * param base Pointer to FLEXIO_I2S_Type structure. - * param handle Pointer to flexio_i2s_handle_t structure which stores the transfer state - */ -void FLEXIO_I2S_TransferAbortSend(FLEXIO_I2S_Type *base, flexio_i2s_handle_t *handle) -{ - assert(handle != NULL); - - /* Stop Tx transfer and disable interrupt */ - FLEXIO_I2S_DisableInterrupts(base, kFLEXIO_I2S_TxDataRegEmptyInterruptEnable); - handle->state = (uint32_t)kFLEXIO_I2S_Idle; - - /* Clear the queue */ - (void)memset(handle->queue, 0, sizeof(flexio_i2s_transfer_t) * FLEXIO_I2S_XFER_QUEUE_SIZE); - handle->queueDriver = 0; - handle->queueUser = 0; -} - -/*! - * brief Aborts the current receive. - * - * note This API can be called at any time when interrupt non-blocking transfer initiates - * to abort the transfer in a early time. - * - * param base Pointer to FLEXIO_I2S_Type structure. - * param handle Pointer to flexio_i2s_handle_t structure which stores the transfer state - */ -void FLEXIO_I2S_TransferAbortReceive(FLEXIO_I2S_Type *base, flexio_i2s_handle_t *handle) -{ - assert(handle != NULL); - - /* Stop rx transfer and disable interrupt */ - FLEXIO_I2S_DisableInterrupts(base, kFLEXIO_I2S_RxDataRegFullInterruptEnable); - handle->state = (uint32_t)kFLEXIO_I2S_Idle; - - /* Clear the queue */ - (void)memset(handle->queue, 0, sizeof(flexio_i2s_transfer_t) * FLEXIO_I2S_XFER_QUEUE_SIZE); - handle->queueDriver = 0; - handle->queueUser = 0; -} - -/*! - * brief Gets the remaining bytes to be sent. - * - * param base Pointer to FLEXIO_I2S_Type structure. - * param handle Pointer to flexio_i2s_handle_t structure which stores the transfer state - * param count Bytes sent. - * retval kStatus_Success Succeed get the transfer count. - * retval kStatus_NoTransferInProgress There is not a non-blocking transaction currently in progress. - */ -status_t FLEXIO_I2S_TransferGetSendCount(FLEXIO_I2S_Type *base, flexio_i2s_handle_t *handle, size_t *count) -{ - assert(handle != NULL); - - status_t status = kStatus_Success; - uint8_t queueDriver = handle->queueDriver; - - if (handle->state != (uint32_t)kFLEXIO_I2S_Busy) - { - status = kStatus_NoTransferInProgress; - } - else - { - *count = (handle->transferSize[queueDriver] - handle->queue[queueDriver].dataSize); - } - - return status; -} - -/*! - * brief Gets the remaining bytes to be received. - * - * param base Pointer to FLEXIO_I2S_Type structure. - * param handle Pointer to flexio_i2s_handle_t structure which stores the transfer state - * return count Bytes received. - * retval kStatus_Success Succeed get the transfer count. - * retval kStatus_NoTransferInProgress There is not a non-blocking transaction currently in progress. - */ -status_t FLEXIO_I2S_TransferGetReceiveCount(FLEXIO_I2S_Type *base, flexio_i2s_handle_t *handle, size_t *count) -{ - assert(handle != NULL); - - status_t status = kStatus_Success; - uint8_t queueDriver = handle->queueDriver; - - if (handle->state != (uint32_t)kFLEXIO_I2S_Busy) - { - status = kStatus_NoTransferInProgress; - } - else - { - *count = (handle->transferSize[queueDriver] - handle->queue[queueDriver].dataSize); - } - - return status; -} - -/*! - * brief Tx interrupt handler. - * - * param i2sBase Pointer to FLEXIO_I2S_Type structure. - * param i2sHandle Pointer to flexio_i2s_handle_t structure - */ -void FLEXIO_I2S_TransferTxHandleIRQ(void *i2sBase, void *i2sHandle) -{ - assert(i2sHandle != NULL); - - flexio_i2s_handle_t *handle = (flexio_i2s_handle_t *)i2sHandle; - FLEXIO_I2S_Type *base = (FLEXIO_I2S_Type *)i2sBase; - uint8_t *buffer = handle->queue[handle->queueDriver].data; - uint8_t dataSize = handle->bitWidth / 8U; - - /* Handle error */ - if ((FLEXIO_GetShifterErrorFlags(base->flexioBase) & (1UL << base->txShifterIndex)) != 0UL) - { - FLEXIO_ClearShifterErrorFlags(base->flexioBase, (1UL << base->txShifterIndex)); - } - /* Handle transfer */ - if (((FLEXIO_I2S_GetStatusFlags(base) & (uint32_t)kFLEXIO_I2S_TxDataRegEmptyFlag) != 0UL) && - (handle->queue[handle->queueDriver].data != NULL)) - { - FLEXIO_I2S_WriteNonBlocking(base, handle->bitWidth, buffer, dataSize); - - /* Update internal counter */ - handle->queue[handle->queueDriver].dataSize -= dataSize; - handle->queue[handle->queueDriver].data = - (uint8_t *)((uint32_t)handle->queue[handle->queueDriver].data + dataSize); - } - - /* If finished a block, call the callback function */ - if ((handle->queue[handle->queueDriver].dataSize == 0U) && (handle->queue[handle->queueDriver].data != NULL)) - { - (void)memset(&handle->queue[handle->queueDriver], 0, sizeof(flexio_i2s_transfer_t)); - handle->queueDriver = (handle->queueDriver + 1U) % FLEXIO_I2S_XFER_QUEUE_SIZE; - if (handle->callback != NULL) - { - (handle->callback)(base, handle, kStatus_Success, handle->userData); - } - } - - /* If all data finished, just stop the transfer */ - if (handle->queue[handle->queueDriver].data == NULL) - { - FLEXIO_I2S_TransferAbortSend(base, handle); - } -} - -/*! - * brief Rx interrupt handler. - * - * param i2sBase Pointer to FLEXIO_I2S_Type structure. - * param i2sHandle Pointer to flexio_i2s_handle_t structure. - */ -void FLEXIO_I2S_TransferRxHandleIRQ(void *i2sBase, void *i2sHandle) -{ - assert(i2sHandle != NULL); - - flexio_i2s_handle_t *handle = (flexio_i2s_handle_t *)i2sHandle; - FLEXIO_I2S_Type *base = (FLEXIO_I2S_Type *)i2sBase; - uint8_t *buffer = handle->queue[handle->queueDriver].data; - uint8_t dataSize = handle->bitWidth / 8U; - - /* Handle transfer */ - if (((FLEXIO_I2S_GetStatusFlags(base) & (uint32_t)kFLEXIO_I2S_RxDataRegFullFlag) != 0UL) && - (handle->queue[handle->queueDriver].data != NULL)) - { - FLEXIO_I2S_ReadNonBlocking(base, handle->bitWidth, buffer, dataSize); - - /* Update internal state */ - handle->queue[handle->queueDriver].dataSize -= dataSize; - handle->queue[handle->queueDriver].data = - (uint8_t *)((uint32_t)handle->queue[handle->queueDriver].data + dataSize); - } - - /* If finished a block, call the callback function */ - if ((handle->queue[handle->queueDriver].dataSize == 0U) && (handle->queue[handle->queueDriver].data != NULL)) - { - (void)memset(&handle->queue[handle->queueDriver], 0, sizeof(flexio_i2s_transfer_t)); - handle->queueDriver = (handle->queueDriver + 1U) % FLEXIO_I2S_XFER_QUEUE_SIZE; - if (handle->callback != NULL) - { - (handle->callback)(base, handle, kStatus_Success, handle->userData); - } - } - - /* If all data finished, just stop the transfer */ - if (handle->queue[handle->queueDriver].data == NULL) - { - FLEXIO_I2S_TransferAbortReceive(base, handle); - } -} |