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rt-thread-official/bsp/imxrt1052-evk/Libraries/drivers/fsl_flexspi.c

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/*
* Copyright (c) 2016, Freescale Semiconductor, Inc.
* Copyright 2016-2017 NXP
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o 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.
*
* o 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.
*/
#include "fsl_flexspi.h"
/*******************************************************************************
* Definitations
******************************************************************************/
#define FREQ_1MHz (1000000UL)
#define FLEXSPI_DLLCR_DEFAULT (0x100UL)
#define FLEXSPI_LUT_KEY_VAL (0x5AF05AF0ul)
enum
{
kFLEXSPI_DelayCellUnitMin = 75, /* 75ps. */
kFLEXSPI_DelayCellUnitMax = 225, /* 225ps. */
};
/*! @brief Common sets of flags used by the driver. */
enum _flexspi_flag_constants
{
/*! IRQ sources enabled by the non-blocking transactional API. */
kIrqFlags = kFLEXSPI_IpTxFifoWatermarkEmpltyFlag | kFLEXSPI_IpRxFifoWatermarkAvailableFlag |
kFLEXSPI_SequenceExecutionTimeoutFlag | kFLEXSPI_IpCommandSequenceErrorFlag |
kFLEXSPI_IpCommandGrantTimeoutFlag | kFLEXSPI_IpCommandExcutionDoneFlag,
/*! Errors to check for. */
kErrorFlags = kFLEXSPI_SequenceExecutionTimeoutFlag | kFLEXSPI_IpCommandSequenceErrorFlag |
kFLEXSPI_IpCommandGrantTimeoutFlag,
};
enum _flexspi_transfer_state
{
kFLEXSPI_Idle = 0x0U, /*!< Transfer is done. */
kFLEXSPI_BusyWrite = 0x1U, /*!< FLEXSPI is busy write transfer. */
kFLEXSPI_BusyRead = 0x2U, /*!< FLEXSPI is busy write transfer. */
};
/*! @brief Typedef for interrupt handler. */
typedef void (*flexspi_isr_t)(FLEXSPI_Type *base, void *flexspiHandle);
/*******************************************************************************
* Prototypes
******************************************************************************/
/*!
* @brief Get the instance number for FLEXSPI.
*
* @param base FLEXSPI base pointer.
*/
uint32_t FLEXSPI_GetInstance(FLEXSPI_Type *base);
/*!
* @brief Configure flash A/B sample clock DLL.
*
* @param base FLEXSPI base pointer.
* @param config Flash configuration parameters.
*/
static uint32_t FLEXSPI_ConfigureDll(FLEXSPI_Type *base, flexspi_device_config_t *config);
/*!
* @brief Check and clear IP command execution errors.
*
* @param base FLEXSPI base pointer.
* @param status interrupt status.
*/
status_t FLEXSPI_CheckAndClearError(FLEXSPI_Type *base, uint32_t status);
/*******************************************************************************
* Variables
******************************************************************************/
/*! @brief Pointers to flexspi handles for each instance. */
static void *s_flexspiHandle[FSL_FEATURE_SOC_FLEXSPI_COUNT];
/*! @brief Pointers to flexspi bases for each instance. */
static FLEXSPI_Type *const s_flexspiBases[] = FLEXSPI_BASE_PTRS;
/*! @brief Pointers to flexspi IRQ number for each instance. */
static const IRQn_Type s_flexspiIrqs[] = FLEXSPI_IRQS;
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
/* Clock name array */
static const clock_ip_name_t s_flexspiClock[] = FLEXSPI_CLOCKS;
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
/*******************************************************************************
* Code
******************************************************************************/
uint32_t FLEXSPI_GetInstance(FLEXSPI_Type *base)
{
uint32_t instance;
/* Find the instance index from base address mappings. */
for (instance = 0; instance < FSL_FEATURE_SOC_FLEXSPI_COUNT; instance++)
{
if (s_flexspiBases[instance] == base)
{
break;
}
}
assert(instance < FSL_FEATURE_SOC_FLEXSPI_COUNT);
return instance;
}
static uint32_t FLEXSPI_ConfigureDll(FLEXSPI_Type *base, flexspi_device_config_t *config)
{
bool isUnifiedConfig = true;
uint32_t flexspiDllValue;
uint32_t dllValue;
uint32_t temp;
uint8_t rxSampleClock = (base->MCR0 & FLEXSPI_MCR0_RXCLKSRC_MASK) >> FLEXSPI_MCR0_RXCLKSRC_SHIFT;
switch (rxSampleClock)
{
case kFLEXSPI_ReadSampleClkLoopbackInternally:
case kFLEXSPI_ReadSampleClkLoopbackFromDqsPad:
case kFLEXSPI_ReadSampleClkLoopbackFromSckPad:
isUnifiedConfig = true;
break;
case kFLEXSPI_ReadSampleClkExternalInputFromDqsPad:
if (config->isSck2Enabled)
{
isUnifiedConfig = true;
}
else
{
isUnifiedConfig = false;
}
break;
default:
break;
}
if (isUnifiedConfig)
{
flexspiDllValue = FLEXSPI_DLLCR_DEFAULT; /* 1 fixed delay cells in DLL delay chain) */
}
else
{
if (config->flexspiRootClk >= 100 * FREQ_1MHz)
{
/* DLLEN = 1, SLVDLYTARGET = 0xF, */
flexspiDllValue = FLEXSPI_DLLCR_DLLEN(1) | FLEXSPI_DLLCR_SLVDLYTARGET(0x0F);
}
else
{
temp = config->dataValidTime * 1000; /* Convert data valid time in ns to ps. */
dllValue = temp / kFLEXSPI_DelayCellUnitMin;
if (dllValue * kFLEXSPI_DelayCellUnitMin < temp)
{
dllValue++;
}
flexspiDllValue = FLEXSPI_DLLCR_OVRDEN(1) | FLEXSPI_DLLCR_OVRDVAL(dllValue);
}
}
return flexspiDllValue;
}
status_t FLEXSPI_CheckAndClearError(FLEXSPI_Type *base, uint32_t status)
{
status_t result = kStatus_Success;
/* Check for error. */
status &= kErrorFlags;
if (status)
{
/* Select the correct error code.. */
if (status & kFLEXSPI_SequenceExecutionTimeoutFlag)
{
result = kStatus_FLEXSPI_SequenceExecutionTimeout;
}
else if (status & kFLEXSPI_IpCommandSequenceErrorFlag)
{
result = kStatus_FLEXSPI_IpCommandSequenceError;
}
else if (status & kFLEXSPI_IpCommandGrantTimeoutFlag)
{
result = kStatus_FLEXSPI_IpCommandGrantTimeout;
}
else
{
assert(false);
}
/* Clear the flags. */
FLEXSPI_ClearInterruptStatusFlags(base, status);
/* Reset fifos. These flags clear automatically. */
base->IPTXFCR |= FLEXSPI_IPTXFCR_CLRIPTXF_MASK;
base->IPRXFCR |= FLEXSPI_IPRXFCR_CLRIPRXF_MASK;
}
return result;
}
void FLEXSPI_Init(FLEXSPI_Type *base, const flexspi_config_t *config)
{
uint32_t configValue = 0;
uint8_t i = 0;
#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
/* Enable the flexspi clock */
CLOCK_EnableClock(s_flexspiClock[FLEXSPI_GetInstance(base)]);
#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
/* Reset peripheral before configuring it. */
base->MCR0 &= ~FLEXSPI_MCR0_MDIS_MASK;
FLEXSPI_SoftwareReset(base);
/* Configure MCR0 configuration items. */
configValue = FLEXSPI_MCR0_RXCLKSRC(config->rxSampleClock) | FLEXSPI_MCR0_DOZEEN(config->enableDoze) |
FLEXSPI_MCR0_IPGRANTWAIT(config->ipGrantTimeoutCycle) |
FLEXSPI_MCR0_AHBGRANTWAIT(config->ahbConfig.ahbGrantTimeoutCycle) |
FLEXSPI_MCR0_SCKFREERUNEN(config->enableSckFreeRunning) |
FLEXSPI_MCR0_HSEN(config->enableHalfSpeedAccess) |
FLEXSPI_MCR0_COMBINATIONEN(config->enableCombination) |
FLEXSPI_MCR0_ATDFEN(config->ahbConfig.enableAHBWriteIpTxFifo) |
FLEXSPI_MCR0_ATDFEN(config->ahbConfig.enableAHBWriteIpRxFifo) | FLEXSPI_MCR0_MDIS_MASK;
base->MCR0 = configValue;
/* Configure MCR1 configurations. */
configValue =
FLEXSPI_MCR1_SEQWAIT(config->seqTimeoutCycle) | FLEXSPI_MCR1_AHBBUSWAIT(config->ahbConfig.ahbBusTimeoutCycle);
base->MCR1 = configValue;
/* Configure MCR2 configurations. */
configValue = FLEXSPI_MCR2_RESUMEWAIT(config->ahbConfig.resumeWaitCycle) |
FLEXSPI_MCR2_SCKBDIFFOPT(config->enableSckBDiffOpt) |
FLEXSPI_MCR2_SAMEDEVICEEN(config->enableSameConfigForAll) |
FLEXSPI_MCR2_CLRAHBBUFOPT(config->ahbConfig.enableClearAHBBufferOpt);
base->MCR2 = configValue;
/* Configure AHB control items. */
base->AHBCR = FLEXSPI_AHBCR_PREFETCHEN(config->ahbConfig.enableAHBPrefetch) |
FLEXSPI_AHBCR_BUFFERABLEEN(config->ahbConfig.enableAHBBufferable) |
FLEXSPI_AHBCR_CACHABLEEN(config->ahbConfig.enableAHBCachable);
/* Configure AHB rx buffers. */
for (i = 0; i < FSL_FEATURE_FLEXSPI_AHB_BUFFER_COUNT - 1; i++)
{
base->AHBRXBUFCR0[i] = FLEXSPI_AHBRXBUFCR0_PRIORITY(config->ahbConfig.buffer[i].priority) |
FLEXSPI_AHBRXBUFCR0_MSTRID(config->ahbConfig.buffer[i].masterIndex) |
FLEXSPI_AHBRXBUFCR0_BUFSZ(config->ahbConfig.buffer[i].bufferSize / 8);
}
/* Configure IP Fifo watermarks. */
base->IPRXFCR |= FLEXSPI_IPRXFCR_RXWMRK(config->rxWatermark / 8 - 1);
base->IPTXFCR |= FLEXSPI_IPRXFCR_RXWMRK(config->txWatermark / 8 - 1);
}
void FLEXSPI_GetDefaultConfig(flexspi_config_t *config)
{
config->rxSampleClock = kFLEXSPI_ReadSampleClkLoopbackInternally;
config->enableSckFreeRunning = false;
config->enableCombination = false;
config->enableDoze = true;
config->enableHalfSpeedAccess = false;
config->enableSckBDiffOpt = false;
config->enableSameConfigForAll = false;
config->seqTimeoutCycle = 0xFFFFU;
config->ipGrantTimeoutCycle = 0xFFU;
config->txWatermark = 8;
config->rxWatermark = 8;
config->ahbConfig.enableAHBWriteIpTxFifo = false;
config->ahbConfig.enableAHBWriteIpRxFifo = false;
config->ahbConfig.ahbGrantTimeoutCycle = 0xFFU;
config->ahbConfig.ahbBusTimeoutCycle = 0xFFFFU;
config->ahbConfig.resumeWaitCycle = 0x20U;
memset(config->ahbConfig.buffer, 0, sizeof(config->ahbConfig.buffer));
config->ahbConfig.enableClearAHBBufferOpt = false;
config->ahbConfig.enableAHBPrefetch = false;
config->ahbConfig.enableAHBBufferable = false;
config->ahbConfig.enableAHBCachable = false;
}
void FLEXSPI_Deinit(FLEXSPI_Type *base)
{
/* Reset peripheral. */
FLEXSPI_SoftwareReset(base);
}
void FLEXSPI_SetFlashConfig(FLEXSPI_Type *base, flexspi_device_config_t *config, flexspi_port_t port)
{
uint32_t configValue = 0;
uint8_t index = port >> 1; /* PortA with index 0, PortB with index 1. */
/* Wait for bus idle before change flash configuration. */
while (!FLEXSPI_GetBusIdleStatus(base))
{
}
/* Configure flash size. */
base->FLSHCR0[index] = 0;
base->FLSHCR0[port] = config->flashSize;
/* Configure flash parameters. */
base->FLSHCR1[port] = FLEXSPI_FLSHCR1_CSINTERVAL(config->CSInterval) |
FLEXSPI_FLSHCR1_CSINTERVALUNIT(config->CSIntervalUnit) |
FLEXSPI_FLSHCR1_TCSH(config->CSHoldTime) | FLEXSPI_FLSHCR1_TCSS(config->CSSetupTime) |
FLEXSPI_FLSHCR1_CAS(config->columnspace) | FLEXSPI_FLSHCR1_WA(config->enableWordAddress);
/* Configure AHB operation items. */
configValue = base->FLSHCR2[port];
configValue &= ~(FLEXSPI_FLSHCR2_AWRWAITUNIT_MASK | FLEXSPI_FLSHCR2_AWRWAIT_MASK | FLEXSPI_FLSHCR2_AWRSEQNUM_MASK |
FLEXSPI_FLSHCR2_AWRSEQID_MASK | FLEXSPI_FLSHCR2_ARDSEQNUM_MASK | FLEXSPI_FLSHCR2_AWRSEQID_MASK);
configValue |=
FLEXSPI_FLSHCR2_AWRWAITUNIT(config->AHBWriteWaitUnit) | FLEXSPI_FLSHCR2_AWRWAIT(config->AHBWriteWaitInterval);
if (config->AWRSeqNumber > 0U)
{
configValue |=
FLEXSPI_FLSHCR2_AWRSEQID(config->AWRSeqIndex) | FLEXSPI_FLSHCR2_AWRSEQNUM(config->AWRSeqNumber - 1U);
}
if (config->ARDSeqNumber > 0U)
{
configValue |=
FLEXSPI_FLSHCR2_ARDSEQID(config->ARDSeqIndex) | FLEXSPI_FLSHCR2_ARDSEQNUM(config->ARDSeqNumber - 1U);
}
base->FLSHCR2[port] = configValue;
/* Configure DLL. */
base->DLLCR[index] = FLEXSPI_ConfigureDll(base, config);
/* Configure write mask. */
if (index == 0) /*PortA*/
{
base->FLSHCR4 &= ~FLEXSPI_FLSHCR4_WMENA_MASK;
base->FLSHCR4 |= FLEXSPI_FLSHCR4_WMENA(config->enableWriteMask);
}
else
{
base->FLSHCR4 &= ~FLEXSPI_FLSHCR4_WMENB_MASK;
base->FLSHCR4 |= FLEXSPI_FLSHCR4_WMENB(config->enableWriteMask);
}
/* Exit stop mode. */
base->MCR0 &= ~FLEXSPI_MCR0_MDIS_MASK;
}
void FLEXSPI_UpdateLUT(FLEXSPI_Type *base, uint32_t index, const uint32_t *cmd, uint32_t count)
{
assert(index < 64U);
uint8_t i = 0;
volatile uint32_t *lutBase;
/* Wait for bus idle before change flash configuration. */
while (!FLEXSPI_GetBusIdleStatus(base))
{
}
/* Unlock LUT for update. */
base->LUTKEY = FLEXSPI_LUT_KEY_VAL;
base->LUTCR = 0x02;
lutBase = &base->LUT[index];
for (i = index; i < count; i++)
{
*lutBase++ = *cmd++;
}
/* Lock LUT. */
base->LUTKEY = FLEXSPI_LUT_KEY_VAL;
base->LUTCR = 0x01;
}
status_t FLEXSPI_WriteBlocking(FLEXSPI_Type *base, uint32_t *buffer, size_t size)
{
uint8_t txWatermark = ((base->IPTXFCR & FLEXSPI_IPTXFCR_TXWMRK_MASK) >> FLEXSPI_IPTXFCR_TXWMRK_SHIFT) + 1;
uint32_t status;
status_t result = kStatus_Success;
uint32_t i = 0;
/* Send data buffer */
while (size)
{
/* Wait until there is room in the fifo. This also checks for errors. */
while (!((status = base->INTR) & kFLEXSPI_IpTxFifoWatermarkEmpltyFlag))
{
}
result = FLEXSPI_CheckAndClearError(base, status);
if (result)
{
return result;
}
/* Write watermark level data into tx fifo . */
if (size >= 8 * txWatermark)
{
for (i = 0; i < 2 * txWatermark; i++)
{
base->TFDR[i] = *buffer++;
}
size = size - 8 * txWatermark;
}
else
{
for (i = 0; i < (size / 4 + 1); i++)
{
base->TFDR[i] = *buffer++;
}
size = 0;
}
/* Push a watermark level datas into IP TX FIFO. */
base->INTR |= kFLEXSPI_IpTxFifoWatermarkEmpltyFlag;
}
return result;
}
status_t FLEXSPI_ReadBlocking(FLEXSPI_Type *base, uint32_t *buffer, size_t size)
{
uint8_t rxWatermark = ((base->IPRXFCR & FLEXSPI_IPRXFCR_RXWMRK_MASK) >> FLEXSPI_IPRXFCR_RXWMRK_SHIFT) + 1;
uint32_t status;
status_t result = kStatus_Success;
uint32_t i = 0;
/* Send data buffer */
while (size)
{
if (size >= 8 * rxWatermark)
{
/* Wait until there is room in the fifo. This also checks for errors. */
while (!((status = base->INTR) & kFLEXSPI_IpRxFifoWatermarkAvailableFlag))
{
result = FLEXSPI_CheckAndClearError(base, status);
if (result)
{
return result;
}
}
}
else
{
/* Wait fill level. This also checks for errors. */
while (size > ((((base->IPRXFSTS) & FLEXSPI_IPRXFSTS_FILL_MASK) >> FLEXSPI_IPRXFSTS_FILL_SHIFT) * 8U))
{
result = FLEXSPI_CheckAndClearError(base, base->INTR);
if (result)
{
return result;
}
}
}
result = FLEXSPI_CheckAndClearError(base, base->INTR);
if (result)
{
return result;
}
/* Read watermark level data from rx fifo . */
if (size >= 8 * rxWatermark)
{
for (i = 0; i < 2 * rxWatermark; i++)
{
*buffer++ = base->RFDR[i];
}
size = size - 8 * rxWatermark;
}
else
{
for (i = 0; i < (size / 4 + 1); i++)
{
*buffer++ = base->RFDR[i];
}
size = 0;
}
/* Pop out a watermark level datas from IP RX FIFO. */
base->INTR |= kFLEXSPI_IpRxFifoWatermarkAvailableFlag;
}
return result;
}
status_t FLEXSPI_TransferBlocking(FLEXSPI_Type *base, flexspi_transfer_t *xfer)
{
uint32_t configValue = 0;
status_t result = kStatus_Success;
/* Clear sequence pointer before sending data to external devices. */
base->FLSHCR2[xfer->port] |= FLEXSPI_FLSHCR2_CLRINSTRPTR_MASK;
/* Clear former pending status before start this tranfer. */
base->INTR |= FLEXSPI_INTR_AHBCMDERR_MASK | FLEXSPI_INTR_IPCMDERR_MASK | FLEXSPI_INTR_AHBCMDGE_MASK |
FLEXSPI_INTR_IPCMDGE_MASK;
/* Configure base addresss. */
base->IPCR0 = xfer->deviceAddress;
/* Reset fifos. */
base->IPTXFCR |= FLEXSPI_IPTXFCR_CLRIPTXF_MASK;
base->IPRXFCR |= FLEXSPI_IPRXFCR_CLRIPRXF_MASK;
/* Configure data size. */
if ((xfer->cmdType == kFLEXSPI_Read) || (xfer->cmdType == kFLEXSPI_Write) || (xfer->cmdType == kFLEXSPI_Config))
{
configValue = FLEXSPI_IPCR1_IDATSZ(xfer->dataSize);
}
/* Configure sequence ID. */
configValue |= FLEXSPI_IPCR1_ISEQID(xfer->seqIndex) | FLEXSPI_IPCR1_ISEQNUM(xfer->SeqNumber - 1);
base->IPCR1 = configValue;
/* Start Transfer. */
base->IPCMD |= FLEXSPI_IPCMD_TRG_MASK;
if ((xfer->cmdType == kFLEXSPI_Write) || (xfer->cmdType == kFLEXSPI_Config))
{
result = FLEXSPI_WriteBlocking(base, xfer->data, xfer->dataSize);
}
else if (xfer->cmdType == kFLEXSPI_Read)
{
result = FLEXSPI_ReadBlocking(base, xfer->data, xfer->dataSize);
}
else
{
}
/* Wait for bus idle. */
while (!FLEXSPI_GetBusIdleStatus(base))
{
}
if (xfer->cmdType == kFLEXSPI_Command)
{
result = FLEXSPI_CheckAndClearError(base, base->INTR);
}
return result;
}
void FLEXSPI_TransferCreateHandle(FLEXSPI_Type *base,
flexspi_handle_t *handle,
flexspi_transfer_callback_t callback,
void *userData)
{
assert(handle);
uint32_t instance = FLEXSPI_GetInstance(base);
/* Zero handle. */
memset(handle, 0, sizeof(*handle));
/* Set callback and userData. */
handle->completionCallback = callback;
handle->userData = userData;
/* Save the context in global variables to support the double weak mechanism. */
s_flexspiHandle[instance] = handle;
/* Enable NVIC interrupt. */
EnableIRQ(s_flexspiIrqs[instance]);
}
status_t FLEXSPI_TransferNonBlocking(FLEXSPI_Type *base, flexspi_handle_t *handle, flexspi_transfer_t *xfer)
{
uint32_t configValue = 0;
status_t result = kStatus_Success;
assert(handle);
assert(xfer);
/* Check if the I2C bus is idle - if not return busy status. */
if (handle->state != kFLEXSPI_Idle)
{
result = kStatus_FLEXSPI_Busy;
}
else
{
handle->data = xfer->data;
handle->dataSize = xfer->dataSize;
handle->transferTotalSize = xfer->dataSize;
handle->state = (xfer->cmdType == kFLEXSPI_Read) ? kFLEXSPI_BusyRead : kFLEXSPI_BusyWrite;
/* Clear sequence pointer before sending data to external devices. */
base->FLSHCR2[xfer->port] |= FLEXSPI_FLSHCR2_CLRINSTRPTR_MASK;
/* Clear former pending status before start this tranfer. */
base->INTR |= FLEXSPI_INTR_AHBCMDERR_MASK | FLEXSPI_INTR_IPCMDERR_MASK | FLEXSPI_INTR_AHBCMDGE_MASK |
FLEXSPI_INTR_IPCMDGE_MASK;
/* Configure base addresss. */
base->IPCR0 = xfer->deviceAddress;
/* Reset fifos. */
base->IPTXFCR |= FLEXSPI_IPTXFCR_CLRIPTXF_MASK;
base->IPRXFCR |= FLEXSPI_IPRXFCR_CLRIPRXF_MASK;
/* Configure data size. */
if ((xfer->cmdType == kFLEXSPI_Read) || (xfer->cmdType == kFLEXSPI_Write))
{
configValue = FLEXSPI_IPCR1_IDATSZ(xfer->dataSize);
}
/* Configure sequence ID. */
configValue |= FLEXSPI_IPCR1_ISEQID(xfer->seqIndex) | FLEXSPI_IPCR1_ISEQNUM(xfer->SeqNumber - 1);
base->IPCR1 = configValue;
/* Start Transfer. */
base->IPCMD |= FLEXSPI_IPCMD_TRG_MASK;
if (handle->state == kFLEXSPI_BusyRead)
{
FLEXSPI_EnableInterrupts(base, kFLEXSPI_IpRxFifoWatermarkAvailableFlag |
kFLEXSPI_SequenceExecutionTimeoutFlag |
kFLEXSPI_IpCommandSequenceErrorFlag |
kFLEXSPI_IpCommandGrantTimeoutFlag | kFLEXSPI_IpCommandExcutionDoneFlag);
}
else
{
FLEXSPI_EnableInterrupts(base, kFLEXSPI_IpTxFifoWatermarkEmpltyFlag |
kFLEXSPI_SequenceExecutionTimeoutFlag |
kFLEXSPI_IpCommandSequenceErrorFlag |
kFLEXSPI_IpCommandGrantTimeoutFlag | kFLEXSPI_IpCommandExcutionDoneFlag);
}
}
return result;
}
status_t FLEXSPI_TransferGetCount(FLEXSPI_Type *base, flexspi_handle_t *handle, size_t *count)
{
assert(handle);
status_t result = kStatus_Success;
if (handle->state == kFLEXSPI_Idle)
{
result = kStatus_NoTransferInProgress;
}
else
{
*count = handle->transferTotalSize - handle->dataSize;
}
return result;
}
void FLEXSPI_TransferAbort(FLEXSPI_Type *base, flexspi_handle_t *handle)
{
assert(handle);
FLEXSPI_DisableInterrupts(base, kIrqFlags);
handle->state = kFLEXSPI_Idle;
}
void FLEXSPI_TransferHandleIRQ(FLEXSPI_Type *base, flexspi_handle_t *handle)
{
uint8_t status;
status_t result;
uint8_t txWatermark;
uint8_t rxWatermark;
uint8_t i = 0;
status = base->INTR;
result = FLEXSPI_CheckAndClearError(base, status);
if ((result != kStatus_Success) && (handle->completionCallback != NULL))
{
FLEXSPI_TransferAbort(base, handle);
if (handle->completionCallback)
{
handle->completionCallback(base, handle, result, handle->userData);
}
return;
}
if ((status & kFLEXSPI_IpRxFifoWatermarkAvailableFlag) && (handle->state == kFLEXSPI_BusyRead))
{
rxWatermark = ((base->IPRXFCR & FLEXSPI_IPRXFCR_RXWMRK_MASK) >> FLEXSPI_IPRXFCR_RXWMRK_SHIFT) + 1;
/* Read watermark level data from rx fifo . */
if (handle->dataSize >= 8 * rxWatermark)
{
/* Read watermark level data from rx fifo . */
for (i = 0; i < 2 * rxWatermark; i++)
{
*handle->data++ = base->RFDR[i];
}
handle->dataSize = handle->dataSize - 8 * rxWatermark;
}
else
{
for (i = 0; i < (handle->dataSize / 4 + 1); i++)
{
*handle->data++ = base->RFDR[i];
}
handle->dataSize = 0;
}
/* Pop out a watermark level datas from IP RX FIFO. */
base->INTR |= kFLEXSPI_IpRxFifoWatermarkAvailableFlag;
}
if (status & kFLEXSPI_IpCommandExcutionDoneFlag)
{
base->INTR |= kFLEXSPI_IpCommandExcutionDoneFlag;
FLEXSPI_TransferAbort(base, handle);
if (handle->completionCallback)
{
handle->completionCallback(base, handle, kStatus_Success, handle->userData);
}
}
/* TX FIFO empty interrupt, push watermark level data into tx FIFO. */
if ((status & kFLEXSPI_IpTxFifoWatermarkEmpltyFlag) && (handle->state == kFLEXSPI_BusyWrite))
{
if (handle->dataSize)
{
txWatermark = ((base->IPTXFCR & FLEXSPI_IPTXFCR_TXWMRK_MASK) >> FLEXSPI_IPTXFCR_TXWMRK_SHIFT) + 1;
/* Write watermark level data into tx fifo . */
if (handle->dataSize >= 8 * txWatermark)
{
for (i = 0; i < 2 * txWatermark; i++)
{
base->TFDR[i] = *handle->data++;
}
handle->dataSize = handle->dataSize - 8 * txWatermark;
}
else
{
for (i = 0; i < (handle->dataSize / 4 + 1); i++)
{
base->TFDR[i] = *handle->data++;
}
handle->dataSize = 0;
}
/* Push a watermark level datas into IP TX FIFO. */
base->INTR |= kFLEXSPI_IpTxFifoWatermarkEmpltyFlag;
}
}
else
{
}
}
#if defined(FLEXSPI)
void FLEXSPI_DriverIRQHandler(void)
{
FLEXSPI_TransferHandleIRQ(FLEXSPI, s_flexspiHandle[0]);
/* Add for ARM errata 838869, affects Cortex-M4, Cortex-M4F Store immediate overlapping
exception return operation might vector to incorrect interrupt */
#if defined __CORTEX_M && (__CORTEX_M == 4U)
__DSB();
#endif
}
#endif
#if defined(FLEXSPI0)
void FLEXSPI0_DriverIRQHandler(void)
{
FLEXSPI_TransferHandleIRQ(FLEXSPI0, s_flexspiHandle[0]);
/* Add for ARM errata 838869, affects Cortex-M4, Cortex-M4F Store immediate overlapping
exception return operation might vector to incorrect interrupt */
#if defined __CORTEX_M && (__CORTEX_M == 4U)
__DSB();
#endif
}
#endif
#if defined(FLEXSPI1)
void FLEXSPI1_DriverIRQHandler(void)
{
FLEXSPI_TransferHandleIRQ(FLEXSPI1, s_flexspiHandle[1]);
/* Add for ARM errata 838869, affects Cortex-M4, Cortex-M4F Store immediate overlapping
exception return operation might vector to incorrect interrupt */
#if defined __CORTEX_M && (__CORTEX_M == 4U)
__DSB();
#endif
}
#endif
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