/*!
* @brief Main function
*/
int main(void)
{
uint32_t srcAddr[BUFFER_LENGTH] = {0x01U, 0x02U, 0x03U, 0x04U, 0x05U, 0x06U, 0x07U, 0x08U};
uint32_t destAddr[BUFFER_LENGTH] = {0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U};
uint32_t i = 0;
edma_transfer_config_t transferConfig;
edma_tcd_t *tcdMemoryPoolPtr;
edma_config_t userConfig;
BOARD_InitPins();
BOARD_BootClockRUN();
BOARD_InitDebugConsole();
/* Print source buffer */
PRINTF("EDMA memory to memory transfer example begin.\r\n\r\n");
PRINTF("Destination Buffer:\r\n");
for (i = 0; i < BUFFER_LENGTH; i++)
{
PRINTF("%d\t", destAddr[i]);
}
/* Configure DMAMUX */
DMAMUX_Init(DMAMUX0);
DMAMUX_SetSource(DMAMUX0, 0, 63);
DMAMUX_EnableChannel(DMAMUX0, 0);
/* Configure EDMA one shot transfer */
/*
* userConfig.enableRoundRobinArbitration = false;
* userConfig.enableHaltOnError = true;
* userConfig.enableContinuousLinkMode = false;
* userConfig.enableDebugMode = false;
*/
EDMA_GetDefaultConfig(&userConfig);
EDMA_Init(DMA0, &userConfig);
EDMA_CreateHandle(&g_EDMA_Handle, DMA0, 0);
EDMA_SetCallback(&g_EDMA_Handle, EDMA_Callback, NULL);
EDMA_ResetChannel(g_EDMA_Handle.base, g_EDMA_Handle.channel);
/* Allocate TCD memory poll */
tcdMemoryPoolPtr = (edma_tcd_t *)malloc(sizeof(edma_tcd_t) * (TCD_QUEUE_SIZE + 1));
if (tcdMemoryPoolPtr != NULL)
{
tcdMemoryPoolPtr = (edma_tcd_t *)((uint32_t)(tcdMemoryPoolPtr + 1) & (~0x1FU));
EDMA_InstallTCDMemory(&g_EDMA_Handle, tcdMemoryPoolPtr, TCD_QUEUE_SIZE);
/* Configure and submit transfer structure 1 */
EDMA_PrepareTransfer(&transferConfig, srcAddr, sizeof(srcAddr[0]), destAddr, sizeof(destAddr[0]),
sizeof(srcAddr[0]), sizeof(srcAddr[0]) * HALF_BUFFER_LENGTH, kEDMA_MemoryToMemory);
EDMA_SubmitTransfer(&g_EDMA_Handle, &transferConfig);
/* Configure and submit transfer structure 2 */
EDMA_PrepareTransfer(&transferConfig, &srcAddr[4], sizeof(srcAddr[0]), &destAddr[4], sizeof(destAddr[0]),
sizeof(srcAddr[0]), sizeof(srcAddr[0]) * HALF_BUFFER_LENGTH, kEDMA_MemoryToMemory);
EDMA_SubmitTransfer(&g_EDMA_Handle, &transferConfig);
}
EDMA_StartTransfer(&g_EDMA_Handle);
/* Wait for EDMA transfer finish */
while (g_Transfer_Done != true)
{
}
/* Print destination buffer */
PRINTF("\r\n\r\nEDMA memory to memory transfer example finish.\r\n\r\n");
PRINTF("Destination Buffer:\r\n");
for (i = 0; i < BUFFER_LENGTH; i++)
{
PRINTF("%d\t", destAddr[i]);
}
while (1)
{
}
}
static rt_err_t icodec_init(struct rt_audio_device *audio)
{
sai_config_t config;
uint32_t mclkSourceClockHz = 0U;
edma_config_t dmaConfig = {0};
lpi2c_master_config_t i2cConfig = {0};
uint32_t i2cSourceClock;
clock_audio_pll_config_t audioPllConfig = {32, 1, 77, 100};
struct imxcodec *icodec = audio->parent.user_data;
sai_transfer_format_t *format;
icodec->sai = DEMO_SAI;
format = &icodec->format;
_InitPins();
CLOCK_InitAudioPll(&audioPllConfig);
/*Clock setting for LPI2C*/
CLOCK_SetMux(kCLOCK_Lpi2cMux, DEMO_LPI2C_CLOCK_SOURCE_SELECT);
CLOCK_SetDiv(kCLOCK_Lpi2cDiv, DEMO_LPI2C_CLOCK_SOURCE_DIVIDER);
/*Clock setting for SAI1*/
CLOCK_SetMux(kCLOCK_Sai1Mux, DEMO_SAI1_CLOCK_SOURCE_SELECT);
CLOCK_SetDiv(kCLOCK_Sai1PreDiv, DEMO_SAI1_CLOCK_SOURCE_PRE_DIVIDER);
CLOCK_SetDiv(kCLOCK_Sai1Div, DEMO_SAI1_CLOCK_SOURCE_DIVIDER);
/*Enable MCLK clock*/
BOARD_EnableSaiMclkOutput(true);
/* Create EDMA handle */
EDMA_GetDefaultConfig(&dmaConfig);
EDMA_Init(EXAMPLE_DMA, &dmaConfig);
EDMA_CreateHandle(&icodec->dmaHandle, EXAMPLE_DMA, EXAMPLE_CHANNEL);
DMAMUX_Init(DMAMUX0);
DMAMUX_SetSource(DMAMUX0, EXAMPLE_CHANNEL, EXAMPLE_SAI_TX_SOURCE);
DMAMUX_EnableChannel(DMAMUX0, EXAMPLE_CHANNEL);
/* Init SAI module */
SAI_TxGetDefaultConfig(&config);
config.protocol = kSAI_BusLeftJustified;
SAI_TxInit(DEMO_SAI, &config);
/* Configure the audio format */
format->bitWidth = kSAI_WordWidth16bits;
format->channel = 0U;
format->sampleRate_Hz = kSAI_SampleRate48KHz;
format->masterClockHz = DEMO_SAI_CLK_FREQ;
format->protocol = config.protocol;
format->stereo = kSAI_Stereo;
format->isFrameSyncCompact = 0;
format->watermark = FSL_FEATURE_SAI_FIFO_COUNT / 2U;
/* Configure Sgtl5000 I2C */
icodec->codecHandle.base = DEMO_I2C;
icodec->codecHandle.i2cHandle = &icodec->i2cHandle;
i2cSourceClock = DEMO_I2C_CLK_FREQ;
LPI2C_MasterGetDefaultConfig(&i2cConfig);
LPI2C_MasterInit(DEMO_I2C, &i2cConfig, i2cSourceClock);
LPI2C_MasterTransferCreateHandle(DEMO_I2C, &icodec->i2cHandle, NULL, NULL);
WM8960_Init(&icodec->codecHandle, NULL);
WM8960_ConfigDataFormat(&icodec->codecHandle, format->masterClockHz, format->sampleRate_Hz, format->bitWidth);
SAI_TransferTxCreateHandleEDMA(icodec->sai, &icodec->txHandle, saidma_callback, audio, &icodec->dmaHandle);
mclkSourceClockHz = DEMO_SAI_CLK_FREQ;
SAI_TransferTxSetFormatEDMA(icodec->sai, &icodec->txHandle, format, mclkSourceClockHz, format->masterClockHz);
return RT_EOK;
}
/*!
* @brief Main function
*/
int main(void)
{
BOARD_InitPins();
BOARD_BootClockRUN();
BOARD_InitDebugConsole();
PRINTF("DSPI edma example start.\r\n");
PRINTF("This example use one dspi instance as master and another as slave on one board.\r\n");
PRINTF("Master use edma way , slave uses interrupt.\r\n");
PRINTF("Please make sure you make the correct line connection. Basically, the connection is: \r\n");
PRINTF("DSPI_master -- DSPI_slave \r\n");
PRINTF(" CLK -- CLK \r\n");
PRINTF(" PCS -- PCS \r\n");
PRINTF(" SOUT -- SIN \r\n");
PRINTF(" SIN -- SOUT \r\n");
/* DMA Mux setting and EDMA init */
uint32_t masterRxChannel, masterIntermediaryChannel, masterTxChannel;
uint32_t slaveRxChannel, slaveTxChannel;
edma_config_t userConfig;
masterRxChannel = 0U;
masterIntermediaryChannel = 1U;
masterTxChannel = 2U;
slaveRxChannel = 3U;
slaveTxChannel = 4U;
/* DMA MUX init */
DMAMUX_Init(EXAMPLE_DSPI_MASTER_DMA_MUX_BASEADDR);
#if (defined EXAMPLE_DSPI_MASTER_DMA_MUX_BASE) && (defined EXAMPLE_DSPI_SLAVE_DMA_MUX_BASE) && \
(EXAMPLE_DSPI_MASTER_DMA_MUX_BASE != EXAMPLE_DSPI_SLAVE_DMA_MUX_BASE)
DMAMUX_Init(EXAMPLE_DSPI_SLAVE_DMA_MUX_BASEADDR);
#endif
DMAMUX_SetSource(EXAMPLE_DSPI_MASTER_DMA_MUX_BASEADDR, masterRxChannel, EXAMPLE_DSPI_MASTER_DMA_RX_REQUEST_SOURCE);
DMAMUX_EnableChannel(EXAMPLE_DSPI_MASTER_DMA_MUX_BASEADDR, masterRxChannel);
#if (defined EXAMPLE_DSPI_MASTER_DMA_TX_REQUEST_SOURCE)
DMAMUX_SetSource(EXAMPLE_DSPI_MASTER_DMA_MUX_BASEADDR, masterTxChannel, EXAMPLE_DSPI_MASTER_DMA_TX_REQUEST_SOURCE);
DMAMUX_EnableChannel(EXAMPLE_DSPI_MASTER_DMA_MUX_BASEADDR, masterTxChannel);
#endif
DMAMUX_SetSource(EXAMPLE_DSPI_SLAVE_DMA_MUX_BASEADDR, slaveRxChannel, EXAMPLE_DSPI_SLAVE_DMA_RX_REQUEST_SOURCE);
DMAMUX_EnableChannel(EXAMPLE_DSPI_SLAVE_DMA_MUX_BASEADDR, slaveRxChannel);
#if (defined EXAMPLE_DSPI_SLAVE_DMA_TX_REQUEST_SOURCE)
DMAMUX_SetSource(EXAMPLE_DSPI_SLAVE_DMA_MUX_BASEADDR, slaveTxChannel, EXAMPLE_DSPI_SLAVE_DMA_TX_REQUEST_SOURCE);
DMAMUX_EnableChannel(EXAMPLE_DSPI_SLAVE_DMA_MUX_BASEADDR, slaveTxChannel);
#endif
/* EDMA init*/
/*
* userConfig.enableRoundRobinArbitration = false;
* userConfig.enableHaltOnError = true;
* userConfig.enableContinuousLinkMode = false;
* userConfig.enableDebugMode = false;
*/
EDMA_GetDefaultConfig(&userConfig);
EDMA_Init(EXAMPLE_DSPI_MASTER_DMA_BASEADDR, &userConfig);
#if (defined EXAMPLE_DSPI_SLAVE_DMA_BASE) && (defined EXAMPLE_DSPI_MASTER_DMA_BASE) && \
(EXAMPLE_DSPI_SLAVE_DMA_BASE != EXAMPLE_DSPI_MASTER_DMA_BASE)
EDMA_Init(EXAMPLE_DSPI_SLAVE_DMA_BASEADDR, &userConfig);
#endif
/*DSPI init*/
uint32_t srcClock_Hz;
uint32_t errorCount;
uint32_t i;
dspi_master_config_t masterConfig;
dspi_slave_config_t slaveConfig;
dspi_transfer_t masterXfer;
dspi_transfer_t slaveXfer;
/*Master config*/
masterConfig.whichCtar = kDSPI_Ctar0;
masterConfig.ctarConfig.baudRate = TRANSFER_BAUDRATE;
masterConfig.ctarConfig.bitsPerFrame = 8U;
masterConfig.ctarConfig.cpol = kDSPI_ClockPolarityActiveHigh;
masterConfig.ctarConfig.cpha = kDSPI_ClockPhaseFirstEdge;
masterConfig.ctarConfig.direction = kDSPI_MsbFirst;
masterConfig.ctarConfig.pcsToSckDelayInNanoSec = 1000000000U / TRANSFER_BAUDRATE;
masterConfig.ctarConfig.lastSckToPcsDelayInNanoSec = 1000000000U / TRANSFER_BAUDRATE;
masterConfig.ctarConfig.betweenTransferDelayInNanoSec = 1000000000U / TRANSFER_BAUDRATE;
masterConfig.whichPcs = EXAMPLE_DSPI_MASTER_PCS_FOR_INIT;
masterConfig.pcsActiveHighOrLow = kDSPI_PcsActiveLow;
masterConfig.enableContinuousSCK = false;
masterConfig.enableRxFifoOverWrite = false;
masterConfig.enableModifiedTimingFormat = false;
masterConfig.samplePoint = kDSPI_SckToSin0Clock;
srcClock_Hz = CLOCK_GetFreq(DSPI_MASTER_CLK_SRC);
DSPI_MasterInit(EXAMPLE_DSPI_MASTER_BASEADDR, &masterConfig, srcClock_Hz);
/*Slave config*/
slaveConfig.whichCtar = kDSPI_Ctar0;
slaveConfig.ctarConfig.bitsPerFrame = masterConfig.ctarConfig.bitsPerFrame;
slaveConfig.ctarConfig.cpol = masterConfig.ctarConfig.cpol;
slaveConfig.ctarConfig.cpha = masterConfig.ctarConfig.cpha;
slaveConfig.enableContinuousSCK = masterConfig.enableContinuousSCK;
slaveConfig.enableRxFifoOverWrite = masterConfig.enableRxFifoOverWrite;
slaveConfig.enableModifiedTimingFormat = masterConfig.enableModifiedTimingFormat;
slaveConfig.samplePoint = masterConfig.samplePoint;
DSPI_SlaveInit(EXAMPLE_DSPI_SLAVE_BASEADDR, &slaveConfig);
/* Set up the transfer data */
for (i = 0U; i < TRANSFER_SIZE; i++)
{
masterTxData[i] = i % 256U;
masterRxData[i] = 0U;
slaveTxData[i] = ~masterTxData[i];
slaveRxData[i] = 0U;
}
/* Set up dspi slave first */
memset(&(dspiEdmaSlaveRxRegToRxDataHandle), 0, sizeof(dspiEdmaSlaveRxRegToRxDataHandle));
memset(&(dspiEdmaSlaveTxDataToTxRegHandle), 0, sizeof(dspiEdmaSlaveTxDataToTxRegHandle));
EDMA_CreateHandle(&(dspiEdmaSlaveRxRegToRxDataHandle), EXAMPLE_DSPI_SLAVE_DMA_BASEADDR, slaveRxChannel);
EDMA_CreateHandle(&(dspiEdmaSlaveTxDataToTxRegHandle), EXAMPLE_DSPI_SLAVE_DMA_BASEADDR, slaveTxChannel);
isTransferCompleted = false;
DSPI_SlaveTransferCreateHandleEDMA(EXAMPLE_DSPI_SLAVE_BASEADDR, &g_dspi_edma_s_handle, DSPI_SlaveUserCallback, NULL,
&dspiEdmaSlaveRxRegToRxDataHandle, &dspiEdmaSlaveTxDataToTxRegHandle);
slaveXfer.txData = slaveTxData;
slaveXfer.rxData = slaveRxData;
slaveXfer.dataSize = TRANSFER_SIZE;
slaveXfer.configFlags = kDSPI_SlaveCtar0;
if (kStatus_Success != DSPI_SlaveTransferEDMA(EXAMPLE_DSPI_SLAVE_BASEADDR, &g_dspi_edma_s_handle, &slaveXfer))
{
PRINTF("There is error when start DSPI_SlaveTransferEDMA \r\n");
}
/* Set up dspi master */
memset(&(dspiEdmaMasterRxRegToRxDataHandle), 0, sizeof(dspiEdmaMasterRxRegToRxDataHandle));
memset(&(dspiEdmaMasterTxDataToIntermediaryHandle), 0, sizeof(dspiEdmaMasterTxDataToIntermediaryHandle));
memset(&(dspiEdmaMasterIntermediaryToTxRegHandle), 0, sizeof(dspiEdmaMasterIntermediaryToTxRegHandle));
EDMA_CreateHandle(&(dspiEdmaMasterRxRegToRxDataHandle), EXAMPLE_DSPI_MASTER_DMA_BASEADDR, masterRxChannel);
EDMA_CreateHandle(&(dspiEdmaMasterTxDataToIntermediaryHandle), EXAMPLE_DSPI_MASTER_DMA_BASEADDR,
masterIntermediaryChannel);
EDMA_CreateHandle(&(dspiEdmaMasterIntermediaryToTxRegHandle), EXAMPLE_DSPI_MASTER_DMA_BASEADDR, masterTxChannel);
DSPI_MasterTransferCreateHandleEDMA(EXAMPLE_DSPI_MASTER_BASEADDR, &g_dspi_edma_m_handle, DSPI_MasterUserCallback,
NULL, &dspiEdmaMasterRxRegToRxDataHandle,
&dspiEdmaMasterTxDataToIntermediaryHandle,
&dspiEdmaMasterIntermediaryToTxRegHandle);
/* Start master transfer */
masterXfer.txData = masterTxData;
masterXfer.rxData = masterRxData;
masterXfer.dataSize = TRANSFER_SIZE;
masterXfer.configFlags = kDSPI_MasterCtar0 | EXAMPLE_DSPI_MASTER_PCS_FOR_TRANSFER | kDSPI_MasterPcsContinuous;
if (kStatus_Success != DSPI_MasterTransferEDMA(EXAMPLE_DSPI_MASTER_BASEADDR, &g_dspi_edma_m_handle, &masterXfer))
{
PRINTF("There is error when start DSPI_MasterTransferEDMA \r\n ");
}
/* Wait until transfer completed */
while (!isTransferCompleted)
{
}
/* Check the data */
errorCount = 0U;
for (i = 0U; i < TRANSFER_SIZE; i++)
{
if (masterTxData[i] != slaveRxData[i])
{
errorCount++;
}
if (slaveTxData[i] != masterRxData[i])
{
errorCount++;
}
}
if (errorCount == 0)
{
PRINTF("DSPI transfer all data matched! \r\n");
}
else
{
PRINTF("Error occured in DSPI transfer ! \r\n");
}
DSPI_Deinit(EXAMPLE_DSPI_MASTER_BASEADDR);
DSPI_Deinit(EXAMPLE_DSPI_SLAVE_BASEADDR);
while (1)
{
}
}