Hello guys,

I am working on configuring a slave device with ADSP-BF538F and I am able to generate SPI clock and Slave select. The isssue is that I find no signal getting generated on the MOSI pin. I checked the return value of submitbuffer function which is not zero, so I feel probably submitbuffer is the culprit.

Here is the code any valuable suggestions would be of great help.

Wishing you a beautiful day ahead,

Thank you.
K.Ketan

int SPI0(void)
{

/* flag indicating that a SPI transceiver is available */
static bool bAvailable = false;

/* pointer to store transceiver */
ADI_SPI_TRANSCEIVER *pTrans;

/* SPI driver handle */
ADI_SPI_HANDLE hSPI0Device;

/* SPI driver memory */
uint8_t driverMemory[ADI_SPI_INT_MEMORY_SIZE];

/* driver API result code */
ADI_SPI_RESULT result;

/* transceiver buffers */
uint8_t Prologue[4] = {0x00, 0x01, 0x02, 0x03};
uint8_t TxBuffer[8] = {0x00, 0x01, 0x02, 0x03, 0x00, 0x01, 0x02, 0x03};
uint8_t RxBuffer[8];

/* transceiver configurations */
ADI_SPI_TRANSCEIVER Transceiver1 = {&Prologue[0], 4, &TxBuffer[0],8, NULL, 0};
ADI_SPI_TRANSCEIVER Transceiver2 = {NULL, 4, &TxBuffer[0],8, NULL, 0};

/* open the SPI driver */
result = adi_spi_Open(0, driverMemory,ADI_SPI_DMA_MEMORY_SIZE, &hSPI0Device);

/* Set master */
result = adi_spi_SetMaster( hSPI0Device,true);

/* Set slave select using hardware*/
result = adi_spi_SetHwSlaveSelect( hSPI0Device, true);

/* Selecting slave1 as the device*/
result = adi_spi_SetSlaveSelect( hSPI0Device,ADI_SPI_SSEL_ENABLE1);

/* Setting the word size of 8 bytes*/
result = adi_spi_SetWordSize( hSPI0Device, ADI_SPI_TRANSFER_8BIT);

/* Setting the clock frequency of spi The frequency of the SPI clock is calculated by SCLK / 2* (Baud=3)*/
result = adi_spi_SetClock( hSPI0Device, 20);

/* No call backs required*/
result = adi_spi_RegisterCallback(hSPI0Device, NULL, NULL);

/* Disable DMA */
result = adi_spi_EnableDmaMode(hSPI0Device, false);

/* submit the SPI transceiver's buffers */

result = adi_spi_SubmitBuffer(hSPI0Device, &Transceiver1);
//result = adi_spi_SubmitBuffer(hSPI0Device, &Transceiver2);
//result = adi_spi_ReadWrite(hSPI1Device, &Transceiver1);
/* wait here until a transceiver is available */
while(bAvailable == false)
{
result = adi_spi_IsBufferAvailable(hSPI0Device, &bAvailable);
}

/* fetch the transceiver buffer just processed */
result = adi_spi_GetBuffer(hSPI0Device, &pTrans);

/* close the SPI driver */
result = adi_spi_Close(hSPI0Device);

return 0;
}
Posted by: k...@gmail.com

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