/*!
* @brief SPI master DMA non-blocking.
*
* Thid function uses SPI master to send an array to slave
* and receive the array back from slave,
* then compare whether the two buffers are the same.
*/
int main (void)
{
uint8_t loopCount = 0;
uint32_t j;
uint32_t failCount = 0;
uint32_t calculatedBaudRate;
spi_dma_master_state_t spiDmaMasterState;
dma_state_t state;
spi_dma_master_user_config_t userDmaConfig =
{
#if FSL_FEATURE_SPI_16BIT_TRANSFERS
.bitCount = kSpi8BitMode,
#endif
.polarity = kSpiClockPolarity_ActiveHigh,
.phase = kSpiClockPhase_FirstEdge,
.direction = kSpiMsbFirst,
.bitsPerSec = TRANSFER_BAUDRATE
};
// init the hardware, this also sets up up the SPI pins for each specific SoC
hardware_init();
// Init OSA layer.
OSA_Init();
PRINTF("\r\nSPI board to board dma-non-blocking example");
PRINTF("\r\nThis example run on instance %d", (uint32_t)SPI_MASTER_INSTANCE);
PRINTF("\r\nBe sure master's SPI%d and slave's SPI%d are connected\r\n",
(uint32_t)SPI_MASTER_INSTANCE, (uint32_t)SPI_MASTER_INSTANCE);
// Set up and init the master
DMA_DRV_Init(&state);
// Init the dspi module for eDMA operation
SPI_DRV_DmaMasterInit(SPI_MASTER_INSTANCE, &spiDmaMasterState);
SPI_DRV_DmaMasterConfigureBus(SPI_MASTER_INSTANCE,
&userDmaConfig,
&calculatedBaudRate);
if (calculatedBaudRate > userDmaConfig.bitsPerSec)
{
PRINTF("\r\n**Something failed in the master bus config \r\n");
return -1;
}
else
{
PRINTF("\r\nBaud rate in Hz is: %d\r\n", calculatedBaudRate);
}
while(1)
{
// Initialize the source buffer
for (j = 0; j < TRANSFER_SIZE; j++)
{
s_spiSourceBuffer[j] = j + loopCount;
}
// Reset the sink buffer
for (j = 0; j < TRANSFER_SIZE; j++)
{
s_spiSinkBuffer[j] = 0;
}
// Start the transfer
SPI_DRV_DmaMasterTransferBlocking(SPI_MASTER_INSTANCE, NULL, s_spiSourceBuffer,
NULL, TRANSFER_SIZE, MASTER_TRANSFER_TIMEOUT);
while (SPI_DRV_DmaMasterGetTransferStatus(SPI_MASTER_INSTANCE, NULL) == kStatus_SPI_Busy)
{
}
// Delay sometime to wait slave receive and send back data
OSA_TimeDelay(500U);
//Receive data from slave
SPI_DRV_DmaMasterTransfer(SPI_MASTER_INSTANCE, NULL, NULL,
s_spiSinkBuffer, TRANSFER_SIZE);
while (SPI_DRV_DmaMasterGetTransferStatus(SPI_MASTER_INSTANCE, NULL) == kStatus_SPI_Busy)
{
}
// Verify the contents of the master sink buffer
// refer to the slave driver for the expected data pattern
failCount = 0; // reset failCount variable
for (j = 0; j < TRANSFER_SIZE; j++)
{
if (s_spiSinkBuffer[j] != s_spiSourceBuffer[j])
{
failCount++;
}
}
// Print out transmit buffer.
PRINTF("\r\nMaster transmit:");
for (j = 0; j < TRANSFER_SIZE; j++)
{
// Print 16 numbers in a line.
if ((j & 0x0F) == 0)
{
PRINTF("\r\n ");
}
PRINTF(" %02X", s_spiSourceBuffer[j]);
}
// Print out receive buffer.
PRINTF("\r\nMaster receive:");
for (j = 0; j < TRANSFER_SIZE; j++)
{
// Print 16 numbers in a line.
if ((j & 0x0F) == 0)
{
PRINTF("\r\n ");
}
PRINTF(" %02X", s_spiSinkBuffer[j]);
}
if (failCount == 0)
{
PRINTF("\r\n Spi master transfer succeed! \r\n");
}
else
{
PRINTF("\r\n **failures detected in Spi master transfer! \r\n");
}
// Wait for press any key.
PRINTF("\r\nPress any key to run again\r\n");
GETCHAR();
loopCount++;
}
}
// Setup the board as a spi master
int main (void)
{
uint8_t loopCount = 0;
uint32_t j;
uint32_t failCount = 0;
uint8_t * pRxBuff;
uint32_t calculatedBaudRate;
spi_master_state_t spiMasterState;
spi_dma_master_state_t spiDmaMasterState;
dma_state_t state;
spi_dma_master_user_config_t userDmaConfig =
{
#if FSL_FEATURE_SPI_16BIT_TRANSFERS
.bitCount = kSpi8BitMode,
#endif
.polarity = kSpiClockPolarity_ActiveHigh,
.phase = kSpiClockPhase_FirstEdge,
.direction = kSpiMsbFirst,
.bitsPerSec = TRANSFER_BAUDRATE
};
// init the hardware, this also sets up up the SPI pins for each specific SoC
hardware_init();
dbg_uart_init();
OSA_Init();
printf("\r\n SPI board to board dma-blocking example");
printf("\r\n This example run on instance 0 ");
printf("\r\n Be sure master's SPI0 and slave's SPI0 are connected ");
//USER CONFIGURABLE OPTION FOR SPI INSTANCE
// Configure SPI pin
configure_spi_pins(SPI_MASTER_INSTANCE);
printf("\rIMPORTANT, MAKE SURE TO FIRST SET UP THE SPI SLAVE BOARD!\r\n");
//USER CONFIGURABLE OPTION FOR RXBUFF
pRxBuff = s_spiSinkBuffer;
// Set up and init the master
DMA_DRV_Init(&state);
// Init the dspi module for eDMA operation
SPI_DRV_DmaMasterInit(SPI_MASTER_INSTANCE, &spiDmaMasterState);
SPI_DRV_DmaMasterConfigureBus(SPI_MASTER_INSTANCE,
&userDmaConfig,
&calculatedBaudRate);
if (calculatedBaudRate > userDmaConfig.bitsPerSec)
{
printf("\r**Something failed in the master bus config \r\n");
return -1;
}
printf("\r\nSpi master SYNC test with various baud rates \r\n");
printf("\r\nBaudRate set to %dHz\r\n", calculatedBaudRate);
while(1)
{
// Initialize the source buffer
for (j = 0; j < TRANSFER_SIZE; j++)
{
s_spiSourceBuffer[j] = j + loopCount;
}
// Reset the sink buffer
for (j = 0; j < TRANSFER_SIZE; j++)
{
s_spiSinkBuffer[j] = 0;
}
/* Start the transfer */
if (SPI_DRV_DmaMasterTransferBlocking(SPI_MASTER_INSTANCE, NULL, s_spiSourceBuffer,
NULL, TRANSFER_SIZE, MASTER_TRANSFER_TIMEOUT) == kStatus_SPI_Timeout)
{
printf("\r**Sync transfer timed-out \r\n");
}
// Delay sometime to wait slave receive and send back data
OSA_TimeDelay(500U);
if (SPI_DRV_DmaMasterTransferBlocking(SPI_MASTER_INSTANCE, NULL, NULL,
s_spiSinkBuffer, TRANSFER_SIZE, MASTER_TRANSFER_TIMEOUT) == kStatus_SPI_Timeout)
{
printf("\r**Sync transfer timed-out \r\n");
}
// Verify the contents of the master sink buffer
// refer to the slave driver for the expected data pattern
failCount = 0; // reset failCount variable
for (j = 0; j < TRANSFER_SIZE; j++)
{
if (s_spiSinkBuffer[j] != s_spiSourceBuffer[j])
{
failCount++;
}
}
if (failCount == 0)
{
printf("\r\nMaster transmit:");
for (j = 0; j < TRANSFER_SIZE; j++)
{
if (j%16 == 0)
{
printf("\r\n ");
}
printf(" %02X", s_spiSourceBuffer[j]);
}
printf("\r\nMaster receive:");
for (j = 0; j < TRANSFER_SIZE; j++)
{
if (j%16 == 0)
{
printf("\r\n ");
}
printf(" %02X", s_spiSinkBuffer[j]);
}
printf("\r\n");
printf("\r Spi master blocking transfer succeed! \r\n");
}
else
{
printf("\r\nSource buffer:");
for (j = 0; j < TRANSFER_SIZE; j++)
{
if (j%16 == 0)
{
printf("\r\n ");
}
printf(" %02X", s_spiSourceBuffer[j]);
}
printf("\r\nSink buffer:");
for (j = 0; j < TRANSFER_SIZE; j++)
{
if (j%16 == 0)
{
printf("\r\n ");
}
printf(" %02X", s_spiSinkBuffer[j]);
}
printf("\r\n");
printf("\r **failures detected in Spi master blocking transfer! \r\n");
}
// Wait for press any key.
printf("\r\nPress any key to run again\r\n");
getchar();
loopCount++;
}
}