int init_spi(XSpi *SpiInstancePtr){
int Status;
XSpi_Config *ConfigPtr; /* Pointer to Configuration data */
ConfigPtr = XSpi_LookupConfig(SPI_DEVICE_ID);
if (ConfigPtr == NULL) {
return XST_DEVICE_NOT_FOUND;
}
Status = XSpi_CfgInitialize(SpiInstancePtr, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
Status = XSpi_SelfTest(SpiInstancePtr);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
if (SpiInstancePtr->SpiMode != XSP_STANDARD_MODE) {
return XST_SUCCESS;
}
Status = XSpi_SetOptions(SpiInstancePtr, XSP_MASTER_OPTION);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
XSpi_Start(SpiInstancePtr);
XSpi_IntrGlobalDisable(SpiInstancePtr);
return XST_SUCCESS;
}
/**
*
* This function does a selftest and loopback test on the SPI device and
* XSpi driver as an example. The purpose of this function is to illustrate
* how to use the XSpi component.
*
*
* @param DeviceId is the XPAR_<SPI_instance>_DEVICE_ID value from
* xparameters.h
*
* @return XST_SUCCESS if successful, XST_FAILURE if unsuccessful
*
* @note None
*
****************************************************************************/
int SpiSelfTestExample(u16 DeviceId)
{
int Status;
XSpi_Config *ConfigPtr; /* Pointer to Configuration data */
/*
* Initialize the SPI driver so that it is ready to use.
*/
ConfigPtr = XSpi_LookupConfig(DeviceId);
if (ConfigPtr == NULL) {
return XST_DEVICE_NOT_FOUND;
}
Status = XSpi_CfgInitialize(&Spi, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Perform a self-test to ensure that the hardware was built correctly
*/
Status = XSpi_SelfTest(&Spi);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
return XST_SUCCESS;
}
/*****
* PmodCtlSys_init() - initialize the PmodCtlsys
*
* This function initializes the PmodCtlSys ADC (an MSP3202). Sine
* the MSP3202 is a SPI device the primary purpose of the function
* is to configure and start the Xilinx SPI peripheral. It checks
* basic functionality of the SPI peripheral by running the self-test.
* It also writes the correct data to the global send buffer PmodCtlSys_SndBuf[]
* because its contents never change. This code is based on the Xilinx SPI
* driver "spi_polled_example.c" example included in the EDK.
*****/
XStatus PmodCtlSys_init(XSpi *SpiInstancePtr, u16 SpiDeviceID)
{
XStatus Status; // return status from SPI driver functions
XSpi_Config *ConfigPtr; // Pointer to Configuration data
// Initialize the SPI driver so that it is ready to use.
ConfigPtr = XSpi_LookupConfig(SpiDeviceID);
if (ConfigPtr == NULL)
{
return XST_DEVICE_NOT_FOUND;
}
Status = XSpi_CfgInitialize(SpiInstancePtr, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS)
{
return XST_FAILURE;
}
// Perform a self-test to ensure that the hardware was built correctly
Status = XSpi_SelfTest(SpiInstancePtr);
if (Status != XST_SUCCESS)
{
return XST_FAILURE;
}
// Set the Spi device as a master,
// SS goes low for entire transaction (does not toggle every 8 bits)
// All other bits are OK as defaults
Status = XSpi_SetOptions(SpiInstancePtr, XSP_MASTER_OPTION | XSP_MANUAL_SSELECT_OPTION);
if (Status != XST_SUCCESS)
{
return XST_FAILURE;
}
// Start the SPI driver so that the device is enabled
// and then disable the Global interrupt because we
// are using the peripheral in polled mode
XSpi_Start(SpiInstancePtr);
XSpi_IntrGlobalDisable(SpiInstancePtr);
// initialize the SPI send buffer. Since the PmodCtlSys only
// uses the channel 0 ADC in the MPS3202 the send buffer
// contents will always be the same.
// Command Byte 1 - Start bit is in the LSB, others are don't care
// Command Byte 2 - single-ended input, Select Channel 0, send data most-significant bit first
// Command Byte 2 - needed to have ADC return all the counts bits. All bits are don't care
PmodCtlSys_SndBuf[0] = MSP3202_START_MSK;
PmodCtlSys_SndBuf[1] = (MSP3202_SGL_MSK << 7) | (MSP3202_SEL_CHNL0_MSK << 6) | (MSP3202_SEL_MSBF_MSK << 5);
PmodCtlSys_SndBuf[2] = 0x55;
return XST_SUCCESS;
}
/**
*
* This function does a minimal test on the Spi device and driver as a
* design example. The purpose of this function is to illustrate how to use
* the XSpi component using the polled mode.
*
* This function sends data and expects to receive the same data.
*
*
* @param SpiInstancePtr is a pointer to the instance of Spi component.
* @param SpiDeviceId is the Device ID of the Spi Device and is the
* XPAR_<SPI_instance>_DEVICE_ID value from xparameters.h.
*
* @return XST_SUCCESS if successful, otherwise XST_FAILURE.
*
* @note
*
* This function contains an infinite loop such that if the Spi device is not
* working it may never return.
*
******************************************************************************/
int SpiPolledExample(XSpi *SpiInstancePtr, u16 SpiDeviceId)
{
int Status;
u32 Count;
XSpi_Config *ConfigPtr; /* Pointer to Configuration data */
/*
* Initialize the SPI driver so that it is ready to use.
*/
ConfigPtr = XSpi_LookupConfig(SpiDeviceId);
if (ConfigPtr == NULL) {
return XST_DEVICE_NOT_FOUND;
}
Status = XSpi_CfgInitialize(SpiInstancePtr, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Perform a self-test to ensure that the hardware was built correctly.
*/
Status = XSpi_SelfTest(SpiInstancePtr);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Run loopback test only in case of standard SPI mode.
*/
if (SpiInstancePtr->SpiMode != XSP_STANDARD_MODE) {
return XST_SUCCESS;
}
/*
* Set the Spi device as a master and in loopback mode.
*/
Status = XSpi_SetOptions(SpiInstancePtr, XSP_MASTER_OPTION | XSP_MANUAL_SSELECT_OPTION);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Start the SPI driver so that the device is enabled.
*/
XSpi_Start(SpiInstancePtr);
/*
* Disable Global interrupt to use polled mode operation
*/
XSpi_IntrGlobalDisable(SpiInstancePtr);
/*
* Initialize the write buffer with pattern to write, initialize the
* read buffer to zero so it can be verified after the read, the
* Test value that is added to the unique value allows the value to be
* changed in a debug environment.
*/
/*
* Transmit the data.
*/
/*Init ADCL*/
SpiInstancePtr->SlaveSelectReg = 0x00000000;
ADXL362_Init(SpiInstancePtr);
DelayMs(1);
while(1)
{
int x = 0, y=0, z=0, temp;
x= ADXL362_ReadX(SpiInstancePtr);
y= ADXL362_ReadY(SpiInstancePtr);
z= ADXL362_ReadZ(SpiInstancePtr);
temp = ADXL362_ReadTemp(SpiInstancePtr);
DelayMs(5);
xil_printf("X: %d\r\n", x);
xil_printf("Y: %d\r\n", y);
xil_printf("Z: %d\r\n", z);
xil_printf("temperature: %d\r\n", temp);
}
SpiInstancePtr->SlaveSelectReg = 0x0000001;
return XST_SUCCESS;
}
/**
*
* This function does a minimal test on the Spi device and driver as a
* design example. The purpose of this function is to illustrate how to use
* the XSpi component using the polled mode.
*
* This function sends data and expects to receive the same data.
*
*
* @param SpiInstancePtr is a pointer to the instance of Spi component.
* @param SpiDeviceId is the Device ID of the Spi Device and is the
* XPAR_<SPI_instance>_DEVICE_ID value from xparameters.h.
*
* @return XST_SUCCESS if successful, otherwise XST_FAILURE.
*
* @note
*
* This function contains an infinite loop such that if the Spi device is not
* working it may never return.
*
******************************************************************************/
int SpiPolledExample(XSpi *SpiInstancePtr, u16 SpiDeviceId)
{
int Status;
u32 Count;
u8 Test;
XSpi_Config *ConfigPtr; /* Pointer to Configuration data */
/*
* Initialize the SPI driver so that it is ready to use.
*/
ConfigPtr = XSpi_LookupConfig(SpiDeviceId);
if (ConfigPtr == NULL) {
return XST_DEVICE_NOT_FOUND;
}
Status = XSpi_CfgInitialize(SpiInstancePtr, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Perform a self-test to ensure that the hardware was built correctly.
*/
Status = XSpi_SelfTest(SpiInstancePtr);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Run loopback test only in case of standard SPI mode.
*/
if (SpiInstancePtr->SpiMode != XSP_STANDARD_MODE) {
return XST_SUCCESS;
}
/*
* Set the Spi device as a master and in loopback mode.
*/
Status = XSpi_SetOptions(SpiInstancePtr, XSP_MASTER_OPTION |
XSP_LOOPBACK_OPTION);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Start the SPI driver so that the device is enabled.
*/
XSpi_Start(SpiInstancePtr);
/*
* Disable Global interrupt to use polled mode operation
*/
XSpi_IntrGlobalDisable(SpiInstancePtr);
/*
* Initialize the write buffer with pattern to write, initialize the
* read buffer to zero so it can be verified after the read, the
* Test value that is added to the unique value allows the value to be
* changed in a debug environment.
*/
Test = 0x10;
for (Count = 0; Count < BUFFER_SIZE; Count++) {
WriteBuffer[Count] = (u8)(Count + Test);
ReadBuffer[Count] = 0;
}
/*
* Transmit the data.
*/
XSpi_Transfer(SpiInstancePtr, WriteBuffer, ReadBuffer, BUFFER_SIZE);
/*
* Compare the data received with the data that was transmitted.
*/
for (Count = 0; Count < BUFFER_SIZE; Count++) {
if (WriteBuffer[Count] != ReadBuffer[Count]) {
return XST_FAILURE;
}
}
return XST_SUCCESS;
}
int main() {
xil_printf("Master SPI oRSC echo test\n");
// initialize stdout.
init_platform();
tx_buffer = cbuffer_new();
rx_buffer = cbuffer_new();
spi_stream = spi_stream_init(
tx_buffer, rx_buffer,
DoSpiTransfer, // callback which triggers a SPI transfer
0);
int Status;
XSpi_Config *ConfigPtr; /* Pointer to Configuration data */
/*
* Initialize the SPI driver so that it is ready to use.
*/
ConfigPtr = XSpi_LookupConfig(SPI_DEVICE_ID);
if (ConfigPtr == NULL) {
xil_printf ("Error: could not lookup SPI configuration\n");
return XST_DEVICE_NOT_FOUND;
}
Status = XSpi_CfgInitialize(&SpiInstance, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
xil_printf("Error: could not initialize the SPI device\n");
return XST_FAILURE;
}
Status = XSpi_SelfTest(&SpiInstance);
if (Status != XST_SUCCESS) {
xil_printf("Error: The SPI self test failed.\n");
return XST_FAILURE;
}
/*
* Connect the Spi device to the interrupt subsystem such that
* interrupts can occur. This function is application specific.
*/
Status = SpiSetupIntrSystem(&IntcInstance, &SpiInstance, SPI_IRPT_INTR);
if (Status != XST_SUCCESS) {
xil_printf("Error: Could not setup interrupt system.\n");
return XST_FAILURE;
}
/*
* Set the Spi device as a master.
*/
Status = XSpi_SetOptions(&SpiInstance, XSP_MASTER_OPTION);
if (Status != XST_SUCCESS) {
xil_printf("Error: Could not set as master\n");
return XST_FAILURE;
}
// Go!
XSpi_Start(&SpiInstance);
// Note: to disable interrupt, do: XIntc_Disconnect(&IntcInstance,
// SPI_IRPT_INTR);
u32 expected_rx = 0;
u32 current_tx = 0;
while (1) {
// fill up the transmit buffer
while (cbuffer_freespace(tx_buffer)) {
cbuffer_push_back(tx_buffer, current_tx++);
}
// check to make sure the received buffer is what we expect
while (cbuffer_size(rx_buffer)) {
u32 front = cbuffer_value_at(rx_buffer, 0);
if (front != expected_rx) {
//xil_printf("Error: expected %lx, got %lx!\n", expected_rx, front);
xil_printf("Error: data value\n");
}
expected_rx++;
cbuffer_deletefront(rx_buffer, 1);
}
}
return 0;
}
void LEDPIN_Init(void)
{
int Status;
Status = XGpio_Initialize(&dc, XPAR_AXI_GPIO_0_DEVICE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
Status = XGpio_Initialize(&reset, XPAR_AXI_GPIO_1_DEVICE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
Status = XGpio_Initialize(&led1, XPAR_AXI_GPIO_2_DEVICE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
Status = XGpio_Initialize(&led2, XPAR_AXI_GPIO_3_DEVICE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
XGpio_SetDataDirection(&dc, DC_CHANNEL, 0x0);
XGpio_DiscreteWrite(&dc, DC_CHANNEL, 0x0);
XGpio_SetDataDirection(&reset, reset_CHANNEL, 0x0);
XGpio_DiscreteWrite(&reset, reset_CHANNEL, 0x0);
XGpio_SetDataDirection(&led1, reset_CHANNEL, 0x0);
XGpio_DiscreteWrite(&led1, reset_CHANNEL, 0x0);
XGpio_SetDataDirection(&led2, reset_CHANNEL, 0x0);
XGpio_DiscreteWrite(&led2, reset_CHANNEL, 0x0);
XGpio_DiscreteWrite(&led2, reset_CHANNEL, 0x1);
XSpi_Config *ConfigPtr; /* Pointer to Configuration data */
/*
* Initialize the SPI driver so that it is ready to use.
*/
ConfigPtr = XSpi_LookupConfig(SPI_DEVICE_ID);
if (ConfigPtr == NULL) {
return XST_DEVICE_NOT_FOUND;
}
Status = XSpi_CfgInitialize(&Spi, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Perform a self-test to ensure that the hardware was built correctly
*/
Status = XSpi_SelfTest(&Spi);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
Status = XSpi_SetOptions(&Spi, XSP_MASTER_OPTION | XSP_CLK_ACTIVE_LOW_OPTION );//| XSP_CR_CLK_POLARITY_MASK | XSP_CR_CLK_PHASE_MASK);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
XGpio_DiscreteWrite(&led2, reset_CHANNEL, 0x0);
}
// | XSP_CR_CPOL_MASK|XSP_CR_CPHA_MASK);
//XSpiPs_SetClkPrescaler(&Spi, XSPIPS_CLK_PRESCALE_256);
XSpi_SetSlaveSelect(&Spi, 0x1);
//XSpi_Start(&Spi);
Status = XSpi_Start(&Spi);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
XSpi_IntrGlobalDisable(&Spi);
/*Status = XSpi_SetSlaveSelect(&Spi, 0x1);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}*/
}
/**
*
* This function does a minimal test on the Spi device and driver as a
* design example. The purpose of this function is to illustrate how to use
* the XSpi component using the interrupt mode.
*
* This function sends data and expects to receive the same data.
*
*
* @param IntcInstancePtr is a pointer to the instance of the INTC
* component.
* @param SpiInstancePtr is a pointer to the instance of Spi component.
* @param SpiDeviceId is the Device ID of the Spi Device and is the
* XPAR_<SPI_instance>_DEVICE_ID value from xparameters.h.
* @param SpiIntrId is the interrupt Id and is typically
* XPAR_<INTC_instance>_<SPI_instance>_VEC_ID value from
* xparameters.h .
*
* @return XST_SUCCESS if successful, otherwise XST_FAILURE.
*
* @note
*
* This function contains an infinite loop such that if interrupts are not
* working it may never return.
*
******************************************************************************/
int SpiIntrExample(XIntc *IntcInstancePtr, XSpi *SpiInstancePtr,
u16 SpiDeviceId, u16 SpiIntrId)
{
int Status;
u32 Count;
u8 Test;
XSpi_Config *ConfigPtr; /* Pointer to Configuration data */
/*
* Initialize the SPI driver so that it is ready to use.
*/
ConfigPtr = XSpi_LookupConfig(SpiDeviceId);
if (ConfigPtr == NULL) {
return XST_DEVICE_NOT_FOUND;
}
Status = XSpi_CfgInitialize(SpiInstancePtr, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Perform a self-test to ensure that the hardware was built correctly.
*/
Status = XSpi_SelfTest(SpiInstancePtr);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Run loopback test only in case of standard SPI mode.
*/
if (SpiInstancePtr->SpiMode != XSP_STANDARD_MODE) {
return XST_SUCCESS;
}
/*
* Connect the Spi device to the interrupt subsystem such that
* interrupts can occur. This function is application specific.
*/
Status = SpiSetupIntrSystem(IntcInstancePtr,
SpiInstancePtr,
SpiIntrId);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Setup the handler for the SPI that will be called from the interrupt
* context when an SPI status occurs, specify a pointer to the SPI
* driver instance as the callback reference so the handler is able to
* access the instance data.
*/
XSpi_SetStatusHandler(SpiInstancePtr, SpiInstancePtr,
(XSpi_StatusHandler) SpiIntrHandler);
/*
* Set the Spi device as a master and in loopback mode.
*/
Status = XSpi_SetOptions(SpiInstancePtr, XSP_MASTER_OPTION |
XSP_LOOPBACK_OPTION);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Start the SPI driver so that interrupts and the device are enabled.
*/
XSpi_Start(SpiInstancePtr);
/*
* Initialize the write buffer with pattern to write, initialize the
* read buffer to zero so it can be verified after the read, the
* Test value that is added to the unique value allows the value to be
* changed in a debug environment.
*/
Test = 0x10;
for (Count = 0; Count < BUFFER_SIZE; Count++) {
WriteBuffer[Count] = (u8)(Count + Test);
ReadBuffer[Count] = 0;
}
/*
* Transmit the data.
*/
TransferInProgress = TRUE;
XSpi_Transfer(SpiInstancePtr, WriteBuffer, ReadBuffer, BUFFER_SIZE);
/*
* Wait for the transmission to be complete.
*/
while (TransferInProgress);
/*
* Disable the Spi interrupt.
*/
SpiDisableIntrSystem(IntcInstancePtr, SpiIntrId);
/*
* Compare the data received with the data that was transmitted.
*/
for (Count = 0; Count < BUFFER_SIZE; Count++) {
if (WriteBuffer[Count] != ReadBuffer[Count]) {
return XST_FAILURE;
}
}
return XST_SUCCESS;
}
