/* init the AXI streaming FIFO */
void adau1761_FIFO_init(tAdau1761 *pThis)
{
//initialize Streaming FIFO
XLlFifo_Config * cfg;
/* use the driver for initial setup */
cfg = XLlFfio_LookupConfig(XPAR_AXI_FIFO_0_DEVICE_ID);
XLlFifo_CfgInitialize(&(pThis->ToI2S), cfg, cfg->BaseAddress);
//Reset AXI-Streaming FIFO Transmit side
*(volatile u32 *) (FIFO_BASE_ADDR + FIFO_TX_RESET) = FIFO_TX_RESET_VALUE;
//Initialize the TX FIFO buffer with 0
*(volatile u32 *) (FIFO_BASE_ADDR + FIFO_TX_DES) = 0x00;
//Reset AXI-Streaming FIFO Transmit side
*(volatile u32 *) (FIFO_BASE_ADDR + FIFO_RX_RESET) = FIFO_RX_RESET_VALUE;
//Initialize the TX FIFO buffer with 0
*(volatile u32 *) (FIFO_BASE_ADDR + FIFO_RX_DES) = 0x00;
}
/**
*
* This function demonstrates the usage AXI FIFO
* It does the following:
* - Set up the output terminal if UART16550 is in the hardware build
* - Initialize the Axi FIFO Device.
* - Transmit the data
* - Receive the data from fifo
* - Compare the data
* - Return the result
*
* @param InstancePtr is a pointer to the instance of the
* XLlFifo component.
* @param DeviceId is Device ID of the Axi Fifo Deive instance,
* typically XPAR_<AXI_FIFO_instance>_DEVICE_ID value from
* xparameters.h.
*
* @return -XST_SUCCESS to indicate success
* -XST_FAILURE to indicate failure
*
******************************************************************************/
int XLlFifoPollingExample(XLlFifo *InstancePtr, u16 DeviceId)
{
XLlFifo_Config *Config;
int Status;
int i;
int Error;
Status = XST_SUCCESS;
/* Initial setup for Uart16550 */
#ifdef XPAR_UARTNS550_0_BASEADDR
Uart550_Setup();
#endif
/* Initialize the Device Configuration Interface driver */
Config = XLlFfio_LookupConfig(DeviceId);
if (!Config) {
xil_printf("No config found for %d\r\n", DeviceId);
return XST_FAILURE;
}
/*
* This is where the virtual address would be used, this example
* uses physical address.
*/
Status = XLlFifo_CfgInitialize(InstancePtr, Config, Config->BaseAddress);
if (Status != XST_SUCCESS) {
xil_printf("Initialization failed\n\r");
return Status;
}
/* Check for the Reset value */
Status = XLlFifo_Status(InstancePtr);
XLlFifo_IntClear(InstancePtr,0xffffffff);
Status = XLlFifo_Status(InstancePtr);
if(Status != 0x0) {
xil_printf("\n ERROR : Reset value of ISR0 : 0x%x\t"
"Expected : 0x0\n\r",
XLlFifo_Status(InstancePtr));
return XST_FAILURE;
}
/* Transmit the Data Stream */
Status = TxSend(InstancePtr, SourceBuffer);
if (Status != XST_SUCCESS){
xil_printf("Transmisson of Data failed\n\r");
return XST_FAILURE;
}
/* Revceive the Data Stream */
Status = RxReceive(InstancePtr, DestinationBuffer);
if (Status != XST_SUCCESS){
xil_printf("Receiving data failed");
return XST_FAILURE;
}
Error = 0;
/* Compare the data send with the data received */
xil_printf(" Comparing data ...\n\r");
for( i=0 ; i<MAX_DATA_BUFFER_SIZE ; i++ ){
if ( *(SourceBuffer + i) != *(DestinationBuffer + i) ){
Error = 1;
break;
}
}
if (Error != 0){
return XST_FAILURE;
}
return Status;
}
/**
*
* This function demonstrates the usage of AXI FIFO
* It does the following:
* - Set up the output terminal if UART16550 is in the hardware build
* - Initialize the Axi FIFO Device.
* - Set up the interrupt handler for fifo
* - Transmit the data
* - Compare the data
* - Return the result
*
* @param InstancePtr is a pointer to the instance of the
* XLlFifo instance.
* @param DeviceId is Device ID of the Axi Fifo Deive instance,
* typically XPAR_<AXI_FIFO_instance>_DEVICE_ID value from
* xparameters.h.
*
* @return -XST_SUCCESS to indicate success
* -XST_FAILURE to indicate failure
*
******************************************************************************/
int XLlFifoInterruptExample(XLlFifo *InstancePtr, u16 DeviceId)
{
XLlFifo_Config *Config;
int Status;
int i;
int err;
Status = XST_SUCCESS;
/* Initial setup for Uart16550 */
#ifdef XPAR_UARTNS550_0_BASEADDR
Uart550_Setup();
#endif
/* Initialize the Device Configuration Interface driver */
Config = XLlFfio_LookupConfig(DeviceId);
if (!Config) {
xil_printf("No config found for %d\r\n", DeviceId);
return XST_FAILURE;
}
/*
* This is where the virtual address would be used, this example
* uses physical address.
*/
Status = XLlFifo_CfgInitialize(InstancePtr, Config, Config->BaseAddress);
if (Status != XST_SUCCESS) {
xil_printf("Initialization failed\n\r");
return Status;
}
/* Check for the Reset value */
Status = XLlFifo_Status(InstancePtr);
XLlFifo_IntClear(InstancePtr,0xffffffff);
Status = XLlFifo_Status(InstancePtr);
if(Status != 0x0) {
xil_printf("\n ERROR : Reset value of ISR0 : 0x%x\t"
"Expected : 0x0\n\r",
XLlFifo_Status(InstancePtr));
return XST_FAILURE;
}
/*
* Connect the Axi Streaming FIFO to the interrupt subsystem such
* that interrupts can occur. This function is application specific.
*/
Status = SetupInterruptSystem(&Intc, InstancePtr, FIFO_INTR_ID);
if (Status != XST_SUCCESS) {
xil_printf("Failed intr setup\r\n");
return XST_FAILURE;
}
XLlFifo_IntEnable(InstancePtr, XLLF_INT_ALL_MASK);
Done = 0;
/* Transmit the Data Stream */
Status = TxSend(InstancePtr, SourceBuffer);
if (Status != XST_SUCCESS){
xil_printf("Transmission of Data failed\n\r");
return XST_FAILURE;
}
while(!Done);
/* Check for errors */
if(Error) {
xil_printf("Errors in the FIFO\n\r");
return XST_FAILURE;
}
err = 0;
/* Compare the data sent with the data received */
xil_printf("Comparing data...\n\r");
for( i=0 ; i<MAX_DATA_BUFFER_SIZE ; i++ ){
if ( *(SourceBuffer + i) != *(DestinationBuffer + i) ){
err = 1;
break;
}
}
if (err != 0){
return XST_FAILURE;
}
DisableIntrSystem(&Intc, FIFO_INTR_ID);
return Status;
}
