/**
*
* This function does a minimal test on the UartLite device and driver as a
* design example. The purpose of this function is to illustrate
* how to use the XUartLite component.
*
* This function sends data and expects to receive the same data through the
* UartLite. The user must provide a physical loopback such that data which is
* transmitted will be received.
*
* This function uses interrupt driver mode of the UartLite device. The calls
* to the UartLite driver in the handlers should only use the non-blocking
* calls.
*
* @param DeviceId is the Device ID of the UartLite Device and is the
* XPAR_<uartlite_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 interrupts are not
* working it may never return.
*
****************************************************************************/
int UartLiteIntrExample(u16 DeviceId)
{
int Status;
int Index;
/*
* Initialize the UartLite driver so that it's ready to use.
*/
Status = XUartLite_Initialize(&UartLite, DeviceId);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Perform a self-test to ensure that the hardware was built correctly.
*/
Status = XUartLite_SelfTest(&UartLite);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Connect the UartLite to the interrupt subsystem such that interrupts can
* occur. This function is application specific.
*/
Status = SetupInterruptSystem(&UartLite);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Setup the handlers for the UartLite that will be called from the
* interrupt context when data has been sent and received, specify a
* pointer to the UartLite driver instance as the callback reference so
* that the handlers are able to access the instance data.
*/
XUartLite_SetSendHandler(&UartLite, SendHandler, &UartLite);
XUartLite_SetRecvHandler(&UartLite, RecvHandler, &UartLite);
/*
* Enable the interrupt of the UartLite so that interrupts will occur.
*/
XUartLite_EnableInterrupt(&UartLite);
/*
* Initialize the send buffer bytes with a pattern to send and the
* the receive buffer bytes to zero to allow the receive data to be
* verified.
*/
for (Index = 0; Index < TEST_BUFFER_SIZE; Index++) {
SendBuffer[Index] = Index;
ReceiveBuffer[Index] = 0;
}
/*
* Start receiving data before sending it since there is a loopback.
*/
XUartLite_Recv(&UartLite, ReceiveBuffer, TEST_BUFFER_SIZE);
/*
* Send the buffer using the UartLite.
*/
XUartLite_Send(&UartLite, SendBuffer, TEST_BUFFER_SIZE);
/*
* Wait for the entire buffer to be received, letting the interrupt
* processing work in the background, this function may get locked
* up in this loop if the interrupts are not working correctly.
*/
while ((TotalReceivedCount != TEST_BUFFER_SIZE) ||
(TotalSentCount != TEST_BUFFER_SIZE)) {
}
/*
* Verify the entire receive buffer was successfully received.
*/
for (Index = 0; Index < TEST_BUFFER_SIZE; Index++) {
if (ReceiveBuffer[Index] != SendBuffer[Index]) {
return XST_FAILURE;
}
}
return XST_SUCCESS;
}
int interrupt_init(){
int Result;
Result = XIntc_Initialize(&InterruptController, INTC_DEVICE_ID);
if (Result != XST_SUCCESS) {
return Result;
}
Result = XIntc_Connect(&InterruptController, INTC_GPIO_INTERRUPT_ID, (XInterruptHandler)GpioIsr, &Gpio);
if (Result != XST_SUCCESS) {
warp_printf(PL_ERROR,"Failed to connect GPIO to XIntc\n");
return Result;
}
Result = XIntc_Connect(&InterruptController, UARTLITE_INT_IRQ_ID, (XInterruptHandler)XUartLite_InterruptHandler, &UartLite);
if (Result != XST_SUCCESS) {
warp_printf(PL_ERROR,"Failed to connect XUartLite to XIntc\n");
return Result;
}
//Connect Timer to Interrupt Controller
Result = XIntc_Connect(&InterruptController, TMRCTR_INTERRUPT_ID, (XInterruptHandler)XTmrCtr_CustomInterruptHandler, &TimerCounterInst);
//Result = XIntc_Connect(&InterruptController, TMRCTR_DEVICE_ID, (XInterruptHandler)timer_handler, &TimerCounterInst);
if (Result != XST_SUCCESS) {
xil_printf("Failed to connect XTmrCtr to XIntC\n");
return -1;
}
wlan_lib_setup_mailbox_interrupt(&InterruptController);
wlan_eth_setup_interrupt(&InterruptController);
Result = XIntc_Start(&InterruptController, XIN_REAL_MODE);
if (Result != XST_SUCCESS) {
warp_printf(PL_ERROR,"Failed to start XIntc\n");
return Result;
}
XIntc_Enable(&InterruptController, INTC_GPIO_INTERRUPT_ID);
XIntc_Enable(&InterruptController, UARTLITE_INT_IRQ_ID);
XIntc_Enable(&InterruptController, TMRCTR_INTERRUPT_ID);
Xil_ExceptionInit();
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,(Xil_ExceptionHandler)XIntc_InterruptHandler, &InterruptController);
/* Enable non-critical exceptions */
Xil_ExceptionEnable();
XGpio_InterruptEnable(&Gpio, GPIO_INPUT_INTERRUPT);
XGpio_InterruptGlobalEnable(&Gpio);
XUartLite_SetSendHandler(&UartLite, SendHandler, &UartLite);
XUartLite_SetRecvHandler(&UartLite, RecvHandler, &UartLite);
XUartLite_EnableInterrupt(&UartLite);
XUartLite_Recv(&UartLite, ReceiveBuffer, UART_BUFFER_SIZE);
return 0;
}
int main(void) {
LOG_INFO("UART CTP FE echo test\n");
init_platform();
tx_buffer = cbuffer_new();
rx_buffer = cbuffer_new();
int Status;
u16 DeviceId = UARTLITE_DEVICE_ID;
/*
* Initialize the UartLite driver so that it's ready to use.
*/
Status = XUartLite_Initialize(&UartLite, DeviceId);
if (Status != XST_SUCCESS) {
LOG_ERROR ("Error: could not initialize UART\n");
return XST_FAILURE;
}
XUartLite_ResetFifos(&UartLite);
/*
* Perform a self-test to ensure that the hardware was built correctly.
*/
Status = XUartLite_SelfTest(&UartLite);
if (Status != XST_SUCCESS) {
LOG_ERROR ("Error: self test failed\n");
return XST_FAILURE;
}
/*
* Connect the UartLite to the interrupt subsystem such that interrupts can
* occur. This function is application specific.
*/
Status = SetupInterruptSystem(&UartLite);
if (Status != XST_SUCCESS) {
LOG_ERROR ("Error: could not setup interrupts\n");
return XST_FAILURE;
}
/*
* Setup the handlers for the UartLite that will be called from the
* interrupt context when data has been sent and received, specify a
* pointer to the UartLite driver instance as the callback reference so
* that the handlers are able to access the instance data.
*/
XUartLite_SetSendHandler(&UartLite, SendHandler, &UartLite);
XUartLite_SetRecvHandler(&UartLite, RecvHandler, &UartLite);
/*
* Enable the interrupt of the UartLite so that interrupts will occur.
*/
XUartLite_EnableInterrupt(&UartLite);
// bootstrap the READ
LOG_DEBUG("Bootstrapping READ\n");
XUartLite_Recv(&UartLite, (u8*)&rx_tmp_buffer, sizeof(uint32_t));
LOG_INFO("Starting loop\n");
/*
LOG_DEBUG("Sending 'wtf!'\n");
currently_sending = 1;
char help[4] = "wtf!";
unsigned int ret = XUartLite_Send(&UartLite, (u8*)help, 4);
LOG_DEBUG("WTF send complete return: %x\n", ret);
*/
/* echo received data forever */
unsigned int heartbeat = 0;
while (1) {
if (heartbeat++ % (1 << 8)) {
//LOG_DEBUG("bump %x\n", heartbeat);
}
while (cbuffer_size(rx_buffer) && cbuffer_freespace(tx_buffer)) {
uint32_t data = cbuffer_pop_front(rx_buffer);
//LOG_DEBUG("Echoing data word %x\n", data);
cbuffer_push_back(tx_buffer, data);
}
if (!currently_sending && cbuffer_size(tx_buffer)) {
LOG_DEBUG("\nREINT SEND\n");
currently_sending = 1;
/*
if (XUartLite_IsSending(&UartLite)) {
LOG_DEBUG("UART STAT: sending\n");
} else {
LOG_DEBUG("UART STAT: idle\n");
}
*/
unsigned int to_send = cbuffer_contiguous_data_size(tx_buffer) * sizeof(uint32_t);
u8* output_ptr = (u8*)&(tx_buffer->data[tx_buffer->pos]);
//LOG_DEBUG("REINIT %x\n", to_send);
//LOG_DEBUG("SENDADDR %x\n", output_ptr);
XUartLite_Send(&UartLite, output_ptr, to_send);
}
}
}
/**
* This function sets up the interrupt system for the example. The processing
* contained in this funtion assumes the hardware system was built with
* and interrupt controller.
*
* @param None.
*
* @return A status indicating XST_SUCCESS or a value that is contained in
* xstatus.h.
*
* @note None.
*
*****************************************************************************/
int BT2_SetupInterruptSystem(PmodBT2* InstancePtr, u32 interruptID, void* receiveHandlerFunction, void* sendHandlerFunction)
{
int Result;
#ifdef XPAR_XINTC_NUM_INSTANCES
INTC *IntcInstancePtr = &InstancePtr->intc;
/*
* Initialize the interrupt controller driver so that it's ready to use.
* specify the device ID that was generated in xparameters.h
*/
Result = XIntc_Initialize(IntcInstancePtr, interruptID);
if (Result != XST_SUCCESS) {
return Result;
}
/* Hook up interrupt service routine */
XIntc_Connect(IntcInstancePtr, interruptID,
(Xil_ExceptionHandler)XUartLite_InterruptHandler, &InstancePtr->BT2Uart);
/* Enable the interrupt vector at the interrupt controller */
XIntc_Enable(IntcInstancePtr, interruptID);
/*
* Start the interrupt controller such that interrupts are recognized
* and handled by the processor
*/
Result = XIntc_Start(IntcInstancePtr, XIN_REAL_MODE);
if (Result != XST_SUCCESS) {
return Result;
}
XUartLite_SetRecvHandler(&InstancePtr->BT2Uart, (XUartLite_Handler)receiveHandlerFunction, InstancePtr);
XUartLite_SetSendHandler(&InstancePtr->BT2Uart, (XUartLite_Handler)sendHandlerFunction, InstancePtr);
/*
* Initialize the exception table and register the interrupt
* controller handler with the exception table
*/
Xil_ExceptionInit();
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
(Xil_ExceptionHandler)INTC_HANDLER, IntcInstancePtr);
/* Enable non-critical exceptions */
Xil_ExceptionEnable();
XUartLite_EnableInterrupt(&InstancePtr->BT2Uart);
#endif
#ifdef XPAR_SCUGIC_0_DEVICE_ID
INTC *IntcInstancePtr = &InstancePtr->intc;
XScuGic_Config *IntcConfig;
/*
* Initialize the interrupt controller driver so that it is ready to
* use.
*/
IntcConfig = XScuGic_LookupConfig(INTC_DEVICE_ID);
if (NULL == IntcConfig) {
return XST_FAILURE;
}
Result = XScuGic_CfgInitialize(IntcInstancePtr, IntcConfig,
IntcConfig->CpuBaseAddress);
if (Result != XST_SUCCESS) {
return XST_FAILURE;
}
XScuGic_SetPriorityTriggerType(IntcInstancePtr, interruptID,
0xA0, 0x3);
/*
* Connect the interrupt handler that will be called when an
* interrupt occurs for the device.
*/
Result = XScuGic_Connect(IntcInstancePtr, interruptID,
(Xil_ExceptionHandler)XUartLite_InterruptHandler, &InstancePtr->BT2Uart);
if (Result != XST_SUCCESS) {
return Result;
}
/*
* Enable the interrupt for the GPIO device.
*/
XScuGic_Enable(IntcInstancePtr, interruptID);
XUartLite_SetRecvHandler(&InstancePtr->BT2Uart, (XUartLite_Handler)receiveHandlerFunction, InstancePtr);
XUartLite_SetSendHandler(&InstancePtr->BT2Uart, (XUartLite_Handler)sendHandlerFunction, InstancePtr);
/*
* Initialize the exception table and register the interrupt
* controller handler with the exception table
*/
Xil_ExceptionInit();
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
(Xil_ExceptionHandler)INTC_HANDLER, IntcInstancePtr);
/* Enable non-critical exceptions */
Xil_ExceptionEnable();
XUartLite_EnableInterrupt(&InstancePtr->GPSUart);
#endif
return XST_SUCCESS;
}
