/**
*
* The main entry point for the EmacLite driver in interrupt mode example.
* This function will transmit/receive the frame using internal loop back and
* verify the data in the received frame.
*
* @param DeviceId is device ID of the XEmacLite Device , typically
* XPAR_<EMAC_instance>_DEVICE_ID value from xparameters.h.
*
* @return XST_SUCCESS to indicate success, otherwise XST_FAILURE.
*
* @note None.
*
******************************************************************************/
int EmacLiteIntrLoopbackExample(u16 DeviceId)
{
int Status;
XIntc *IntcInstancePtr;
XEmacLite *EmacLiteInstPtr;
u32 TxLength;
XEmacLite_Config *ConfigPtr;
RecvFrameLength = 0;
IntcInstancePtr = &IntcInstance;
EmacLiteInstPtr =&EmacLiteInstance;
/*
* Initialize the EmacLite device.
*/
ConfigPtr = XEmacLite_LookupConfig(DeviceId);
if (ConfigPtr == NULL) {
return XST_FAILURE;
}
Status = XEmacLite_CfgInitialize(EmacLiteInstPtr, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Set the MAC address.
*/
XEmacLite_SetMacAddress(EmacLiteInstPtr, LocalAddress);
/*
* Set up the interrupt infrastructure.
*/
Status = EmacLiteSetupIntrSystem(IntcInstancePtr, EmacLiteInstPtr,
INTC_EMACLITE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/*
* Setup the EmacLite handlers.
*/
XEmacLite_SetRecvHandler((EmacLiteInstPtr), (void *)(EmacLiteInstPtr),
(XEmacLite_Handler)EmacLiteRecvHandler);
XEmacLite_SetSendHandler((EmacLiteInstPtr), (void *)(EmacLiteInstPtr),
(XEmacLite_Handler)EmacLiteSendHandler);
/*
* Empty any existing receive frames.
*/
XEmacLite_FlushReceive(EmacLiteInstPtr);
/*
* Enable the EmacLite interrupts.
*/
XEmacLite_EnableInterrupts(EmacLiteInstPtr);
/*
* Check if there is a Tx buffer available.
*/
if (XEmacLite_TxBufferAvailable(EmacLiteInstPtr) != TRUE) {
return XST_FAILURE;
}
/*
* Enable internal loop back.
*/
XEmacLite_EnableLoopBack(EmacLiteInstPtr);
/*
* Send/Receive frames of varying sizes and verify the data in the
* received frames.
*/
for (TxLength = 1; TxLength <= XEL_MTU_SIZE; ) {
RecvFrameLength = 0;
/*
* Send a frame.
*/
Status = EmacLiteSendFrame(EmacLiteInstPtr, TxLength);
if (Status != XST_SUCCESS) {
/*
* Disable internal loop back.
*/
XEmacLite_DisableLoopBack(EmacLiteInstPtr);
return XST_FAILURE;
}
/*
* Wait for the frame to be transmitted and received back.
* As the core is in loopback the transmit interrupt and the
* receive interrupt occur simulataneously.
*/
while ((RecvFrameLength == 0) && (TransmitComplete == FALSE));
/*
* Check the receive frame.
*/
Status = EmacLiteRecvFrame(TxLength++);
if ((Status != XST_SUCCESS) && (Status != XST_NO_DATA)) {
/*
* Disable internal loop back.
*/
XEmacLite_DisableLoopBack(EmacLiteInstPtr);
/*
* Disable and disconnect the EmacLite Interrupts.
*/
XEmacLite_DisableInterrupts(EmacLiteInstPtr);
EmacLiteDisableIntrSystem(IntcInstancePtr,
INTC_EMACLITE_ID);
return XST_FAILURE;
}
}
/*
* Disable internal loop back.
*/
XEmacLite_DisableLoopBack(EmacLiteInstPtr);
/*
* Disable and disconnect the EmacLite Interrupts.
*/
XEmacLite_DisableInterrupts(EmacLiteInstPtr);
EmacLiteDisableIntrSystem(IntcInstancePtr, INTC_EMACLITE_ID);
return XST_SUCCESS;
}
int main( void )
{
xil_printf( "Hello from Freertos\r\n" );
if (XGpio_Initialize(&gpio_leds, XPAR_GPIO_LEDS_DEVICE_ID) != XST_SUCCESS) {
xil_printf( "ERR: Xgpio Leds init failed\r\n" );
} else {
XGpio_SetDataDirection(&gpio_leds, 1, 0xFFFFFF00);
}
if (XGpio_Initialize(&gpio_btns, XPAR_GPIO_BTNS_DEVICE_ID) != XST_SUCCESS) {
xil_printf( "ERR: Xgpio Btns init failed\r\n" );
} else {
XGpio_SetDataDirection(&gpio_btns, 1, 0xFFFFFFFF);
}
if (XEmacLite_Initialize(&emac, XPAR_EMACLITE_0_DEVICE_ID) != XST_SUCCESS) {
xil_printf( "ERR: emacline init failed\r\n" );
}
XEmacLite_SetMacAddress(&emac, LocalAddress);
XEmacLite_FlushReceive(&emac);
RecvFrameLength = 0;
if (XEmacLite_TxBufferAvailable(&emac) != TRUE) {
xil_printf( "ERR: Xemac TxBuffer not available\r\n" );
}
// XEmacLite_EnableLoopBack(&emac);
XEmacLite_DisableLoopBack(&emac);
/* Create the two tasks. The Tx task is given a lower priority than the
Rx task, so the Rx task will leave the Blocked state and pre-empt the Tx
task as soon as the Tx task places an item in the queue. */
xTaskCreate( prvTxTask, /* The function that implements the task. */
( const char * ) "Tx", /* Text name for the task, provided to assist debugging only. */
configMINIMAL_STACK_SIZE, /* The stack allocated to the task. */
NULL, /* The task parameter is not used, so set to NULL. */
tskIDLE_PRIORITY, /* The task runs at the idle priority. */
NULL );
xTaskCreate( prvRxTask, ( const char * ) "GB", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY + 1, NULL );
/* Create the queue used by the tasks. The Rx task has a higher priority
than the Tx task, so will preempt the Tx task and remove values from the
queue as soon as the Tx task writes to the queue - therefore the queue can
never have more than one item in it. */
xQueue = xQueueCreate( 1, /* There is only one space in the queue. */
sizeof( HWstring ) ); /* Each space in the queue is large enough to hold a uint32_t. */
/* Check the queue was created. */
configASSERT( xQueue );
/* Start the tasks and timer running. */
vTaskStartScheduler();
/* If all is well, the scheduler will now be running, and the following line
will never be reached. If the following line does execute, then there was
insufficient FreeRTOS heap memory available for the idle and/or timer tasks
to be created. See the memory management section on the FreeRTOS web site
for more details. */
for( ;; );
}