diff options
Diffstat (limited to 'FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/NetworkInterface/RX/NetworkInterface.c')
| -rw-r--r-- | FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/NetworkInterface/RX/NetworkInterface.c | 1244 |
1 files changed, 622 insertions, 622 deletions
diff --git a/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/NetworkInterface/RX/NetworkInterface.c b/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/NetworkInterface/RX/NetworkInterface.c index 139979cce..ebcbfbec9 100644 --- a/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/NetworkInterface/RX/NetworkInterface.c +++ b/FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/NetworkInterface/RX/NetworkInterface.c @@ -1,622 +1,622 @@ -/*********************************************************************************************************************** -* DISCLAIMER -* This software is supplied by Renesas Electronics Corporation and is only intended for use with Renesas products. No -* other uses are authorized. This software is owned by Renesas Electronics Corporation and is protected under all -* applicable laws, including copyright laws. -* THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING -* THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, -* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED. TO THE MAXIMUM -* EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES -* SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR ANY REASON RELATED TO THIS -* SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. -* Renesas reserves the right, without notice, to make changes to this software and to discontinue the availability of -* this software. By using this software, you agree to the additional terms and conditions found by accessing the -* following link: -* http://www.renesas.com/disclaimer -* -* Copyright (C) 2018 Renesas Electronics Corporation. All rights reserved. -***********************************************************************************************************************/ - -/*********************************************************************************************************************** -* File Name : NetworkInterface.c -* Device(s) : RX -* Description : Interfaces FreeRTOS TCP/IP stack to RX Ethernet driver. -***********************************************************************************************************************/ - -/*********************************************************************************************************************** -* History : DD.MM.YYYY Version Description -* : 07.03.2018 0.1 Development -***********************************************************************************************************************/ - -/*********************************************************************************************************************** -* Includes <System Includes> , "Project Includes" -***********************************************************************************************************************/ -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -/* FreeRTOS includes. */ -#include "FreeRTOS.h" -#include "task.h" -#include "FreeRTOS_IP.h" -#include "FreeRTOS_IP_Private.h" -/*#include "FreeRTOS_DNS.h" */ -#include "NetworkBufferManagement.h" -#include "NetworkInterface.h" - -#include "r_ether_rx_if.h" -#include "r_pinset.h" - -/*********************************************************************************************************************** - * Macro definitions - **********************************************************************************************************************/ -#define ETHER_BUFSIZE_MIN 60 - -#if defined( BSP_MCU_RX65N ) || defined( BSP_MCU_RX64M ) || defined( BSP_MCU_RX71M ) - #if ETHER_CFG_MODE_SEL == 0 - #define R_ETHER_PinSet_CHANNEL_0() R_ETHER_PinSet_ETHERC0_MII() - #elif ETHER_CFG_MODE_SEL == 1 - #define R_ETHER_PinSet_CHANNEL_0() R_ETHER_PinSet_ETHERC0_RMII() - #endif -#elif defined( BSP_MCU_RX63N ) - #if ETHER_CFG_MODE_SEL == 0 - #define R_ETHER_PinSet_CHANNEL_0() R_ETHER_PinSet_ETHERC_MII() - #elif ETHER_CFG_MODE_SEL == 1 - #define R_ETHER_PinSet_CHANNEL_0() R_ETHER_PinSet_ETHERC_RMII() - #endif -#endif /* if defined( BSP_MCU_RX65N ) || defined( BSP_MCU_RX64M ) || defined( BSP_MCU_RX71M ) */ - -#ifndef PHY_LS_HIGH_CHECK_TIME_MS - -/* Check if the LinkSStatus in the PHY is still high after 2 seconds of not - * receiving packets. */ - #define PHY_LS_HIGH_CHECK_TIME_MS 2000 -#endif - -#ifndef PHY_LS_LOW_CHECK_TIME_MS - /* Check if the LinkSStatus in the PHY is still low every second. */ - #define PHY_LS_LOW_CHECK_TIME_MS 1000 -#endif - -/*********************************************************************************************************************** - * Private global variables and functions - **********************************************************************************************************************/ -typedef enum -{ - eMACInit, /* Must initialise MAC. */ - eMACPass, /* Initialisation was successful. */ - eMACFailed, /* Initialisation failed. */ -} eMAC_INIT_STATUS_TYPE; - -static TaskHandle_t ether_receive_check_task_handle = 0; -static TaskHandle_t ether_link_check_task_handle = 0; -static TaskHandle_t xTaskToNotify = NULL; -static BaseType_t xPHYLinkStatus; -static BaseType_t xReportedStatus; -static eMAC_INIT_STATUS_TYPE xMacInitStatus = eMACInit; - -static int16_t SendData( uint8_t * pucBuffer, - size_t length ); -static int InitializeNetwork( void ); -static void prvEMACDeferredInterruptHandlerTask( void * pvParameters ); -static void clear_all_ether_rx_discriptors( uint32_t event ); - -int32_t callback_ether_regist( void ); -void EINT_Trig_isr( void * ); -void get_random_number( uint8_t * data, - uint32_t len ); - -void prvLinkStatusChange( BaseType_t xStatus ); -#if ( ipconfigHAS_PRINTF != 0 ) - static void prvMonitorResources( void ); -#endif - -/*********************************************************************************************************************** - * Function Name: xNetworkInterfaceInitialise () - * Description : Initialization of Ethernet driver. - * Arguments : none - * Return Value : pdPASS, pdFAIL - **********************************************************************************************************************/ -BaseType_t xNetworkInterfaceInitialise( void ) -{ - BaseType_t xReturn; - - if( xMacInitStatus == eMACInit ) - { - /* - * Perform the hardware specific network initialization here using the Ethernet driver library to initialize the - * Ethernet hardware, initialize DMA descriptors, and perform a PHY auto-negotiation to obtain a network link. - * - * InitialiseNetwork() uses Ethernet peripheral driver library function, and returns 0 if the initialization fails. - */ - if( InitializeNetwork() == pdFALSE ) - { - xMacInitStatus = eMACFailed; - } - else - { - /* Indicate that the MAC initialisation succeeded. */ - xMacInitStatus = eMACPass; - } - - FreeRTOS_printf( ( "InitializeNetwork returns %s\n", ( xMacInitStatus == eMACPass ) ? "OK" : " Fail" ) ); - } - - if( xMacInitStatus == eMACPass ) - { - xReturn = xPHYLinkStatus; - } - else - { - xReturn = pdFAIL; - } - - FreeRTOS_printf( ( "xNetworkInterfaceInitialise returns %d\n", xReturn ) ); - - return xReturn; -} /* End of function xNetworkInterfaceInitialise() */ - - -/*********************************************************************************************************************** - * Function Name: xNetworkInterfaceOutput () - * Description : Simple network output interface. - * Arguments : pxDescriptor, xReleaseAfterSend - * Return Value : pdTRUE, pdFALSE - **********************************************************************************************************************/ -BaseType_t xNetworkInterfaceOutput( NetworkBufferDescriptor_t * const pxDescriptor, - BaseType_t xReleaseAfterSend ) -{ - BaseType_t xReturn = pdFALSE; - - /* Simple network interfaces (as opposed to more efficient zero copy network - * interfaces) just use Ethernet peripheral driver library functions to copy - * data from the FreeRTOS+TCP buffer into the peripheral driver's own buffer. - * This example assumes SendData() is a peripheral driver library function that - * takes a pointer to the start of the data to be sent and the length of the - * data to be sent as two separate parameters. The start of the data is located - * by pxDescriptor->pucEthernetBuffer. The length of the data is located - * by pxDescriptor->xDataLength. */ - if( xPHYLinkStatus != 0 ) - { - if( SendData( pxDescriptor->pucEthernetBuffer, pxDescriptor->xDataLength ) >= 0 ) - { - xReturn = pdTRUE; - /* Call the standard trace macro to log the send event. */ - iptraceNETWORK_INTERFACE_TRANSMIT(); - } - } - else - { - /* As the PHY Link Status is low, it makes no sense trying to deliver a packet. */ - } - - if( xReleaseAfterSend != pdFALSE ) - { - /* It is assumed SendData() copies the data out of the FreeRTOS+TCP Ethernet - * buffer. The Ethernet buffer is therefore no longer needed, and must be - * freed for re-use. */ - vReleaseNetworkBufferAndDescriptor( pxDescriptor ); - } - - return xReturn; -} /* End of function xNetworkInterfaceOutput() */ - - -#if ( ipconfigHAS_PRINTF != 0 ) - static void prvMonitorResources() - { - static UBaseType_t uxLastMinBufferCount = 0u; - static UBaseType_t uxCurrentBufferCount = 0u; - static size_t uxMinLastSize = 0uL; - static size_t uxCurLastSize = 0uL; - size_t uxMinSize; - size_t uxCurSize; - - uxCurrentBufferCount = uxGetMinimumFreeNetworkBuffers(); - - if( uxLastMinBufferCount != uxCurrentBufferCount ) - { - /* The logging produced below may be helpful - * while tuning +TCP: see how many buffers are in use. */ - uxLastMinBufferCount = uxCurrentBufferCount; - FreeRTOS_printf( ( "Network buffers: %lu lowest %lu\n", - uxGetNumberOfFreeNetworkBuffers(), uxCurrentBufferCount ) ); - } - - uxMinSize = xPortGetMinimumEverFreeHeapSize(); - uxCurSize = xPortGetFreeHeapSize(); - - if( uxMinLastSize != uxMinSize ) - { - uxCurLastSize = uxCurSize; - uxMinLastSize = uxMinSize; - FreeRTOS_printf( ( "Heap: current %lu lowest %lu\n", uxCurSize, uxMinSize ) ); - } - - #if ( ipconfigCHECK_IP_QUEUE_SPACE != 0 ) - { - static UBaseType_t uxLastMinQueueSpace = 0; - UBaseType_t uxCurrentCount = 0u; - - uxCurrentCount = uxGetMinimumIPQueueSpace(); - - if( uxLastMinQueueSpace != uxCurrentCount ) - { - /* The logging produced below may be helpful - * while tuning +TCP: see how many buffers are in use. */ - uxLastMinQueueSpace = uxCurrentCount; - FreeRTOS_printf( ( "Queue space: lowest %lu\n", uxCurrentCount ) ); - } - } - #endif /* ipconfigCHECK_IP_QUEUE_SPACE */ - } -#endif /* ( ipconfigHAS_PRINTF != 0 ) */ - -/*********************************************************************************************************************** - * Function Name: prvEMACDeferredInterruptHandlerTask () - * Description : The deferred interrupt handler is a standard RTOS task. - * Arguments : pvParameters - * Return Value : none - **********************************************************************************************************************/ -static void prvEMACDeferredInterruptHandlerTask( void * pvParameters ) -{ - NetworkBufferDescriptor_t * pxBufferDescriptor; - int32_t xBytesReceived = 0; - - /* Avoid compiler warning about unreferenced parameter. */ - ( void ) pvParameters; - - /* Used to indicate that xSendEventStructToIPTask() is being called because - * of an Ethernet receive event. */ - IPStackEvent_t xRxEvent; - - uint8_t * buffer_pointer; - - /* Some variables related to monitoring the PHY. */ - TimeOut_t xPhyTime; - TickType_t xPhyRemTime; - const TickType_t ulMaxBlockTime = pdMS_TO_TICKS( 100UL ); - - vTaskSetTimeOutState( &xPhyTime ); - xPhyRemTime = pdMS_TO_TICKS( PHY_LS_LOW_CHECK_TIME_MS ); - - FreeRTOS_printf( ( "Deferred Interrupt Handler Task started\n" ) ); - xTaskToNotify = ether_receive_check_task_handle; - - for( ; ; ) - { - #if ( ipconfigHAS_PRINTF != 0 ) - { - prvMonitorResources(); - } - #endif /* ipconfigHAS_PRINTF != 0 ) */ - - /* Wait for the Ethernet MAC interrupt to indicate that another packet - * has been received. */ - if( xBytesReceived <= 0 ) - { - ulTaskNotifyTake( pdFALSE, ulMaxBlockTime ); - } - - /* See how much data was received. */ - xBytesReceived = R_ETHER_Read_ZC2( ETHER_CHANNEL_0, ( void ** ) &buffer_pointer ); - - if( xBytesReceived < 0 ) - { - /* This is an error. Logged. */ - FreeRTOS_printf( ( "R_ETHER_Read_ZC2: rc = %d\n", xBytesReceived ) ); - } - else if( xBytesReceived > 0 ) - { - /* Allocate a network buffer descriptor that points to a buffer - * large enough to hold the received frame. As this is the simple - * rather than efficient example the received data will just be copied - * into this buffer. */ - pxBufferDescriptor = pxGetNetworkBufferWithDescriptor( ( size_t ) xBytesReceived, 0 ); - - if( pxBufferDescriptor != NULL ) - { - /* pxBufferDescriptor->pucEthernetBuffer now points to an Ethernet - * buffer large enough to hold the received data. Copy the - * received data into pcNetworkBuffer->pucEthernetBuffer. Here it - * is assumed ReceiveData() is a peripheral driver function that - * copies the received data into a buffer passed in as the function's - * parameter. Remember! While is is a simple robust technique - - * it is not efficient. An example that uses a zero copy technique - * is provided further down this page. */ - memcpy( pxBufferDescriptor->pucEthernetBuffer, buffer_pointer, ( size_t ) xBytesReceived ); - /*ReceiveData( pxBufferDescriptor->pucEthernetBuffer ); */ - - /* Set the actual packet length, in case a larger buffer was returned. */ - pxBufferDescriptor->xDataLength = ( size_t ) xBytesReceived; - - R_ETHER_Read_ZC2_BufRelease( ETHER_CHANNEL_0 ); - - /* See if the data contained in the received Ethernet frame needs - * to be processed. NOTE! It is preferable to do this in - * the interrupt service routine itself, which would remove the need - * to unblock this task for packets that don't need processing. */ - if( eConsiderFrameForProcessing( pxBufferDescriptor->pucEthernetBuffer ) == eProcessBuffer ) - { - /* The event about to be sent to the TCP/IP is an Rx event. */ - xRxEvent.eEventType = eNetworkRxEvent; - - /* pvData is used to point to the network buffer descriptor that - * now references the received data. */ - xRxEvent.pvData = ( void * ) pxBufferDescriptor; - - /* Send the data to the TCP/IP stack. */ - if( xSendEventStructToIPTask( &xRxEvent, 0 ) == pdFALSE ) - { - /* The buffer could not be sent to the IP task so the buffer must be released. */ - vReleaseNetworkBufferAndDescriptor( pxBufferDescriptor ); - - /* Make a call to the standard trace macro to log the occurrence. */ - iptraceETHERNET_RX_EVENT_LOST(); - clear_all_ether_rx_discriptors( 0 ); - } - else - { - /* The message was successfully sent to the TCP/IP stack. - * Call the standard trace macro to log the occurrence. */ - iptraceNETWORK_INTERFACE_RECEIVE(); - R_NOP(); - } - } - else - { - /* The Ethernet frame can be dropped, but the Ethernet buffer must be released. */ - vReleaseNetworkBufferAndDescriptor( pxBufferDescriptor ); - } - } - else - { - /* The event was lost because a network buffer was not available. - * Call the standard trace macro to log the occurrence. */ - iptraceETHERNET_RX_EVENT_LOST(); - clear_all_ether_rx_discriptors( 1 ); - FreeRTOS_printf( ( "R_ETHER_Read_ZC2: Cleared descriptors\n" ) ); - } - } - - if( xBytesReceived > 0 ) - { - /* A packet was received. No need to check for the PHY status now, - * but set a timer to check it later on. */ - vTaskSetTimeOutState( &xPhyTime ); - xPhyRemTime = pdMS_TO_TICKS( PHY_LS_HIGH_CHECK_TIME_MS ); - - /* Indicate that the Link Status is high, so that - * xNetworkInterfaceOutput() can send packets. */ - if( xPHYLinkStatus == 0 ) - { - xPHYLinkStatus = 1; - FreeRTOS_printf( ( "prvEMACHandlerTask: PHY LS assume %d\n", xPHYLinkStatus ) ); - } - } - else if( ( xTaskCheckForTimeOut( &xPhyTime, &xPhyRemTime ) != pdFALSE ) || ( FreeRTOS_IsNetworkUp() == pdFALSE ) ) - { - R_ETHER_LinkProcess( 0 ); - - if( xPHYLinkStatus != xReportedStatus ) - { - xPHYLinkStatus = xReportedStatus; - FreeRTOS_printf( ( "prvEMACHandlerTask: PHY LS now %d\n", xPHYLinkStatus ) ); - } - - vTaskSetTimeOutState( &xPhyTime ); - - if( xPHYLinkStatus != 0 ) - { - xPhyRemTime = pdMS_TO_TICKS( PHY_LS_HIGH_CHECK_TIME_MS ); - } - else - { - xPhyRemTime = pdMS_TO_TICKS( PHY_LS_LOW_CHECK_TIME_MS ); - } - } - } -} /* End of function prvEMACDeferredInterruptHandlerTask() */ - - -/*********************************************************************************************************************** - * Function Name: vNetworkInterfaceAllocateRAMToBuffers () - * Description : . - * Arguments : pxNetworkBuffers - * Return Value : none - **********************************************************************************************************************/ -void vNetworkInterfaceAllocateRAMToBuffers( NetworkBufferDescriptor_t pxNetworkBuffers[ ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS ] ) -{ - uint32_t ul; - uint8_t * buffer_address; - - R_EXTERN_SEC( B_ETHERNET_BUFFERS_1 ) - - buffer_address = R_SECTOP( B_ETHERNET_BUFFERS_1 ); - - for( ul = 0; ul < ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS; ul++ ) - { - pxNetworkBuffers[ ul ].pucEthernetBuffer = ( buffer_address + ( ETHER_CFG_BUFSIZE * ul ) ); - } -} /* End of function vNetworkInterfaceAllocateRAMToBuffers() */ - - -/*********************************************************************************************************************** - * Function Name: prvLinkStatusChange () - * Description : Function will be called when the Link Status of the phy has changed ( see ether_callback.c ) - * Arguments : xStatus : true when statyus has become high - * Return Value : void - **********************************************************************************************************************/ -void prvLinkStatusChange( BaseType_t xStatus ) -{ - if( xReportedStatus != xStatus ) - { - FreeRTOS_printf( ( "prvLinkStatusChange( %d )\n", xStatus ) ); - xReportedStatus = xStatus; - } -} - -/*********************************************************************************************************************** - * Function Name: InitializeNetwork () - * Description : - * Arguments : none - * Return Value : pdTRUE, pdFALSE - **********************************************************************************************************************/ -static int InitializeNetwork( void ) -{ - ether_return_t eth_ret; - BaseType_t return_code = pdFALSE; - ether_param_t param; - uint8_t myethaddr[ 6 ] = - { - configMAC_ADDR0, - configMAC_ADDR1, - configMAC_ADDR2, - configMAC_ADDR3, - configMAC_ADDR4, - configMAC_ADDR5 - }; /*XXX Fix me */ - - R_ETHER_PinSet_CHANNEL_0(); - R_ETHER_Initial(); - callback_ether_regist(); - - param.channel = ETHER_CHANNEL_0; - eth_ret = R_ETHER_Control( CONTROL_POWER_ON, param ); /* PHY mode settings, module stop cancellation */ - - if( ETHER_SUCCESS != eth_ret ) - { - return pdFALSE; - } - - eth_ret = R_ETHER_Open_ZC2( ETHER_CHANNEL_0, myethaddr, ETHER_FLAG_OFF ); - - if( ETHER_SUCCESS != eth_ret ) - { - return pdFALSE; - } - - return_code = xTaskCreate( prvEMACDeferredInterruptHandlerTask, - "ETHER_RECEIVE_CHECK_TASK", - 512u, - 0, - configMAX_PRIORITIES - 1, - ðer_receive_check_task_handle ); - - if( pdFALSE == return_code ) - { - return pdFALSE; - } - - return pdTRUE; -} /* End of function InitializeNetwork() */ - - -/*********************************************************************************************************************** - * Function Name: SendData () - * Description : - * Arguments : pucBuffer, length - * Return Value : 0 success, negative fail - **********************************************************************************************************************/ -static int16_t SendData( uint8_t * pucBuffer, - size_t length ) /*TODO complete stub function */ -{ - ether_return_t ret; - uint8_t * pwrite_buffer; - uint16_t write_buf_size; - - /* (1) Retrieve the transmit buffer location controlled by the descriptor. */ - ret = R_ETHER_Write_ZC2_GetBuf( ETHER_CHANNEL_0, ( void ** ) &pwrite_buffer, &write_buf_size ); - - if( ETHER_SUCCESS == ret ) - { - if( write_buf_size >= length ) - { - memcpy( pwrite_buffer, pucBuffer, length ); - } - - if( length < ETHER_BUFSIZE_MIN ) /*under minimum*/ - { - memset( ( pwrite_buffer + length ), 0, ( ETHER_BUFSIZE_MIN - length ) ); /*padding*/ - length = ETHER_BUFSIZE_MIN; /*resize*/ - } - - ret = R_ETHER_Write_ZC2_SetBuf( ETHER_CHANNEL_0, ( uint16_t ) length ); - ret = R_ETHER_CheckWrite( ETHER_CHANNEL_0 ); - } - - if( ETHER_SUCCESS != ret ) - { - return -5; /* XXX return meaningful value */ - } - else - { - return 0; - } -} /* End of function SendData() */ - - -/*********************************************************************************************************************** -* Function Name: EINT_Trig_isr -* Description : Standard frame received interrupt handler -* Arguments : ectrl - EDMAC and ETHERC control structure -* Return Value : None -* Note : This callback function is executed when EINT0 interrupt occurred. -***********************************************************************************************************************/ -void EINT_Trig_isr( void * ectrl ) -{ - ether_cb_arg_t * pdecode; - BaseType_t xHigherPriorityTaskWoken = pdFALSE; - - pdecode = ( ether_cb_arg_t * ) ectrl; - - if( pdecode->status_eesr & 0x00040000 ) /* EDMAC FR (Frame Receive Event) interrupt */ - { - if( xTaskToNotify != NULL ) - { - vTaskNotifyGiveFromISR( ether_receive_check_task_handle, &xHigherPriorityTaskWoken ); - } - - /* If xHigherPriorityTaskWoken is now set to pdTRUE then a context switch - * should be performed to ensure the interrupt returns directly to the highest - * priority task. The macro used for this purpose is dependent on the port in - * use and may be called portEND_SWITCHING_ISR(). */ - portYIELD_FROM_ISR( xHigherPriorityTaskWoken ); - /*TODO complete interrupt handler for other events. */ - } -} /* End of function EINT_Trig_isr() */ - - -static void clear_all_ether_rx_discriptors( uint32_t event ) -{ - int32_t xBytesReceived; - uint8_t * buffer_pointer; - - /* Avoid compiler warning about unreferenced parameter. */ - ( void ) event; - - while( 1 ) - { - /* See how much data was received. */ - xBytesReceived = R_ETHER_Read_ZC2( ETHER_CHANNEL_0, ( void ** ) &buffer_pointer ); - - if( 0 > xBytesReceived ) - { - /* This is an error. Ignored. */ - } - else if( 0 < xBytesReceived ) - { - R_ETHER_Read_ZC2_BufRelease( ETHER_CHANNEL_0 ); - iptraceETHERNET_RX_EVENT_LOST(); - } - else - { - break; - } - } -} - -/*********************************************************************************************************************** - * End of file "NetworkInterface.c" - **********************************************************************************************************************/ +/***********************************************************************************************************************
+* DISCLAIMER
+* This software is supplied by Renesas Electronics Corporation and is only intended for use with Renesas products. No
+* other uses are authorized. This software is owned by Renesas Electronics Corporation and is protected under all
+* applicable laws, including copyright laws.
+* THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING
+* THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED. TO THE MAXIMUM
+* EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES
+* SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR ANY REASON RELATED TO THIS
+* SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+* Renesas reserves the right, without notice, to make changes to this software and to discontinue the availability of
+* this software. By using this software, you agree to the additional terms and conditions found by accessing the
+* following link:
+* http://www.renesas.com/disclaimer
+*
+* Copyright (C) 2018 Renesas Electronics Corporation. All rights reserved.
+***********************************************************************************************************************/
+
+/***********************************************************************************************************************
+* File Name : NetworkInterface.c
+* Device(s) : RX
+* Description : Interfaces FreeRTOS TCP/IP stack to RX Ethernet driver.
+***********************************************************************************************************************/
+
+/***********************************************************************************************************************
+* History : DD.MM.YYYY Version Description
+* : 07.03.2018 0.1 Development
+***********************************************************************************************************************/
+
+/***********************************************************************************************************************
+* Includes <System Includes> , "Project Includes"
+***********************************************************************************************************************/
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* FreeRTOS includes. */
+#include "FreeRTOS.h"
+#include "task.h"
+#include "FreeRTOS_IP.h"
+#include "FreeRTOS_IP_Private.h"
+/*#include "FreeRTOS_DNS.h" */
+#include "NetworkBufferManagement.h"
+#include "NetworkInterface.h"
+
+#include "r_ether_rx_if.h"
+#include "r_pinset.h"
+
+/***********************************************************************************************************************
+ * Macro definitions
+ **********************************************************************************************************************/
+#define ETHER_BUFSIZE_MIN 60
+
+#if defined( BSP_MCU_RX65N ) || defined( BSP_MCU_RX64M ) || defined( BSP_MCU_RX71M )
+ #if ETHER_CFG_MODE_SEL == 0
+ #define R_ETHER_PinSet_CHANNEL_0() R_ETHER_PinSet_ETHERC0_MII()
+ #elif ETHER_CFG_MODE_SEL == 1
+ #define R_ETHER_PinSet_CHANNEL_0() R_ETHER_PinSet_ETHERC0_RMII()
+ #endif
+#elif defined( BSP_MCU_RX63N )
+ #if ETHER_CFG_MODE_SEL == 0
+ #define R_ETHER_PinSet_CHANNEL_0() R_ETHER_PinSet_ETHERC_MII()
+ #elif ETHER_CFG_MODE_SEL == 1
+ #define R_ETHER_PinSet_CHANNEL_0() R_ETHER_PinSet_ETHERC_RMII()
+ #endif
+#endif /* if defined( BSP_MCU_RX65N ) || defined( BSP_MCU_RX64M ) || defined( BSP_MCU_RX71M ) */
+
+#ifndef PHY_LS_HIGH_CHECK_TIME_MS
+
+/* Check if the LinkSStatus in the PHY is still high after 2 seconds of not
+ * receiving packets. */
+ #define PHY_LS_HIGH_CHECK_TIME_MS 2000
+#endif
+
+#ifndef PHY_LS_LOW_CHECK_TIME_MS
+ /* Check if the LinkSStatus in the PHY is still low every second. */
+ #define PHY_LS_LOW_CHECK_TIME_MS 1000
+#endif
+
+/***********************************************************************************************************************
+ * Private global variables and functions
+ **********************************************************************************************************************/
+typedef enum
+{
+ eMACInit, /* Must initialise MAC. */
+ eMACPass, /* Initialisation was successful. */
+ eMACFailed, /* Initialisation failed. */
+} eMAC_INIT_STATUS_TYPE;
+
+static TaskHandle_t ether_receive_check_task_handle = 0;
+static TaskHandle_t ether_link_check_task_handle = 0;
+static TaskHandle_t xTaskToNotify = NULL;
+static BaseType_t xPHYLinkStatus;
+static BaseType_t xReportedStatus;
+static eMAC_INIT_STATUS_TYPE xMacInitStatus = eMACInit;
+
+static int16_t SendData( uint8_t * pucBuffer,
+ size_t length );
+static int InitializeNetwork( void );
+static void prvEMACDeferredInterruptHandlerTask( void * pvParameters );
+static void clear_all_ether_rx_discriptors( uint32_t event );
+
+int32_t callback_ether_regist( void );
+void EINT_Trig_isr( void * );
+void get_random_number( uint8_t * data,
+ uint32_t len );
+
+void prvLinkStatusChange( BaseType_t xStatus );
+#if ( ipconfigHAS_PRINTF != 0 )
+ static void prvMonitorResources( void );
+#endif
+
+/***********************************************************************************************************************
+ * Function Name: xNetworkInterfaceInitialise ()
+ * Description : Initialization of Ethernet driver.
+ * Arguments : none
+ * Return Value : pdPASS, pdFAIL
+ **********************************************************************************************************************/
+BaseType_t xNetworkInterfaceInitialise( void )
+{
+ BaseType_t xReturn;
+
+ if( xMacInitStatus == eMACInit )
+ {
+ /*
+ * Perform the hardware specific network initialization here using the Ethernet driver library to initialize the
+ * Ethernet hardware, initialize DMA descriptors, and perform a PHY auto-negotiation to obtain a network link.
+ *
+ * InitialiseNetwork() uses Ethernet peripheral driver library function, and returns 0 if the initialization fails.
+ */
+ if( InitializeNetwork() == pdFALSE )
+ {
+ xMacInitStatus = eMACFailed;
+ }
+ else
+ {
+ /* Indicate that the MAC initialisation succeeded. */
+ xMacInitStatus = eMACPass;
+ }
+
+ FreeRTOS_printf( ( "InitializeNetwork returns %s\n", ( xMacInitStatus == eMACPass ) ? "OK" : " Fail" ) );
+ }
+
+ if( xMacInitStatus == eMACPass )
+ {
+ xReturn = xPHYLinkStatus;
+ }
+ else
+ {
+ xReturn = pdFAIL;
+ }
+
+ FreeRTOS_printf( ( "xNetworkInterfaceInitialise returns %d\n", xReturn ) );
+
+ return xReturn;
+} /* End of function xNetworkInterfaceInitialise() */
+
+
+/***********************************************************************************************************************
+ * Function Name: xNetworkInterfaceOutput ()
+ * Description : Simple network output interface.
+ * Arguments : pxDescriptor, xReleaseAfterSend
+ * Return Value : pdTRUE, pdFALSE
+ **********************************************************************************************************************/
+BaseType_t xNetworkInterfaceOutput( NetworkBufferDescriptor_t * const pxDescriptor,
+ BaseType_t xReleaseAfterSend )
+{
+ BaseType_t xReturn = pdFALSE;
+
+ /* Simple network interfaces (as opposed to more efficient zero copy network
+ * interfaces) just use Ethernet peripheral driver library functions to copy
+ * data from the FreeRTOS+TCP buffer into the peripheral driver's own buffer.
+ * This example assumes SendData() is a peripheral driver library function that
+ * takes a pointer to the start of the data to be sent and the length of the
+ * data to be sent as two separate parameters. The start of the data is located
+ * by pxDescriptor->pucEthernetBuffer. The length of the data is located
+ * by pxDescriptor->xDataLength. */
+ if( xPHYLinkStatus != 0 )
+ {
+ if( SendData( pxDescriptor->pucEthernetBuffer, pxDescriptor->xDataLength ) >= 0 )
+ {
+ xReturn = pdTRUE;
+ /* Call the standard trace macro to log the send event. */
+ iptraceNETWORK_INTERFACE_TRANSMIT();
+ }
+ }
+ else
+ {
+ /* As the PHY Link Status is low, it makes no sense trying to deliver a packet. */
+ }
+
+ if( xReleaseAfterSend != pdFALSE )
+ {
+ /* It is assumed SendData() copies the data out of the FreeRTOS+TCP Ethernet
+ * buffer. The Ethernet buffer is therefore no longer needed, and must be
+ * freed for re-use. */
+ vReleaseNetworkBufferAndDescriptor( pxDescriptor );
+ }
+
+ return xReturn;
+} /* End of function xNetworkInterfaceOutput() */
+
+
+#if ( ipconfigHAS_PRINTF != 0 )
+ static void prvMonitorResources()
+ {
+ static UBaseType_t uxLastMinBufferCount = 0u;
+ static UBaseType_t uxCurrentBufferCount = 0u;
+ static size_t uxMinLastSize = 0uL;
+ static size_t uxCurLastSize = 0uL;
+ size_t uxMinSize;
+ size_t uxCurSize;
+
+ uxCurrentBufferCount = uxGetMinimumFreeNetworkBuffers();
+
+ if( uxLastMinBufferCount != uxCurrentBufferCount )
+ {
+ /* The logging produced below may be helpful
+ * while tuning +TCP: see how many buffers are in use. */
+ uxLastMinBufferCount = uxCurrentBufferCount;
+ FreeRTOS_printf( ( "Network buffers: %lu lowest %lu\n",
+ uxGetNumberOfFreeNetworkBuffers(), uxCurrentBufferCount ) );
+ }
+
+ uxMinSize = xPortGetMinimumEverFreeHeapSize();
+ uxCurSize = xPortGetFreeHeapSize();
+
+ if( uxMinLastSize != uxMinSize )
+ {
+ uxCurLastSize = uxCurSize;
+ uxMinLastSize = uxMinSize;
+ FreeRTOS_printf( ( "Heap: current %lu lowest %lu\n", uxCurSize, uxMinSize ) );
+ }
+
+ #if ( ipconfigCHECK_IP_QUEUE_SPACE != 0 )
+ {
+ static UBaseType_t uxLastMinQueueSpace = 0;
+ UBaseType_t uxCurrentCount = 0u;
+
+ uxCurrentCount = uxGetMinimumIPQueueSpace();
+
+ if( uxLastMinQueueSpace != uxCurrentCount )
+ {
+ /* The logging produced below may be helpful
+ * while tuning +TCP: see how many buffers are in use. */
+ uxLastMinQueueSpace = uxCurrentCount;
+ FreeRTOS_printf( ( "Queue space: lowest %lu\n", uxCurrentCount ) );
+ }
+ }
+ #endif /* ipconfigCHECK_IP_QUEUE_SPACE */
+ }
+#endif /* ( ipconfigHAS_PRINTF != 0 ) */
+
+/***********************************************************************************************************************
+ * Function Name: prvEMACDeferredInterruptHandlerTask ()
+ * Description : The deferred interrupt handler is a standard RTOS task.
+ * Arguments : pvParameters
+ * Return Value : none
+ **********************************************************************************************************************/
+static void prvEMACDeferredInterruptHandlerTask( void * pvParameters )
+{
+ NetworkBufferDescriptor_t * pxBufferDescriptor;
+ int32_t xBytesReceived = 0;
+
+ /* Avoid compiler warning about unreferenced parameter. */
+ ( void ) pvParameters;
+
+ /* Used to indicate that xSendEventStructToIPTask() is being called because
+ * of an Ethernet receive event. */
+ IPStackEvent_t xRxEvent;
+
+ uint8_t * buffer_pointer;
+
+ /* Some variables related to monitoring the PHY. */
+ TimeOut_t xPhyTime;
+ TickType_t xPhyRemTime;
+ const TickType_t ulMaxBlockTime = pdMS_TO_TICKS( 100UL );
+
+ vTaskSetTimeOutState( &xPhyTime );
+ xPhyRemTime = pdMS_TO_TICKS( PHY_LS_LOW_CHECK_TIME_MS );
+
+ FreeRTOS_printf( ( "Deferred Interrupt Handler Task started\n" ) );
+ xTaskToNotify = ether_receive_check_task_handle;
+
+ for( ; ; )
+ {
+ #if ( ipconfigHAS_PRINTF != 0 )
+ {
+ prvMonitorResources();
+ }
+ #endif /* ipconfigHAS_PRINTF != 0 ) */
+
+ /* Wait for the Ethernet MAC interrupt to indicate that another packet
+ * has been received. */
+ if( xBytesReceived <= 0 )
+ {
+ ulTaskNotifyTake( pdFALSE, ulMaxBlockTime );
+ }
+
+ /* See how much data was received. */
+ xBytesReceived = R_ETHER_Read_ZC2( ETHER_CHANNEL_0, ( void ** ) &buffer_pointer );
+
+ if( xBytesReceived < 0 )
+ {
+ /* This is an error. Logged. */
+ FreeRTOS_printf( ( "R_ETHER_Read_ZC2: rc = %d\n", xBytesReceived ) );
+ }
+ else if( xBytesReceived > 0 )
+ {
+ /* Allocate a network buffer descriptor that points to a buffer
+ * large enough to hold the received frame. As this is the simple
+ * rather than efficient example the received data will just be copied
+ * into this buffer. */
+ pxBufferDescriptor = pxGetNetworkBufferWithDescriptor( ( size_t ) xBytesReceived, 0 );
+
+ if( pxBufferDescriptor != NULL )
+ {
+ /* pxBufferDescriptor->pucEthernetBuffer now points to an Ethernet
+ * buffer large enough to hold the received data. Copy the
+ * received data into pcNetworkBuffer->pucEthernetBuffer. Here it
+ * is assumed ReceiveData() is a peripheral driver function that
+ * copies the received data into a buffer passed in as the function's
+ * parameter. Remember! While is is a simple robust technique -
+ * it is not efficient. An example that uses a zero copy technique
+ * is provided further down this page. */
+ memcpy( pxBufferDescriptor->pucEthernetBuffer, buffer_pointer, ( size_t ) xBytesReceived );
+ /*ReceiveData( pxBufferDescriptor->pucEthernetBuffer ); */
+
+ /* Set the actual packet length, in case a larger buffer was returned. */
+ pxBufferDescriptor->xDataLength = ( size_t ) xBytesReceived;
+
+ R_ETHER_Read_ZC2_BufRelease( ETHER_CHANNEL_0 );
+
+ /* See if the data contained in the received Ethernet frame needs
+ * to be processed. NOTE! It is preferable to do this in
+ * the interrupt service routine itself, which would remove the need
+ * to unblock this task for packets that don't need processing. */
+ if( eConsiderFrameForProcessing( pxBufferDescriptor->pucEthernetBuffer ) == eProcessBuffer )
+ {
+ /* The event about to be sent to the TCP/IP is an Rx event. */
+ xRxEvent.eEventType = eNetworkRxEvent;
+
+ /* pvData is used to point to the network buffer descriptor that
+ * now references the received data. */
+ xRxEvent.pvData = ( void * ) pxBufferDescriptor;
+
+ /* Send the data to the TCP/IP stack. */
+ if( xSendEventStructToIPTask( &xRxEvent, 0 ) == pdFALSE )
+ {
+ /* The buffer could not be sent to the IP task so the buffer must be released. */
+ vReleaseNetworkBufferAndDescriptor( pxBufferDescriptor );
+
+ /* Make a call to the standard trace macro to log the occurrence. */
+ iptraceETHERNET_RX_EVENT_LOST();
+ clear_all_ether_rx_discriptors( 0 );
+ }
+ else
+ {
+ /* The message was successfully sent to the TCP/IP stack.
+ * Call the standard trace macro to log the occurrence. */
+ iptraceNETWORK_INTERFACE_RECEIVE();
+ R_NOP();
+ }
+ }
+ else
+ {
+ /* The Ethernet frame can be dropped, but the Ethernet buffer must be released. */
+ vReleaseNetworkBufferAndDescriptor( pxBufferDescriptor );
+ }
+ }
+ else
+ {
+ /* The event was lost because a network buffer was not available.
+ * Call the standard trace macro to log the occurrence. */
+ iptraceETHERNET_RX_EVENT_LOST();
+ clear_all_ether_rx_discriptors( 1 );
+ FreeRTOS_printf( ( "R_ETHER_Read_ZC2: Cleared descriptors\n" ) );
+ }
+ }
+
+ if( xBytesReceived > 0 )
+ {
+ /* A packet was received. No need to check for the PHY status now,
+ * but set a timer to check it later on. */
+ vTaskSetTimeOutState( &xPhyTime );
+ xPhyRemTime = pdMS_TO_TICKS( PHY_LS_HIGH_CHECK_TIME_MS );
+
+ /* Indicate that the Link Status is high, so that
+ * xNetworkInterfaceOutput() can send packets. */
+ if( xPHYLinkStatus == 0 )
+ {
+ xPHYLinkStatus = 1;
+ FreeRTOS_printf( ( "prvEMACHandlerTask: PHY LS assume %d\n", xPHYLinkStatus ) );
+ }
+ }
+ else if( ( xTaskCheckForTimeOut( &xPhyTime, &xPhyRemTime ) != pdFALSE ) || ( FreeRTOS_IsNetworkUp() == pdFALSE ) )
+ {
+ R_ETHER_LinkProcess( 0 );
+
+ if( xPHYLinkStatus != xReportedStatus )
+ {
+ xPHYLinkStatus = xReportedStatus;
+ FreeRTOS_printf( ( "prvEMACHandlerTask: PHY LS now %d\n", xPHYLinkStatus ) );
+ }
+
+ vTaskSetTimeOutState( &xPhyTime );
+
+ if( xPHYLinkStatus != 0 )
+ {
+ xPhyRemTime = pdMS_TO_TICKS( PHY_LS_HIGH_CHECK_TIME_MS );
+ }
+ else
+ {
+ xPhyRemTime = pdMS_TO_TICKS( PHY_LS_LOW_CHECK_TIME_MS );
+ }
+ }
+ }
+} /* End of function prvEMACDeferredInterruptHandlerTask() */
+
+
+/***********************************************************************************************************************
+ * Function Name: vNetworkInterfaceAllocateRAMToBuffers ()
+ * Description : .
+ * Arguments : pxNetworkBuffers
+ * Return Value : none
+ **********************************************************************************************************************/
+void vNetworkInterfaceAllocateRAMToBuffers( NetworkBufferDescriptor_t pxNetworkBuffers[ ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS ] )
+{
+ uint32_t ul;
+ uint8_t * buffer_address;
+
+ R_EXTERN_SEC( B_ETHERNET_BUFFERS_1 )
+
+ buffer_address = R_SECTOP( B_ETHERNET_BUFFERS_1 );
+
+ for( ul = 0; ul < ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS; ul++ )
+ {
+ pxNetworkBuffers[ ul ].pucEthernetBuffer = ( buffer_address + ( ETHER_CFG_BUFSIZE * ul ) );
+ }
+} /* End of function vNetworkInterfaceAllocateRAMToBuffers() */
+
+
+/***********************************************************************************************************************
+ * Function Name: prvLinkStatusChange ()
+ * Description : Function will be called when the Link Status of the phy has changed ( see ether_callback.c )
+ * Arguments : xStatus : true when statyus has become high
+ * Return Value : void
+ **********************************************************************************************************************/
+void prvLinkStatusChange( BaseType_t xStatus )
+{
+ if( xReportedStatus != xStatus )
+ {
+ FreeRTOS_printf( ( "prvLinkStatusChange( %d )\n", xStatus ) );
+ xReportedStatus = xStatus;
+ }
+}
+
+/***********************************************************************************************************************
+ * Function Name: InitializeNetwork ()
+ * Description :
+ * Arguments : none
+ * Return Value : pdTRUE, pdFALSE
+ **********************************************************************************************************************/
+static int InitializeNetwork( void )
+{
+ ether_return_t eth_ret;
+ BaseType_t return_code = pdFALSE;
+ ether_param_t param;
+ uint8_t myethaddr[ 6 ] =
+ {
+ configMAC_ADDR0,
+ configMAC_ADDR1,
+ configMAC_ADDR2,
+ configMAC_ADDR3,
+ configMAC_ADDR4,
+ configMAC_ADDR5
+ }; /*XXX Fix me */
+
+ R_ETHER_PinSet_CHANNEL_0();
+ R_ETHER_Initial();
+ callback_ether_regist();
+
+ param.channel = ETHER_CHANNEL_0;
+ eth_ret = R_ETHER_Control( CONTROL_POWER_ON, param ); /* PHY mode settings, module stop cancellation */
+
+ if( ETHER_SUCCESS != eth_ret )
+ {
+ return pdFALSE;
+ }
+
+ eth_ret = R_ETHER_Open_ZC2( ETHER_CHANNEL_0, myethaddr, ETHER_FLAG_OFF );
+
+ if( ETHER_SUCCESS != eth_ret )
+ {
+ return pdFALSE;
+ }
+
+ return_code = xTaskCreate( prvEMACDeferredInterruptHandlerTask,
+ "ETHER_RECEIVE_CHECK_TASK",
+ 512u,
+ 0,
+ configMAX_PRIORITIES - 1,
+ ðer_receive_check_task_handle );
+
+ if( pdFALSE == return_code )
+ {
+ return pdFALSE;
+ }
+
+ return pdTRUE;
+} /* End of function InitializeNetwork() */
+
+
+/***********************************************************************************************************************
+ * Function Name: SendData ()
+ * Description :
+ * Arguments : pucBuffer, length
+ * Return Value : 0 success, negative fail
+ **********************************************************************************************************************/
+static int16_t SendData( uint8_t * pucBuffer,
+ size_t length ) /*TODO complete stub function */
+{
+ ether_return_t ret;
+ uint8_t * pwrite_buffer;
+ uint16_t write_buf_size;
+
+ /* (1) Retrieve the transmit buffer location controlled by the descriptor. */
+ ret = R_ETHER_Write_ZC2_GetBuf( ETHER_CHANNEL_0, ( void ** ) &pwrite_buffer, &write_buf_size );
+
+ if( ETHER_SUCCESS == ret )
+ {
+ if( write_buf_size >= length )
+ {
+ memcpy( pwrite_buffer, pucBuffer, length );
+ }
+
+ if( length < ETHER_BUFSIZE_MIN ) /*under minimum*/
+ {
+ memset( ( pwrite_buffer + length ), 0, ( ETHER_BUFSIZE_MIN - length ) ); /*padding*/
+ length = ETHER_BUFSIZE_MIN; /*resize*/
+ }
+
+ ret = R_ETHER_Write_ZC2_SetBuf( ETHER_CHANNEL_0, ( uint16_t ) length );
+ ret = R_ETHER_CheckWrite( ETHER_CHANNEL_0 );
+ }
+
+ if( ETHER_SUCCESS != ret )
+ {
+ return -5; /* XXX return meaningful value */
+ }
+ else
+ {
+ return 0;
+ }
+} /* End of function SendData() */
+
+
+/***********************************************************************************************************************
+* Function Name: EINT_Trig_isr
+* Description : Standard frame received interrupt handler
+* Arguments : ectrl - EDMAC and ETHERC control structure
+* Return Value : None
+* Note : This callback function is executed when EINT0 interrupt occurred.
+***********************************************************************************************************************/
+void EINT_Trig_isr( void * ectrl )
+{
+ ether_cb_arg_t * pdecode;
+ BaseType_t xHigherPriorityTaskWoken = pdFALSE;
+
+ pdecode = ( ether_cb_arg_t * ) ectrl;
+
+ if( pdecode->status_eesr & 0x00040000 ) /* EDMAC FR (Frame Receive Event) interrupt */
+ {
+ if( xTaskToNotify != NULL )
+ {
+ vTaskNotifyGiveFromISR( ether_receive_check_task_handle, &xHigherPriorityTaskWoken );
+ }
+
+ /* If xHigherPriorityTaskWoken is now set to pdTRUE then a context switch
+ * should be performed to ensure the interrupt returns directly to the highest
+ * priority task. The macro used for this purpose is dependent on the port in
+ * use and may be called portEND_SWITCHING_ISR(). */
+ portYIELD_FROM_ISR( xHigherPriorityTaskWoken );
+ /*TODO complete interrupt handler for other events. */
+ }
+} /* End of function EINT_Trig_isr() */
+
+
+static void clear_all_ether_rx_discriptors( uint32_t event )
+{
+ int32_t xBytesReceived;
+ uint8_t * buffer_pointer;
+
+ /* Avoid compiler warning about unreferenced parameter. */
+ ( void ) event;
+
+ while( 1 )
+ {
+ /* See how much data was received. */
+ xBytesReceived = R_ETHER_Read_ZC2( ETHER_CHANNEL_0, ( void ** ) &buffer_pointer );
+
+ if( 0 > xBytesReceived )
+ {
+ /* This is an error. Ignored. */
+ }
+ else if( 0 < xBytesReceived )
+ {
+ R_ETHER_Read_ZC2_BufRelease( ETHER_CHANNEL_0 );
+ iptraceETHERNET_RX_EVENT_LOST();
+ }
+ else
+ {
+ break;
+ }
+ }
+}
+
+/***********************************************************************************************************************
+ * End of file "NetworkInterface.c"
+ **********************************************************************************************************************/
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