From: richardbarry Date: Sun, 5 Jul 2009 19:50:52 +0000 (+0000) Subject: Update EMAC driver. X-Git-Tag: V5.4.1~25 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=d9eabea54510bc6b301f2f32b9c7a484c86e4290;p=freertos Update EMAC driver. git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@800 1d2547de-c912-0410-9cb9-b8ca96c0e9e2 --- diff --git a/Demo/CORTEX_LPC1768_GCC_Rowley/RTOSDemo.hzp b/Demo/CORTEX_LPC1768_GCC_Rowley/RTOSDemo.hzp index 284f7827f..644e120b7 100644 --- a/Demo/CORTEX_LPC1768_GCC_Rowley/RTOSDemo.hzp +++ b/Demo/CORTEX_LPC1768_GCC_Rowley/RTOSDemo.hzp @@ -25,13 +25,15 @@ - + - + + + diff --git a/Demo/CORTEX_LPC1768_GCC_Rowley/RTOSDemo.hzs b/Demo/CORTEX_LPC1768_GCC_Rowley/RTOSDemo.hzs index a7228d4d7..df6f6f47f 100644 --- a/Demo/CORTEX_LPC1768_GCC_Rowley/RTOSDemo.hzs +++ b/Demo/CORTEX_LPC1768_GCC_Rowley/RTOSDemo.hzs @@ -19,6 +19,9 @@ + + + @@ -49,7 +52,12 @@ - + + + + + + - + diff --git a/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/EthDev.h b/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/EthDev.h index 1e1743870..b2a949c39 100644 --- a/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/EthDev.h +++ b/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/EthDev.h @@ -103,7 +103,7 @@ void RequestSend(void); unsigned int Rdy4Tx(void); void DoSend_EMAC(unsigned short FrameSize); void vEMACWaitForInput( void ); -unsigned int uiGetEMACRxData( unsigned char *ucBuffer ); - +unsigned long ulGetEMACRxData( void ); +void vSendEMACTxData( unsigned short usTxDataLen ); #endif diff --git a/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/EthDev_LPC17xx.h b/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/EthDev_LPC17xx.h index 3af1e8f2d..93134430f 100644 --- a/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/EthDev_LPC17xx.h +++ b/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/EthDev_LPC17xx.h @@ -25,8 +25,8 @@ #include /* EMAC Memory Buffer configuration for 16K Ethernet RAM. */ -#define NUM_RX_FRAG 4 /* Num.of RX Fragments 4*1536= 6.0kB */ -#define NUM_TX_FRAG 3 /* Num.of TX Fragments 3*1536= 4.6kB */ +#define NUM_RX_FRAG 3 /* Num.of RX Fragments. */ +#define NUM_TX_FRAG 2 /* Num.of TX Fragments. */ #define ETH_FRAG_SIZE 1536 /* Packet Fragment size 1536 Bytes */ #define ETH_MAX_FLEN 1536 /* Max. Ethernet Frame Size */ @@ -57,8 +57,7 @@ typedef struct { /* TX Status struct */ #define RX_STAT_BASE (RX_DESC_BASE + NUM_RX_FRAG*(2*4)) /* 2 * uint32_t, see RX_DESC_TypeDef */ #define TX_DESC_BASE (RX_STAT_BASE + NUM_RX_FRAG*(2*4)) /* 2 * uint32_t, see RX_STAT_TypeDef */ #define TX_STAT_BASE (TX_DESC_BASE + NUM_TX_FRAG*(2*4)) /* 2 * uint32_t, see TX_DESC_TypeDef */ -#define RX_BUF_BASE (TX_STAT_BASE + NUM_TX_FRAG*(1*4)) /* 1 * uint32_t, see TX_STAT_TypeDef */ -#define TX_BUF_BASE (RX_BUF_BASE + NUM_RX_FRAG*ETH_FRAG_SIZE) +#define ETH_BUF_BASE (TX_STAT_BASE + NUM_TX_FRAG*(1*4)) /* 1 * uint32_t, see TX_STAT_TypeDef */ /* RX and TX descriptor and status definitions. */ #define RX_DESC_PACKET(i) (*(unsigned int *)(RX_DESC_BASE + 8*i)) @@ -68,9 +67,8 @@ typedef struct { /* TX Status struct */ #define TX_DESC_PACKET(i) (*(unsigned int *)(TX_DESC_BASE + 8*i)) #define TX_DESC_CTRL(i) (*(unsigned int *)(TX_DESC_BASE+4 + 8*i)) #define TX_STAT_INFO(i) (*(unsigned int *)(TX_STAT_BASE + 4*i)) -#define RX_BUF(i) (RX_BUF_BASE + ETH_FRAG_SIZE*i) -#define TX_BUF(i) (TX_BUF_BASE + ETH_FRAG_SIZE*i) - +#define ETH_BUF(i) ( ETH_BUF_BASE + ETH_FRAG_SIZE*i ) +#define ETH_NUM_BUFFERS ( NUM_TX_FRAG + NUM_RX_FRAG + 1 ) /* There are in fact 2 more buffers than descriptors as the two Tx descriptors use the same buffer to speed up the uip Tx. */ /* MAC Configuration Register 1 */ diff --git a/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/emac.c b/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/emac.c index 5b5055a96..5e350edab 100644 --- a/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/emac.c +++ b/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/emac.c @@ -30,8 +30,16 @@ #define emacFULL_DUPLEX_ENABLED ( 0x0004 ) #define emac10BASE_T_MODE ( 0x0002 ) +/* If no buffers are available, then wait this long before looking again.... */ +#define emacBUFFER_WAIT_DELAY ( 3 / portTICK_RATE_MS ) + +/* ...and don't look more than this many times. */ +#define emacBUFFER_WAIT_ATTEMPTS ( 30 ) + +#define emacTX_DESC_INDEX ( 0 ) + /* The semaphore used to wake the uIP task when data arives. */ -xSemaphoreHandle xEMACSemaphore = NULL; +extern xSemaphoreHandle xEMACSemaphore; static unsigned short *rptr; static unsigned short *tptr; @@ -40,6 +48,21 @@ static void prvInitDescriptors( void ); static void prvSetupEMACHardware( void ); static void prvConfigurePHY( void ); static long prvSetupLinkStatus( void ); +static unsigned char *prvGetNextBuffer( void ); +static void prvReturnBuffer( unsigned char *pucBuffer ); + +/* Each ucBufferInUse index corresponds to a position in the same index in the +ucMACBuffers array. If the index contains a 1 then the buffer within +ucMACBuffers is in use, if it contains a 0 then the buffer is free. */ +static unsigned char ucBufferInUse[ ETH_NUM_BUFFERS ] = { pdFALSE }; + +/* The uip_buffer is not a fixed array, but instead gets pointed to the buffers +allocated within this file. */ +unsigned char * uip_buf; + +/* Store the length of the data being sent so the data can be sent twice. The +value will be set back to 0 once the data has been sent twice. */ +static unsigned short usSendLen = 0; /*-----------------------------------------------------------*/ @@ -74,7 +97,7 @@ long x; } /*-----------------------------------------------------------*/ -unsigned short read_PHY( unsigned char ucPhyReg, portBASE_TYPE *pxStatus ) +unsigned short read_PHY( unsigned char ucPhyReg, long *plStatus ) { long x; const long lMaxTime = 10; @@ -97,23 +120,67 @@ const long lMaxTime = 10; if( x >= lMaxTime ) { - *pxStatus = pdFAIL; + *plStatus = pdFAIL; } return( MAC_MRDD ); } /*-----------------------------------------------------------*/ -static void prvInitDescriptors( void ) +static unsigned char *prvGetNextBuffer( void ) { long x; +unsigned char *pucReturn = NULL; +unsigned long ulAttempts = 0; + + while( pucReturn == NULL ) + { + /* Look through the buffers to find one that is not in use by + anything else. */ + for( x = 0; x < ETH_NUM_BUFFERS; x++ ) + { + if( ucBufferInUse[ x ] == pdFALSE ) + { + ucBufferInUse[ x ] = pdTRUE; + pucReturn = ( unsigned char * ) ETH_BUF( x ); + break; + } + } + + /* Was a buffer found? */ + if( pucReturn == NULL ) + { + ulAttempts++; + + if( ulAttempts >= emacBUFFER_WAIT_ATTEMPTS ) + { + break; + } + + /* Wait then look again. */ + vTaskDelay( emacBUFFER_WAIT_DELAY ); + } + } + + return pucReturn; +} +/*-----------------------------------------------------------*/ + +static void prvInitDescriptors( void ) +{ +long x, lNextBuffer = 0; for( x = 0; x < NUM_RX_FRAG; x++ ) { - RX_DESC_PACKET( x ) = RX_BUF( x ); + /* Allocate the next Ethernet buffer to this descriptor. */ + RX_DESC_PACKET( x ) = ETH_BUF( lNextBuffer ); RX_DESC_CTRL( x ) = RCTRL_INT | ( ETH_FRAG_SIZE - 1 ); RX_STAT_INFO( x ) = 0; RX_STAT_HASHCRC( x ) = 0; + + /* The Ethernet buffer is now in use. */ + ucBufferInUse[ lNextBuffer ] = pdTRUE; + lNextBuffer++; } /* Set EMAC Receive Descriptor Registers. */ @@ -124,9 +191,11 @@ long x; /* Rx Descriptors Point to 0 */ MAC_RXCONSUMEINDEX = 0; + /* A buffer is not allocated to the Tx descriptors until they are actually + used. */ for( x = 0; x < NUM_TX_FRAG; x++ ) { - TX_DESC_PACKET( x ) = TX_BUF( x ); + TX_DESC_PACKET( x ) = NULL; TX_DESC_CTRL( x ) = 0; TX_STAT_INFO( x ) = 0; } @@ -144,7 +213,7 @@ long x; static void prvSetupEMACHardware( void ) { unsigned short us; -long x; +long x, lDummy; /* Enable P1 Ethernet Pins. */ PINSEL2 = emacPINSEL2_VALUE; @@ -184,7 +253,7 @@ long x; for( x = 0; x < 100; x++ ) { vTaskDelay( emacSHORT_DELAY * 5 ); - us = read_PHY( PHY_REG_BMCR, &us ); + us = read_PHY( PHY_REG_BMCR, &lDummy ); if( !( us & MCFG_RES_MII ) ) { /* Reset complete */ @@ -197,7 +266,7 @@ long x; static void prvConfigurePHY( void ) { unsigned short us; -long x; +long x, lDummy; /* Auto negotiate the configuration. */ if( write_PHY( PHY_REG_BMCR, PHY_AUTO_NEG ) ) @@ -206,7 +275,7 @@ long x; for( x = 0; x < 10; x++ ) { - us = read_PHY( PHY_REG_BMSR, &us ); + us = read_PHY( PHY_REG_BMSR, &lDummy ); if( us & PHY_AUTO_NEG_COMPLETE ) { @@ -270,9 +339,9 @@ unsigned short usLinkStatus; } /*-----------------------------------------------------------*/ -portBASE_TYPE Init_EMAC( void ) +long Init_EMAC( void ) { -portBASE_TYPE xReturn = pdPASS; +long lReturn = pdPASS; volatile unsigned long regv, tout; unsigned long ulID1, ulID2; @@ -280,8 +349,8 @@ unsigned long ulID1, ulID2; prvSetupEMACHardware(); /* Check if connected to a DP83848C PHY. */ - ulID1 = read_PHY( PHY_REG_IDR1, &xReturn ); - ulID2 = read_PHY( PHY_REG_IDR2, &xReturn ); + ulID1 = read_PHY( PHY_REG_IDR1, &lReturn ); + ulID2 = read_PHY( PHY_REG_IDR2, &lReturn ); if( ( (ulID1 << 16UL ) | ( ulID2 & 0xFFF0UL ) ) == DP83848C_ID ) { /* Set the Ethernet MAC Address registers */ @@ -295,162 +364,169 @@ unsigned long ulID1, ulID2; /* Receive Broadcast and Perfect Match Packets */ MAC_RXFILTERCTRL = RFC_UCAST_EN | RFC_BCAST_EN | RFC_PERFECT_EN; - /* Create the semaphore used to wake the uIP task. */ - vSemaphoreCreateBinary( xEMACSemaphore ); - /* Setup the PHY. */ prvConfigurePHY(); } else { - xReturn = pdFAIL; + lReturn = pdFAIL; } /* Check the link status. */ - if( xReturn == pdPASS ) + if( lReturn == pdPASS ) { - xReturn = prvSetupLinkStatus(); + lReturn = prvSetupLinkStatus(); } - if( xReturn == pdPASS ) + if( lReturn == pdPASS ) { + /* Initialise uip_buf to ensure it points somewhere valid. */ + uip_buf = prvGetNextBuffer(); + /* Reset all interrupts */ - MAC_INTCLEAR = 0xFFFF; + MAC_INTCLEAR = ( INT_RX_OVERRUN | INT_RX_ERR | INT_RX_FIN | INT_RX_DONE | INT_TX_UNDERRUN | INT_TX_ERR | INT_TX_FIN | INT_TX_DONE | INT_SOFT_INT | INT_WAKEUP ); /* Enable receive and transmit mode of MAC Ethernet core */ MAC_COMMAND |= ( CR_RX_EN | CR_TX_EN ); MAC_MAC1 |= MAC1_REC_EN; } - return xReturn; + return lReturn; } /*-----------------------------------------------------------*/ -// reads a word in little-endian byte order from RX_BUFFER -unsigned short ReadFrame_EMAC( void ) +static void prvReturnBuffer( unsigned char *pucBuffer ) { - return( *rptr++ ); -} +unsigned long ul; -// copies bytes from frame port to MCU-memory -// NOTES: * an odd number of byte may only be transfered -// if the frame is read to the end! -// * MCU-memory MUST start at word-boundary -void CopyFromFrame_EMAC( void *Dest, unsigned short Size ) -{ - unsigned short *piDest; // Keil: Pointer added to correct expression - piDest = Dest; // Keil: Line added - while( Size > 1 ) + /* Mark a buffer as free for use. */ + for( ul = 0; ul < ETH_NUM_BUFFERS; ul++ ) { - *piDest++ = ReadFrame_EMAC(); - Size -= 2; + if( ETH_BUF( ul ) == ( unsigned long ) pucBuffer ) + { + ucBufferInUse[ ul ] = pdFALSE; + break; + } } - - if( Size ) - { // check for leftover byte... - *( unsigned char * ) piDest = ( char ) ReadFrame_EMAC(); // the LAN-Controller will return 0 - } // for the highbyte } +/*-----------------------------------------------------------*/ - -// Reads the length of the received ethernet frame and checks if the -// destination address is a broadcast message or not -// returns the frame length -unsigned short StartReadFrame( void ) +unsigned long ulGetEMACRxData( void ) { - unsigned short RxLen; - unsigned int idx; +unsigned long ulLen = 0; +long lIndex; - idx = MAC_RXCONSUMEINDEX; - RxLen = ( RX_STAT_INFO(idx) & RINFO_SIZE ) - 3; - rptr = ( unsigned short * ) RX_DESC_PACKET( idx ); - return( RxLen ); -} + if( MAC_RXPRODUCEINDEX != MAC_RXCONSUMEINDEX ) + { + /* Mark the current buffer as free as uip_buf is going to be set to + the buffer that contains the received data. */ + prvReturnBuffer( uip_buf ); -void EndReadFrame( void ) -{ - unsigned int idx; + ulLen = ( RX_STAT_INFO( MAC_RXCONSUMEINDEX ) & RINFO_SIZE ) - 3; + uip_buf = ( unsigned char * ) RX_DESC_PACKET( MAC_RXCONSUMEINDEX ); - /* DMA free packet. */ - idx = MAC_RXCONSUMEINDEX; + /* Allocate a new buffer to the descriptor. */ + RX_DESC_PACKET( MAC_RXCONSUMEINDEX ) = ( unsigned long ) prvGetNextBuffer(); - if( ++idx == NUM_RX_FRAG ) - { - idx = 0; + /* Move the consume index onto the next position, ensuring it wraps to + the beginning at the appropriate place. */ + lIndex = MAC_RXCONSUMEINDEX; + + lIndex++; + if( lIndex >= NUM_RX_FRAG ) + { + lIndex = 0; + } + + MAC_RXCONSUMEINDEX = lIndex; } - MAC_RXCONSUMEINDEX = idx; + return ulLen; } +/*-----------------------------------------------------------*/ -unsigned int uiGetEMACRxData( unsigned char *ucBuffer ) +void vSendEMACTxData( unsigned short usTxDataLen ) { - unsigned int uiLen = 0; +unsigned long ulAttempts = 0UL; - if( MAC_RXPRODUCEINDEX != MAC_RXCONSUMEINDEX ) + /* Check to see if the Tx descriptor is free, indicated by its buffer being + NULL. */ + while( TX_DESC_PACKET( emacTX_DESC_INDEX ) != NULL ) { - uiLen = StartReadFrame(); - CopyFromFrame_EMAC( ucBuffer, uiLen ); - EndReadFrame(); + /* Wait for the Tx descriptor to become available. */ + vTaskDelay( emacBUFFER_WAIT_DELAY ); + + ulAttempts++; + if( ulAttempts > emacBUFFER_WAIT_ATTEMPTS ) + { + /* Something has gone wrong as the Tx descriptor is still in use. + Clear it down manually, the data it was sending will probably be + lost. */ + prvReturnBuffer( ( unsigned char * ) TX_DESC_PACKET( emacTX_DESC_INDEX ) ); + break; + } } - return uiLen; + /* Setup the Tx descriptor for transmission. Remember the length of the + data being sent so the second descriptor can be used to send it again from + within the ISR. */ + usSendLen = usTxDataLen; + TX_DESC_PACKET( emacTX_DESC_INDEX ) = ( unsigned long ) uip_buf; + TX_DESC_CTRL( emacTX_DESC_INDEX ) = ( usTxDataLen | TCTRL_LAST | TCTRL_INT ); + MAC_TXPRODUCEINDEX = ( emacTX_DESC_INDEX + 1 ); + + /* uip_buf is being sent by the Tx descriptor. Allocate a new buffer. */ + uip_buf = prvGetNextBuffer(); } +/*-----------------------------------------------------------*/ -// requests space in EMAC memory for storing an outgoing frame -void RequestSend( void ) -{ - unsigned int idx; - idx = MAC_TXPRODUCEINDEX; - tptr = ( unsigned short * ) TX_DESC_PACKET( idx ); -} +static char c[ 256 ] = { 0 }; +static int i = 0; -// writes a word in little-endian byte order to TX_BUFFER -void WriteFrame_EMAC( unsigned short Data ) -{ - *tptr++ = Data; -} -// copies bytes from MCU-memory to frame port -// NOTES: * an odd number of byte may only be transfered -// if the frame is written to the end! -// * MCU-memory MUST start at word-boundary -void CopyToFrame_EMAC( void *Source, unsigned int Size ) +void vEMAC_ISR( void ) { - unsigned short *piSource; +unsigned long ulStatus; +portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE; - piSource = Source; - Size = ( Size + 1 ) & 0xFFFE; // round Size up to next even number - while( Size > 0 ) - { - WriteFrame_EMAC( *piSource++ ); - Size -= 2; - } -} + ulStatus = MAC_INTSTATUS; -void DoSend_EMAC( unsigned short FrameSize ) -{ - unsigned int idx; + /* Clear the interrupt. */ + MAC_INTCLEAR = ulStatus; - idx = MAC_TXPRODUCEINDEX; - TX_DESC_CTRL( idx ) = FrameSize | TCTRL_LAST; - if( ++idx == NUM_TX_FRAG ) + if( ulStatus & INT_RX_DONE ) { - idx = 0; + /* Ensure the uIP task is not blocked as data has arrived. */ + xSemaphoreGiveFromISR( xEMACSemaphore, &xHigherPriorityTaskWoken ); } - MAC_TXPRODUCEINDEX = idx; -} - -void vEMAC_ISR( void ) -{ - portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE; - - /* Clear the interrupt. */ - MAC_INTCLEAR = 0xffff; + if( ulStatus & INT_TX_DONE ) + { + if( usSendLen > 0 ) + { +if( i < 255 ) + c[ i++ ] = 1; + /* Send the data again, using the second descriptor. As there are + only two descriptors the index is set back to 0. */ + TX_DESC_PACKET( ( emacTX_DESC_INDEX + 1 ) ) = TX_DESC_PACKET( emacTX_DESC_INDEX ); + TX_DESC_CTRL( ( emacTX_DESC_INDEX + 1 ) ) = ( usSendLen | TCTRL_LAST | TCTRL_INT ); + MAC_TXPRODUCEINDEX = ( emacTX_DESC_INDEX ); + + /* This is the second Tx so set usSendLen to 0 to indicate that the + Tx descriptors will be free again. */ + usSendLen = 0UL; + } + else + { +if( i < 255 ) + c[ i++ ] = 1; - /* Ensure the uIP task is not blocked as data has arrived. */ - xSemaphoreGiveFromISR( xEMACSemaphore, &xHigherPriorityTaskWoken ); + /* The Tx buffer is no longer required. */ + prvReturnBuffer( ( unsigned char * ) TX_DESC_PACKET( emacTX_DESC_INDEX ) ); + TX_DESC_PACKET( emacTX_DESC_INDEX ) = NULL; + } + } portEND_SWITCHING_ISR( xHigherPriorityTaskWoken ); } diff --git a/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/uIP_Task.c b/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/uIP_Task.c index a88e4ee03..4d8f9cb20 100644 --- a/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/uIP_Task.c +++ b/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/uIP_Task.c @@ -66,7 +66,8 @@ /* Demo includes. */ #include "EthDev_LPC17xx.h" -#include "LED.h" +#include "EthDev.h" +#include "ParTest.h" #include "LPC17xx.h" #include "core_cm3.h" @@ -83,11 +84,6 @@ /*-----------------------------------------------------------*/ -/* - * Send the uIP buffer to the MAC. - */ -static void prvENET_Send(void); - /* * Setup the MAC address in the MAC itself, and in the uIP stack. */ @@ -102,7 +98,7 @@ clock_time_t clock_time( void ); /*-----------------------------------------------------------*/ /* The semaphore used by the ISR to wake the uIP task. */ -extern xSemaphoreHandle xEMACSemaphore; +xSemaphoreHandle xEMACSemaphore = NULL; /*-----------------------------------------------------------*/ @@ -127,9 +123,6 @@ extern void ( vEMAC_ISR_Wrapper )( void ); ( void ) pvParameters; - /* Create the semaphore used by the ISR to wake this task. */ - vSemaphoreCreateBinary( xEMACSemaphore ); - /* Initialise the uIP stack. */ timer_set( &periodic_timer, configTICK_RATE_HZ / 2 ); timer_set( &arp_timer, configTICK_RATE_HZ * 10 ); @@ -140,6 +133,9 @@ extern void ( vEMAC_ISR_Wrapper )( void ); uip_setnetmask( xIPAddr ); httpd_init(); + /* Create the semaphore used to wake the uIP task. */ + vSemaphoreCreateBinary( xEMACSemaphore ); + /* Initialise the MAC. */ while( Init_EMAC() != pdPASS ) { @@ -148,7 +144,7 @@ extern void ( vEMAC_ISR_Wrapper )( void ); portENTER_CRITICAL(); { - ETH_INTENABLE = INT_RX_DONE; + ETH_INTENABLE = ( INT_RX_DONE | INT_TX_DONE ); /* set the interrupt priority */ NVIC_SetPriority( ENET_IRQn, configMAX_SYSCALL_INTERRUPT_PRIORITY ); /* enable the interrupt */ @@ -161,9 +157,9 @@ extern void ( vEMAC_ISR_Wrapper )( void ); for( ;; ) { /* Is there received data ready to be processed? */ - uip_len = uiGetEMACRxData( uip_buf ); + uip_len = ulGetEMACRxData(); - if( uip_len > 0 ) + if( ( uip_len > 0 ) && ( uip_buf != NULL ) ) { /* Standard uIP loop taken from the uIP manual. */ if( xHeader->type == htons( UIP_ETHTYPE_IP ) ) @@ -177,7 +173,7 @@ extern void ( vEMAC_ISR_Wrapper )( void ); if( uip_len > 0 ) { uip_arp_out(); - prvENET_Send(); + vSendEMACTxData( uip_len ); } } else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) ) @@ -189,13 +185,13 @@ extern void ( vEMAC_ISR_Wrapper )( void ); uip_len is set to a value > 0. */ if( uip_len > 0 ) { - prvENET_Send(); + vSendEMACTxData( uip_len ); } } } else { - if( timer_expired( &periodic_timer ) ) + if( timer_expired( &periodic_timer ) && ( uip_buf != NULL ) ) { timer_reset( &periodic_timer ); for( i = 0; i < UIP_CONNS; i++ ) @@ -208,7 +204,7 @@ extern void ( vEMAC_ISR_Wrapper )( void ); if( uip_len > 0 ) { uip_arp_out(); - prvENET_Send(); + vSendEMACTxData( uip_len ); } } @@ -232,32 +228,6 @@ extern void ( vEMAC_ISR_Wrapper )( void ); } /*-----------------------------------------------------------*/ -static void prvENET_Send(void) -{ - RequestSend(); - - /* Copy the header into the Tx buffer. */ - CopyToFrame_EMAC( uip_buf, uipTOTAL_FRAME_HEADER_SIZE ); - if( uip_len > uipTOTAL_FRAME_HEADER_SIZE ) - { - CopyToFrame_EMAC( uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) ); - } - - DoSend_EMAC( uip_len ); - - RequestSend(); - - /* Copy the header into the Tx buffer. */ - CopyToFrame_EMAC( uip_buf, uipTOTAL_FRAME_HEADER_SIZE ); - if( uip_len > uipTOTAL_FRAME_HEADER_SIZE ) - { - CopyToFrame_EMAC( uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) ); - } - - DoSend_EMAC( uip_len ); -} -/*-----------------------------------------------------------*/ - static void prvSetMACAddress( void ) { struct uip_eth_addr xAddr; diff --git a/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/uip-conf.h b/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/uip-conf.h index 3e6f7f381..b52b23fed 100644 --- a/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/uip-conf.h +++ b/Demo/CORTEX_LPC1768_GCC_Rowley/webserver/uip-conf.h @@ -57,6 +57,8 @@ #include +#define UIP_CONF_EXTERNAL_BUFFER + /** * 8 bit datatype *