Diff: EMAC/uIP/lpc17xx_port/emac.c

Revision:

0:bf7b9fba3924

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EMAC/uIP/lpc17xx_port/emac.c	Sun Mar 20 05:38:56 2011 +0000
@@ -0,0 +1,168 @@
+#include "emac.h"
+#include "lpc17xx_emac.h"
+#include "lpc17xx_pinsel.h"
+#include <string.h>
+#include <stdio.h>
+
+
+/* For debugging... */
+#include "debug_frmwrk.h"
+#include <stdio.h>
+
+/* Example group ----------------------------------------------------------- */
+/** @defgroup EMAC_uIP	uIP
+ * @ingroup EMAC_Examples
+ * @{
+ */
+
+#define DB	_DBG((uint8_t *)db)
+char db[64];
+
+/* Init the LPC17xx ethernet */
+BOOL_8 tapdev_init(void)
+{
+	/* EMAC configuration type */
+	EMAC_CFG_Type Emac_Config;
+	/* pin configuration */
+	PINSEL_CFG_Type PinCfg;
+	/* EMAC address */
+	uint8_t EMACAddr[] = {EMAC_ADDR0, EMAC_ADDR1, EMAC_ADDR2, \
+						EMAC_ADDR3, EMAC_ADDR4, EMAC_ADDR5};
+
+#if AUTO_NEGOTIATION_ENA != 0
+	Emac_Config.Mode = EMAC_MODE_AUTO;
+#else
+	#if (FIX_SPEED == SPEED_100)
+		#if (FIX_DUPLEX == FULL_DUPLEX)
+			Emac_Config.Mode = EMAC_MODE_100M_FULL;
+		#elif (FIX_DUPLEX == HALF_DUPLEX)
+			Emac_Config.Mode = EMAC_MODE_100M_HALF;
+		#else
+			#error Does not support this duplex option
+		#endif
+	#elif (FIX_SPEED == SPEED_10)
+		#if (FIX_DUPLEX == FULL_DUPLEX)
+				Emac_Config.Mode = EMAC_MODE_10M_FULL;
+		#elif (FIX_DUPLEX == HALF_DUPLEX)
+				Emac_Config.Mode = EMAC_MODE_10M_HALF;
+		#else
+			#error Does not support this duplex option
+		#endif
+	#else
+		#error Does not support this speed option
+	#endif
+#endif
+
+	/*
+	 * Enable P1 Ethernet Pins:
+	 * P1.0 - ENET_TXD0
+	 * P1.1 - ENET_TXD1
+	 * P1.4 - ENET_TX_EN
+	 * P1.8 - ENET_CRS
+	 * P1.9 - ENET_RXD0
+	 * P1.10 - ENET_RXD1
+	 * P1.14 - ENET_RX_ER
+	 * P1.15 - ENET_REF_CLK
+	 * P1.16 - ENET_MDC
+	 * P1.17 - ENET_MDIO
+	 */
+	PinCfg.Funcnum = 1;
+	PinCfg.OpenDrain = 0;
+	PinCfg.Pinmode = 0;
+	PinCfg.Portnum = 1;
+
+	PinCfg.Pinnum = 0;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 1;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 4;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 8;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 9;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 10;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 14;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 15;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 16;
+	PINSEL_ConfigPin(&PinCfg);
+	PinCfg.Pinnum = 17;
+	PINSEL_ConfigPin(&PinCfg);
+
+	_DBG_("Init EMAC module");
+	sprintf(db,"MAC addr: %X-%X-%X-%X-%X-%X \n\r", \
+			 EMACAddr[0],  EMACAddr[1],  EMACAddr[2], \
+			  EMACAddr[3],  EMACAddr[4],  EMACAddr[5]);
+	DB;
+
+	Emac_Config.Mode = EMAC_MODE_AUTO;
+	Emac_Config.pbEMAC_Addr = EMACAddr;
+	// Initialize EMAC module with given parameter
+	if (EMAC_Init(&Emac_Config) == ERROR){
+		return (FALSE);
+	}
+
+	_DBG_("Init EMAC complete");
+
+	return (TRUE);
+}
+
+/* receive an Ethernet frame from MAC/DMA controller */
+UNS_32 tapdev_read(void * pPacket)
+{
+	UNS_32 Size = EMAC_MAX_PACKET_SIZE;
+	UNS_32 in_size;
+	EMAC_PACKETBUF_Type RxPack;
+
+	// Check Receive status
+	if (EMAC_CheckReceiveIndex() == FALSE){
+		return (0);
+	}
+
+	// Get size of receive data
+	in_size = EMAC_GetReceiveDataSize() + 1;
+
+	Size = MIN(Size,in_size);
+
+	// Setup Rx packet
+	RxPack.pbDataBuf = (uint32_t *)pPacket;
+	RxPack.ulDataLen = Size;
+	EMAC_ReadPacketBuffer(&RxPack);
+
+	// update receive status
+	EMAC_UpdateRxConsumeIndex();
+	return(Size);
+}
+
+/* transmit an Ethernet frame to MAC/DMA controller */
+BOOL_8 tapdev_send(void *pPacket, UNS_32 size)
+{
+	EMAC_PACKETBUF_Type TxPack;
+
+	// Check size
+	if(size == 0){
+		return(TRUE);
+	}
+
+	// check Tx Slot is available
+	if (EMAC_CheckTransmitIndex() == FALSE){
+		return (FALSE);
+	}
+
+	size = MIN(size,EMAC_MAX_PACKET_SIZE);
+
+	// Setup Tx Packet buffer
+	TxPack.ulDataLen = size;
+	TxPack.pbDataBuf = (uint32_t *)pPacket;
+	EMAC_WritePacketBuffer(&TxPack);
+	EMAC_UpdateTxProduceIndex();
+
+	return(TRUE);
+}
+
+/*
+ * @}
+ */