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查看: 2165|回复: 4
OMAPL138以太网通讯无法ping通，烦烦烦，求大神帮忙
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一粒金砂, 积分 20, 距离下一级还需 180 积分
我用的是OMAPL138的芯片，网卡是KSZ8041FTL，用的平台是CCS3.3，调试dsp，并且移植了Ucos操作系统，我把板子的网口和主机的网口用网线连起来，然后在主机的cmd中ping板子的IP地址，到目前为止就出现2次ping通，而且ping通了一下就超时了，一次丢包率是50%，另一次是75%。到目前为止我还找不到啥问题，可否请知道的人士请帮忙啊，可以直接QQ联系.
在线时间84 小时
芯币505 枚
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CCS下的网络测试，基本上都是回环测试，自发自收。
在U-Boot下可以通过板卡ping通主机，可能无法从主机ping通板卡。
进入操作系统后(如Linux)，板卡和主机可以互相ping通。
关键我现在没有在linux下用，只在平常的PC机上用CCS，而且程序里面移植了Ucos代码，现在不知道从何下手了，网络部分初始化都是按照MDIO&EMAC文档上面操作的，其他的话，也不知道从何调试开始。&
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回复 沙发 kooking 的帖子
关键我现在没有在linux下用，只在平常的PC机上用CCS，而且程序里面移植了Ucos代码，现在不知道从何下手了，网络部分初始化都是按照MDIO&EMAC文档上面操作的，其他的话，也不知道从何调试开始。
在线时间84 小时
芯币505 枚
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从理论上说，CCS下回环测试如果通过，网络部分的硬件应该是没什么问题的。
这有一个UCOS个Ping的实现，希望有帮助
代码其中之一：
//-----------------------------------------------------------------------------
evmomapl138_emac.c
// \\brief
implementation of the emac/mdio driver for the OMAP&
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代码其中之一：& & & & & & & & & & & & & & & & & & & & & & & & & & & & //-----------------------------------------------------------------------------
// \file& & evmomapl138_emac.c
// \brief& &implementation of the emac/mdio driver for the OMAP-L138 EVM.
//
//-----------------------------------------------------------------------------
#include "stdio.h"
#include "string.h"
#include "os_cpu_isr.h"
#include "includes.h"
#include "inc/evmomapl138_emac.h"
#include "inc/types.h"
#include "evmomapl138.h"
#include "evmomapl138_timer.h"
#include "inc/ethernet_smsc.h"
#include "inc/evmomapl138_gpio.h"
#include "inc/evmomapl138_i2c_gpio.h"
#include "inc/evmomapl138_cdce913.h"
#include "evmomapl138_aintc.h"& &// add_ISR需要
#include "netif/etharp.h"
#include "Emac_des.h"
#include "ethernetif.h"
#ifndef USE_HDTIME_DLY
#define USTIMER_delay(x)& & & & & & & &
#endif //USE_HDTIME_DLY
#define MAX_POLLING_NUM& & & & & & & & (0x0FFFFFFF)
//-----------------------------------------------------------------------------
// Private Defines and Macros
//-----------------------------------------------------------------------------
// INTCONTROL >> INTPRESCALE , number of EMAC clk period within a 4 us time window
#define NUM_INTPRESCALE& & (4*SYSCLOCK4_HZ/1000000)&&//4/(1000000/SYSCLOCK4_HZ) , 4us
// mdio clock divide down value.
#define MDIO_CLK_FREQ_HZ& &(2000000)&&//2M HZ
#define MDIO_CLK_DIVISOR& &((SYSCLOCK4_HZ / MDIO_CLK_FREQ_HZ) - 1)
// rx / tx desriptor memory offsets.
#define RX_DESC_OFFSET& &&&(0)
#define TX_DESC_OFFSET& &&&(0x1000)
//MII pinmux
#define PINMUX_MII_REG_0& && && &(2)
#define PINMUX_MII_MASK_0& && &&&(0xFFFFFFF0)
#define PINMUX_MII_VAL_0& && && &(0x)
#define PINMUX_MII_REG_1& && && &(3)
#define PINMUX_MII_MASK_1& && &&&(0xFFFFFFFF)
#define PINMUX_MII_VAL_1& && && &(0x)
//RMII pinmux
#define PINMUX_RMII_REG_0& && &&&(14)
#define PINMUX_RMII_MASK_0& && & (0xFFFFFF00)
#define PINMUX_RMII_VAL_0& && &&&(0x)
#define PINMUX_RMII_REG_1& && &&&(15)
#define PINMUX_RMII_MASK_1& && & (0x000000FF)
#define PINMUX_RMII_VAL_1& && &&&(0x)
//MDIO pinmux
#define PINMUX_MDIO_REG& && && & (4)
#define PINMUX_MDIO_MASK& && && &(0x000000FF)
#define PINMUX_MDIO_VAL& && && & (0x)
//GPIO pinmux
#define PINMUX_MII_MDIO_EN_REG& & & &&&(6)
#define PINMUX_MII_MDIO_EN_MASK& & & &&&(0x)
#define PINMUX_MII_MDIO_EN_VAL& & & &&&(0x)
//
#define EMAC_RMII_SPEED_100& & & & & & & &&&(0x)
//-----------------------------------------------------------------------------
// Private Static Variables
//-----------------------------------------------------------------------------
static uint8_t g_active_phy_id = 0x0; //我们选用的L138是phy_id是为0的
//-----------------------------------------------------------------------------
// Private Function Prototypes
//-----------------------------------------------------------------------------
static uint32_t initMdioPhy(void);
static uint8_t isLinkActive(uint8_t in_phy);
static uint16_t phyRegRead(uint8_t in_phy, uint8_t in_reg);
static void phyRegWrite(uint8_t in_phy, uint8_t in_reg, uint16_t in_data);
//----------------------------------------------------------------------------
//Public value definitions
//----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// Public Function Definitions
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// \brief& &initialize the EMAC and MDIO for use.
//
// \param& &none.
//
// \return&&uint32_t
//& & ERR_NO_ERROR - everything is ok...emac ready to use.
//& & ERR_INIT_FAIL - something happened during initialization.
//-----------------------------------------------------------------------------
uint32_t Lowlevel_Emac_Init(void)
{
& &uint32_t rtn = 0;
& &uint32_
&&SYS_ARCH_DECL_PROTECT(sr);
&&SYS_ARCH_PROTECT(sr);
& &// reset emac module.
& &EMAC->SOFTRESET = 1;
& & & & while (EMAC->SOFTRESET != 0) {;}
& & & & //init emac control module
& & & & //----------------------------------------
& & & & // AddISR() -- configuration of the interrupt to the CPU.
& & & & //AINTC --Number34 core0 Receive Interrupt
& & & & AddISR(34,L138Ethif_RxHandler,(void *)0);
& & & & aintcRegs->SICR = 34; //clear index status
& & & & aintcRegs->CMR8 = 0x;//(Sets channel map, system interrupt --> host channel interrupt )
& & aintcRegs->EISR = 34; //Enable Index Set Register
& & & & aintcRegs->SECR2 = 0x; //34 status clear&&
& & & & //configure Tx Interrupt Handler
& & & & AddISR(35,L138Ethif_TxHandler,(void *)0);
& & & & aintcRegs->SICR = 35; //clear index status
& & & & aintcRegs->CMR8 = 0x; //SETS CHannel map
& & & & aintcRegs->EISR = 35; //Enable Index Set Register
& & & & aintcRegs->SECR2 = 0x; //clear 35 status register ...
& & & & // configure INTCONTORL , CnRXIMAX, CnTXIMAX,
& & & & EMAC_CTRL->INTCTL = (NUM_INTPRESCALE| 0x);
& & & & EMAC_CTRL->C0RXIMAX = 2;
& & & & EMAC_CTRL->C0TXIMAX = 2;
& & & & //--& init emac module.
& &//------------------
& &
& & & & // make sure emac control interrupts are disabled.
& &EMAC_CTRL->C0RXTHRESHEN = 0;
& &EMAC_CTRL->C1RXTHRESHEN = 0;
& &EMAC_CTRL->C2RXTHRESHEN = 0;
& &EMAC_CTRL->C0RXEN = 0;
& &EMAC_CTRL->C1RXEN = 0;
& &EMAC_CTRL->C2RXEN = 0;
& &EMAC_CTRL->C0TXEN = 0;
& &EMAC_CTRL->C1TXEN = 0;
& &EMAC_CTRL->C2TXEN = 0;
& &EMAC_CTRL->C0MISCEN = 0;
& &EMAC_CTRL->C1MISCEN = 0;
& &EMAC_CTRL->C2MISCEN = 0;
& &EVMOMAPL138_pinmuxConfig(PINMUX_MDIO_REG, PINMUX_MDIO_MASK, PINMUX_MDIO_VAL); & & & & & & & & & & & & & & & & & & & && &//MDIO shared by both RMII and MII
//& &EVMOMAPL138_pinmuxConfig(PINMUX_MII_MDIO_EN_REG, PINMUX_MII_MDIO_EN_MASK, PINMUX_MII_MDIO_EN_VAL); //pinmux to select gpio bank2 pin6
& & & & & &
& && & & & //PINMUXING
& & EVMOMAPL138_pinmuxConfig(PINMUX_MII_REG_0, PINMUX_MII_MASK_0, PINMUX_MII_VAL_0);
& & EVMOMAPL138_pinmuxConfig(PINMUX_MII_REG_1, PINMUX_MII_MASK_1, PINMUX_MII_VAL_1);
& && &
& & SYSCONFIG->KICKR[0] = KICK0R_UNLOCK;
& & SYSCONFIG->KICKR[1] = KICK1R_UNLOCK;
& & CLRBIT(SYSCONFIG->CFGCHIP[3], 0x); //select mii mode !
& & & & //as software reset consideration, do this here
& &EVMOMAPL138_lpscTransition(PSC1, DOMAIN0, LPSC_EMAC, PSC_ENABLE);
& &// clear MAC control register, receive control register, transmiter control register
& & & & EMAC->MACCONTROL = 0;
& & & & EMAC->RXCONTROL = 0;
& & & & EMAC->TXCONTROL = 0;
&&// init header descriptor pointer regs to 0.
& &&&for (i = 0; i < 8; i++)
& &&&{
& && & EMAC->TXHDP[i] = 0;
& && & EMAC->RXHDP[i] = 0;
& &&&}
& &// clear all statistic register
#ifndef BOOT
& &memset((uint8_t *)NET_STAT_REG_BASE, 0, NET_STAT_REG_NUM_BYTES);
#endif
& &// setup local MAC address, only channel 0 is valid.
& &// program all 8, only need to set MACADDRHI for index = 0.
& &// use duplicate address for all unused channels.
& &// TODO: read MAC address from SPI flash.
& &//写的顺序是MACINDEX, ADDRHI, ADDRLO,由于高40bits是共享的
& &//只用了通道0，EMAC->MACADDRLO = 0X |VALID|MATCHFILT
& &for (i = 1; i < 8; i++)
& &{
& && &EMAC->MACINDEX =
& & & && &EMAC->MACADDRHI = 0x; //index -> hi -> lo
& && &EMAC->MACADDRLO = 0x;& & & && &
& &}
& &EMAC->MACINDEX = 0;
& &EMAC->MACADDRHI = 0x;
& &// channel bit = 0, match mac address = 1
& &EMAC->MACADDRLO = 0x | MACADDRLO_VALID | MACADDRLO_MATCHFILT;
& & // for use tx DMA descriptor configuration:
& & EMAC->MACSRCADDRHI = 0x;
& & & & EMAC->MACSRCADDRLO = 0x;
& &// initialize receive channel free buffer count regs, if buffer flow
& &// control is to be enabled.
& &// NOTE: this example does not use buffer flow control.
& &// enable unicast chan 0 only.
& &EMAC->RXUNICASTSET = 0x01;
& &
& &// no multicast addresses, clear MAC address hash registers.
& &EMAC->MACHASH1 = 0;
& &EMAC->MACHASH2 = 0;
& &// 只允许broadcast的ARP数据包，和发给自己的包，以太网的其他数据不放入Memmory里去.
& &//但是我单独设置RxBroadEn却没有作用。
& &EMAC->RXMBPENABLE = 0;
& &SETBIT(EMAC->RXMBPENABLE, (RXBROADEN|RXCAFEN));
// EMAC->RXMBPENABLE = 0x01E02020;& & & & & & & & //enable reception of almost all frames inc error
& &
& &//11. configure MACCONTROL (Don't set GMIIEN Bit)
& &SETBIT(EMAC->MACCONTROL, (RMIISPEED|FULLDUPLEX|TXPACE)); //RMII_SPEED,为了适应RMII
&&
& & & & // 12. Clear all unused channel interrupt bits by writing the receive interrupt mask clear register
& & & & //(RXINTMASKCLEAR) and the transmit interrupt mask clear register (TXINTMASKCLEAR).
& & & & EMAC->RXINTMASKCLEAR |= 0xFE; //RX channel 0的中断不屏蔽
& & & & EMAC->TXINTMASKCLEAR |= 0xFE; //TX CH0 中断屏蔽
& & & & //13. Modify RXINTMASKSET, TXINTMASKSET,MACINTMASKSET
& & & & EMAC->RXINTMASKSET |= 0x01;
& & & & EMAC->TXINTMASKSET |= 0x01;
& & & & EMAC->MACINTMASKCLR = 0x03; //disabled host mask , stat interrupt
& &
& &//14 init receive buffer offset and max length.
& &EMAC->RXBUFFEROFFSET = 0;
& &EMAC->RXMAXLEN = MAX_PACKET_SIZE;
& &
& &// initialize receive/transmit descriptor list queues.
& &Emac_des_init(); //modify 04/18
& &//16 enable receive / transmit DMA controllers...set GMIIEN.
& &EMAC->RXCONTROL = 1;
& &EMAC->TXCONTROL = 1;
& &SETBIT(EMAC->MACCONTROL, GMIIEN );
#if 1& &//文档说未经测试，删除貌似没效果啊，先不管它
& &SETBIT(EMAC->EMCONTROL, SOFT);
#endif
& &// -->& init mdio / phy, 再加上MAC中断
& &//-----------------
& &rtn = initMdioPhy();
//& &if (rtn != ERR_NO_ERROR)
//& && &return (rtn);
& & SYS_ARCH_UNPROTECT(sr);
& &//17>Enable the device interrupt in EMAC control module registers CnRXTHRESHEN, CnRXEN, CnTXEN,
& &//and CnMISCEN. -- LP Add
& & & & EMAC_CTRL->C0RXEN = 1; //C0RXPULSE Is Enabled for RX channel 0& &
& & & & EMAC_CTRL->C0TXEN = 1; //C0TXPULSE IS enabled for tx channel 0
& & & & return (rtn);
}
//-----------------------------------------------------------------------------
// \brief& &power on the phy.
//
// \param& &none.
//
// \return&&uint32_t
//& & ERR_NO_ERROR - everything is ok...phy is on.
//& & ERR_FAIL - something happened and could not power on.
//-----------------------------------------------------------------------------
uint32_t EMAC_phyPowerOn(void)
{
& &uint32_
& &uint16_t ctrl_
& &ctrl_reg = phyRegRead(g_active_phy_id, SMSC_REG_BASIC_CTRL);
& &if (!CHKBIT(ctrl_reg, BASIC_CTRL_POWER_DOWN))
& &{
& && &// phy is already on...nothing left to do.
& && &#if DEBUG
& && &printf("phy powered, basic ctrl reg: %04x\n", ctrl_reg);
& && &#endif
& && &rtn = ERR_NO_ERROR;
& &}
& &else
& &{
& && &// clear power down bit and write back to phy.
& && &CLRBIT(ctrl_reg, BASIC_CTRL_POWER_DOWN);
& && &phyRegWrite(g_active_phy_id, SMSC_REG_BASIC_CTRL, ctrl_reg);
& && &// short delay, then read the reg back to verify loopback is enabled.
& && &USTIMER_delay(500);
& && &ctrl_reg = phyRegRead(g_active_phy_id, SMSC_REG_BASIC_CTRL);
& && &if (!CHKBIT(ctrl_reg, BASIC_CTRL_POWER_DOWN))
& && &{
& && && &// phy is powered...return success.
& && && &#if DEBUG
& && && &printf("phy powered, basic ctrl reg: %04x\n", ctrl_reg);
& && && &#endif
& && && &rtn = ERR_NO_ERROR;
& && &}
& && &else
& && &{
& && && &// power down bit did not clear...return error.
& && && &#if DEBUG
& && && &printf("power down did not clear: %04x\n", ctrl_reg);
& && && &#endif
& && && &rtn = ERR_FAIL;
& && &}
& &}
& &return (rtn);
}
//-----------------------------------------------------------------------------
// \brief& &power down the phy.
//
// \param& &none.
//
// \return&&uint32_t
//& & ERR_NO_ERROR - everything is ok...phy is powered down.
//& & ERR_FAIL - something happened and could not power down.
//-----------------------------------------------------------------------------
uint32_t EMAC_phyPowerDown(void)
{
& &uint32_
& &uint16_t ctrl_
& &ctrl_reg = phyRegRead(g_active_phy_id, SMSC_REG_BASIC_CTRL);
& &if(CHKBIT(ctrl_reg, BASIC_CTRL_ISOLATE) && CHKBIT(ctrl_reg, BASIC_CTRL_POWER_DOWN))
& &{
& && &// phy is already powered down...nothing left to do.
& && &#if DEBUG
& && &printf("phy powered down, basic ctrl reg: %04x\n", ctrl_reg);
& && &#endif
& && &rtn = ERR_NO_ERROR;
& &}
& &else
& &{
& && &// set power down bit and write back to phy.
& && &SETBIT(ctrl_reg, BASIC_CTRL_ISOLATE | BASIC_CTRL_POWER_DOWN);
& && &phyRegWrite(g_active_phy_id, SMSC_REG_BASIC_CTRL, ctrl_reg);
& && &// short delay, then read the reg back to verify loopback is disabled.
& && &USTIMER_delay(500);
& && &ctrl_reg = phyRegRead(g_active_phy_id, SMSC_REG_BASIC_CTRL);
& && &if(CHKBIT(ctrl_reg, BASIC_CTRL_ISOLATE) && CHKBIT(ctrl_reg, BASIC_CTRL_POWER_DOWN))
& && &{
& && && &// phy is powered down...return success.
& && && &#if DEBUG
& && && &printf("phy powered down, basic ctrl reg: %04x\n", ctrl_reg);
& && && &#endif
& && && &rtn = ERR_NO_ERROR;
& && &}
& && &else
& && &{
& && && &// power down bit did not set...return error.
& && && &#if DEBUG
& && && &printf("power down bit did not set: %04x\n", ctrl_reg);
& && && &#endif
& && && &rtn = ERR_FAIL;
& && &}
& &}
& &return (rtn);
}
//-----------------------------------------------------------------------------
// \brief& &put the phy into loopback mode.
//
// \param& &none.
//
// \return&&uint32_t
//& & ERR_NO_ERROR - everything is ok...phy is in loopback mode.
//& & ERR_FAIL - something happened and could not enter loopback.
//-----------------------------------------------------------------------------
uint32_t EMAC_phyEnterLoopback(void)
{
& &uint32_
& &uint16_t ctrl_
& &ctrl_reg = phyRegRead(g_active_phy_id, SMSC_REG_BASIC_CTRL);
& &rtn = ERR_NO_ERROR;
& &if (ctrl_reg & BASIC_CTRL_LOOPBACK)
& &{
& && &// loopback is already enabled...nothing left to do.
& && &#if DEBUG
& && &printf("loopback enabled, basic ctrl reg: %04x\n", ctrl_reg);
& && &#endif
& && &rtn = ERR_NO_ERROR;
& &}
& &else
& &{
& && &// set loopback bit and write back to phy.
& && &ctrl_reg |= BASIC_CTRL_LOOPBACK;
& && &phyRegWrite(g_active_phy_id, SMSC_REG_BASIC_CTRL, ctrl_reg);
& && &// short delay, then read the reg back to verify loopback is enabled.
& && &USTIMER_delay(500);
& && &ctrl_reg = phyRegRead(g_active_phy_id, SMSC_REG_BASIC_CTRL);
& && &if (ctrl_reg & BASIC_CTRL_LOOPBACK)
& && &{
& && && &// loopback is enabled...return success.
& && && &#if DEBUG
& && && &printf("loopback enabled , basic ctrl reg: %04x\n", ctrl_reg);
& && && &#endif
& && && &rtn = ERR_NO_ERROR;
& && &}
& && &else
& && &{
& && && &// loopback bit did not get set...return error.
& && && &#if DEBUG
& && && &printf("loopback did not set: %04x\n", ctrl_reg);
& && && &#endif
& && && &rtn = ERR_FAIL;
& && &}
& &}
& &return (rtn);
}
//-----------------------------------------------------------------------------
// \brief& &remove the phy from loopback mode.
//
// \param& &none.
//
// \return&&uint32_t
//& & ERR_NO_ERROR - everything is ok...phy is out of loopback mode.
//& & ERR_FAIL - something happened and could not disable loopback.
//-----------------------------------------------------------------------------
uint32_t EMAC_phyExitLoopback(void)
{
& &uint32_
& &uint16_t ctrl_
& &ctrl_reg = phyRegRead(g_active_phy_id, SMSC_REG_BASIC_CTRL);
& &if (!(ctrl_reg & BASIC_CTRL_LOOPBACK))
& &{
& && &// loopback is already disabled...nothing left to do.
& && &#if DEBUG
& && &printf("loopback disabled, basic ctrl reg: %04x\n", ctrl_reg);
& && &#endif
& && &rtn = ERR_NO_ERROR;
& &}
& &else
& &{
& && &// clear loopback bit and write back to phy.
& && &ctrl_reg &= ~BASIC_CTRL_LOOPBACK;
& && &phyRegWrite(g_active_phy_id, SMSC_REG_BASIC_CTRL, ctrl_reg);
& && &// short delay, then read the reg back to verify loopback is disabled.
& && &USTIMER_delay(5);
& && &ctrl_reg = phyRegRead(g_active_phy_id, SMSC_REG_BASIC_CTRL);
& && &if (!(ctrl_reg & BASIC_CTRL_LOOPBACK))
& && &{
& && && &// loopback is disabled...return success.
& && && &#if DEBUG
& && && &printf("loopback disabled , basic ctrl reg: %04x\n", ctrl_reg);
& && && &#endif
& && && &rtn = ERR_NO_ERROR;
& && &}
& && &else
& && &{
& && && &// loopback bit did not clear...return error.
& && && &#if DEBUG
& && && &printf("loopback did not clear: %04x\n", ctrl_reg);
& && && &#endif
& && && &rtn = ERR_FAIL;
& && &}
& &}
& &return (rtn);
}
//-----------------------------------------------------------------------------
// Private Function Definitions
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// initialize the mdio module and identify the active phy.
//-----------------------------------------------------------------------------
uint32_t initMdioPhy(void)
{
& &uint32_t i = 0;
& &uint16_t phy_
& &// init the mdio regs.
& &MDIO->CONTROL = MDIO_CTRL_ENABLE |
& && && && && && && &MDIO_CTRL_FAULT |
& && && && && && && &MDIO_CTRL_FAULTENB |
& && && && && && && &MDIO_CLK_DIVISOR;
& &while (CHKBIT(MDIO->CONTROL, MDIO_CTRL_IDLE)) {;}
#if DEBUG_MDIO_LINK
& &// look for an active phy...takes up to 50 us for each phy to be checked.
& &//以下只是调试时有用，真正烧入程序中去时，是不行的，因为没插上网线，AddISR还要上的。
& &for (i = 0; i < MAX_POLLING_NUM; i++)
& &{
& && &if (MDIO->ALIVE)
& && &{
& && && &// at least one phy has acknowledged us...break the loop.
& && && &
& && &}
& && &USTIMER_delay(50);&&// polling , 采用polling方式，LP- delete
& &}
& &while(!(MDIO->ALIVE)); //还是没有找到PHY，它就在此处挂住
#else
& & & & while(!(MDIO->ALIVE)) //没有网线连接
& & & & {
& & & & & & & & i++;
& & & & & & & & if(i >= MAX_POLLING_NUM)
& & & & & & & & {
& & & & & & & & & & & &
& & & & & & & & }
& & & & }//只是为了延时让phy与PC自适应的时涞却??
#endif
//
& &g_active_phy_id = 0; //确实是个发生错误，现在可以读到PHY。
& &MDIO->USERPHYSEL0 = 0;& & & & //USERPHYSEL0 = 0,表示PHY0被选中监控。
#if DEBUG_MDIO_LINK
& &phy_reg = phyRegRead(g_active_phy_id,0x02); //phy-id,查看phyRegRead是否正确;
& &if(phy_reg != 0x0022) //不等则芯片焊错
& &{
& & & & while(1);
& &}
#endif
& &return (ERR_NO_ERROR);
}
//-----------------------------------------------------------------------------
// returns if the link is currently active...1 -> active, 0 -> not active.
//-----------------------------------------------------------------------------
uint8_t isLinkActive(uint8_t in_phy)
{
& &uint16_
& &status = phyRegRead(in_phy, SMSC_REG_BASIC_STAT);
& &
& &if (CHKBIT(status, BASIC_STAT_LINK_STAT))
& && &return (1);
& &else
& && &return (0);
}
//-----------------------------------------------------------------------------
// read a phy register using the MDIO.
//-----------------------------------------------------------------------------
uint16_t phyRegRead(uint8_t in_phy, uint8_t in_reg)
{
& &// make sure mdio is not busy.
& &while (CHKBIT(MDIO->USERACCESS0, USERACC_GO)) {}
& &MDIO->USERACCESS0 = USERACC_GO |
& && && && && && && && &(in_reg << USERACC_SHIFT_REG) |
& && && && && && && && &(in_phy << USERACC_SHIFT_PHY);
& &while (CHKBIT(MDIO->USERACCESS0, USERACC_GO)) {}
& &return ((uint16_t)(MDIO->USERACCESS0 & USERACC_MASK_DATA));
}
//-----------------------------------------------------------------------------
// write a phy register using the MDIO.
//-----------------------------------------------------------------------------
void phyRegWrite(uint8_t in_phy, uint8_t in_reg, uint16_t in_data)
{
& &// make sure mdio is not busy.
& &while (CHKBIT(MDIO->USERACCESS0, USERACC_GO)) {}
& &MDIO->USERACCESS0 = USERACC_GO |
& && && && && && && && &USERACC_WRITE |
& && && && && && && && &(in_reg << USERACC_SHIFT_REG) |
& && && && && && && && &(in_phy << USERACC_SHIFT_PHY) |
& && && && && && && && &in_
}
代码其中之二：
/** Emac_des.c
** 由于在接收的过程中，可能存在一定的descriptor 问题，同时在与pbuf结合的情况
** 也存在着一些问题，故作如下修改。
** 现在决定作如下修改：
************************************/
#include "includes.h"
#include "Emac_des.h"
#include "evmomapl138.h"
#include "lwip/def.h"
#include "lwip/pbuf.h"
#include "lwip/sys.h"
#include "lwip/opt.h"
#include "inc/evmomapl138_emac.h"
#include "etharp.h"
#include "ethernetif.h"
/* CPPI RAM size in bytes */
#ifndef SIZE_CPPI_RAM
#define SIZE_CPPI_RAM& && && && &&&0x2000& &//8K, L138也一样
#endif
#define MAX_ALE_ENTRIES& && && && &1024
#define ENTRY_TYPE& && && && && &&&0x30
#define ENTRY_TYPE_IDX& && && && & 7
#define ENTRY_FREE& && && && && &&&0
/* MDIO input and output frequencies in Hz */
#define MDIO_FREQ_INPUT& && && && &
#define MDIO_FREQ_OUTPUT& && && &&&1000000
//flag --> 一样的描述
#define CPDMA_BUF_DESC_OWNER& && & 0x
#define CPDMA_BUF_DESC_SOP& && && &0x
#define CPDMA_BUF_DESC_EOP& && && &0x
#define CPDMA_BUF_DESC_EOQ& && && &0x
#define MAX_TRANSFER_UNIT& && && & 1518 // Lp modified
#define PBUF_LEN_MAX& && && && && &MAX_TRANSFER_UNIT
#define MAX_RX_PBUF_ALLOC& && && & 20& &//使用20个看看
#define MIN_PKT_LEN& && && && && & 60
/* Define those to better describe the network interface. */
#define IFNAME0& && && && && && & 'e'
#define IFNAME1& && && && && && & 'n'
/* TX Buffer descriptor data structure */
struct cpdma_tx_bd {
&&volatile struct cpdma_tx_bd *
&&volatile u32_
&&volatile u32_t bufoff_
&&volatile u32_t flags_
&&
&&/* 添加了一个这样的数据结构 */
&&volatile struct pbuf *
}cpdma_tx_
/* RX Buffer descriptor data structure */
struct cpdma_rx_bd {
&&volatile struct cpdma_rx_bd *
&&volatile u32_
&&volatile u32_t bufoff_
&&volatile u32_t flags_
&&/*添加了pbuf数据结构*/
&&volatile struct pbuf *
}cpdma_rx_
/**为的是编程者更好的处理RX channel发生的事件。***/
struct rxch {
&&volatile struct cpdma_rx_bd *free_
&&volatile struct cpdma_rx_bd *active_
&&volatile struct cpdma_rx_bd *active_
&&u32_t freed_pbuf_
}
/** 是TX Channel 更好的处理事件 ***/
struct txch {
&&volatile struct cpdma_tx_bd *free_
&&volatile struct cpdma_tx_bd *active_
&&volatile struct cpdma_tx_bd *next_bd_to_
}
/**
** 这个是整个EMAC的操作界面数据结构 -- 不需要
*/
struct emac_trif {
&&/* The tx/rx channels for the interface */
&&
&&
}emac_
/*
** 初始化buffer descriptor
** 换了一个方式，用一个pbuf 链的方式来接收，免去拷贝。
*/
err_t
Emac_des_init( void )
{
&&u32_t num_bd, pbuf_cnt = 0;
&&volatile struct cpdma_tx_bd *curr_txbd, *last_
&&volatile struct cpdma_rx_bd *curr_bd, *last_
&&struct txch *
&&struct rxch *
&&struct pbuf *p, *q;
&&//初始化.... 结构体..
&&//struct emac_trif {
&&memset((u8_t *)&emac_trif, 0, sizeof(emac_trif));
&&//struct txch {
&&memset((u8_t *)&txch, 0, sizeof(txch));
&&//struct rxch
&&memset((u8_t *)&rxch, 0, sizeof(rxch));
&&//struct cpdma_rx_bd {
&&memset((u8_t *)&cpdma_rx_bd, 0, sizeof(cpdma_rx_bd));
&&//struct cpdma_tx_bd {
&&memset((u8_t *)&cpdma_tx_bd, 0, sizeof(cpdma_rx_bd));
&&//取出txch的地址，以便操作
&&txch = &(emac_trif.txch);
//EMAC_RAM_BASE是L138的buffer descriptor 所在CPPI RAM的起始地址
&&txch->free_head = (volatile struct cpdma_tx_bd*)(EMAC_RAM_BASE);
&&txch->next_bd_to_process = txch->free_
&&txch->active_tail = (volatile struct cpdma_tx_bd *)NULL;
//多少个buffer desc, tx_bd... 特意SIZE_CPPI_RAM/2
&&num_bd = (SIZE_CPPI_RAM >> 1) / sizeof(cpdma_tx_bd);
&&
&&curr_txbd = txch->free_
&&/* Initialize all the TX buffer Descriptors */
&&while(num_bd--) {
& & curr_txbd->next = curr_txbd + 1;
& & & & curr_txbd->bufptr = 0; //初始化为0
& & curr_txbd->bufoff_len = 0; //也初始化为0
& & curr_txbd->flags_pktlen = 0;
& & curr_txbd->pbuf = 0;//现在还并没有pbuf要准备发送
& & last_txbd = curr_
& & curr_txbd = curr_txbd->
&&}
&&last_txbd->next = txch->free_
&&
&&/* Initialize the descriptors for the RX channel */
&&rxch = &(emac_trif.rxch);
&&rxch->active_head = (volatile struct cpdma_rx_bd*)(curr_txbd + 1);
&&
&&rxch->free_head = (volatile struct cpdma_rx_bd *)NULL;
&&rxch->freed_pbuf_len = 0;
&&num_bd = ((SIZE_CPPI_RAM >> 1) / sizeof(cpdma_rx_bd) - 1);
&&curr_bd = rxch->active_
&&last_bd = curr_
** 该驱动一个最大的不同就在此处，将接收的数据直接用DMA传送到pbuf,
** 以前我们都是用全局ram接收，而后拷贝至pbuf，还有一个不同就是
** 这里使用了EMAC部的CPPI_RAM空间，这样达到最好的效率。
** 但是为了考虑字节对齐的问题，还需要做点小小的修改
&&*/
&&while(pbuf_cnt < MAX_RX_PBUF_ALLOC) {//产生10个pbuf..供接收DMA传送
#if ETH_PAD_SIZE
& & p = pbuf_alloc(PBUF_RAW,(PBUF_LEN_MAX+ETH_PAD_SIZE), PBUF_POOL); //10 * 1500
& & & & pbuf_header(p, -ETH_PAD_SIZE); //向后移2个字节，接收过后，刚刚好
#endif //ETH_PAD_SIZE
& & pbuf_cnt++;
& &
& & if(p != NULL) {
& && &/* write the descriptors if there are enough numbers to hold the pbuf*/
& && &if(((u32_t)pbuf_clen(p)) <= num_bd) {
& & & && &// pbuf_clen(p)计算从p开始，pbuf链的长度
& & & && &//如果pbuf_alloc产生比num_bd更大长度的描述符，那么就是个悲剧了。
& && &&&for(q = q != NULL; q = q->next) {
& && && & curr_bd->bufptr = (u32_t)(q->payload); //buffer_ptr
& && && & curr_bd->bufoff_len = q-> //buffoff & buffer_len
& && && & curr_bd->next = curr_bd + 1; //next buffer descriptor
& && && & curr_bd->flags_pktlen = CPDMA_BUF_DESC_OWNER; //flag set or clear
& && && &
& && && & /* Save the pbuf */
& && && & curr_bd->pbuf =
& && && & last_bd = curr_
& && && & curr_bd = curr_bd->
& && && & num_bd--;
& && &&&}//for
& && &}//if <= num_bd
& &
& && &/* free the allocated pbuf if no free descriptors are left */
& && &else {
& && &&&pbuf_free(p);
& && &&&
& && &}//else pbuf chain len > num_bd
& & }//if p != NULL
& & else {
& && &
& & }//else p== NULL
&&}//while 产生10个
&&last_bd->next = (volatile struct cpdma_rx_bd *)NULL; //buff des chain 构造完成
&&rxch->active_tail = last_ //rxch控制着整个rxch的接收方式
&&EMAC->RXHDP[0] = (u32_t)(rxch->active_head); //add - lp
&&return ERR_OK;
}
/**
** 使用该rx_inhandler处理接收中断
** 每个pbuf链在处理之前必须要向前移ETH_PAD_SIZE个字节，以便4字节对齐
** 当你还要产生pbuf的时候，也要向后移ETH_PAD_SIZE个字节，以便接收。
* @param netif the lwip network interface structure for this ethernetif
* @return none
*/
void
Emac_rxint_handler(struct netif *netif) {
&&struct rxch *
&&volatile struct cpdma_rx_bd *curr_bd, *processed_bd, *curr_tail, *last_
&&volatile struct pbuf *pbuf, *q, *new_
&&u32_t ex_len = 0, len_to_alloc = 0;
&&u16_t tot_
//&&sitaraif = netif->
&&rxch = &(emac_trif.rxch);
&&//得到当前的rxch buffer desc
&&curr_bd = rxch->active_
&&last_bd = rxch->active_
&&
&&//pbuf链中，SOP只出现一次，但是curr_bd已将buffer链推向下一个可能出现
&&//SOP的开头，所以这种方式更加严谨和有效。& & & &
& &while(curr_bd->flags_pktlen & CPDMA_BUF_DESC_SOP) {
&&//用while是因为pbuf链来处理的
& & ex_len = 0;
& & len_to_alloc = 0;
& & //当OWNER被EMAC清掉的时候，EMAC就放弃了buff desc,可以做一些处理
& & if((curr_bd->flags_pktlen & CPDMA_BUF_DESC_OWNER)
& && & != CPDMA_BUF_DESC_OWNER) {
& && &if(rxch->free_head == NULL) {
& && &&&/* this bd chain will be freed after processing */
& && &&&rxch->free_head = curr_& &&&
& && &}//if NULL
& &&&
& & & && &//得到该接收到packet_len的长度
& && &tot_len = (curr_bd->flags_pktlen) & 0xFFFF;
& && &//保存当前接收的起始pbuf
& && &q = curr_bd->
& & & &&&//以下循环体为了更新除pbuf->payload除外，在结构体pbuf中
& & & &&&//的len,tot_len数据
& && &do {
& & & & & & & & //得到当前pbuf地址
& && &&&pbuf = curr_bd->
& && &&&
& && &&&/* If the earlier pbuf ended, update the chain */
& && &&&if(pbuf->next == NULL) {
& && && & pbuf->next = (struct pbuf*)(curr_bd->next)->
& && &&&} //if Null
& && &
& & & & & & & & //len_to_alloc , pbuf链中的len的总和
& && &&&len_to_alloc += pbuf->
& && &&&/* Update the len and tot_len fields for the pbuf in the chain*/
& && &&&pbuf->len = (curr_bd->bufoff_len) & 0xFFFF; //当前pbuf长度
& && &&&pbuf->tot_len = tot_len - ex_ //当前pbuf后的tot_len长度（含自己）
& && &&&processed_bd = curr_ //处理中的desc
& && &&&ex_len += pbuf->
& && &&&curr_bd = curr_bd->
& && &} while((processed_bd->flags_pktlen & CPDMA_BUF_DESC_EOP)
& && && && &&&!= CPDMA_BUF_DESC_EOP);
& && &/**
& && & * Close the chain for this pbuf. A full packet is received in
& && & * this pbuf chain. Now this pbuf can be given to upper layers for
& && & * processing. The start of the pbuf chain is now 'q'.
& && &*/
& && &pbuf->next = (struct pbuf *)NULL;
&&
//在q处理之前，需要加上ETH_PAD_SIZE个空间，以便4字节对齐
#if ETH_PAD_SIZE
& & & & if(q != NULL)
& & & & {
& & & & & & pbuf_header((struct pbuf *)q, ETH_PAD_SIZE);
#endif //ETH_PAD_SIZE
//为了节省中断的处理效率，这里节省时间，直接post msg给tcpip_thread
& & & & & & & & if((netif->input((struct pbuf *)q,netif)) != ERR_OK)
& & & & & & & & {
& & & & & & & & & & & & pbuf_free((struct pbuf *)q);
& & & & & & & & & & & & q = (volatile struct pbuf *)NULL;
& & & & & & & & }
#if ETH_PAD_SIZE
& & & & } //ETH_PAD_SIZE
#endif //ETH_PAD_SIZE
& && &/* Acknowledge that this packet is processed */
//& && &CPSWCPDMARxCPWrite(sitaraif->cpsw_cpdma_base, 0, (unsigned int)processed_bd);
& & & && &EMAC->RXCP[0] = (u32_t)processed_
& && &rxch->active_head = curr_
& &
& && &/**
& && & * The earlier pbuf chain is freed from the upper layer. So, we need to
& && & * allocate a new pbuf chain and update the descriptors with the pbuf info.
& && & * To support chaining, the total length freed by the upper layer is tracked.
& && & * Care should be taken even if the allocation fails.
& && & */& &
& && &/**
& && & * now len_to_alloc will contain the length of the pbuf which was freed
& && & * from the upper layer
& && & */
& && &rxch->freed_pbuf_len += len_to_
& && &new_pbuf = pbuf_alloc(PBUF_RAW, ((rxch->freed_pbuf_len)+ETH_PAD_SIZE), PBUF_POOL);
& && &/* Write the descriptors with the pbuf info till either of them expires */
& && &if(new_pbuf != NULL) {
#if ETH_PAD_SIZE
& & & && & & & & & pbuf_header((struct pbuf *)new_pbuf, -ETH_PAD_SIZE);
#endif //ETH_PAD_SIZE
& && &&&curr_bd = rxch->free_ //free_head,已经被释放的head,需要重新set
& & & & & & & & //以下循环体添加新的pbuf到curr_bd中去
& && &&&for(q = new_ (q != NULL) && (curr_bd != rxch->active_head); q = q->next) {
& && && & curr_bd->bufptr = (u32_t)(q->payload);
& && && &
& && && & /* no support for buf_offset. RXBUFFEROFFEST register is 0 */
& && && & curr_bd->bufoff_len = (q->len) & 0xFFFF;
& && && & curr_bd->flags_pktlen = CPDMA_BUF_DESC_OWNER;
& && && &
& && && & rxch->freed_pbuf_len -= q->
& && && &
& && && & /* Save the pbuf */
& && && & curr_bd->pbuf =
& && && & last_bd = curr_
& && && & curr_bd = curr_bd->
& && &&&}//for
& && && &
& && &&&/**
& && && &* At this point either pbuf expired or no rxbd to allocate. If
& && && &* there are no, enough rx bds to allocate all pbufs in the chain,
& && && &* free the rest of the pbuf
& && && &*/
& && &&&if(q != NULL) {
& && && & pbuf_free((struct pbuf *)q);
& && &&&}
& && &
& && &&&curr_tail = rxch->active_
& && &&&last_bd->next = (volatile struct cpdma_rx_bd *)NULL;
& && &
& && &&&curr_tail->next = rxch->free_
& && &&&
& && &&&/**
& && && &* Check if the reception has ended. If the EOQ flag is set, the NULL
& && && &* Pointer is taken by the DMA engine. So we need to write the RX HDP
& && && &* with the next descriptor.
& && && &*/
& && &&&if(curr_tail->flags_pktlen & CPDMA_BUF_DESC_EOQ) {
//& && && & CPSWCPDMARxHdrDescPtrWrite(sitaraif->cpsw_cpdma_base,
//& && && && && && && && && && && &&&(u32_t)(rxch->free_head), 0);
& & & & & & & & & & & & EMAC->RXHDP[0] = (u32_t)(rxch->free_head);
& && &&&}//if EOQ
& && &&&rxch->free_head&&= curr_
& && &&&rxch->active_tail = last_
& && &}//if new_pbuf
& & }//if OWNER
& & curr_bd = rxch->active_
//以下这句,L138未做要求.
//& & CPSWCPDMANumFreeBufSet(sitaraif->cpsw_cpdma_base, 0, 1);
// -----------括号不要删-------------------------------
&&}//While ....
//-------------------------------------------
// 以下在外面写
//&&CPSWCPDMAEndOfIntVectorWrite(sitaraif->cpsw_cpdma_base, CPSW_EOI_TX_PULSE);&&
//&&CPSWCPDMAEndOfIntVectorWrite(sitaraif->cpsw_cpdma_base, CPSW_EOI_RX_PULSE);&&
}
//---------------------------------------------------------------
//以下是发送部分
//---------------------------------------------------------------
/**
** 这个函数将pbuf链的数据发送给物理层，可能buffer_des连接多处，因为是
** pbuf链连接而成的
* @return None
**/
void Emac_transmit(struct pbuf *pbuf) {
&&struct pbuf *q;
&&struct txch *
&&volatile struct cpdma_tx_bd *curr_bd, *active_head, *bd_
// 取地址。
&&txch = &(emac_trif.txch);
//得到可以使用的空闲head
&&curr_bd = txch->free_
&&//激活的head
&&active_head = curr_
&&//更新该头的packet len 字段
&&curr_bd->flags_pktlen &= ~0xFFFF;
&&curr_bd->flags_pktlen |= pbuf->tot_
&&//交给EMAC之前，置位flags, SOP,OWNER
&&curr_bd->flags_pktlen |= (CPDMA_BUF_DESC_SOP | CPDMA_BUF_DESC_OWNER);
&&//把pbuf信息构建成buffer desc 链
&&for(q = q != NULL; q = q->next) {
& & /* Intialize the buffer pointer and length */
& & curr_bd->bufptr = (u32_t)(q->payload);
& & curr_bd->bufoff_len = (q->len) & 0xFFFF;
& & bd_end = curr_
& & curr_bd->pbuf =
& & curr_bd = curr_bd->
&&}
&&//将buffer desc结尾
&&bd_end->next = (volatile struct cpdma_tx_bd *)NULL;
&&bd_end->flags_pktlen |= CPDMA_BUF_DESC_EOP;
&&//free_head指向下一个空的buff descriptor 处
&&txch->free_head = curr_
&&//经过初始化之后,txch->active_tail指向NULL，但是发送buffer desc是一个
&&//单向的循环链表。所以这也是上面为什么bd_end->next要赋NULL值
&&if(txch->active_tail == NULL) {
// 第一次发送active_head
& & & & & & & & EMAC->TXHDP[0] = (u32_t)active_
&&}
&&/*
&&**第1次发送过后，假如发送完了，那么transmiter 将会halt，这样CPU在
&&**发送之前必须确认EOQ是否set,如果set,那么对于CPU来讲可以写HDP启动
&&**TXDMA发送了。
&&*/
&&else {
& & curr_bd = txch->active_
& & curr_bd->next = active_
& & if(curr_bd->flags_pktlen & CPDMA_BUF_DESC_EOQ) {
& &&&//假如EOQ被EMAC set之后，就启动tx DMA
& & & & & & & & EMAC->TXHDP[0] = (u32_t)active_
& & }
&&}
&&txch->active_tail = bd_
}
* This function will send a packet through the emac if the channel is
* available. Otherwise, the packet will be queued in a pbuf queue.
* @param netif the lwip network interface structure for this ethernetif
* @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)
* @return ERR_OK if the packet could be sent
*& && && &an err_t value if the packet couldn't be sent
*/
err_t
OmapEmac_output(struct netif *netif, struct pbuf *p)
{
&&INT8U os_err = 0;
&&SYS_ARCH_DECL_PROTECT(lev);
&&//等待有效的信号量才能发送
//&&OSSemPend(TxCmpSem, 1000, &os_err); // --LP ,
&&/**
& &* This entire function must run within a "critical section" to preserve
& &* the integrity of the transmit pbuf queue.
& &*
& &*/
&&SYS_ARCH_PROTECT(lev);
//在选择发送之前，要调整p->payload的两字节，因为它们不能发送出去
#if ETH_PAD_SIZE
&&pbuf_header(p, -ETH_PAD_SIZE);
#endif
&&/* adjust the packet length if less than minimum required */
&&if(p->tot_len < MIN_PKT_LEN) {
& &&&p->tot_len = MIN_PKT_LEN;
& &&&p->len = MIN_PKT_LEN;
&&}
&&/**
& &* Bump the reference count on the pbuf to prevent it from being
& &* freed till we are done with it.
& &*
& &*/
&&pbuf_ref(p);
& &
&&//Emac物理层的发送。DMA 用了TX中断的方式
&&Emac_transmit(p);
&&/* Return to prior interrupt state and return. */
&&SYS_ARCH_UNPROTECT(lev);
&&
&&return ERR_OK;
}
/**
** lower level 已经启动DMA发送了吗，这里是为了软件清掉SOP和EOP,然后就是pbuf
** 链表的回收。
* @param netif the lwip network interface structure for this ethernetif
* @return none
*/
void
Emac_txint_handler(struct netif *netif) {
&&struct txch *
&&volatile struct cpdma_tx_bd *curr_bd, *next_bd_to_&&
&&
//取txch结构体的地址
&&txch = &(emac_trif.txch);
//下一待处理的buff des, next_bd_to_process被初始化为(EMAC_RAM_BASE)& &
&&next_bd_to_process = txch->next_bd_to_
// 用curr_bd来处理&&
&&curr_bd = next_bd_to_
&&
&&/* Check for correct start of packet */
&&while((curr_bd->flags_pktlen) & CPDMA_BUF_DESC_SOP) {
& &
& & /* Make sure that the transmission is over */
& & while((curr_bd->flags_pktlen & CPDMA_BUF_DESC_OWNER)
& && && & == CPDMA_BUF_DESC_OWNER);
& &
& & /* Traverse till the end of packet is reached */
& & while(((curr_bd->flags_pktlen) & CPDMA_BUF_DESC_EOP) != CPDMA_BUF_DESC_EOP) {
& && & curr_bd = curr_bd->
& & }//while(!EOP)
& & next_bd_to_process->flags_pktlen &= ~(CPDMA_BUF_DESC_SOP);
& & curr_bd->flags_pktlen &= ~(CPDMA_BUF_DESC_EOP);
& & /**
& &&&* If there are no more data transmitted, the next interrupt
& &&&* shall happen with the pbuf associated with the free_head
& &&&*/
& & if(curr_bd->next == NULL) {
& && &txch->next_bd_to_process = txch->free_
& & }
&&
& & else {
& && &txch->next_bd_to_process = curr_bd-> //接着处理下一帧数据包
& & }
& &
& & //写TXCP[]，该帧数据包已经写完
//& & CPSWCPDMATxCPWrite(sitaraif->cpsw_cpdma_base, 0, (u32_t)curr_bd);
& & & & EMAC->TXCP[0] = (u32_t)curr_
& & pbuf_free((struct pbuf *)curr_bd->pbuf);
//& & LINK_STATS_INC(link.xmit);
& &
& & next_bd_to_process = txch->next_bd_to_
& & curr_bd = next_bd_to_
&&}
&&//发送信号量给发送部分保证发送的完整性。
//& & & & OSSemPost(TxCmpSem);&&//--lp ,
delete,查看效果。
//在外面写的
//&&CPSWCPDMAEndOfIntVectorWrite(sitaraif->cpsw_cpdma_base, CPSW_EOI_TX_PULSE);
//&&CPSWCPDMAEndOfIntVectorWrite(sitaraif->cpsw_cpdma_base, CPSW_EOI_RX_PULSE);
}
/********************* this file is end ****************************/
代码其中之三：
/**************************************************************************
*& && && && && && && && && && && && && && && && && && && && && && && && & *
*& &PROJECT& &&&: TMON (Transparent monitor)& && && && && && && && && && &*
*& && && && && && && && && && && && && && && && && && && && && && && && & *
*& &MODULE& && &: LWIP.c& && && && && && && && && && && && && && && && &&&*
*& && && && && && && && && && && && && && && && && && && && && && && && & *
*& &AUTHOR& && &: Michael Anburaj& && && && && && && && && && && && && &&&*
*& && && && && &&&URL&&: /michaelanburaj/& && && && & *
*& && && && && &&&EMAIL: & && && && && && && &&&*
*& && && && && && && && && && && && && && && && && && && && && && && && & *
*& &PROCESSOR& &: Any& && && && && && && && && && && && && && && && && &&&*
*& && && && && && && && && && && && && && && && && && && && && && && && & *
*& &Tool-chain&&: gcc& && && && && && && && && && && && && && && && && &&&*
*& && && && && && && && && && && && && && && && && && && && && && && && & *
*& &DESCRIPTION :& && && && && && && && && && && && && && && && && && && &*
*& &LwIP master source file.& && && && && && && && && && && && && && && & *
*& && && && && && && && && && && && && && && && && && && && && && && && & *
**************************************************************************/
#include "tcpip.h"
#include "ethernetif.h"
#include "netconf.h"
/* ********************************************************************* */
/* Global definitions */
netif_t& &&&main_
/* ********************************************************************* */
/* File local definitions */
/* ********************************************************************* */
/**
*** 初始化LwIP的协议栈
&&*/
void LwIP_Init( void )
{
&&struct ip_
&&struct ip_
&&struct ip_
& && &
&&tcpip_init(NULL, NULL);
&&
/** 在此处初始化IP地址 **/
&&IP4_ADDR(&ipaddr,192,168,1,88); //该宏需要执行的！
&&IP4_ADDR(&netmask,255,255,255,0);
&&IP4_ADDR(&gw,192,168,0,1);
&&MEMCPY(main_net.name,"glzn",4);
#if LWIP_NETIF_HOSTNAME&&
&&main_net.hostname = GetHostName();
#endif
&&/* - netif_add(struct netif *netif, struct ip_addr *ipaddr,
& && && && &struct ip_addr *netmask, struct ip_addr *gw,
& && && && &void *state, err_t (* init)(struct netif *netif),
& && && && &err_t (* input)(struct pbuf *p, struct netif *netif))
& &
& &Adds your network interface to the netif_list. Allocate a struct
&&netif and pass a pointer to this structure as the first argument.
&&Give pointers to cleared ip_addr structures when using DHCP,
&&or fill them with sane numbers otherwise. The state pointer may be NULL.
&&The init function pointer must point to a initialization function for
&&your ethernet netif interface. The following code illustrates it's use.*/
&&
&&
&&netif_add(&main_net, &ipaddr, &netmask, &gw, NULL, &ethernetif_init, &tcpip_input);
&&/*&&Registers the default network interface.*/
&&netif_set_default(&main_net);&&//可以删除 --, netif_default
&&/*&&When the netif is fully configured this function must be called.*/
& &netif_set_up(&main_net); //this functional
/* ********************************************************************* */
代码其中之四：
//主程序
//修改成适应LwIP v140的协议，此为系统main主函数
#include
#include "dspint.h"
#include "sample.h"
#include "edma.h"
#include "norflash.h"
#include "evmomapl138.h"
#include "evmomapl138_gpio.h"
#include "evmomapl138_uart.h"
#include "evmomapl138_rtc.h"
#include "io.h"
#include "fpga_emifa.h"
#include "test_fpga.h"
//推荐的任务堆栈区大小为2048 OS_STK,即8192 byte
#define COMMON_STACK_LEN 2048
//给各个任务分配的堆栈区
OS_STK&&TaskLWIPStk[COMMON_STACK_LEN];
OS_STK& & & & TaskAppMainStk[COMMON_STACK_LEN];
OS_STK& & & & TaskMMIStk[COMMON_STACK_LEN];
OS_STK& & & & TaskFpgaUPPStk[COMMON_STACK_LEN];
OS_STK& & & & TaskFpgaEMIFAStk[COMMON_STACK_LEN * 32];
//OS_STK& & & & TaskTestStk[COMMON_STACK_LEN];
//各个任务进程主函数
void TaskAppMain(void *pd);
void TaskMMI(void *pd);//通过upp总线刷液晶数据，触发dsp中断，启动upp发送
extern void TaskLWIP(void *p_arg); //TaskLWIP任务
//extern void TaskTest(void *pd);
int main()
{
& & & & //初始化中断向量
& & & & OS_CPU_InitExceptVect();
& & & & //初始化uC/OS-II实时内核
& & OSInit();
& & & & //创建系统主进程任务(放在最高优先级，包括装置定值、参数自检测，并作为其他任务的WatchDog。)
& & & & OSTaskCreate(TaskAppMain, (void *)0, (OS_STK*)&TaskAppMainStk[COMMON_STACK_LEN-1], 2);
& & //启动操作系统内核
& & & & OSStart();
}
//系统主进程任务
void TaskAppMain(void *pd)
{
& & & & unsigned char ucE
& & & & tmr0_init();
& & & & GPIOInit();
& & & & chipint_init();
& & & & memset((unsigned char *)TaskLWIPStk, 0, (COMMON_STACK_LEN*sizeof(OS_STK)));
//初始化由Lwip任务堆栈开辟的堆栈区域
& & & & //INT8U enledflag = /;
& & & & //INT32U counter = 0;
& & & & //创建任务
& & & & //OSTaskCreate(TaskFPGA_UPP, (void *)0, (OS_STK*)&TaskFpgaUPPStk[COMMON_STACK_LEN-1], 11);
//& & & & OSTaskCreate(TaskFPGA_EMIFA, (void *)0, (OS_STK*)&TaskFpgaEMIFAStk[COMMON_STACK_LEN-1], 12);
//& & & & OSTaskCreate(TaskMMI, (void *)0, (OS_STK*)&TaskMMIStk[COMMON_STACK_LEN-1], 13);
& & & & //OSTaskCreate(TaskTest, (void *)0, (OS_STK*)&TaskTestStk[COMMON_STACK_LEN-1],100);
& & & & OSTaskCreate(TaskLWIP,(void *)0,(OS_STK *)&TaskLWIPStk[COMMON_STACK_LEN -1],10);
& & & & while(1)
& & & & {
& & & && && & & & /*asm(" nop");
& && &&&counter++;
& & & & & & & & if(counter >=20)
& & & & & & & & {
& & & & & & & && & enledflag ^=0x01;
& && && &&&inb(ARM_DSP_CMD) =
& & & & & & & && & DspintArmtrip(DSPINTTYPE_2);
& && && &&&counter = 0;
& & & & & & & & }
& & & & & & & & if(enledflag == 0)
& & & & & & & & {
& & & & & & & & & & & & ledchange();
& & & & & & & & }*/
//& & & & & & & & OSTimeDly(500);
//& & & & & & & & OSMboxPend(RxCntMbox,0,&ucErr);
& & & && &&&OSTimeDly(1000);
& & & & & & & & asm(" nop");
& & & & }
}
//
#define&&SHAREMMI_ADR& & (0x)& &&&//共享液晶显示数据区地址
#define&&MMI_LNUM& && &&&(240)& && && && &//液晶显示一屏数据的行数目
#define&&MMI_LBYTE& && & (40)& && && && & //液晶显示一屏数据的行字节数目320/8
#define&&MMI_DATALEN& &&&(MMI_LNUM*MMI_LBYTE) //液晶显示缓冲区长度
#define&&SHARERAW_ADR& & (0x8002800)& &&&//共享原始数据区地址
#define&&SHAREMEA_ADR& & (0x)& &&&//共享测量结果区地址
//显存
#define LCD_XSIZE& && &&&(320)& && & // X方向像素
#define LCD_YSIZE& && &&&(240)& && & // Y方向像素
#define LCDMLEN ((LCD_XSIZE*LCD_YSIZE)/8)
INT8U LcdMemory[LCDMLEN];
void loadMMIdata()
{
& &INT8U *
& &INT16U
& &static INT8U showdata = 0;
& &static INT8U changeflag = 0;
& &changeflag++;
& &if(changeflag==6)
& &{
& & & & & & & & changeflag=0;
& & & & & & & & showdata++;
& &}
& &pobject =LcdM//(INT8U*)SHAREMMI_ADR;
& &if(showdata == 0)
& &{
& & & & & & & & for(i=0;i<MMI_DATALEN;i++)
& & & && &&&{
& & & && && &&&*pobject++ = (i+1)&0
& & & && &&&}
& &}
& &else
& &{
& & & & & & & & for(i=0;i<MMI_DATALEN;i++)
& & & && & {
& & & && && &&&*pobject++ =
& & & && & }
& &}& &
}
void TaskMMI(void *pd)
{
& & & & while(1)
& & & & {
& & & && &&&
& & & & & & & & //pushus(0);
& && &&&//loadMMIdata();
& & & & & & & & //EDMA0config(0,(void*)LcdMemory,(void*)SHAREMMI_ADR,LCDMLEN);
& & & & & & & &
& & & & & & & & //pushus(1);
& & & & & & & & RelayTest();
& & & & & & & & OSTimeDly(100);
& & & & }
}
代码其中之五：
/* main.c
** test lwip
***************************************************/
#include
#include "evmomapl138.h"
#include
#include
#include
#include "lwip/mem.h"
#include "lwip/memp.h"
#include "lwip/netif.h"
#include "lwip/tcpip.h"
#include "lwip.h"
// LwIP task stk Information
/**
** DEBUG Information
****************************************************/
** global value
***************************************************/
** function decl
**************************************************/
static void BSP_Init(void );
void tcpip_init_done(void *arg);
/* App_LwipTask
**
************************************************************************/
void TaskLWIP(void *parg)
{
& & & & //加载网卡驱动
& & & & //加载L138本身自带的EMAC驱动
& & & & //Lwip_v140使用lwip.c处理初始化网口的信息，主任务只要调用lwip_Init()即可
& & & & LwIP_Init();
& & & & while(1)
& & & & {
& & & & & & & & OSTimeDly(2000);
& & & & }
}
/* BSP_Init()
** 配置启动的时钟，貌似omapL138_app/boot.asm 中
** 有初始化STACK等配置，但是没有见到其内有时钟配置，工程初始化时也没有发现。
** 故要初始化PLL
********************************************/
void BSP_Init(void)
{
& & & & EVMOMAPL138_Init();
}
我贴了一些代码，请看看帮帮忙，我真不知道该如何解决啦...复制代码
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