原創(chuàng)聲明:
本原創(chuàng)教程由芯驛電子科技(上海)有限公司(ALINX)創(chuàng)作,版權(quán)歸本公司所有,如需轉(zhuǎn)載,需授權(quán)并注明出處。
適用于板卡型號(hào):
AXU2CGA/AXU2CGB/AXU3EG/AXU4EV-E/AXU4EV-P/AXU5EV-E/AXU5EV-P /AXU9EG/AXU15EG
vivado工程目錄為“ps_hello/vivado”
vitis工程目錄為“ps_net/vitis”
軟件工程師工作內(nèi)容
以下為軟件工程師負(fù)責(zé)內(nèi)容。
開(kāi)發(fā)板有兩路千兆以太網(wǎng),通過(guò)RGMII接口連接,本實(shí)驗(yàn)演示如何使用Vitis自帶的LWIP模板進(jìn)行PS端千兆以太網(wǎng)TCP通信。
LWIP雖然是輕量級(jí)協(xié)議棧,但如果從來(lái)沒(méi)有使用過(guò),使用起來(lái)會(huì)有一定的困難,建議先熟悉LWIP的相關(guān)知識(shí)。
1. Vitis程序開(kāi)發(fā)
1.1 LWIP庫(kù)修改
由于自帶的LWIP庫(kù)只能識(shí)別部分phy芯片,如果開(kāi)發(fā)板所用的phy芯片不在默認(rèn)支持范圍內(nèi),要修改庫(kù)文件。也可以直接使用修改過(guò)的庫(kù)替換原有的庫(kù)。
1) 找到庫(kù)文件目錄“X:\xxx\Vitis\2020.1\data\embeddedsw\ThirdParty\sw_services”
2)找到要修改的文件目錄“l(fā)wip211_v1_2\src\contrib\ports\xilinx\netif”中文件“xaxiemacif_physpeed.c”和“xemacpsif_physpeed.c”要修改。
3)修改PL端的“xaxiemacif_physpeed.c”文件,添加相關(guān)宏定義
4)添加phy速度獲取函數(shù)
unsignedintget_phy_speed_ksz9031(XAxiEthernet*xaxiemacp,u32phy_addr){ u16control; u16status; u16partner_capabilities; xil_printf("StartPHYautonegotiation\r\n"); XAxiEthernet_PhyWrite(xaxiemacp,phy_addr,IEEE_PAGE_ADDRESS_REGISTER,2); XAxiEthernet_PhyRead(xaxiemacp,phy_addr,IEEE_CONTROL_REG_MAC,&control); //control|=IEEE_RGMII_TXRX_CLOCK_DELAYED_MASK; control&=~(0x10); XAxiEthernet_PhyWrite(xaxiemacp,phy_addr,IEEE_CONTROL_REG_MAC,control); XAxiEthernet_PhyWrite(xaxiemacp,phy_addr,IEEE_PAGE_ADDRESS_REGISTER,0); XAxiEthernet_PhyRead(xaxiemacp,phy_addr,IEEE_AUTONEGO_ADVERTISE_REG,&control); control|=IEEE_ASYMMETRIC_PAUSE_MASK; control|=IEEE_PAUSE_MASK; control|=ADVERTISE_100; control|=ADVERTISE_10; XAxiEthernet_PhyWrite(xaxiemacp,phy_addr,IEEE_AUTONEGO_ADVERTISE_REG,control); XAxiEthernet_PhyRead(xaxiemacp,phy_addr,IEEE_1000_ADVERTISE_REG_OFFSET, &control); control|=ADVERTISE_1000; XAxiEthernet_PhyWrite(xaxiemacp,phy_addr,IEEE_1000_ADVERTISE_REG_OFFSET, control); XAxiEthernet_PhyWrite(xaxiemacp,phy_addr,IEEE_PAGE_ADDRESS_REGISTER,0); XAxiEthernet_PhyRead(xaxiemacp,phy_addr,IEEE_COPPER_SPECIFIC_CONTROL_REG, &control); control|=(7<<12); /*?max?number?of?gigabit?attempts?*/ control?|=(1<<11); /*?enable?downshift?*/ XAxiEthernet_PhyWrite(xaxiemacp,?phy_addr,?IEEE_COPPER_SPECIFIC_CONTROL_REG, control); XAxiEthernet_PhyRead(xaxiemacp,?phy_addr,?IEEE_CONTROL_REG_OFFSET,&control); control?|=?IEEE_CTRL_AUTONEGOTIATE_ENABLE; control?|=?IEEE_STAT_AUTONEGOTIATE_RESTART; XAxiEthernet_PhyWrite(xaxiemacp,?phy_addr,?IEEE_CONTROL_REG_OFFSET,?control); XAxiEthernet_PhyRead(xaxiemacp,?phy_addr,?IEEE_CONTROL_REG_OFFSET,&control); control?|=?IEEE_CTRL_RESET_MASK; XAxiEthernet_PhyWrite(xaxiemacp,?phy_addr,?IEEE_CONTROL_REG_OFFSET,?control); while(1){ XAxiEthernet_PhyRead(xaxiemacp,?phy_addr,?IEEE_CONTROL_REG_OFFSET,&control); if(control?&?IEEE_CTRL_RESET_MASK) continue; else break; } xil_printf("Waiting?for?PHY?to?complete?autonegotiation.\r\n"); XAxiEthernet_PhyRead(xaxiemacp,?phy_addr,?IEEE_STATUS_REG_OFFSET,&status); while(!(status?&?IEEE_STAT_AUTONEGOTIATE_COMPLETE)){ sleep(1); XAxiEthernet_PhyRead(xaxiemacp,?phy_addr,?IEEE_STATUS_REG_OFFSET, &status); } xil_printf("autonegotiation?complete?\r\n"); XAxiEthernet_PhyRead(xaxiemacp,?phy_addr,0x1f,&partner_capabilities); if((partner_capabilities?&0x40)==0x40)/*?1000Mbps?*/ return1000; elseif((partner_capabilities?&0x20)==0x20)/*?100Mbps?*/ return100; elseif((partner_capabilities?&0x10)==0x10)/*?10Mbps?*/ return10; else return0;}
5) 修改函數(shù)“get_IEEE_phy_speed”,添加對(duì)KSZ9031的支持。
unsignedget_IEEE_phy_speed(XAxiEthernet*xaxiemacp){ u16phy_identifier; u16phy_model; u8phytype;#ifdefXPAR_AXIETHERNET_0_BASEADDR u32phy_addr=detect_phy(xaxiemacp); /*GetthePHYIdentifierandModelnumber*/ XAxiEthernet_PhyRead(xaxiemacp,phy_addr,PHY_IDENTIFIER_1_REG,&phy_identifier); XAxiEthernet_PhyRead(xaxiemacp,phy_addr,PHY_IDENTIFIER_2_REG,&phy_model);/*DependinguponwhatmanufacturerPHYisconnected,adifferentmaskis*neededtodeterminethespecificmodelnumberofthePHY.*/ if(phy_identifier==MARVEL_PHY_IDENTIFIER){ phy_model=phy_model&MARVEL_PHY_MODEL_NUM_MASK; if(phy_model==MARVEL_PHY_88E1116R_MODEL){ returnget_phy_speed_88E1116R(xaxiemacp,phy_addr); }elseif(phy_model==MARVEL_PHY_88E1111_MODEL){ returnget_phy_speed_88E1111(xaxiemacp,phy_addr); } }elseif(phy_identifier==TI_PHY_IDENTIFIER){ phy_model=phy_model&TI_PHY_DP83867_MODEL; phytype=XAxiEthernet_GetPhysicalInterface(xaxiemacp); if(phy_model==TI_PHY_DP83867_MODEL&&phytype==XAE_PHY_TYPE_SGMII){ returnget_phy_speed_TI_DP83867_SGMII(xaxiemacp,phy_addr); } if(phy_model==TI_PHY_DP83867_MODEL){ returnget_phy_speed_TI_DP83867(xaxiemacp,phy_addr); } } elseif(phy_identifier==MICREL_PHY_IDENTIFIER) { xil_printf("Phy%disKSZ9031\n\r",phy_addr); get_phy_speed_ksz9031(xaxiemacp,phy_addr); } else{ LWIP_DEBUGF(NETIF_DEBUG,("XAxiEthernetget_IEEE_phy_speed:DetectedPHYwithunknownidentifier/model.\r\n")); }#endif#ifdefPCM_PMA_CORE_PRESENT returnget_phy_negotiated_speed(xaxiemacp,phy_addr);#endif}
6) 修改PS端“xemacpsif_physpeed.c”文件添加宏定義
7) 添加phy速度獲取函數(shù)
staticu32_tget_phy_speed_ksz9031(XEmacPs*xemacpsp,u32_tphy_addr){ u16_ttemp; u16_tcontrol; u16_tstatus; u16_tstatus_speed; u32_ttimeout_counter=0; u32_ttemp_speed; u32_tphyregtemp; xil_printf("StartPHYautonegotiation\r\n"); XEmacPs_PhyWrite(xemacpsp,phy_addr,IEEE_PAGE_ADDRESS_REGISTER,2); XEmacPs_PhyRead(xemacpsp,phy_addr,IEEE_CONTROL_REG_MAC,&control); control|=IEEE_RGMII_TXRX_CLOCK_DELAYED_MASK; XEmacPs_PhyWrite(xemacpsp,phy_addr,IEEE_CONTROL_REG_MAC,control); XEmacPs_PhyWrite(xemacpsp,phy_addr,IEEE_PAGE_ADDRESS_REGISTER,0); XEmacPs_PhyRead(xemacpsp,phy_addr,IEEE_AUTONEGO_ADVERTISE_REG,&control); control|=IEEE_ASYMMETRIC_PAUSE_MASK; control|=IEEE_PAUSE_MASK; control|=ADVERTISE_100; control|=ADVERTISE_10; XEmacPs_PhyWrite(xemacpsp,phy_addr,IEEE_AUTONEGO_ADVERTISE_REG,control); XEmacPs_PhyRead(xemacpsp,phy_addr,IEEE_1000_ADVERTISE_REG_OFFSET, &control); control|=ADVERTISE_1000; XEmacPs_PhyWrite(xemacpsp,phy_addr,IEEE_1000_ADVERTISE_REG_OFFSET, control); XEmacPs_PhyWrite(xemacpsp,phy_addr,IEEE_PAGE_ADDRESS_REGISTER,0); XEmacPs_PhyRead(xemacpsp,phy_addr,IEEE_COPPER_SPECIFIC_CONTROL_REG, &control); control|=(7<<12); /*?max?number?of?gigabit?attempts?*/ control?|=(1<<11); /*?enable?downshift?*/ XEmacPs_PhyWrite(xemacpsp,?phy_addr,?IEEE_COPPER_SPECIFIC_CONTROL_REG, control); XEmacPs_PhyRead(xemacpsp,?phy_addr,?IEEE_CONTROL_REG_OFFSET,&control); control?|=?IEEE_CTRL_AUTONEGOTIATE_ENABLE; control?|=?IEEE_STAT_AUTONEGOTIATE_RESTART; XEmacPs_PhyWrite(xemacpsp,?phy_addr,?IEEE_CONTROL_REG_OFFSET,?control); XEmacPs_PhyRead(xemacpsp,?phy_addr,?IEEE_CONTROL_REG_OFFSET,&control); control?|=?IEEE_CTRL_RESET_MASK; XEmacPs_PhyWrite(xemacpsp,?phy_addr,?IEEE_CONTROL_REG_OFFSET,?control); while(1){ XEmacPs_PhyRead(xemacpsp,?phy_addr,?IEEE_CONTROL_REG_OFFSET,&control); if(control?&?IEEE_CTRL_RESET_MASK) continue; else break; } XEmacPs_PhyRead(xemacpsp,?phy_addr,?IEEE_STATUS_REG_OFFSET,&status); xil_printf("Waiting?for?PHY?to?complete?autonegotiation.\r\n"); while(!(status?&?IEEE_STAT_AUTONEGOTIATE_COMPLETE)){ sleep(1); XEmacPs_PhyRead(xemacpsp,?phy_addr, IEEE_COPPER_SPECIFIC_STATUS_REG_2,&temp); timeout_counter++; if(timeout_counter?==30){ xil_printf("Auto?negotiation?error?\r\n"); return; } XEmacPs_PhyRead(xemacpsp,?phy_addr,?IEEE_STATUS_REG_OFFSET,&status); } xil_printf("autonegotiation?complete?\r\n"); XEmacPs_PhyRead(xemacpsp,?phy_addr,0x1f, &status_speed); if((status_speed?&0x40)==0x40)/*?1000Mbps?*/ return1000; elseif((status_speed?&0x20)==0x20)/*?100Mbps?*/ return100; elseif((status_speed?&0x10)==0x10)/*?10Mbps?*/ return10; else return0; return?XST_SUCCESS;}
8)修改函數(shù)“get_IEEE_phy_speed”,添加對(duì)KSZ9031的支持
staticu32_tget_IEEE_phy_speed(XEmacPs*xemacpsp,u32_tphy_addr){ u16_tphy_identity; u32_tRetStatus; XEmacPs_PhyRead(xemacpsp,phy_addr,PHY_IDENTIFIER_1_REG, &phy_identity); if(phy_identity==MICREL_PHY_IDENTIFIER){ RetStatus=get_phy_speed_ksz9031(xemacpsp,phy_addr); }elseif(phy_identity==PHY_TI_IDENTIFIER){ RetStatus=get_TI_phy_speed(xemacpsp,phy_addr); }elseif(phy_identity==PHY_REALTEK_IDENTIFIER){ RetStatus=get_Realtek_phy_speed(xemacpsp,phy_addr); }else{ RetStatus=get_Marvell_phy_speed(xemacpsp,phy_addr); } returnRetStatus;}
1.2 創(chuàng)建APP工程時(shí)基于LWIP模板
2.下載調(diào)試
測(cè)試環(huán)境要求有一臺(tái)支持dhcp的路由器,開(kāi)發(fā)板連接路由器可以自動(dòng)獲取IP地址,實(shí)驗(yàn)主機(jī)和開(kāi)發(fā)板在一個(gè)網(wǎng)絡(luò),可以相互通信。
2.1 以太網(wǎng)測(cè)試
1) 連接串口打開(kāi)串口調(diào)試終端,連接好PS端以太網(wǎng)網(wǎng)線到路由器,運(yùn)行Vitis下載程序
2)可以看到串口打印出一些信息,可以看到自動(dòng)獲取到地址為“192.168.1.63”,連接速度1000Mbps,tcp端口為7
3) 使用telnet連接
4) 當(dāng)輸入一個(gè)字符時(shí),開(kāi)發(fā)板返回相同字符
3. 實(shí)驗(yàn)總結(jié)
通過(guò)實(shí)驗(yàn)我們更加深刻了解到Vitis程序的開(kāi)發(fā),本實(shí)驗(yàn)只是簡(jiǎn)單的講解如何創(chuàng)建一個(gè)LWIP應(yīng)用,LWIP可以完成UDP、TCP等協(xié)議,在后續(xù)的教程中我們會(huì)提供基于以太網(wǎng)的具體應(yīng)用,例如ADC采集數(shù)據(jù)通過(guò)以太網(wǎng)發(fā)送,攝像頭數(shù)據(jù)通過(guò)以太網(wǎng)發(fā)送上位機(jī)顯示。
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