【安路 EG4S20 版本】HDMI_Ethernet_DAP_SDRAM_Camera使用指南

模块简介

HDMI_VGA_Ethernet_SD_DAP模块是和DMZ_EG4S20 FPGA开发板配合使用的，为EG4S20大拇指核心板提供HDMI输出、VGA输出、千兆以太网通信、SD卡（与VGA复用IO）功能，模块上还集成了Arm CMSIS DAP调试器，用于调试编写到FPGA内部的Cortex-M0软核。

开发板功能和接口介绍

模块插在EG4S20上的正面视图

模块背面视图

功能模块说明

模块与FPGA的引脚连接

//Ethernet
set_pin_assignment { e_mdc } { LOCATION = F4; IOSTANDARD = LVCMOS33; }
set_pin_assignment { e_mdio } { LOCATION = F3; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_rxc } { LOCATION = K6; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_rxctl } { LOCATION = L4; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_rxd[0] } { LOCATION = L3; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_rxd[1] } { LOCATION = J6; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_rxd[2] } { LOCATION = K3; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_rxd[3] } { LOCATION = K5; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_txc } { LOCATION = H3; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_txctl } { LOCATION = G3; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_txd[0] } { LOCATION = H5; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_txd[1] } { LOCATION = G6; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_txd[2] } { LOCATION = H4; IOSTANDARD = LVCMOS33; }
set_pin_assignment { rgmii_txd[3] } { LOCATION = G5; IOSTANDARD = LVCMOS33; }
//HDMI
set_pin_assignment { HDMI_CLK_P } { LOCATION = P4; IOSTANDARD = LVDS33; }
set_pin_assignment { HDMI_D0_P } { LOCATION = J3; IOSTANDARD = LVDS33; }
set_pin_assignment { HDMI_D1_P } { LOCATION = N1; IOSTANDARD = LVDS33; }
set_pin_assignment { HDMI_D2_P } { LOCATION = P1; IOSTANDARD = LVDS33; }
//VGA
set_pin_assignment { VGA_B[0] } { LOCATION = D1; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_B[1] } { LOCATION = M5; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_B[2] } { LOCATION = E1; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_B[3] } { LOCATION = E2; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_B[4] } { LOCATION = F1; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_G[0] } { LOCATION = F2; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_G[1] } { LOCATION = H2; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_G[2] } { LOCATION = G1; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_G[3] } { LOCATION = J1; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_G[4] } { LOCATION = H1; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_G[5] } { LOCATION = K2; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_R[0] } { LOCATION = K1; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_R[1] } { LOCATION = L5; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_R[2] } { LOCATION = L1; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_R[3] } { LOCATION = M4; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_R[4] } { LOCATION = N3; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_VS } { LOCATION = M3; IOSTANDARD = LVCMOS33; }
set_pin_assignment { VGA_HS } { LOCATION = M2; IOSTANDARD = LVCMOS33; }
//DAP调试器接口
set_pin_assignment { SWCLK } { LOCATION = R2; }
set_pin_assignment { SWDIO } { LOCATION = P2; }

例程功能

VGA_hdmi_tx_display

在HDMI和VGA口上同时输出纯色、彩条和黑白格等测试图像

rgmii_ethernet

移植自黑金科技的千兆以太网程序，请查看压缩包中的PDF实验文档

Cortex-M0

用于测试DAP调试器接口的M0程序：

使用MicroUSB线连接EG4S20调试器USB口和电脑，在TD文件夹中使用TD5.0.3版本打开工程下载bit文件到FPGA中，将SW0开关拨向上方（设定RSTn=1）。
用另一根Micro USB线连接HDMI模块上的DAP USB口和电脑。
在Keil文件夹中打开exp1.uvprojx工程，点击Options for Target按钮。

在debug项目条中选择CMSIS-DAP Debugger:

点击Setting，看到SWDIO中找到器件，说明成功

SDRAM_FIFO_503

用于测试EG4S20内部SDRAM，注意在5.0.3以上版本由于RAMFIFO的IP变动，程序无法编译通过。
程序下载后，SW0拨向上方，LED0常亮说明测试通过，LED0闪烁说明测试不通过。可以通过Chipwatcher观察读写结果。

Cam_DVP_565

摄像头OV2640通过FPGA的BRAM后从VGA口发出的例程。OV2640的插接位置如下：

OV2640的引脚分配如下：
set_pin_assignment {cam_data[0]} { LOCATION = T8; IOSTANDARD = LVCMOS33; }
set_pin_assignment {cam_data[1]} { LOCATION = T9; IOSTANDARD = LVCMOS33; }
set_pin_assignment {cam_data[2]} { LOCATION = R9; IOSTANDARD = LVCMOS33; }
set_pin_assignment {cam_data[3]} { LOCATION = T12; IOSTANDARD = LVCMOS33; }
set_pin_assignment {cam_data[4]} { LOCATION = R12; IOSTANDARD = LVCMOS33; }
set_pin_assignment {cam_data[5]} { LOCATION = T13; IOSTANDARD = LVCMOS33; }
set_pin_assignment {cam_data[6]} { LOCATION = N5; IOSTANDARD = LVCMOS33; }
set_pin_assignment {cam_data[7]} { LOCATION = P5; IOSTANDARD = LVCMOS33; }
set_pin_assignment {cam_href} { LOCATION = T5; }
set_pin_assignment {cam_pclk} { LOCATION = M6; }
set_pin_assignment {cam_pwdn} { LOCATION = P6; }
set_pin_assignment {cam_rst} { LOCATION = T7; }
set_pin_assignment {cam_soic} { LOCATION = R5; PULLTYPE = PULLUP; }
set_pin_assignment {cam_soid} { LOCATION = T6; }
set_pin_assignment {cam_vsync} { LOCATION = T4; }
set_pin_assignment {cam_xclk} { LOCATION = T14; }