RISC-V编译环境搭建
1.JTAG调试器设置将JTAG调试器连接PC，并断开主机连接将其连接到UBUNTU虚拟机，运行lsusb
应该有以下这个设备：Bus 002 Device 010: ID 0403:6010 Future Technology Devices International, Ltd FT2232C Dual USB-UART/FIFO IC
设置udev rules，使JTAG调试器可以被plugdev group访问sudo gedit /etc/udev/rules.d/99-vmware-scsi-udev.rules
在里面添加ATTR{idVendor}=="0403", ATTR{idProduct}=="6010", MODE="660", GROUP="plugdev"
使用如下命令查看该USB设备是否属于plugdev groupls -l / /dev/ttyUSB1
将用户名添加到plugdev group中
whoami
sudo usermod -a -G plugdev username
确认自己的用户名是否属于plugdev group
[*]groups
[*]将gnu-mcu-eclipse-openocd-0.10.0-8-20180724-1118-centos64.tgz放到~/根目录下，并解压
cd ~/
tar -xzvf gnu-mcu-eclipse-openocd-0.10.0-8-20180724-1118-centos64.tgz
cd ~/e200_opensource/sirv-e-sdk/
mkdir -p work/build/opencd/prefix
cd work/build/opencd/prefix/
ln -s ~/gnu-mcu-eclipse/openocd/0.10.0-8-20180724-1118/bin/ bin
cd ~/e200_opensource/sirv-e-sdk/
mkdir -p work/build/riscv-gnu-toolchain/risc32-unknown-elf/prefix/
cd work/build/riscv-gnu-toolchain/risc32-unknown-elf/prefix/
ln -s ~/gnu-mcu-eclipse/riscv-none-gcc/7.2.0-2-20180111-2230/bin/ bin
3.编译demo_gpio程序，命令如下：cd ~/e200_opensource/sirv-e-sdk/
make software PROGRAM=demo_gpio BOARD=sirv-e203-arty
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