MC3172介紹

廈門感芯科技多線程處理器 MC3172開發板，64線程同步并行運行，各個線程速度可按需配置，硬件級實時響應，無需中斷服務程序，無需實時操作系統。RISC-V RV32IMC 指令集，100%單周期指令，133至200MHz主頻，3.37coremark/MHz。極其適合高實時多并發應用場景。

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下載交叉編譯工具鏈

感芯科技官網上有開發資料

http://www.gxchip.cn/down/show-70.html

http://www.mounriver.com/download

選擇 Linux，下載 MRS_Toolchain_Linux_x64_V1.50.tar.xz

解壓到/home/nihui/osd/MRS_Toolchain_Linux_x64_V1.50

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下載和編譯 MC3172-CMake 例子

dreamcmi 已經配好了可以編譯的 MC3172-CMake 工程

git clone https://github.com/dreamcmi/MC3172-CMake

修改 CMakeLists.txt 中的工具鏈設置

set(TOOLPATH  "/home/nihui/osd/MRS_Toolchain_Linux_x64_V1.50/RISC-V Embedded GCC/bin/riscv-none-embed-")

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cmake 常規的步驟編譯

cd MC3172-CMake
mkdir build
cd build
cmake ..
make -j4

使用 wine 啟動 MC3172 線程配置工具

fedora 安裝 wine

su
dnf install wine

wine 啟動線程配置工具，用法和 Windows 環境一致

cd MC3172-CMake/MC3172
wine 線程配置工具_V1.exe

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下載和編譯GX芯片下載工具 GX_ISPTool

https://gitee.com/gxchip/GX_ISPTool

生成makefile，編譯報錯找不到 hidapi

qmake-qt5 -makefile GX_ISPTool.pro
make -j4

fedora 安裝依賴包 hidapi-devel

su
dnf install hidapi-devel

修改工程配置，鏈接庫改為 hidapi-libusb，重新生成makefile編譯通過

unix:!macx {
        LIBS += -L$$_PRO_FILE_PWD_/hidapi/linux  -lhidapi
    }

unix:!macx {
        LIBS += -L$$_PRO_FILE_PWD_/hidapi/linux  -lhidapi-libusb
    }

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燒錄固件，串口連接和測試

普通用戶啟動 GX-ISPTool，找不到 MC3172 設備，用 root 啟動解決

su
./GX-ISPTool

microusb線連接 MC3172開發板

[22616.377685] usb 1-3: new full-speed USB device number 5 using xhci_hcd
[22616.665383] usb 1-3: New USB device found, idVendor=5131, idProduct=2007, bcdDevice= 2.00
[22616.665386] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[22616.665387] usb 1-3: Product: GX_LINK
[22616.665388] usb 1-3: Manufacturer: GAN
[22616.665389] usb 1-3: SerialNumber: 2021-07-25
[22616.691221] hid-generic 0003:5131:2007.0005: hiddev98,hidraw4: USB HID v1.00 Device [GAN GX_LINK] on usb-0000:02:00.0-3/input0

連接設備，選擇 MC3172-CMake/build/mc3172-cmake.hex

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USB串口的TX接PC2，RX接PC3

[22914.744467] usb 1-5: new full-speed USB device number 6 using xhci_hcd
[22915.139345] usb 1-5: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00
[22915.139349] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[22915.139351] usb 1-5: Product: FT232R USB UART
[22915.139352] usb 1-5: Manufacturer: FTDI
[22915.139353] usb 1-5: SerialNumber: A50285BI
[22915.177101] usbcore: registered new interface driver ftdi_sio
[22915.177107] usbserial: USB Serial support registered for FTDI USB Serial Device
[22915.177142] ftdi_sio 1-5:1.0: FTDI USB Serial Device converter detected
[22915.177151] usb 1-5: Detected FT232RL
[22915.183426] usb 1-5: FTDI USB Serial Device converter now attached to ttyUSB0