# Progress
[TOC]

## Cortex-M55 for CMSIS-NN
[ref](https://github.com/HimaxWiseEyePlus/Seeed_Grove_Vision_AI_Module_V2/blob/main/README.md)
- Environment setup
1. Arm GNU toolchain

    cd ~
    wget https://developer.arm.com/-/media/Files/downloads/gnu/13.2.rel1/binrel/arm-gnu-toolchain-13.2.rel1-x86_64-arm-none-eabi.tar.xz
    tar -xvf arm-gnu-toolchain-13.2.rel1-x86_64-arm-none-eabi.tar.xz
    export PATH="$HOME/arm-gnu-toolchain-13.2.Rel1-x86_64-arm-none-eabi/bin/:$PATH"

2. Clone Himax repo

    git clone --recursive https://github.com/HimaxWiseEyePlus/Seeed_Grove_Vision_AI_Module_V2.git
    cd Seeed_Grove_Vision_AI_Module_V2

3. Package for flashing the firmware

    pip install -r xmodem/requirements.txt # create virtual environment first
    sudo apt-get install minicom

- Build the firmware
1. change directory to EPII_CM55M_APP_S

    cd EPII_CM55M_APP_S

2. Modify the setting in `./makefile` to run the model without passing vela and using the CMSIS-NN library.

    LIB_CMSIS_NN_ENALBE = 1  
    
    # APP_TYPE = allon_sensor_tflm
    APP_TYPE = allon_sensor_tflm_cmsis_nn

3. create `./fast_build.sh` and compile the firmware to image file with it

    #!/bin/bash
    # we2_build.sh
    # 簡易範例：移動目錄、複製檔案、並執行產生工具

    make clean || {
      echo "make clean 失敗"
      exit 1
    }

    # 0.1 make -j8
    make -j8 || {
      echo "make -j8 失敗"
      exit 1
    }

    # 1. 進入 we2_image_gen_local 目錄
    cd ../we2_image_gen_local/ || {
      echo "切換目錄失敗，請確認路徑是否正確"
      exit 1
    }

    # 2. 複製 EPII_CM55M_gnu_epii_evb_WLCSP65_s.elf 到 input_case1_secboot/
    cp ../EPII_CM55M_APP_S/obj_epii_evb_icv30_bdv10/gnu_epii_evb_WLCSP65/EPII_CM55M_gnu_epii_evb_WLCSP65_s.elf input_case1_secboot/ || {
      echo "複製檔案失敗，請確認路徑及檔名是否正確"
      exit 1
    }

    # 3. 執行 we2_local_image_gen
    ./we2_local_image_gen project_case1_blp_wlcsp.json || {
      echo "we2_local_image_gen 執行失敗"
      exit 1
    }

    echo "=== 指令全部執行完成 ==="

- Flash the firmware
1. Connect the board
2. open the permission & Setup minicom

    # sudo setfacl -m u:vic:rw /dev/ttyACM0
    sudo setfacl -m u:${YOUR_USERNAME}:rw ${YOUR_COM_PORT}
    sudo minicom -s


3. run python script to flash image

    cd ..
    python xmodem/xmodem_send.py --port=/dev/ttyACM0 --baudrate=921600 --protocol=xmodem --file=we2_image_gen_local/output_case1_sec_wlcsp/output.img

4. press reset button on board