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# 1.3.2 Binary to C Array script help

This document describes the usage of btl_bin_to_c_array.py host script

Path of the tool in bootloader repository is tools/btl_bin_to_c_array.py

Setting up the Host PC

- The Script is compatible with Python 3.x and higher

Description

- This script should be used to convert the binary file to a C style array containing Hex output that can be directly included in target application code

- It is mainly used when programming the application using the host_app_nvm application in I2C Bootloader

- If size of the input binary file is not aligned to device erase boundary it appends 0xFF to the binary to make it aligned and then generates the Hex output

- User must specify the binary file to convert (-b), hex output file (-o) and the device (-d)

Usage Examples

Below is the syntax to show help menu for the script

    python <harmony3_path>/bootloader/tools/btl_bin_to_c_array.py --help

Below is the syntax and an example on how to convert the binary file to a C style array containing Hex output

    python <harmony3_path>/bootloader/tools/btl_bin_to_c_array.py -b <binary_file> -o <hex_file> -d <device>

    python <harmony3_path>/bootloader/tools/btl_bin_to_c_array.py -b <harmony3_path>/bootloader_apps_i2c/apps/i2c_bootloader/test_app/firmware/sam_d20_xpro.X/dist/sam_d20_xpro/production/sam_d20_xpro.X.production.bin -o <harmony3_path>/bootloader_apps_i2c/apps/i2c_bootloader/host_app_nvm/firmware/src/test_app_images/image_pattern_hex_sam_d20_xpro.h -d samd2x