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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

## Downloading the host script

To clone or download the host tools from Github,go to the bootloader repository and then click Clone button to clone this repo or download as zip file. This content can also be download using content manager by following these instructions

### 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 CAN 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_can/apps/can_bootloader/test_app/firmware/sam_d20_xpro.X/dist/sam_d20_xpro/production/sam_d20_xpro.X.production.bin -o <harmony3_path>/bootloader_apps_can/apps/can_bootloader/host_app_nvm/firmware/src/test_app_images/image_pattern_hex_sam_d20_xpro.h -d samd2x