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# 1.6.6 USB Device HID Bootloader Unified Host Script Help

Downloading the host script

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

Path of the tool within the repository is tools/UnifiedHost-*/UnifiedHost-*.jar

Version and Support information

- Refer to tools/UnifiedHost-*/readme.txt for information on versions and known issues if any

- UART Protocol is not supported in Harmony 3 using this tool

Description

- This host script should be used to communicate with the USB Device HID Bootloader running on the device

- It implements the Unified bootloader protocol required to communicate from host PC

- It sends the Normalized Hex File of the application to be bootloaded

Configuring and Using the Unified Host tool

- Double click on tools/UnifiedHost-*/UnifiedHost-*.jar file to launch the Host application

- Select the Device architecture and Protocol as shown below

- Select USB Protocol
  - Click on configure button and select the USB Device product ID. Example *3C

- Load the test application hex file to be programmed using below option

- Open the Console window of the host application to view application bootloading sequence

- Click on Program Device button to program the loaded test application hex file on to the device

- Following snapshot shows output of successfully programming the test application

Using Unified Host Tool in debugging mode

- On Windows:

  - Launch Windows Command prompt in tools/UnifiedHost-*/ directory

  - Run below command to launch Unified Host Application in debugging mode

        java -Djava.util.logging.config.file="logging.properties" -jar UnifiedHost-*.jar

- On Linux

  - For running Unified Host tool in debug mode on linux make use of MPLAB X's Java JRE

  - Launch Linux Command prompt in tools/UnifiedHost-*/ directory

  - Run below command to launch Unified Host Application in debugging mode

        /opt/microchip/mplabx/<MPLAB X Version>/sys/java/zulu8.40.0.25-ca-fx-jre8.0.222-linux_x64/bin/java -Djava.util.logging.config.file="logging.properties" -jar UnifiedHost-*.jar

- Once the tool is launched refer to steps mentioned above in Configuring and Using the Unified Host tool to program application hex

- You can see the logs during programming sequence on the command prompt

- Once done you can open the tools/UnifiedHost-*/app.log file and check for the programming sequence logs