How to connect HMI from host machine to Android SDL - CustomSDL/sdl_android_launcher GitHub Wiki

Note: Emulator or physical device with SDL should already be started at this point

  1. First of all, on your host machine, locate the ADB tool which is by default in your SDK folder:
Android/Sdk/platform-tools
  1. Run the following command from terminal:
./adb forward tcp:8087 tcp:8087

This will redirect TCP port 8087 from your host machine to 8087 port of your emulated device.

https://developer.android.com/studio/command-line/adb#forwardports

This is a default port for HMI to communicate with SDL. It is specified in Flags.js from HMI side, and in ServerPort parameter in ini file from SDL side. Note that SDL has the role of server and uses bind(), and HMI is a client and uses connect()

Note If you have more than one device connected to your host machine, you should specify -s key with the ID of a certain device to forward the port to:

// Get list of device IDs
./adb devices -l

// Forward port
./adb forward -s <paste_id_from_previous_command> tcp:8087 tcp:8087

  1. On your host machine, run HMI as usual (go to sdl_hmi folder and run in terminal chromium-browser index.html). If forwarding is working as expected then HMI will be able to connect to SDL on emulator.

  2. Once HMI is started, you should see JSON commands in the console output of browser (can be opened by pressing F12). If you see following, then SDL has been successfully connected to the HMI:

hmi_connects_to_sdl

Note: Will be deprecated in the future since a separate APK for HMI (SharpHMI) is available