This article explains how to enable and use Android Debug Bridge (ADB) debugging on Elo Android 7.x devices, including I-Series 2.0, PayPoint Plus for Android, and PayPoint for Android Rev B.

Overview

This guide covers the following:

• ADB debugging over IP (Ethernet or Wi-Fi)
• ADB debugging over USB and its limitations
• Required cables and port locations

A host computer with ADB tools installed is required.

Recommended Method: ADB over IP

Elo recommends using ADB over IP. This method does not require additional cables and avoids hardware limitations.

Steps

1. Connect the Elo device to the network:
   • Use Ethernet or Wi-Fi
   • Ensure the device is on the same network as your computer
2. Open Settings:
   • From EloView mode: Press Home + Power, enter password, go to Apps > Settings
   • From Android Home mode: Open Settings directly
3. Enable Developer Options:
   • Go to Settings > About Phone
   • Tap Build Number seven times
   • You will see: "You are now a developer"
4. Enable USB Debugging:
   • Go to Settings > Developer Options
   • Turn on USB Debugging
5. Find the device IP address:
   • Go to Settings > About Phone > Status
   • Note the IP address

6. Connect from your computer:

   adb connect <device_ip_address>
7. On the Elo device, tap Allow when prompted to authorize the connection.

8. Verify the connection:

   adb devices
   adb shell

Alternative Method: ADB over USB

ADB over USB is supported but not recommended for most use cases.

These limitations are due to the Qualcomm 625 platform, which supports only a single active USB connection.

Steps

1. Ensure no USB cable is connected to the device.
2. Open Settings (same steps as above).
3. Enable Developer Options:
   • Go to Settings > About Phone
   • Tap Build Number seven times
4. Enable debugging:
   • Go to Settings > Developer Options
   • Turn on USB Debugging
   • Enable Switch USB to device mode
5. Connect the USB cable between the Elo device and your computer.

6. Verify the connection:

   adb devices

Cable and Port Requirements

I-Series 2.0

• ADB Cable: USB Type-A to Type-A
• Fastboot Cable: USB Type-A to Type-A
• Port Location: Type-A USB port

PayPoint Plus for Android / PayPoint for Android Rev B

• ADB Cable: Mini-USB
• Fastboot Cable: Mini-USB
• Port Location: Bottom of unit near AC power input

Summary

• Use ADB over IP whenever possible
• Use ADB over USB only for software debugging
• Be aware that USB debugging disables peripheral and Ethernet functionality