Flasher Hub - Troubleshooting

When running into unexpected behavior when working with Flasher Hub, a few steps and guidelines can be useful to track down and fix the unexpected behavior.

Symptoms

Programming failure

Failure when programming via Flasher Hub can occur for a variety of reasons. The reasons can be grouped as follows:

• Connection-related
• Target-related
• Project-related
• Programmer-related

The following steps can help to locate the source of error.

Connection-related

1. Directly connect Flasher Compact with Flasher Hub without any USB hub between.
2. Use a known-to-work USB cable to connect Flasher Compact with Flasher Hub.
3. Ensure a stable and direct connection between Flasher and target hardware.
4. Ensure the target is supplied with sufficient power. Flasher can (optionally) provide a voltage of 5V for UM08001_J-Link_/_J-Trace_User_Guide#Target_power_supply target supply.
5. Double-check the target connection and ensure every required target interface pin is connected to its respective Flasher target connector pin.
6. Remove any adapters, resistors, capacitors or other components between Flasher and target hardware, if possible.
7. Use professionally manufactured cables instead of flying wires to connect to the target connector, if possible.

Target-related

1. Use a known-to-work target hardware reference. We recommend to use an evaluation board for this purpose, if possible

Project-related

1. Make sure to generate a project using the latest version of U-Flash or J-Flash
   • We continuously improve and update our software. As such, older version may contain bugs that are already fixed in the latest version.
2. Double check all project settings to ensure that they are configured as necessary. In case of doubt, consulting the developer of the target firmware application may help. During target firmware development, the developer(s) will have had to program and debug the target, most likely. As such, the developer(s) may be familiar with necessary configuration parameters to allow programming.
3. Reduce the target interface speed
   • The max. working target interface speed is limited by the chip design as well as the target connection setup. Long target connection wires can lower the max. working target interface speed.

Programmer-related

1. Exchange the Flasher Compact in use with a different unit
2. Disconnect any other Flasher Compacts from Flasher Hub
3. Disconnect Flasher Compact from Flasher Hub completely, directly connect it to a PC and check if it works in stand-alone mode, outside of Flasher Hub
4. For target devices that are available in J-Flash, only:
   • Disconnect Flasher Compact from Flasher Hub completely, directly connect it to a PC and check if it works in PC-based mode, outside of Flasher Hub

Support

If the above instructions did not improve the behavior of Flasher Hub, you may contact us for technical support.
For more information, refer to Technical Support.

Note:
In order to qualify support, Flasher Hub and its connected units should be registered. For more information, refer to Flasher Hub - Registration