Connection Conflicts with USB Debuggers

We’ve received reports of PC connections to our logic analyzer becoming unstable when a USB debugger is connected to the same PC. One such example is the ST-Link V2.

By connecting our Logic analyzer and USB debugger in a particular order, in addition to starting our Logic 2 app and the usb debugger’s particular IDE software in a particular order, users have found ways to stabilize the connection.

For example, a common workaround is described below for the ST-Link V2:

  1. Disconnect both the ST-Link V2 and the Saleae Logic analyzer from your PC
  2. Open the Logic 2 app
  3. Connect your Saleae Logic to your PC. The Logic 2 app should connect successfully to your Logic analyzer.
  4. Connect the ST-Link V2 to your PC

Other USB debuggers and IDE software that have been reported to conflict with our Logic analyzer are listed below:

  • Segger J-Link
  • Atmel JTAGICE3
  • Atmel-ICE
  • Atmel Studio

We’re currently tracking reports of this issue in the idea forum post here. Feel free to comment on the forum post if you’re running into the same issue.