Datasheet

Troubleshooting

CPLAYBOOT Does not Appear on Windows 10;

"ARM7TDMI" Error in Arduino

Some people have had difficulty with the Circuit Playground Express on Windows 10 after installing the Arduino IDE

and the Arduino Board Support Packages Arduino SAMD and/or Adafruit SAMD. The problem is that these Board

Support Packages install unnecessary drivers on Windows 10. This causes two problems:

1. CPLAYBOOT does not appear when double-clicking the reset button on the board.

2. Attempting to upload an Arduino program generates an error like:

An error occurred while uploading the sketch

chipId=0x30455553

Unsupported ARM7TDMI architecture

We are working with Arduino to update these packages to fix the problem. In the meantime, the fix is to uninstall the

bad drivers. Three unnecessary drivers are installed, one for CPLAYBOOT, one for CIRCUITPY, and one for Arduino

programs running on the Circuit Playground Express. You should uninstall all of them.

In all three cases, you open the Device Manager, by right-clicking on the Start menu and choosing Device Manager.

Then open the Ports section in the new window. You'll see something like the the listing below. The wording will vary,

but it will include "Adafruit Circuit Playground Express".

You want to uninstall the driver for that device. Right-click on the device, choose Uninstall Device, and when the dialog

box comes up, check the box that says "Delete the driver software for this device". and click OK. It will look

something like this:

You do this three times, following the procedure above each time.

1. First, double-click the reset button, so all the NeoPixels turn green. Normally CPLAYBOOT would appear, but if the

incorrect driver is installed, it will not appear. Then unplug and replug in the board.

2. Double-click the reset button again. This time CPLAYBOOT should appear. Upload an Arduino program to the board,