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Published 20 hours ago • verified publisher icon GrumpyOldPizza

Disable USB pullup when stopping USB

Open matthijskooijman opened this issue 3 years ago • 0 comments

It turns out that stopping the USB peripheral does not automatically reset this pullup, so stopping USB (e.g. through USBDevice.detach()) would let the pullup enabled, making the USB host think the board was still connected (but any subsequent communication would fail). Additionally, this would use around 300μA of current.

This is a bug in the USB HAL used. This commit backports a small change from the HAL v1.11.3 to fix this.

This fixes #171

matthijskooijman avatar Mar 01 '21 16:03 matthijskooijman