Wow, that's a strange one - are you using up to date firmware?
With the UART, you're supposed to subscribe to get notifications - and then you're sent a notification when the output data on the UART changes.
It's possible that by actually reading the UART characteristic when it's not expected that you'll read it it's triggering the error you're getting?
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Wow, that's a strange one - are you using up to date firmware?
With the UART, you're supposed to subscribe to get notifications - and then you're sent a notification when the output data on the UART changes.
It's possible that by actually reading the UART characteristic when it's not expected that you'll read it it's triggering the error you're getting?