<![CDATA[M5CoreInk RTC doesn't wakeup when connected to USB]]>I have a modified version of the RTC_Clock example and it doesn't wakeup after an M5.shutdown(55) when it is connected to USB. If I disconnect the USB cable, the sketch works.

The same behavior when I use the unmodified example. The RTC_Wakeup example also exhibits the same behavior.

This makes it impossible to use Serial.print debug statements.

Happy to include my modified sketch when I have the privileges to do so.

]]>https://community.m5stack.com/topic/7001/m5coreink-rtc-doesn-t-wakeup-when-connected-to-usbRSS for NodeSun, 17 May 2026 18:42:16 GMTWed, 20 Nov 2024 14:11:33 GMT60<![CDATA[Reply to M5CoreInk RTC doesn't wakeup when connected to USB on Thu, 21 Nov 2024 21:43:38 GMT]]>Hello @bsmorgan

well, M5CoreInk cannot shutdown in the first place when running from USB - see schematic here.

A modified USB-C cable (with 5 V line cut) might help with debug statements in this case.

Thanks
Felix

]]>https://community.m5stack.com/post/27120https://community.m5stack.com/post/27120Thu, 21 Nov 2024 21:43:38 GMT