HELP!.. I’m playing around with trying to get two I2C sensors found using an I2C scanner and was having no joy… then all of a sudden my Xenon ‘died’. No LED, no power through my USB meter, nothing. The CHG orange LED does flash when I plug in a USB lead but nothing happens…
What exactly i was doing was i had a temperature sensor on SDA/SCL, address found by I2C scanner. It published fine, all was well there.
Then I added a Temperature and Humidity sensor to D2/D3, which wasn’t found by t he scan.
The Temperature and Humidity sensor was found on SDA/SCL.
No combination of both was found, only what was on SDA/SCL.
Then it just died.
What sensors and how were they wired?
If the boards happen to have pull-ups to 5V that would at least pose the risk of damaging the I2C interface on the Xenon since that is only 3.3V tolerant.
I am having the exact same problem …My Xenon went into a hard fault and the only way to recover it was to USE it in DFU mode flashing yellow then I flashed tinker-0.9.0-xenon.bin and it says flash success then the device goes dark and the only way to see it is to put it in DFU Mode any ideas ??