Power not working between CoreS3 or CoreS3 SE <--> LAN module with PoE or RS232 module
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I have a problem with the power supply for CoreS3 and CoreS3 SE. It is always manifested in all 3 cases just by flashing the backlight on the display every approx 3-5 seconds.
My power supply is not working when using:
- PoE using "LAN Module W5500 with PoE V12"
- DC jack power supply 9 - 24V on "LAN Module W5500 with PoE V12"
- DC jack power supply 9 - 24V on RS232 Module 13.2 with DB9 Male Connector (M131).
I tried 2 different pieces of "LAN Module W5500 with PoE V12" and also CoreS3 and CoreS3 SE but it behaves the same.
In the documentation on docs.m5stack.com it is not mentioned anywhere that the LAN module with PoE or RS232 module should not be compatible with CoreS3 or CoreS3 SE.
What is wrong with this?
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Hello @oldrichsveda
hmm, works for me. Tested with M5CoreS3 and PoE LAN Module.
What code is running on your M5CoreS3? Arduino or UIFlow2?
The effect you are describing sounds like VBUS (this is where the 5 V are coming in from the PoE LAN module) is getting switched from input (default) to output which is equivalent to power off. Which then would make VBUS an input again and the cycle starts over.
Thanks
Felix -
@felmue Both are UiFlow2, SE version arrived today, so factory firmware. Do you have any suggestions?
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Hello @oldrichsveda
Factory firmware (aka CoreS3 UserDemo v0.6) is not the same as UIFlow2 v2.2.1 - please check M5Burner.
I only have an M5CoreS3, but I can confirm your findings: when I install and run Factory firmware I get the effect you are describing. However when I install UIFlow2 v2.2.1 it works for me.
So my suggestion is to use M5Burner and install the latest UIFlow2 v2.2.1.
Thanks
Felix -
@felmue You're absolutely right about VBUS. When I flashed the example firmware from the Arduino IDE, the power supply worked normally. However, the factory firmware did not. How the hell is it possible that such a thing isn't described anywhere in the documentation? Thank you, you really helped me a lot.
