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E840-DTU device unresponsive problem [Copy link]

E840-DTU device unresponsive problem

In channel 1, I set up the MQTT protocol to communicate with Alibaba Cloud. As shown in the figure below, linkA lights up, but after I saved it and restarted it from a breakpoint, I couldn't enter the configuration. The port check was intact, and I tried several baud rates, including 9600, 115200, etc., but the device still didn't respond. The reload button on the back of the device didn't work either. I hope you can give me some suggestions if you encounter this situation.

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Cut off the power and try all the baud rates. If it still doesn't work, you can only re-flash the factory firmware and see.  Details Published on 2022-10-7 00:51
 

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Cut off the power and try all the baud rates. If it still doesn't work, you can only re-flash the factory firmware and see.
This post is from RF/Wirelessly
 
 

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