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USART Rx interrupt NOT Work

Question asked by sohaeng.lee on Oct 17, 2017
Latest reply on Oct 21, 2017 by Clive One


I tested three devices all day long today.
All devices are connected to the USART, but the incoming interrupt does not work at all.
A program that connects the Lo Ra modules, GPS modules, and wifi modules to USART 1 and outputs the data sent to USART 2.
However, the Rx Interrupt does not work at all.

Attach the project file.