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    [SIM800L] I want to release HardwareSerial2 for other high frequency sensor. Is there any why can switch physical connection between GPIO?

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    • 天
      天上的桥
      last edited by

      Hello everyone
      I want to use the SIM800L module for IoT sensor.

      There have 2 HardwareSerial on M5Stack’s board,
      but, I heard about HardwareSerial0 has been used for USB(typeC).
      So,I want to switch GPIO16/17(U2) to GPIO26/36(SoftwareSerial).

      I heard about I don't need to change physical connection.
      The esp32 can change GPIO position, only use software.
      Is that possible?
      How can I do that? Change the M5Stack.h?

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