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Can I use the Flight MCUs second UART to talk to serial devices other than the USB-to-Serial converter and MHX transceiver?

April 26, 2017converter Devices flight mcu mhx serial talk UART usb-to-serial

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Can I use the Flight MCUs second UART to talk to serial devices other than the USB-to-Serial converter and MHX transceiver?

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Yes. When neither of these on-board interfaces is enabled, you can talk to other serial devices. You must ensure that when either the USB-to-serial converter or the MHX transceiver is enabled, your other serial devices are disabled (tri-state / hi-Z) on the UART’s receive data pin.