Can I clarify something – are the only lines needed for h/w flow control on the UART for the xE910 modules CTS and RTS?
Should DTR/DSR be connected? (Our existing drivers don’t support these lines anyway)
RTS/CTS lines are enough for hardware flow control however DTR and DSR can be used for other useful things, make a review of them simply looking in the AT Commands Reference Guide doc.
Thank you Cosmin – that is very helpful. Will look to connect these to GPIO pins.
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