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Note I am deliberately answering my own question There are lots of detailed guides out there; this is an overview of the key points particularly with respect to using a Raspberry Pi as the host. Take apart the case and solder wires to the TX, RX and boot_sel2 soldering pads, and make an earth connection somewhere. Ensure the Raspberry Pi is not trying to ...


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Found the answer to my own question. The Pi UART is by default set to echo mode. Hence the echo behaviour! This presumably reflects its original purpose of working as a tty console. Echo is required for normal console behaviour. Fix is simply to reconfigure the UART by disabling the echo. Worked as expected after I'd configured with: stty -F /dev/...


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You directly connected Pins 8 and 10 to the USB-To-TTL-Adapter? That's a bad idea that can fry your Pi. The Pi runs at 3.3V (including its UART-Pins), Uart power level is typically between 5 and 20V. You need to use a voltage translator or a board specifially designed to convert the Raspberry Pi's Uart Pins to TTL level. This may, in fact, result in the ...


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