So, I'll end up buying an adapter or level shifter either way it seems. HID->COM RS232 Adapter", and shows in Windows as a "USB to Serial Mouse" adapter (or something similar). On further inspection, the "USB Serial Adapter" I am using, is a "Cypress Semiconductor Corp. Thanks for your information RE this Alfihar, I think I have this set up with the aforementioned RS232 connector. You might need to change the serial port settings, though hopefully it outputs at the standard 9600/8N1 (9600 baud, 8 data bits, No parity bit, 1 stop bit).
I would also use the PuTTY software to try and read from it on your PC. Note that for this to all work you'll almost certainly need a null modem/crossover serial cable (the transmit from the alarm system connects to the receive of the serial dongle), not a straight through cable (like the one connecting the alarm system to the printer).
#Qt5 serial port config raspberry pi drivers
So you might need to find some drivers for your USB serial adapter first. You'll need to get the serial adapter to show up as a COM port on Windows, or as /dev/ttyUSBx under Linux. Most serial printer outputs I've come across will output plain ASCII text (human readable),īut this might not always be the case, hopefully this one does.
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