Editing Universal asynchronous receiver-transmitter (section)

==Emulation==

Since the UART's [[communication protocol]] is simple, it can be [[emulated]] by [[bit banging]] [[General-purpose input/output|GPIO]] [[Lead (electronics)|pins]] in [[software]] on modern [[microcontrollers]] (e.g. [[Arduino]]<ref>{{Cite web |date=2022-10-05 |title=SoftwareSerial Library {{!}} Arduino Documentation |url=https://docs.arduino.cc/learn/built-in-libraries/software-serial |url-status=live |archive-url=https://web.archive.org/web/20230601225136/https://docs.arduino.cc/learn/built-in-libraries/software-serial |archive-date=2023-06-01 |access-date=2023-06-10 |website=[[Arduino]]}}</ref> or [[Teensy]]<ref>{{Cite web |last=Stoffregen |first=Paul |title=AltSoftSerial Library, for an extra serial port |url=https://www.pjrc.com/teensy/td_libs_AltSoftSerial.html |archive-url=https://web.archive.org/web/20230322175935/https://www.pjrc.com/teensy/td_libs_AltSoftSerial.html |archive-date=2023-03-22 |access-date=2023-06-10 |website=www.pjrc.com}}</ref>), or on programmable I/O [[Finite-state machine|state machines]] (e.g. [[Raspberry Pi Pico]]'s PIO<ref>{{Cite web |date=2023-01-24 |title=Raspberry Pi Pico Serial Communication Example(MicroPython) |url=https://electrocredible.com/raspberry-pi-pico-serial-uart-micropython/ |archive-url=https://web.archive.org/web/20230603201653/https://electrocredible.com/raspberry-pi-pico-serial-uart-micropython/ |archive-date=2023-06-03 |access-date=2023-06-10 |website=Electrocredible |language=en-US}}</ref><ref>{{Cite web |last=McKinney |first=Josh |date=2022-11-05 |title=Programmable IO (PIO) for MIDI with the Rasberry Pi Pico |url=https://www.joshka.net/2022/11/pio-for-midi-with-raspberry-pi-pico |url-status=live |archive-url=https://web.archive.org/web/20230404125731/https://www.joshka.net/2022/11/pio-for-midi-with-raspberry-pi-pico |archive-date=2023-04-04 |access-date=2023-06-10 |website=joshka.net}}</ref> or [[NXP Semiconductors|NXP]]'s FlexIO<ref>{{Cite web |last=Krenek |first=Pavel |date=2015 |title=Emulating UART by Using FlexIO |url=https://www.nxp.com/docs/en/application-note/AN5034.pdf |url-status=live |archive-url=https://web.archive.org/web/20221005225314/http://www.nxp.com/docs/en/application-note/AN5034.pdf |archive-date=2022-10-05 |access-date=2023-06-10 |website=[[NXP]]}}</ref>).