Dec 11, 2016 · Most of the time RS-232 and UART come together in serial communication theories. Are they both the same? From my readings I concluded UART is a hardware form of the RS-232 protocol. Am I correct?

Aug 14, 2012 · A UART is a "Universal Asynchronous Receiver Transmitter" - really the name for a functional block often used to implement a "serial port" with some flexiblity to word length, rate, and start/end conditions.

Dec 11, 2016 · UART = Universal Asynchronous Receiver/Transmitter. It is the basic chip (or virtual function in a microcontroller) which encodes the data bits serially into a standard format with a start bit, stop bit (s), speed, etc. But "UART" is only PART of what "RS-232" is.

Aug 13, 2015 · A UART is the peripheral that implements a serial connection that follows the scheme described at the start. It outputs a digital signal, usually using CMOS or TTL levels, and another chip can be used to bring it to RS-232 or RS-485 levels.

May 15, 2012 · Real RS232 has a voltage swing of more than 10 Volt between mark and space state. And the 147 feet is for 19200 baud only. OP is talking about 3V3 UART and 115200 to 921600 baud: This will work only with relatively short cables.

As I have understood the main difference between UART and RS-232 is voltage levels. And with PIC I cannot supply proper voltage level that is required for RS232. Because of that UART to RS232 converter's look like a must. (i.e. MAX232) I have two questions. Using UART to RS232 chips is the only option in this case? Are there any alternative ways?

Dec 21, 2024 · In RS232 serial communication as pictured below how does one ensure the bit stream is always read at the start/stop bits? I’m looking at this waveform and considering a case where two consecutive differing characters have start/stop bits in them n clocks apart and could be mistaken for start/stop shifting the entire stream.

Nov 23, 2023 · Some people mix RS-232 physical layer with UART, because technically all RS-232 ports were implemented with UARTs, and when you just want the UART many chips are still called 232 like FT232 because it is a USB UART which can be used to implement an RS-232 port. Both those modules are just 3.3V TTL/CMOS level UART modules.

Jun 16, 2021 · This is a programmable power supply, an IPS-405. I have determined from the image above, which is all that is available in the manual, that I need a RS232 to USB converter (null modem) that works at 12 Volts, but I haven't been able to find any, or there is a lot of confusion regarding this converters.

You need to know the full details: the speed, if there is there a start bit, the number of data bits, if there is a stop bit and if there is a parity bit. This should be a function of how the UART in the microcontroller is configured. If the Rigol scope doesn't have a serial decode option (many DSOs do) you can use X-cursors to aid in the decoding.