Overview of the UART protocol
One of the most fundamental and widely used protocols is UART. Whether you’re debugging hardware or enabling communication between a microcontroller and peripherals, understanding UART is crucial. Let’s delve into the workings of this protocol.
What is UART?
UART is a hardware communication protocol that operates using asynchronous serial communication, allowing for adjustable data transmission speeds. The “asynchronous” nature of UART means it doesn’t require a clock signal to align the transmission of bits between the sender and receiver. Instead, both devices must agree on a specific baud rate, which dictates the speed at which data is exchanged. Let’s take a look at the interface.
The interface
The UART interface employs two wires for communication: TX and RX. To establish a connection between two devices, we simply connect the TX pin of the first device to the RX pin of the second device, and the...
