UART Protocol

1. UART COMMUNICATION
Pins used in serial communication
TX - Transmit data pin is used to send data to remote device.
RX- Receive data pin is used to receive data from remote device.
GND- Ground pin is used to make common ground from both
power sources.

2. UART DATA COMMUNICATION
There is no clock signal to synchronize the output of bits from the
transmitting UART to the sampling of bits by the receiving UART.
Instead of a clock signal, UART adds start and stop bits to
the data packet.
Each packet contain 1 start bit, 5 to 9 data bits , an optional parity
bit, 1 or 2 stop bits.

3. UART DATA COMMUNICATION

4. UART DATA COMMUNICATION