Let’s look at USART module in pic microcontroller (uart module).

I’m going to move in two ways:

1. Using existing functions from a hi-tech compiler.

2. Writing my own functions.

USART = UART = SCI – the universal data transmitting/receiving protocol, which can work in synchronous and asynchronous modes. We pay attention to the second mode at the moment, this one is used for communications mostly.