proton basic serial interrupts in operating

Proton Basic Serial Interrupts In Operating Series Of D

As you might have noticed, it takes 4-clocks to send the 4-Bit data from the transmitter to the receiver.

Youll get to know what is the UART serial communication protocol How does it work What are the typical applications for UART Well also discuss in detail the process of creating the required firmware to drive the UART module in our PIC Microcontrollers.

And finally, create a simple communication application MCU-To-MCU and test it out.

Its going to be a very long read with a massive amount of information, So lets get started You may also need to check out the SPI (serial peripheral interface) tutorial.

Check it out and maybe keep it bookmarked as a guide for future work You may also need to check out the I2C Bus tutorial.

Component Name Buy On Amazon.com 2 PIC16F877A Add 2 BreadBoard Add 8 LED Add Add 1 Resistors Kit Add Add 1 Capacitors Kit Add Add 1 Jumper Wires Pack Add Add 1 USB-TTL Converter or FTDI Chip Add Add 1 LM7805 Voltage Regulator (5v) Add 1 Crystal Oscillator Add 1 PICkit2 or 3 Programmer Add 2 9v Battery or DC Power Supply Add Add Add The Prototyping Board Setup Introduction To Serial Communication In Embedded Systems, Telecommunication, and Data Transmission applications, Serial Communication is known to be the process of sending data one bit at a time (bit-by-bit) sequentially, over the serial bus.

It takes a complete clock cycle in order to transfer each bit from an end to the other.

Conversely, parallel communication is known to be the process of sending several bits, even bytes, as a whole only in a single clock cycle.

However, even if you transfer fewer data per cycle with a serial transmission, you can do it at much higher frequencies which results in higher net transfer rates than of the parallel communication.

The Fundamental Concepts There do exist many serial communication protocols, each of which is working in a different way.

However, it turns out to be some similarity that they do share in common.

Frankly speaking, serial communication protocols have Shift Registers somehowsomewhere in their hardware implementation as the working-horse (core).

Shift registers are used to shift out the data to be transmitted bit-by-bit each clock cycle.

So, lets dig deeper into a shift register in order to build-up a complete understanding for what is actually happening at the Register(low)-Level.

Here is a graphical animation that demonstrates how does a shift register work internally.

As you might have noticed, the data input (0s and 1s) is being shifted from the input pin to the output end at bit-0.

It takes only 1-clock to transfer a single bit, which means it takes 8-clocks for a single byte transfer.

Proton Basic Serial Interrupts In Operating Series Of D

For the same of simplicity, well represent the shift register as a single block instead of a series of D-Flip-Flops as shown above.

Well, now you should know how shift registers are actually working.

Frankly speaking, serial communication is as simple as connecting a couple of shift registers together Connecting the data output of a shift register to be the data input of the other shift register enables us of sending digital data serially from an end to another In the following animation, Im connecting a couple of 4-Bit shift registers.

One at the transmitter device and the other at the receiver device.

The serial bus consists of a couple of wires (data, and clock).