Interfacing with Microcontrollers power point PRESENTATION Green university Bangladesh #sazidzamil
A microcontroller is a compact, integrated computer chip that functions as a central processing unit for specific control applications. It combines a processor, memory, and input/output peripherals in one package
Devices that connect to and expand the functionality of a computer system.
They can be external or internal, providing additional capabilities beyond the core computing functions
GPIO (General-Purpose Input/Output) Pins:
Function: GPIO pins are versatile and can be configured as either input or output. They serve as the most basic means of digital communication between microcontrollers and peripherals.
Usage: GPIO pins are commonly used to read digital signals (e.g., button presses) and control digital devices (e.g., LEDs, relays) by setting the pins high (logic level 1) or low (logic level 0).
I2C (Inter-Integrated Circuit):
Function: I2C is a multi-master, multi-slave, and bidirectional serial communication protocol that uses only two wires (SDA and SCL).
Usage: I2C is well-suited for connecting various peripherals, including sensors, real-time clocks, EEPROMs, and displays, to microcontrollers. It enables efficient data transfer between devices on the same bus.
UART (Universal Asynchronous Receiver-Transmitter):
Function: UART is a popular asynchronous serial communication protocol used for point-to-point communication between a microcontroller and a peripheral.
Usage: UART is often employed for interfacing with devices like GPS modules, Bluetooth modules, and serial communication with computers. It relies on transmit (TX) and receive (RX) pins for data exchange.
Home automation systems enable control and automation of household devices, such as lights, thermostats, security cameras, and door locks.
Interfacing Role: Microcontrollers interface with sensors to automate tasks.
For example, using GPIO pins to control relays for lights, I2C or SPI for communication with environmental sensors, and UART for communication with smartphone apps.
In conclusion, connecting peripherals to microcontrollers is a crucial part of building electronic systems for various purposes.
Microcontrollers are like the brains of these systems, and they need to talk to external devices like sensors, motors, and displays etc
4. Definition of a Microcontroller
4
A microcontroller is a compact, integrated computer chip that
functions as a central processing unit for specific control
applications. It combines a processor, memory, and input/output
peripherals in one package
Microprocessor and Microcontroller
5. Core Componentsof a Microcontroller
5
These components work together to allow the
microcontroller to perform its intended tasks efficiently
Central Processing Unit (CPU)
Memory
Input/Output (I/O) Ports
Timers and Counters
Peripheral Interfaces
Voltage Regulator
Interrupt Control
6. Understanding Peripherals
6
Definition of Peripherals:
Devices that connect to and expand the functionality of a computer system.
They can be external or internal, providing additional capabilities beyond the
core computing functions.
Types of Peripherals:
Sensor Actuators Communication Modules
7. 7
Interfacing Techniques
GPIO (General-Purpose Input/Output) Pins:
Function: GPIO pins are versatile and can be
configured as either input or output. They serve
as the most basic means of digital
communication between microcontrollers and
peripherals.
Usage: GPIO pins are commonly used to read
digital signals (e.g., button presses) and control
digital devices (e.g., LEDs, relays) by setting the
pins high (logic level 1) or low (logic level 0).
Fig: Generating PWM signals on GPIO pins of
Microcontroller: Controlling Servo Motor
8. 8
Interfacing Techniques
Fig: I2C temperature sensor
I2C (Inter-Integrated Circuit):
Function: I2C is a multi-master, multi-slave, and
bidirectional serial communication protocol that
uses only two wires (SDA and SCL).
Usage: I2C is well-suited for connecting various
peripherals, including sensors, real-time clocks,
EEPROMs, and displays, to microcontrollers. It
enables efficient data transfer between devices
on the same bus.
9. 9
Interfacing Techniques
UART (Universal Asynchronous Receiver-
Transmitter):
Function: UART is a popular asynchronous
serial communication protocol used for point-
to-point communication between a
microcontroller and a peripheral.
Usage: UART is often employed for
interfacing with devices like GPS modules,
Bluetooth modules, and serial communication
with computers. It relies on transmit (TX) and
receive (RX) pins for data exchange.
Fig: UART Bluetooth module interference on GPS signal
10. 10
Examples and Applications
Smart Home Automation
Home automation systems enable control and
automation of household devices, such as lights,
thermostats, security cameras, and door locks.
Interfacing Role: Microcontrollers interface with
sensors to automate tasks.
For example, using GPIO pins to control relays for
lights, I2C or SPI for communication with
environmental sensors, and UART for
communication with smartphone apps.
Smart Home Automation : MICROCONTROLLER CIRCUIT WITH
PHERIPHERALS
11. Conclusion:
11
In conclusion, connecting peripherals to microcontrollers is a crucial part
of building electronic systems for various purposes.
Microcontrollers are like the brains of these systems, and they need to
talk to external devices like sensors, motors, and displays etc
