DESIGN AND IMPLEMENTATION OF ONLINE DACS USING CORTEX M3 CORE WITH ETHERNET

By

R.SUSHMA CHOWDARY ( 10E51A0485) S.UMAMAHESHWAR ( 10E51A0494) V.HAREESH ( 10E51A04B1

Under the esteemed guidance of

Mr.khamruddeen shaik M-Tech

INTRODUCTION

The system was designed for HVAC (heating, ventilating and air conditioning) applications.

The proposed project is one such attempt of designing online data acquisition and controlling system using Cortex-M3 core.

In this project we will develop Ethernet device drivers for Cortex-M3 core to transmit the monitored sensor data to internet.

The System can complete the remote monitoring and maintenance operations of equipment through the network using Web browser.

To implement driver in order to interface 2x16 JHD162A LCD.

To implement driver for a 128x64 graphical LCD.

Allowing the authenticated user(s) to configure ADC.

The real time analog voltages are converted into corresponding digital

values using the ADC pins inbuilt in LPC 1768 Cortex M-3 and transfer

them to the internet through Ethernet.

REQUIREMENTS HARDWARE USED: ARM Cortex-M3 LPC1768 Header board Sensors: Temperature(LM35),Humidity, Gas Motors Driving IC[L293D],DC Motors 16x 2 LCD & 128x64 Graphical LCD USB-Power Supply Adapter

SOFTWARE TOOLS: Keil Uvisoin 4 IDE Flash Magic Proteus 7.8i Programming language: C, Embedded C

04/19/2023 1602-11-744-007

BLOCK DIAGRAM

ARM CORTEX M3

Three distinct profiles of the

ARMv7 architecture

A profile for sophisticated, high-

end applications

R profile for real-time system

M profile for cost-sensitive and

microcontroller applications.

It is first ARM processor based

on the ARMv7-M architecture

04/19/2023 1602-11-744-007

LPC1768 FEATURES Operating frequencies of up to

100 MHz 512 kB on-chip flash

programming memory 64 kB of SRAM Eight channel General Purpose

DMA controller (GPDMA) Ethernet MAC with RMII interface

and dedicated DMA controller 70 General Purpose I/O (GPIO)

pins with configurable pull-up/down resistors

4 - UARTs 3 - I2C 1 - I2S 2 - SPI 2 - CAN

12-bit/8-ch Analog/Digital Converter (ADC) with conversion rates up to 200 kHz

10-bit Digital-to-Analog Converter (DAC)

Four general purpose timers/counters

Standard JTAG test/debug interface

6 – PWM Outputs for motor control.

I/O supply voltage (V) – 3.3V CPU supply voltage (V) – 3.3V

04

/19

/20

23

16

02

-11

-74

4-0

07

TILL WHAT WE DID?

Till now we learn the programming what we are used in

this project using keil s/w. C-language and EMBEDDED-C.

coming to the hardware we did for the ARM Cortex-M3 LPC1768

Header board we connect the 16*2 LCD display as shown in the below

circuit.

At present we are doing our project circuit hardware part in

proteus s/w.

16x2 LCD Interfacing with LPC1768

Thank You

Queries???