user manual for atmega evaluation kit

MICROCONTROLLER BOARDS

AVR Evaluation Board

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Contents Contents ...................................................................................................................................................... 2

CHAPTER 1: Introduction ............................................................................................................................ 3

1.1 WELCOME.......................................................................................................................................... 3

1.2 AVR EVALUATION BOARD FEATURES ................................................................................................ 3

1.3 AVR EVALUATION HARDWARE .......................................................................................................... 4

1.4 SAMPLE DEVICES ............................................................................................................................... 5

One FLASH device is included. The device types may change, but will generally include ATMEGA 40-

pin DIP devices. ....................................................................................................................................... 5

1.5 SAMPLE PROGRAMS.......................................................................................................................... 5

1.6 AVR EVALUATION BOARD LAYOUT ................................................................................................... 5

CHAPTER 2: Hardware Details .................................................................................................................... 6

2.1 SOCKETS ............................................................................................................................................ 6

2.2 CONFIG-I SWITCH .................................................................................................................................. 6

2.3 POWER SUPPLY ..................................................................................................................................... 7

CHAPTER 3: Installation Notes .................................................................................................................... 7

3.1 INSTALLING CODEVISIONAVR COMPILER ......................................................................................... 7

3.2 CREATING A NEW PROJECT IN CODEVISIONAVR ............................................................................ 11

3.3 OPEN AN EXISTING PROJECT ........................................................................................................... 16

3.5 PROGRAMMING THE ICS ................................................................................................................. 18

3.6 RUNNING THE PROGRAM ............................................................................................................... 19

3.7 POSSIBLE ERRORS ............................................................................................................................ 19

CHAPTER 4: Example Programs and Connections .................................................................................... 21

CHAPTER 5: Setting up HyperTerminal ..................................................................................................... 23


CHAPTER 1: Introduction

1.1 Introsuction

The AVR Evaluation Board can be used as a stand-alone board built with an in-circuit

USB programmer. Sample programs are provided to demonstrate the unique features of

the supported devices.

The AVR Evaluation Board Kit comes with the following:

1. AVR Evaluation Board

2. Sample devices (ATMEGA8535 or ATMEGA16)

3. CD-ROM, which contains:

a) Sample programs

b) AVR Evaluation Board Users Guide

Note: If you are missing any part of the kit, please contact our support executive

1.2 AVR EVALUATION BOARD FEATURES

The AVR EVALUATION board has the following hardware features:

1. 40-pin IC base socket.

2. +5V regulators for direct input from 9V, 500 mA AC/DC wall adapter

3. RS-232 socket and associated hardware for RS-232 interface.


4. ICSP Parallel Port Programmer with busy LED indication

5. One 5 K pot for devices with analog inputs.

6. Four push button switches for external interrupts and Reset.

7. Red power-on indicator LED.

8. Four 10 Pin FRC port termination

9. A 16 MHz crystal oscillator.

10. One 8 way Configuration DIP switch for multiple operation

11. Option to get power from USB Port

1.3 AVR EVALUATION HARDWARE


1.4 SAMPLE DEVICES

One FLASH device is included. The device types may change, but will generally include

ATMEGA 40-pin DIP devices.

1.5 SAMPLE PROGRAMS

The AVR EVALUATION Kit includes a CD-ROM with sample programs. These programs

may be used with the included sample devices. For each type of device (ATMEGA8535,

ATMEGA16), demo source code with compiled Hex file is provided.

1.6 AVR EVALUATION BOARD LAYOUT


CHAPTER 2: Hardware Details

2.1 SOCKETS

40 Pin ZIF socket is provided for the processor. So the Microcontroller can be removed

from the board easily. Mainly this socket is intended to use our development board as

programmer to program other ICs.

10 pin FRC box type connectors: Four Connectors can be found in AVR Evaluation board.

A 10 pin FRC cable is used to make connection with external circuits. The connection is

described as following,

Pins 1-8 are Data Pins. Pin 9 is VDD and the Pin 10 is GND. All 10 Pin FRC connectors will

follow the same rule.

2.2 Config-I Switch

SW5: 8 way Multifunctional switch for peripherals


DIP SWITCH PIN DESCRIPTION

PROG First 5 pins from left to right are used to program the IC.

Turning ON these pins permanently will not affect the function of the microcontroller

RX, TX RS232 receive and transmit pins. Turn ON these pins when doing RS232

communication

NC No connection

2.3 POWER SUPPLY

The external power can be AC or DC, with a voltage (9V, 1A output). The AVR

board produces +5V using an LM7805 voltage regulator, which provides supply to the

peripherals. Alternatively we can supply the power (+5V) from PC via USB cable.

Power supply is controlled through slide switch JP1.

CHAPTER 3: Installation Notes

3.1 INSTALLING CODEVISIONAVR COMPILER


1. Open up the user CD comes with AVR Microcontroller Board, Navigate to

CodeVision Folder

2. Double Click Setup.exe and Choose English and Click-> OK.

3. Click->Next


4. Select Destination Location: Click-> Next. (Or browse to another directory as you

wish).

5. Select Start Menu Folder: Click->Next. (Change the name if you wish).


6. Ready to Install: Click-> Install.

7. Click-> Finish


3.2 CREATING A NEW PROJECT IN CODEVISIONAVR

1. Double Click the CodeVisionAVR icon from desktop

2. Select File->New.

3. Check Project and Click-> OK.

4. Confirm: Click No

5. File Name: Give your own Project Name and Click Save.


6. Configure Project Wizard (Very Important while Creating Project)

7. If you already have a source code file, then Click Add. Select the file and Click open.


Else just skip this step and proceed to step8.

8. Click C Compiler Tab: Select the Chip ATMEGA8535. Enter 16.000000 MHz in Clock Text box.

9. Click After Build Tab: Tick the Program the Chip check box. You can see the

following window. From the window uncheck Preserve EEPROM or Press r. Click OK.


10. Create New C file, write source code and add this file to project (step 6 and 7).


11. Now the Project will look like the following. Click Compile the project. Here I

added an existing LED.C file to the project Proceed to 3.4. programmer settings.


3.3 OPEN AN EXISTING PROJECT

1. Double Click the CodeVisionAVR icon from desktop

2. Select FileOpen

3. Navigate to the Existing projects directory; select the project and Click Open.

4. Ensure your device atmega8535 and clock 16Mhz is selected in Project

Configure C compiler

5. Follow the settings for programmer.


3.4 SETTING UP THE PROGRAMMER FOR AVR EVALUATION

BOARD

1. First attach the AVR Microcontroller Evaluation Board with PC via Programmer

Cable. 2. Connect the 9V AC/DC Adapter with Evaluation Board or Give the supply via USB

cable. 3. Turn ON all the five PROG pins of CONFIG switch 4. Turn ON all the pins of ICSP DIP switch SW3. 5. Turn ON the Power. 6. Select Settings Programmer

7. Select Kanda Systems STK200+/300 and LPT1. (Choose the port that you have connected the Kit with PC).

8. Click OK.


9. These settings are the default settings for all the examples provided with ATMEGA Board.

3.5 PROGRAMMING THE ICS

1. Turn ON all the five PROG pins of CONFIG Switch

2. Create a project or open an existing project (see 3.2 or 3.3)

3. Build the project, now it will ask for programming the IC.


4. Click Program the chip

3.6 RUNNING THE PROGRAM

The Program will be started to run immediately after programming (burning) the

IC successfully. If not just press the reset switch once.

3.7 POSSIBLE ERRORS

Error 1: "Power supply on". If it does, follow the instructions below,

a) Ensure the CONFIG-II pin PROG is turned ON.

b) Ensure all the pins of ICSP DIP switch SW3 are turned ON.

c) Measure the voltage between VDD and GND pins of microcontroller. It should be ~5V

Error 2: "Settings | Programmer" error, If it does, follow the instructions below


a) Ensure you selected Kanda Systems STK200+/300 in Settings Programmer menu.

b) Ensure Printer Port is correctly configured. I.e. if you connected the programmer

cable in LPT2 But you have chosen LPT1 in settings, the port should be changed from

LPT1 to LPT2.

Error 3: CVAVR may throw "Verified Failed" error, due to the following

a) The AVR microcontroller is not properly placed in ZIF jacket.

b) Faulty microcontroller device, Replace it with new one.

If the error still retains check your windows firewall or antivirus software to allow

CodeVisionAVR, and do the following

4. Check the programmer cable

E.g. LPT25s pin 5 is connected with pin 1 of DB9 connector etc.

5. Replace the IC 74LS541 with 74HC541 or with new 74LS541.


HARDWARE PIN OUT

CONNECTIONS OUTPUT

INT0 PORTD.2

Connect Serial cable between USART

Section in the Board and PC.

Press INT0, INT1 and INT2 Push but-ton switches SW2, SW3 and SW4 The MessageINTxDetected...will

be displayed. In INTx, x is 0 or 1 or 2.

INT1 PORTD.3

INT2 PORTB.2

CHAPTER 4: EXAMPLE PROGRAMS AND CONNECTIONS

4.1 ADC

4.2 INTERRUPTS

4.3 USART

HARDWARER PINOUT CONNECTIONS OUTPUT

CH0(POT) PORTA.0

Burn the ADC program into

micro-controller.

Connect Serial cable etween

USART Section in the Board and PC.

Digital Values of all the POT channel will

be displayed in HyperTerminal

Adjust the POT ADC i/P R17 to see the

changes


HARDWARE PIN OUT CONNECTIONS OUTPUT

RX PORTD.0 Turn ON RX, TX pins of CONFIG Switch

Connect Serial cable between USART Section in

the Board and PC. Open HyperTerminal

Press RESET Once (If Necessary)

Type a character, Hello

World string will be re- turned from Board.

TX PORTD.1

4.4 USART with PRINTF

HARDWARE PIN OUT CONNECTIONS OUTPUT

RXD PORTD.0 Turn ON RX, TX pins of CONFIG Switch

Connect Serial cable between USART Section

in the Board and PC. Open HyperTerminal

Press RESET Once (If Necessary)

Type a character. The string

Hello World with PRINTF will be displayed.

TXD PORTD.1


CHAPTER 5: Setting up HyperTerminal

HyperTerminal is automatically installed under Programs Accessories,

1. Click Start Programs Accessories Communications HyperTerminal

Enter Name (e.g. Com1_9600) and choose any one ICON

2. Click the drop-down arrow by Connect Using COM1 Click OK


3. COM1 Properties, Port Settings

Bits per Second: select 9600 (or desired baud rate)

Data Bits: select 8

Parity: select None

Stop Bits: select 1

Flow Control: select none

Click OK

4. Now you get the HyperTerminal window.


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