avr dev brd user manual

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AVR Development Board

Package Contents:

Development Board

16*2 LCD (as per order)

ATMEGA16 microcontroller (as per order)

Xbee Module (as per order)



Features:

Supply Voltage: 7V to 15V DC

Powerful Atmega16/32 microcontroller supports On board features:

Motor Driver

Stepper Motor Driver

Four general purpose LEDs and Switches

16*2 LCD

Two seven-segment LED Display

5 Voltage Regulator

Sensor interface port (PORTA)

Programming interface(PROG)

POT for ADC

POT for LCD Contrast

Buzzer

Relay

MAX 232 with serial connector(DB9)

XBee interface provision

4*4 Keypad Matrix interface provision

Break-out of I2C, SPI, Display, Motor, Switch, LED, XBee



Pinout:

DC IN JACK: DC Input for Microcontroller.

Power enable switch: This is power enable switch to Turn ON or Turn OFF board.

Power LED: Board power indicator LED.

Sensor Port: Provision to connect 8 sensors, also facilitates the extern sensor to get +5V power from VCC and GND.(PORTA.0 to PORTA.7)

VOUT: Unregulated output.



General purpose switches: 4 general purpose switch which can be used as input, (in active low configuration).

General purpose LED: 4 general purposes LED (in active low configuration)

16*2 LCD interface: 16 pin male connector for connecting 16*2 LCD.

LCD Contrast potentiometer: To adjust the contrast of LCD.

Buzzer: onboard general purpose buzzer to generate audible tones.

Reset switch: to reset the microcontroller.

Programming interface: Programming pins of the microcontroller through male FRC connector.

SPI and I2C break-out.

Microcontroller PINOUT:

Peripheral connected Microcontroller PORT

SENOR 1 TO SENSOR 5 PORTA.0 TO PORTA.5

SENSOR 6/RELAY PORTA.6 SENSOR 7/BUZZER PORTA.7

LED1 TO LED4(ACTIVE LOW) PORTB.0 TO PORTB.3 SPI CONNECTOR PIN 6 PORTB.4 SPI CONNECTOR PIN 3 PORTB.5 SPI CONNECTOR PIN 4 PORTB.6

SPI CONNECTOR PIN 5 PORTB.7

LCD DATA PINS/ INPUT TO 7447

PC.0 TO PC.3

LCD ENABLE/ ENABLE OF 7 SEGMENT LED1

PC.4

LCD RS/ ENABLE OF 7 SEGMENT LED2

PC.5



SWITCH3(ACTIVE LOW) PC.6 SWITCH4(ACTIVE LOW) PC.7

RX/XBee DOUT PD.0 TX/XBee DIN PD.1

SWITCH1(ACTIVE LOW) PD.2 SWITCH2(ACTIVE LOW) PD.3

MOTOR 1 IN PD.4 MOTOR 2 IN PD.5 MOTOR 3 IN PD.6 MOTOR 4 IN PD.7

Active Low LED: LEDs are connected in Active LOW configuration so to turn ON the LED user has to apply logic low (0) signal at the LED PIN and to turn OFF the LED apply logic high (1) signal at the LED pin.

Active Low Switches: Switches are connected in Active LOW configuration when switch is pressed it will read logic low (0) at the switch PIN and when not pressed will read logic high (1). Jumper setting:

JP1 Pin 2 and 1 7 segment LED VCC Pin 2 and 3 LCD VCC

JP2 Pin 2 and 1 L293D power supply Pin 2 and 3 ULN2003 power supply JP3 Pin 2 and 1 Relay connection

Pin 2 and 3 ADC7 JP4 Pin 2 and 1 Buzzer Pin 2 and 3 ADC6



Legent file:

Pin out Description:

SD Card Module Pin 1 3.3V Pin 2 GND

Pin 3 MOSI (Master out slave in) Pin 4 MISO (master in slave out) Pin 5 SCK (Serial clock) Pin 6 SS (slave select)



I2C Pin 1 GND

Pin 2 SCL Pin 3 SDA

UART Pin 1 GND

Pin 2 RX Pin 3 TX

4*4 KEYPAD Matrix Pin 1 VCC Pin 2 GND Pin 3,5,7,9 PORTA.0 to PORTA.3 Pin 10,8,6,4 PORTA.7 to PORTA.4



Programming AVRoN16 development board:

To start programming the AVRoN16 Board first we will need the compiler

which will translate the higher level c code to the hex code which can be

recognize by the microcontroller (microcontroller only understands hex code)

and a burner which will transfer the hex code generated from the computer to

the microcontroller program memory.

There are ample of free softwares available for AVR microcontroller

programming like AVRStudio (compiler), PonyProg (burner) ,Win-Avr (compiler

+ burner) etc.

For programming the AVRoN16 board we are going to use WinAvr software

Software installers:

Free version of the software package is provided in the CD.

Install the software before proceeding.

To start writing a c code, first launch programmers notepad application of

WinAvr from computers start menu.

StartAll ProgramsWinAvrProgrammer Notepad [WinAvr]

Create new file by selecting

FileNewDefault or by simply using the keyboard shortcut keys Ctrl+N



Now write the program in the file and save the file with .c (filename.c)

extension in the folder. (For different programs use different folders)



Now to compile the code we will be need the Makefile, you can

find the Makefile in the sample code folder from the CD provided.

Copy the Makefile to the Project folder where we saved the .c file. (User has

to keep both the .c file and Makefile in same folder)

NOTE: Do not rename the Makefile and dont give any extension to file.

Now open the Makefile in programmers notepad.

User has

to

configure the Makefile for the target microcontroller. Following are the

configuration settings:

1. #MCU name : Here write the name of target microcontroller , in AVRoN16

we are using ATMEGA16 so the name will be MCU=atmega16



2. Select the clock frequency F_CPU, select the clock frequency applied to the

microcontroller, in our case the microcontroller is supplied with onboard

16MHz crystal so the F_CPU will be

F_CPU=16000000

3. FORMAT: Select the output format as ihex (intel hex)

FORMAT = ihex



4. TARGET: Here write the filename without any .c extension.

5. Fuse Setting: user can perform different settings, fuse bit determines the

behavior of the chip, whether it has a boot loader, watchdog timer

conditions, clock speed definitions etc. so that user can configure the chip

in accordance with their requirement.

NOTE: Read the microcontroller datasheet before changing the fuse bits as

playing with fuse bits may damage the microcontroller permanently.

Following is the recommended fuse setting for atmega16.



6. Programming options: This section defines the programming interface for

the microcontroller.

AVRDUDE_PROGRAMMER = ponyser (when using serial ISP programmer

for programming)

= usbasp (when using USBASP programmer for

programming)

AVRDUDE_PORT = com1 (when using serial ISP programmer for

programming)

= usb (when using USBASP programmer for

programming)



Once the Makefile is configured with above setting, user

can now compile the c code and load the hex file on

microcontroller. Follow the steps below to compile and

load the code on microcontroller.

Step 1 : Select Tools tab from the winAVR window, in

Tools click on [winAVR] Make Clean and check out

the output window for any issues. If output window is

displaying

>process Exit Code: 0 then make clean is successful.

Step 2: Now we will compile the C-code to generate the

hex file.



Select Tools tab from the winAVR window, in Tools click on [winAVR]

Make All and check out the output window for any errors in code. If output

window is displaying

>process Exit Code: 0 then make All is successful.

After successful compilation we are ready to load the hex code from computer

to the microcontroller program memory.

Follow following steps to load the code on microcontroller.

1. Power On the board.

2. Connect the programmer interface to the board (Serial ISP programmer or

USBASP programmer. Etc) in case of ISP serial programmers make sure that the

switch is not pressed on the programmer board.)

3. Make sure that hyper terminal program is closed. (In case of serial ISP

programmer if hyper terminal is open while programming you will get error as:

avrdude: ser_open(): can't open device "com1": Access is denied.)

4. Now click on Tools and select [winAVR] Program to transfer the code

from computer to microcontroller, after successful loading of the code on

microcontroller the output window will display the following message.

> process Exit Code: 0



Sample code:

Program to Blink LED: /* Program to blink LED*/ #include // Header file for IO operations #include //HEader file for using inbuilt delay function ////////MICRO DEFINITIONS/////////// #define bit(p) (1

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