When this will occur, the TCNT1 register will be automatically reset to 0 and a Timer 1 compare with OCR1A match interrupt will be generated.īy clicking on the Apply button in the Requirements panel, the CodeWizardAVR will establish the required values for Timer 1 configuration registers:Īs can be seen in the above window, the 16 MHz system clock will be divided by 64 in order to obtain a Timer 1 Clock Value of 250 kHz and the OCR1A register will be initialized with the value 0xC34F. In this operating mode the Timer 1 will count pre-scaled system clock pulses until the TCNT1 register will be equal with the value of the OCR1A register. Timer1 will be used, so click on the corresponding tab:Īs we need a Timer 1 compare match interrupt after each 200 ms, we must select the operating Mode as: CTC top=OCR1A, specify the Period value: 200 ms in the Requirements panel and check the Interrupt on Compare A Match check box:
A Timers/Counters Settings panel will be displayed: Click on the Timers/Counters node of the CodeWizards tree. The next step is to configure a Timer/Counter to generate an interrupt after each 200 ms.
A new configuration panel for Port Settings will be displayed:Ĭlick on the Port D tab in order to select the PORTD configuration:Īs can be seen, the Port D Data Direction for all I/O pins is set by default as inputs (In).Ĭlick on each Bit 0 to Bit 7 button in order to set the I/O pins as outputs:Īs the LEDs must be OFF after chip reset, the potential of their cathodes must be +5V, so the Output Values for Port D Bit 0 to Bit 7 must be set to 1 by clicking on the corresponding buttons: In order to achieve this, click on the Ports node of the CodeWizards tree. The next step is to configure the PORTD pins PD0 to PD7 as outputs. In the Chip Settings panel, select the Chip type: ATmega328P and Clock frequency: 16 MHz. The CodeWizardAVR will be launched and the following window will be displayed: Select the AT90, ATtiny, ATmega option and click on the OK button. A dialog window will be displayed, allowing selecting the AVR chip family for which the CodeWizardAVR will create the program: Execute the File|New|Project Using the CodeWizardAVR. Creating a New Project Launch the Atmel Studio IDE. Connect the USB connector of the Arduino board to another USB port of your computer. The programmers cable connector with the boards ICSP header pin 1. These outputs correspond to PORTD pins PD0.PD7 of the microcontroller.Ĭonnect each LEDs anode, using a 1k resistor, to the pin marked 5V of the boards POWER connector header.Ĭonnect the AVRISP MkII programmer to an USB port of your computer Connect the AVRISP MkII programmer to the ICSP header. If it is not already installed, solder a 6 pin header to the location marked ICSP on the Arduino UNO boardĬonnect the cathodes of 8 LEDs to the outputs marked DIGITAL 0.7 on the board. Make the following hardware preparations:
#Codevision avr v3 installer windows#
Please note that Administrator privileges are required under Windows for installing and using CodeVisionAVR. When prompted, use the default installation directory suggested by the installer.
#Codevision avr v3 installer install#
Preparation Download and install Atmel Studio from Install the CodeVisionAVR C Compiler by executing the CodeVisionAVR.msi installer. The example is a simple program for the Atmel ATmega328 microcontroller on an Arduino UNO board.Ģ. Introduction The purpose of this document is to guide the user through the preparation, building and debugging of an example C program using the CodeVisionAVR V3.03 or later C compiler extension for Atmel Studio 6.1 or later. Building the Project and Programming the Chip. No part of this document may be reproduced in any form except by written permission of the author. Getting Started with the CodeVisionAVR Extension for Atmel Studio 6.1 Revision 1/03.2013 Copyright 2012-2013 Pavel Haiduc and HP InfoTech S.R.L. Getting Started with the CodeVisionAVR Extension for Atmel Studio 6.1