AVR 8-bit Microcontrollers AT06621: Getting Started with Atmel ATmega324PB APPLICATION NOTE Description ® This application note is for getting started with the Atmel ATmega324PB ® AVR based microcontroller. Features • • Getting started with the ATmega324PB microcontroller and tools Getting started with Atmel ATmega324PB Xplained Pro Kit and Atmel Studio 7 This application note contains a list of all tools required to start using ATmega324PB and provides references for additional information. Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 Table of Contents Description.......................................................................................................................1 Features.......................................................................................................................... 1 1. Getting Started with Atmel ATmega324PB................................................................3 1.1. 1.2. Key Features................................................................................................................................ 3 Device Related Website Links......................................................................................................3 1.3. 1.4. ATmega324PB Xplained Pro Kit...................................................................................................5 Atmel Studio................................................................................................................................. 7 1.4.1. Atmel Studio Webpage ................................................................................................. 7 1.4.2. Atmel Studio Microsite................................................................................................... 7 Connecting the ATmega324PB Xplained Pro kit.......................................................................... 7 1.5.1. Auto Board Identification of Xplained Pro Kit ................................................................8 1.5.2. Connect the ATmega324PB Xplained Pro UART to the EDBG COM Port....................9 1.5. 2. Creating an Example Application in Atmel Studio................................................... 10 3. What’s next?............................................................................................................ 13 4. Revision History.......................................................................................................14 Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 2 1. Getting Started with Atmel ATmega324PB 1.1. Key Features • • • • • • • • • • • • • • • • • AVR (Harvard) architecture Single level pipelining In-system reprogrammable flash memory Separate EEPROM section available Optional boot code section with independent lock bits 20MIPS @ 20MHz Most single clock cycle execution Low-power microcontroller with various sleep modes High code density (advanced RISC Instruction Set) On-chip hardware multiplier Short interrupt latency four clock cycles Factory calibrated internal RC oscillator Security with fuses and lock bits ® Atmel QTouch Library support Compatibility between devices (portability) Peripheral touch controller Clock Failure Detection (CFD) Note: For more information about ATmega324PB, refer to the device datasheet. 1.2. Device Related Website Links The ATmega324PB product webpage is available at: http://www.atmel.com/devices/ATMEGA324PB.aspx Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 3 Figure 1-1. Device Webpage The product webpage has five tabs that provide specific information related to the device. • • The Overview tab provides the basic information related to the device such as Key Parameters, Datasheet, link to buy the device, etc. http://www.atmel.com/devices/ATMEGA324PB.aspx?tab=overview The Parameters tab provides the details of various configuration parameters for the device. Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 4 • http://www.atmel.com/devices/ATMEGA324PB.aspx?tab=parameters The Documents tab provides all the related documents such as datasheet and application notes. http://www.atmel.com/devices/ATMEGA324PB.aspx?tab=documents – The Datasheet section contains two types of datasheets: Preliminary / Complete version includes all peripheral descriptions and electrical characteristics. Preliminary Summary / Summary version includes ordering information, pin out, and packaging information. – • • 1.3. The Application Notes section has the device related Application Notes such as Peripheral Usage, Getting Started, Hardware design considerations, etc. and its associated firmware (if available). The Applications tab provides the recommended application areas (not limited to) for this device. http://www.atmel.com/devices/ATMEGA324PB.aspx?tab=applications The Tools tab, all the related tools such as IDE, Programmer, Debugger, Evaluation Kits, BSDL files are listed. This tab features the link to ATmega324PB Xplained Pro kit’s webpage. http://www.atmel.com/devices/ATMEGA324PB.aspx?tab=tools ATmega324PB Xplained Pro Kit The details about ATmega324PB Xplained Pro Kit is available in the following link. http://www.atmel.com/tools/ATMEGA324PB-XPRO.aspx Device Ordering Information is available in the bottom section of the page. Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 5 Figure 1-2. ATmega324PB Xplained Pro Webpage Documents tab displays the kit related documents such as schematics and user guides. http://www.atmel.com/tools/ATMEGA324PB-XPRO.aspx?tab=documents Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 6 Note: For detailed information about the kit such as headers and connections, refer to ATmega324PB Xplained Pro User Guide. 1.4. Atmel Studio 1.4.1. Atmel Studio Webpage The Atmel Studio installer (free IDE) is available at: http://www.atmel.com/tools/ATMELSTUDIO.aspx 1.4.2. Atmel Studio Microsite To learn more about Atmel Studio, refer to the following microsite: http://www.atmel.com/microsite/atmel-studio/ Figure 1-3. Atmel Studio Microsite Webpage In the Videos tab the getting started videos such as creating a new C (GCC) project, debugging AVR ® applications, debugging ARM applications, etc. are available. http://www.atmel.com/Microsite/atmel-studio/videos.aspx 1.5. Connecting the ATmega324PB Xplained Pro kit This section helps the user to connect the ATmega324PB Xplained Pro with the Atmel Studio 7. 1. 2. 3. Download and install Atmel Studio 7 or later versions. Launch the Atmel Studio. Connect the ATmega324PB Xplained Pro to the USB port.It will be visible in the Atmel Studio. Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 7 1.5.1. Auto Board Identification of Xplained Pro Kit • ® When the ATmega324PB Xplained Pro kit is connected to the PC, the Windows Task bar will popup a message, as displayed in the following screenshot. Figure 1-4. ATmega324PB Xplained Pro Driver Installation • If the driver installation is successful, EDBG will be listed in the Device Manager, as displayed in the following screenshot. Figure 1-5. Successful EDBG Driver Installation • • Open Atmel Studio. Go to, View > Available Atmel Tools. The EDBG should be listed in the tools as EDBG and the tool status should display as Connected. This indicates that the tool is communicating as expected with the Atmel Studio. Figure 1-6. EDBG under Available Atmel Tools Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 8 1.5.2. Connect the ATmega324PB Xplained Pro UART to the EDBG COM Port 1. 2. 3. Connect the EDBG USB to the PC. Use the Device Manager to find the COM port number. Default COM port settings are 9600 baud N 8 1. The COM port settings can be changed by using the Device Manager. Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 9 2. Creating an Example Application in Atmel Studio 1. After connecting the board, to create a new project in Atmel Studio, go to File > New > Project. Figure 2-1. Creating New Project in Atmel Studio 2. In the New Project wizard displayed, select the GCC C executable Project template, name the project, and click OK to get the Device Selection wizard. Figure 2-2. New Project Wizard 3. The Device Selection wizard appears as shown in the following image. Select the ATmega324PB ® device from megaAVR device family and click OK. Figure 2-3. Device Selection Wizard 4. The new project and the main.c file will be created as follows. Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 10 Figure 2-4. Project Window 5. Add the following code snippet (LED control using push button) in the main.c file. int main(void) { /* enable the pull-up function */ MCUCR &= ~(1<<PUD); /* enable pull-up for button */ PORTC |= 1<<PORTC6; } 6. /* configure LED pin as output */ DDRC |= 1<<DDRC7; while(1) { /* check the button status (press - 0 , release - 1 ) */ if(!(PINC & (1<<PINC6))) { /*switch on the LED until button is pressed */ PORTC &= ~(1<<PORTC7); } else { /* switch off the LED if button is released*/ PORTC |= 1<<PORTC7; } } Code explanation: – Each PORT has three registers DDRx, PORTx, and PINx – The DDRx register is used to configure the port pin direction. 1 - Output; 0 - Input – ATmega324PB Xplained Pro kit does not have pull-ups connected and hence internal pull-up have to be for the button. Set the MCUCR > PUD bit as logic zero to enable pull-up. – When a pin is configured as input and the respective bit in PORTx is written logic one, the respective pin is internally pulled up – The PINx register is used to return the logic level available on the port pin Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 11 – 7. In the example code demonstrated Button connected to pin PC6 is configured as input with Pull-up enabled. Pin PC7 is connected to LED0 and configured as output. – Here the LED0 is controlled based on the Button status – As long the button is not pressed, the LED0 will not glow and on pressing the button the LED0 will glow To debug the project, go to Project > Properties > Tool > Selected Debugger/Programmer and select the Tool as EDBG and Interface as JTAG. Figure 2-5. Tool and Interface Settings 8. To program and execute the application there are two options: – Start a debug session on the board, where the user will be able to program and debug – Program the generated .hex file into the controller and execute the application Choose one of these options in Atmel Studio as shown in the following screen capture. Figure 2-6. Start without Debugging Figure 2-7. Start Debugging and Break Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 12 3. What’s next? • • • • • • • • • • • • • Atmel Studio videos http://www.atmel.com/Microsite/atmel-studio/videos.aspx Atmel Studio online help http://www.atmel.com/webdoc/atmelstudio/ Atmel Studio offline help (After installing Atmel Studio) Open Atmel Studio, Help > View Help (Ctrl+F1) > Atmel Studio ASF (Atmel Software framework) Getting Started and ASF Reference manual http://www.atmel.com/tools/AVRSOFTWAREFRAMEWORK.aspx?tab=documents ASF online documentation http://asf.atmel.com/docs/latest/ Technical documentation for various products http://www.atmel.com/webdoc/ Atmel Gallery https://gallery.atmel.com/ Production Selection Guide Atmel MCU Selector on http://www.atmel.com/ Ordering Samples and Buying evaluation board and kits: http://www.atmel.com/. Go to Buy > Atmel store Technical Documentation http://www.atmel.com/design-support/documentation/default.aspx Knowledge Base and Technical Support/Design Support http://www.atmel.com/design-support/ Collaborative workspace http://spaces.atmel.com ® AVR Freaks community http://www.avrfreaks.net/ Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 13 4. Revision History Doc. Rev. Date Comments 42626A 03/2016 Initial document release Atmel AT06621: Getting Started with Atmel ATmega324PB [APPLICATION NOTE] Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 14 Atmel Corporation © 1600 Technology Drive, San Jose, CA 95110 USA T: (+1)(408) 441.0311 F: (+1)(408) 436.4200 | www.atmel.com 2016 Atmel Corporation. / Rev.: Atmel-42626A-Getting-Started-with-Atmel-ATmega324PB_AT06621_Application Note-03/2016 ® ® ® ® ® ® Atmel , Atmel logo and combinations thereof, Enabling Unlimited Possibilities , AVR , AVR Freaks , megaAVR , QTouch , and others are registered trademarks or ® ® trademarks of Atmel Corporation in U.S. and other countries. ARM is a registered trademark of ARM Ltd. Windows is a registered trademark of Microsoft Corporation in U.S. and or other countries. Other terms and product names may be trademarks of others. DISCLAIMER: The information in this document is provided in connection with Atmel products. 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