Atmel ATmega328PB Xplained Mini Instructions d'installation et d'utilisation
Atmel AVR 8-bit Microcontroller
AT08401: Getting Started with Atmel
ATmega328PB
APPLICATION NOTE
Description
This application note aims at getting started with the Atmel® ATmega328PB
AVR® based microcontroller.
Features
•Getting started with the ATmega328PB microcontroller and tools
•Getting started with Atmel ATmega328PB Xplained Mini Kit and Atmel
Studio 6.2
This application note contains a list of all necessary tools required to start
the work and points to where to look for additional information.
Atmel-42482A-Getting-Started-with-ATmega328PB_AT08401_Application Note-08/2015
Table of Contents
Description.......................................................................................................................1
Features.......................................................................................................................... 1
1. Getting Started with Atmel ATmega328PB................................................................3
1.1. Key Features................................................................................................................................ 3
1.2. Device Related Website Links......................................................................................................3
1.3. ATmega328PB Xplained Mini Kit..................................................................................................5
1.4. Atmel Studio................................................................................................................................. 7
1.4.1. Atmel Studio Webpage ................................................................................................. 7
1.4.2. Atmel Studio Microsite................................................................................................... 7
1.5. Connecting the ATmega328PB Xplained Mini kit......................................................................... 8
1.5.1. Auto Board Identification of Xplained Mini Kit ...............................................................8
1.5.2. Connect the ATmega328PB Xplained Mini UART to the mEDBG COM Port................9
1.6. Programming and Debugging...................................................................................................... 9
1.6.1. Programming the ATmega328PB Xplained Mini by using mEDBG............................... 9
1.6.2. Debugging the ATmega328PB Xplained Mini by using mEDBG................................. 10
2. Creating an Example Application in Atmel Studio....................................................11
3. What’s next?............................................................................................................14
4. Revision History.......................................................................................................15
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1. Getting Started with Atmel ATmega328PB
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 detailed information (like AVR architecture, flash size, number of pins, operating voltage range,
number of peripheral channels, module description, etc.) refer to the ATmega328PB datasheet.
1.2. Device Related Website Links
The ATmega328PB product overview webpage (as shown in the figure below) is available at:
http://www.atmel.com/devices/ATMEGA328PB.aspx
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Figure 1-1 Device Webpage
In the Parameters tab, the configuration parameter details (like flash size, number of peripheral channels,
number of I/O pins, etc.) for this device can be found.
http://www.atmel.com/devices/ATMEGA328PB.aspx?tab=parameters
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In the Documents tab, all the related documents (like datasheet and application notes) for this device
can be found.
http://www.atmel.com/devices/ATMEGA328PB.aspx?tab=documents
In the Datasheet section under the Documents tab today there are two documents:
1. Preliminary / Complete version (includes all peripheral descriptions and electrical characteristics).
2. Preliminary Summary / Summary version (includes Ordering Information, pin out, and Packaging
Information).
The device related application notes (like e.g. hardware design considerations) and its associated
firmware (if any) are also available under the Documents tab.
In the Applications tab, the recommended application areas (not limited to) for this device can be found.
http://www.atmel.com/devices/ATMEGA328PB.aspx?tab=applications
In the Tools tab, all the related tools (like IDE, programmer, debugger, evaluation kits, BSDL files) for this
device can be found.
http://www.atmel.com/devices/ATMEGA328PB.aspx?tab=tools
The ATmega328PB Xplained Mini kit’s webpage can be viewed by clicking the ATmega328PB Xplained
Mini available in the following link:
http://www.atmel.com/devices/ATMEGA328PB.aspx?tab=tools
1.3. ATmega328PB Xplained Mini Kit
The kit can be ordered online by clicking Add to Cart in the following link:
http://www.atmel.com/tools/MEGA328PB-XMINI.aspx
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Figure 1-2 ATmega328PB Xplained Mini Webpage
In the Documents tab, all the kit related documents like schematics and user guide can be found.
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http://www.atmel.com/tools/MEGA328PB-XMINI.aspx?tab=documents
Note: For detailed information like header and connections, refer to the ATmega328PB Xplained Mini
User Guide, which is available at the under the Documents tab.
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_studio6/
Figure 1-3 Atmel Studio Microsite Webpage
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In the Videos tab the getting started videos (like editor, creating a new C (GCC) project, debugging AVR
applications, debugging ARM® applications, etc.) can be found.
http://www.atmel.com/microsite/atmel_studio6/videos.aspx
1.5. Connecting the ATmega328PB Xplained Mini kit
This section helps the user to connect the ATmega328PB Xplained Mini with the Atmel Studio 6.2 SP2
(6.2.1563).
1. Download and install Atmel Studio version 6.2 SP2 (6.2.1563) or later versions.
2. ATmega328PB Part Pack for Atmel Studio 6.2 available in the Atmel Studio link has to be installed.
This bundle adds support for ATmega328PB device in Atmel Studio 6.2.SP2.
Note: There is no need to install part pack for Atmel Studio future versions.
3. Launch the Atmel Studio.
4. Connect the ATmega328PB Xplained Mini to the USB port and it will be visible in the Atmel Studio.
1.5.1. Auto Board Identification of Xplained Mini Kit
•Once the ATmega328PB Xplained Mini kit is connected to the PC, the Windows® Task bar will pop-
up a message as shown in Figure 1-4 ATmega328PB Xplained Mini Driver Installation on page
8.
Figure 1-4 ATmega328PB Xplained Mini Driver Installation
•If the driver installation is proper, EDBG will be listed in the Device Manager as shown in Figure
1-5 Successful mEDBG Driver Installation on page 9
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Figure 1-5 Successful mEDBG Driver Installation
•Open Atmel Studio 6.2, go to View → Available Atmel Tools. The EDBG should get listed in the
tools as mEDBG and the tool status should display as "Connected". This indicates that the tool is
communicating properly with the Atmel Studio.
Figure 1-6 mEDBG under Available Atmel Tools
1.5.2. Connect the ATmega328PB Xplained Mini UART to the mEDBG COM Port
1. Connect the mEDBG USB to the PC.
2. Use the Device Manager to find the COM port number.
3. Default COM port settings are 9600 baud N 8 1. The COM port settings can be changed by using
the Device Manager.
1.6. Programming and Debugging
This section helps to program and debug the ATmega328PBXplained Mini kit by using mEDBG.
1.6.1. Programming the ATmega328PB Xplained Mini by using mEDBG
1. Connect the mEDBG USB to the PC.
2. Go to the Atmel Studio: Click Tools, select Device Programming, and then select the connected
mEDBG as Tool with Device as ATmega328PB and Interface as ISP, click Apply.
3. Select Memories and locate the source .hex or .elf file and then click Program.
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4. If the source contains fuse settings, go to Production file and upload the .elf file and program the
fuses.
Note: If ISP programming fails it could be because the debugWIRE is enabled. See debugging section
on how to disable debugWIRE mode.
1.6.2. Debugging the ATmega328PB Xplained Mini by using mEDBG
1. Start Atmel Studio.
2. Connect the mEDBG USB to the PC.
3. Open your project.
4. In the Project menu select the project properties page. Select the Tools tab and select mEDBG as
debugger and debugWIRE as interface.
5. In the Debug menu click Start Debugging and Break.
6. Atmel Studio will display an error message if the DWEN fuse in the ATmega328PB is not enabled,
click YES to make Studio set the fuse using the ISP interface.
7. A debug session is started with a break in main. Debugging can start.
8. When exiting debug mode select Disable debugWIRE and Close in the Debug menu, this will
disable the DWEN fuse.
Note: If the debug mode is not exited by selecting Disable debugWIRE and Close in the Debug menu,
the DWEN fuse will be enabled and the target will still be in debug mode, i.e. it will not be possible to
program the target by using the SPI (ISP) interface.
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