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Introduction
The ATMEGA 2560 is a 8 bit CPU with 8kByte of SRAM and 256 kByte of Flash. It is capable as an application controller for the iRJ45/SoM module.
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ATMEGA 2560 targets are only compatible with uGoal. |
Software
Toolchain and flash tool
For compiling the example code, a AVR compiler is required. AVR-GCC can be obtained in several ways. Further information can be found here: http://avr-eclipse.sourceforge.net/wiki/index.php/The_AVR_GCC_Toolchain
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# on a MAC brew tap osx-cross/avr brew install avr-gcc avrdude # on Linux sudo apt-get install gcc-avr binutils-avr gdb-avr avr-libc avrdude # on Windows using msys2 pacman -S --needed base-devel mingw-w64-x86_64-toolchain pacman -S mingw-w64-x86_64-avr-gcc pacman -S mingw-w64-x86_64-avr-libc pacman -S mingw-w64-x86_64-avrdude |
Building
Within a example folder of the software delivery build the firmware with following commands:
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make PLATFORM=atmega2560 clean all |
Flashing
Flashing the firmware is done with the following command. Please use the UART device for your system.
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The Makefile target serial will use minterm.py from the pyserial package. Thus python and pyserial needs to be installed.
Serial Logging
On *nix systems the Makefile target serial can be used to open a serial terminal. This target uses the serial terminal from the pyserial package for python.
On windows systems a dedicated serial terminal should be used for serial logging (e.g. Putty).
Getting Started
Preparations
Hardware Requirements
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Make sure following settings are set:
J13 - Connect “iRJ45” with “Sockel”
J8 - Connect “CS_SOURCE” with “PB2”
J7 - Connect “RST_SOURCE” with “PD7”
Set all DIP-Switches to “OFF”
ATMEGA 2560 Board
There is no configuration required.
Target System
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Please connect both boards with each other, before you connect them per USB to your computer. |
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PMOD connector pin | Arduino pin | Function |
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1 (CS) | 53 | Chip select |
2 (MOSI) | 51 | MOSI |
3 (MISO) | 50 | MISO |
4 (SCK) | 52 | SCK |
Debugging
UART
The ATMEGA 2560 provides a UART over USB cable. Choose the following settings:
Speed | 28800 |
Data Bits | 8 |
Stop Bits | 1 |
Parity | Odd |
Flow Control | XON/XOFF |
Application 02_profinet
After setting up the serial monitor and starting the debug session, the output should look like this:
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[INF] ../rpc/goal_mctc_rb.c:277 creating rpc ring buffer with buffer size 768 and elem size 256 [INF] ../rpc/goal_mctc_rb.c:277 creating rpc ring buffer with buffer size 768 and elem size 256 [INF] ../goal_media/goal_mi_mctc.c:793 rpc transfer size set to 1024 [INF] ../goal_media/goal_mi_mctc.c:723 peer requested Sync Init [INF] ../goal_media/goal_mi_mctc.c:723 peer requested Sync Init [INF] ../goal_media/goal_mi_mctc.c:723 peer requested Sync Init [INF] ../goal_media/goal_mi_mctc.c:723 peer requested Sync Init [INF] ../goal_media/goal_mi_mctc.c:455 RPC state synchronized, running appl_setup [INF] ../goal_media/goal_mi_mctc.c:458 configuring timeout values for peer [INF] ../pnio/goal_pnio_rpc_ac.c:259 PROFINET Application Core successfully started [INF] ../example/02_profinet/goal_appl.c:188 Initializing device structure [INF] ../example/02_profinet/goal_appl.c:230 PROFINET ready [INF] ../goal_media/goal_mi_mctc.c:487 local setup done [INF] ../ugoal/ugoal.c:212 HEAP utilization: 3400/4096 (83%). |
Known Issues
Following you’ll find current limitations regarding the ATMEGA 2560.
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