28-08-2014, 02:53 PM
WinAVR and C Debugging Tutorial Seminar Report
[attachment=67250]
Introduction
WinAVR is a set of developing tools for Atmel AVR RISC microprocessors
Programs written in C, compiled with GCC and avr-libc
Open source, obtained at: winavr.sourceforge.net
Installing
Fairly easy to install (for use at home)
http://winavr.sourceforge
Comes with all the tools you need: Programmer’s Notepad, MFile
Programmer’s Notepad
Programmer’s Notepad is the main tool you will be using to write your C code
Just like any other compiler
syntax highlighting
Support for different programming languages
Ability to compile your code (using gcc compiler)
Adding external tools (continued)
Select a Scheme (C/C++)
Click on “Add”
“Name” is an identifier for this tool
Command is the command used
Folder should be %d (Path of file)
This tool will call “make extcoff”, and is now available under “Tools” menu
We will need this later for debugging in AVR Studio
Building your source
Write your C source, save as blinky.c
Open up MFile
Makefile -> Main File Name = blinky (no .c)
Makefile -> MCU Type = atmega32
Other values should be fine at default
File -> Save As to blinky.c directory
In Programmer’s Notepad: Select Tools ->Make All
MFile
Simple program to make Makefiles for compiling your C code
A Makefile is a configuration file that tells the compiler how to compile your code
What chip you’re using (atmega32)
Target filename (blinky.c)
GNU Make
WinAVR uses “Makefiles” when building projects, with GNU Make
GNU Make builds dependencies and then source files
Will only rebuild files from updated or new source (saves time)
Very powerful tool: see C:\WinAVR\doc\gnu\make.html for more info
Programming your ATmega32
To program your chip with the C code you wrote:
Go to AVR Studio
Connect to your chip using JTAG ICE
Go to Fuses tab, make sure Ext Clock is set
In Program tab, flash your chip with the .hex file you compiled in Programmer’s Notepad
That’s it!
Building C code for Debugging
Go to Tools Options Tools
Pull down the Schemes window and click on C/C++ option
A make extcoff option will appear; click OK
Click on Tools again
Click on make extcoff to generate the COF file
(this will generate the correct debug file for AVR Studio that includes the C code information)
[attachment=67250]
Introduction
WinAVR is a set of developing tools for Atmel AVR RISC microprocessors
Programs written in C, compiled with GCC and avr-libc
Open source, obtained at: winavr.sourceforge.net
Installing
Fairly easy to install (for use at home)
http://winavr.sourceforge
Comes with all the tools you need: Programmer’s Notepad, MFile
Programmer’s Notepad
Programmer’s Notepad is the main tool you will be using to write your C code
Just like any other compiler
syntax highlighting
Support for different programming languages
Ability to compile your code (using gcc compiler)
Adding external tools (continued)
Select a Scheme (C/C++)
Click on “Add”
“Name” is an identifier for this tool
Command is the command used
Folder should be %d (Path of file)
This tool will call “make extcoff”, and is now available under “Tools” menu
We will need this later for debugging in AVR Studio
Building your source
Write your C source, save as blinky.c
Open up MFile
Makefile -> Main File Name = blinky (no .c)
Makefile -> MCU Type = atmega32
Other values should be fine at default
File -> Save As to blinky.c directory
In Programmer’s Notepad: Select Tools ->Make All
MFile
Simple program to make Makefiles for compiling your C code
A Makefile is a configuration file that tells the compiler how to compile your code
What chip you’re using (atmega32)
Target filename (blinky.c)
GNU Make
WinAVR uses “Makefiles” when building projects, with GNU Make
GNU Make builds dependencies and then source files
Will only rebuild files from updated or new source (saves time)
Very powerful tool: see C:\WinAVR\doc\gnu\make.html for more info
Programming your ATmega32
To program your chip with the C code you wrote:
Go to AVR Studio
Connect to your chip using JTAG ICE
Go to Fuses tab, make sure Ext Clock is set
In Program tab, flash your chip with the .hex file you compiled in Programmer’s Notepad
That’s it!
Building C code for Debugging
Go to Tools Options Tools
Pull down the Schemes window and click on C/C++ option
A make extcoff option will appear; click OK
Click on Tools again
Click on make extcoff to generate the COF file
(this will generate the correct debug file for AVR Studio that includes the C code information)