Difference between revisions of "Building for XMEGA"

Revision as of 14:29, 28 September 2018

You'll need to have installed avr-gcc and avr-libc. You may have already done this by following the installation guide, or if using the ChipWhisperer-VM it comes prepared with avr-gcc already setup. See the Installing_ChipWhisperer guide for details.

Once you have a working compiler (check by typing 'avr-gcc' at the command line - if using Windows you may need to setup a special batch file to provide you with a avr-gcc command prompt).

1. We want to use the existing SimpleSerial firmware as a base for our project, but we don't want to edit the existing firmware. Instead, we'll make a new project with a copy of this firmware. Copy the directory of the firmware you want to modify in the chipwhisperer/hardware/vicitims/firmware to a new folder. For example, if you want to modify the simpleserial-base firmware, copy the contents of the simpleserial-base folder to a new one, while if you want to modify simpleserial-aescopy that folder instead. The name is arbitrary, but for this example, we'll call it simpleserial-base-lab1. You must keep it in the same directory, as it will reference other files within that directory for the build process.
2. Open a terminal with avr-gcc in the path. If using Windows the sidebar on the Installing_ChipWhisperer page - you can either add WinAVR to your system path, or you can run the 'winavr.bat' file suggested.

3. Change the terminal to the newly copied directory. For example:

   Windows:

   cd c:\chipwhisperer\hardware\victims\firmware\simpleserial-base-lab1

   Linux/macOS:

   cd chipwhisperer/hardware/victims/firmware/simpleserial-base-lab1

4. Then, run make to build the system. Make sure you specify which platform you're using as your target. For example, for the ChipWhisperer Lite target, run

   make PLATFORM=CW303

   Which should have the following output:

   ...Bunch of lines removed...
   Creating Extended Listing: simpleserial-base.lss
   avr-objdump -h -S -z simpleserial-base.elf > simpleserial-base.lss
   
   Creating Symbol Table: simpleserial-base.sym
   avr-nm -n simpleserial-base.elf > simpleserial-base.sym
   
   Size after:
   AVR Memory Usage
   ----------------
   Device: atxmega128d3
   
   Program:    1524 bytes (1.1% Full)
   (.text + .data + .bootloader)
   
   Data:        224 bytes (2.7% Full)
   (.data + .bss + .noinit)
   
   
   Built for platform CW-Lite XMEGA
   
   -------- end --------

Ensure that the "Built for platform ___" matches your target device.