Hi Paul, HugeMan
Thank you for the code in “http://gitorious.org/dsonano/dso-firmware” - it worked - I was able to add the FFT code and create a dfu file for the app. I uploaded it to my NANO and it worked like your original.
I also tried HugeMan’s link “https://github.com/Seeed-Studio/DSO”
On first loading this it showed "Broken option for tool “General” and on compilation throws up 210 errors and 16 warnings.
Many of the errors are from the assembler concerning MOVW, MOVT and MOVS - Error[438]: This instruction is not available in the selected cpu/core.
I can’t see where a different cpu/core can be selected - I thought that was just in the include files.
The warnings are Warning[Pa050]: non-native end of line sequence detected (this diagnostic is only issued once).
Anyway, there seems to be a compatibility problem which I dont understand with this version of the code.
Tony