Using the SPI feature

[adafruit]

yay! thanks! i lost my dev environment, i thought usbdriver.h came with libusb, no?
its been years

[sgoadhouse]

Sorry for the slow response ...

I could not find usbdriver.h in libusb, at least not the version I had to work with. I took your usbtiny.h from avrdude and created it. It was missing some defines that I figured out by looking at the usbtiny firmware. It was mainly the numbers for the commands.

[Cyberspice]

I've just been looking at the example code in the tarball (as I want to debug code in an ATTiny25 and I don't get much choice with the I/O). The usbdriver.h header is missing from the tarball so most of the defines are missing.

usb.h is the header file for libusb (v0.1, v1.0 has a different API) so you may need to install the libusb-dev package (or equivalent) on Linux for that. Since I'm OS X I'm going to steal it the header from my linux box. I have the library from installing the cross-pack tools.

I'm an embedded software engineer by default and I often have to debug, analyse and extend other people's code so I'm just going to look at avrdude and work out how it works from there. If you'd like a new example I'd be willing to write one.

Melanie