Printf style debugging over AVR-ISP pins

ihsan kehribar from the Little Wire project informs us of his recent work entitled “Printf style debugging over AVR-ISP pins.” He writes, “if you are breadboarding an AVR chip, you are already using the SPI pins for programming the device; therefore it would be nice to use that cable for low-level debugging also. I wrote an Arduino library for that purpose and it is working! That means, you can set up an Arduino on a breadboard and use the Little Wire as programmer and also console interface for printf style debugging! But, you should tie down the SS pin to the ground as well.”

Via the contact form.