I have the BF609-ezkit and am experimenting with it to see if it can suit my needs. The device drivers provided with the BSP helps, but there is no USB code available other than the paid uc/USB stack.
Are there any free alternatives out there? Microchip has a full, royalty free stack available for their processors... why can't Analog do the same? There is absolutely no USB support in the Blackfin (particularly the BF609-ezkit). Even HAL layer would help tremendously.