Hi everyone. Does anyone know, is there a decent USB Drivers pack for STM32F3xx. Like there is in latest 2.9.0 pack for STM32F4xx: ..\STM32F4xx_DFP\2.9.0\CMSIS\Driver\OTG_FS_STM32F4xx.c but there is no such thing in 1.3.0 pack for STM32F3x.
CMSIS drivers are not available for that device family, yet.
For the time being, you can use ST's USB drivers, but recent versions of MDK middlware require CMSIS compliant drivers. These drivers encourage software portability.
For a list of device families that do have some CMSIS driver coverage, you can view this KB article: http://www.keil.com/support/docs/3707.htm You can go to the specific device in the database to look to see if a specific driver is available in a device family pack.
If you contact Keil support directly, they can file an internal feature request for this driver, but their developers only have a small team working on a large demand. The best way to get more CMSIS driver coverage is to encourage the silicon partner to start developing these drivers. You can do this by contacting them directly and requesting a CMSIS USB device or host driver for that device family.