Two new examples for the stm32f303 nucleo board are available for download. The first of these outputs ADC conversion results over the serial port (serialadc). The second performs a simple analog pass-through function sending the ADC output to the DAC. Sample rates over 100kHz are possible. This example uses the systick interrupt to generate a reliable sample rate. More details here:
http://eleceng.dit.ie/frank/arm/BareMetalSTM32F303Nucleo/index.html