Générateur de code d'initialisation :

http://www2.st.com/content/st_com/en/products/development-tools/software-development-tools/stm32-software-development-tools/stm32-configurators-and-code-generators/stm32cubemx.html

Compilateur + IDE OpenSTM32/SW4STM32 (AC6 aka SystemWorkbench) :

http://www.openstm32.org/Downloading+the+System+Workbench+for+STM32+installer

Bon courage...