Open Source IDE and Toolchain for the STM32F4 Discovery on Mac OSX LionOpen Source IDE and Toolchain for the STM32F4 Discovery on Mac OSX Lion STM32F4-Discovery ST Micro in the last few weeks was the first to market with the brand new ARM Cortex-M4 32-bit microcontroller core. The really interesting new feature is the ‘F’ in the name – this is the first low-cost, low-ish-power light duty microcontroller to include a built in, single cycle per instruction 32-bit float
