The key component used in the tutorials is the STM32 VL discovery
board produced by STMicroelectronics (ST) and available from many electronics
distributors for approximately $10. 4 This board, illustrated in Figure 1.2
includes a user configurable STM32 F100 micro-controller with 128 KB flash
and 8 KB ram as well as an integrated hardware debugger interface based
upon a dedicated USB connected STM32 F103. With appropriate software