While it was very good of ST to make the fantastically inexpensive and versatile STM32F4Discovery board, they have made things a little difficult in the choice of peripherals in places.
A USART is a universal synchronous asynchronous receiver transmitter. A serial port if you like. On the STM32 however, it really is universal. This peripheral has a raft of features for a huge range of serial protocols including all the usual asynchronous modes plus IrDA, LIN, Smartcard Emulation and the ability to function as an… Read More »