Some examples for the STM32F4-Disco board

examples/stm32/f4/stm32f4-disco/usart/README

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+Simple USART Example
+--------------------
+
+This example sets up a USART port and provides a few simple
+character handling functions to that a short interactive program
+can be demonstrated. It re-uses the clock setup from systick_blink
+and that means you could do times delays but that aspect isn't used.
+
+After this example we do character handling with interrupts.