practic_les4_c_usart1_rxtx

WeAct BlackPill STM32F411CEU6 GPIOC Pin13 --> LED USART1 TX -->GPIOA Pin9, RX (interrupt)-->GPIOA Pin10 * Minicom :"Hello Word" scrolling * Minicom :If ASCII char Rx < 5, Turn On LED * Minicom :press 3, LED On. Press 9, LED Off * HSI=16 MHz,APB2ENR = 16MHz * Bps/Par/Bits : 115200/-/8N1 * Hardware Flow Control = No