practic_les6_c_usart1_tx_int

WeAct BlackPill STM32F411CEU6 USART1 TX With Interrupt (TCIE) -->GPIOA Pin9 * HSI=16 MHz,APB2ENR = 16MHz * Bps/Par/Bits : 115200/-/8N1 * Hardware Flow Control = No * Software Flow Control = No