User Activity

I'd like to turn LED on or off according to UART receiving situation.What I'd like to do is following,1. If there is no receiving during 3 sec from last data, the LED is turned on (showing NO RECEIVING).2. When UART RX interrupt comes, the LED is tur...
I'd like to know how I can resume receiving data from flow controlled UART.I use HAL, and I set USART2 into "flow control" with Cube MX code like ashuart2.Init.HwFlowCtl = UART_HWCONTROL_RTS_CTS;(115200 bps, data bit 8, stop bit 1, none parity, etc. ...