pub fn change_baud(&mut self, config: &Config) {
            self.change_baud_internal(config);
            self.txfifo_reset();
            self.rxfifo_reset();
        }
Modify UART baud rate and reset TX/RX fifo.

# Panics

[`Apb`] is a wrong clock source for LP_UART

[`Apb`]: super::ClockSource::Apb
esp-hal/src/uart.rs