BetaFPVF411: add softserial
#define USART_PORTS \
USART1_PA10PA9 \
- USART2_PA3PA2
+ USART2_PA3PA2 \
+ SOFT_SERIAL_PORT(1, PIN_B3, PIN_B3)
//#define USB_DETECT_PIN GPIO_Pin_15
//#define USB_DETECT_PORT GPIOC
