Unable to use SoftSerial or BufferedSoftSerial with stm32f103 (Blue Pill)

[JohnnyK (Jan Kamidra)]

Hello Kumar,

I not have this board but how I see, you try to use the SoftSerial library.

You can check these topics and maybe you will found the reason.
SoftSerial problem L432KC
TimerEvent behavior is wrong on STM32 Mbed boards

BR, Jan