Hello.
I'm working with the STM32F1 cortex M3 and I need include the Software Serial library but don't works. I need this library for work with a Voice Recognition V3 and other library of the the voice module, otherwise the voice module seem to don't work. I probe the voice module with an Arduino Uno already and works fine, when I try work with the STM32 everything appears to go in the wrong direction. I need help with the library Software Serial and the STM32 for Voice Module V3. Thanks to anyone who can help.
When I did an internet search using the words "stm32 software serial library", I got a good selection of options.
Not sure why need use software serial when the STM32 blue pill has 3 useable natural hardware serial ports; don't use the serial ports at PA_9 and PA_10. That's is if your using those pins to program the STM32.
Also, some pins are 3.3V only and some pins are 5V tolerant.