STM32 Serial Monitor not working!!!!
Ai thinker Bu01 board Connection via USB to TTL Configuration: Coding test #include <HardwareSerial.h> // Define Serial1 manually on PA9 (TX), PA10 (RX) HardwareSerial Serial1 (PA10, PA9); // RX, TX void setup () { Serial1 . begin ( 115200 ); pinMode (PA1, OUTPUT); pinMode (PA2, OUTPUT); } void loop () { Serial1 . println ( "💡 STM32 is alive via USB-TTL!" ); digitalWrite (PA1, HIGH); digitalWrite (PA2, LOW); delay ( 300 ); digitalWrite (PA1, LOW); digitalWrite (PA2, HIGH); delay ( 300 ); } Before uploading code: BOOT0=1 BOOT1=0 Then press reset button Upload