Advanced Serial Monitor with UI
PlatformIO Core provides CLI version (pio device monitor) of Serial Monitor. If you need advanced instrument with a rich UI, we recommend free and multi-platform CoolTerm serial port terminal application.
Please note that you need to manually disconnect (close serial port connection) in CoolTerm before doing uploading in PlatformIO. PlatformIO can not disconnect/connect to a target device automatically when CoolTerm is used.