PiGFX is a bare metal kernel for the Raspberry Pi that implements a basic ANSI terminal emulator with the additional support of some primitive graphics functions.
When you set the port to 8 bits you will only ever see 9 bits on the scope. The stop bits is the same level as the idle statet so you can only ever see the start of the stop bit. If you send consecutive bytes you can sort of see the end of the start bit as it is the same as the start of the start bit for the next character.
When you set the port to 8 bits you will only ever see 9 bits on the scope. The stop bits is the same level as the idle statet so you can only ever see the start of the stop bit. If you send consecutive bytes you can sort of see the end of the start bit as it is the same as the start of the start bit for the next character.