hil:: screen:: ScreenClient
fn command_complete(&self, r: ReturnCode)
The screen will call this function to notify that a command (except write) has finished.
fn write_complete(&self, buffer: &'static mut [u8], r: ReturnCode)
The screen will call this function to notify that the write command has finished.
This is different from
command_complete as it has to pass back the write buffer
Some screens need some time to start, this function is called when the screen is ready