BSP and Device Driver Development Guide
Driver functioning is quite different in this mode. There is no
device driver read function to be passed to Termios. Indeed a
console_read call returns the contents of Termios input buffer.
This buffer is filled in the driver interrupt subroutine
(see Console Driver Termios and Interrupt Driven I/O).
The driver is responsible for providing a pointer to the
InterruptWrite function.
BSP and Device Driver Development Guide
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