Hey,
I’m looking at adding “serial” support to mynewt as a side
project.
As I would typically see this architected, it would look like:
—
console | serial | pty
—
tty
—
uart
Where the tty support is below the console and serial port, and handles
things like flow control and terminal ready.
Currently the architecture has tty in console_tty.c and flow control
handling is left to the UART hal (RTS/CTS handshaking.).
I think the UART HAL should handle RTS/CTS handshaking, but I’m
wondering if we shouldn’t move to an architecture where we have a
package, sys/tty which maintains the ring buffer, along with terminal
settings (DTR/DCD).
The other alternative is to just re-implement that directly in a
serial_* library, which seems fine to me as well. Our console doesn’t
exactly need to run on top of complex TTYs.
Thoughts?
Sterling
