Is it possible to compile in multiple network drivers, and switch at runtime?

[victorallume]

I'm wanting a particular board to be able to switch between wifi and ethernet. I've tried this on both a Pico W and ESP32 board, both connected to wiznet5k ethernet chips, but after flashing, when I import network it only has WLAN or WIZNET, not both. To compile, I've tried:

• PICO W with wiznet 5100 hat: make BOARD=PICO_W MICROPY_PY_NETWORK_WIZNET5K=W5100S, this only has network.WLAN available, no WIZNET
• PICO W with wiznet 5100 hat: make BOARD=W5100S_EVB_PICO MICROPY_PY_NETWORK_CYW43=1, this only has network.WIZNET available, no WLAN
• similar results in the ESP32.

Any pointers?

[robert-hh]

Are you sure the the first two items of the bullet list are right? The make commands are identical.

[victorallume]

Thanks; have updated the make command

[robert-hh]

Almost right, I assume.

[victorallume]

my failure in copy-pasta :-/

[jimmo]

make BOARD=PICO_W MICROPY_PY_NETWORK_WIZNET5K=W5100S (and your second command to do the reverse configuration) doesn't do what you expect on the rp2 port because these variables are not understood by make. Rather you need to set them for CMake.

To get this working, you should modify ports/rp2/boards/PICO_W/mpconfigboard.cmake to add

set(MICROPY_PY_NETWORK_WIZNET5K W5100S)

Or equivalently add

set(MICROPY_PY_NETWORK_CYW43 ON)

to ports/rp2/boards/W5100S_EVB_PICO/mpconfigboard.cmake.

We should probably add a CMAKE_ARGS_EXTRA option to ports/rp2/Makefile

[victorallume]

Thanks; that worked; I can even get both wifi and ethernet connected at the same time. Out of interest, how does socket decide which interface to use if there are multiple?

[jimmo]

You use bind() to bind the socket interface (by its address).