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RIOT/drivers/sx127x/Makefile.dep
Marian Buschsieweke 276ad5716a
sys/net/gnrc/netif: allow checking if a netdev is legacy or new API
A if `netdev_driver_t::confirm_send()` is provided, it provides the
new netdev API. However, detecting the API at runtime and handling
both API styles comes at a cost. This can be optimized in case only
new or only old style netdevs are in use.

To do so, this adds the pseudo modules `netdev_legacy_api` and
`netdev_new_api`. As right now no netdev actually implements the new
API, all netdevs pull in `netdev_legacy_api`. If `netdev_legacy_api` is
in used but `netdev_new_api` is not, we can safely assume at compile
time that only legacy netdevs are in use. Similar, if only
`netdev_new_api` is used, only support for the new API is needed. Only
when both are in use, run time checks are needed.

This provides two helper function to check for a netif if the
corresponding netdev implements the old or the new API. (With one
being the inverse of the other.) They are suitable for constant folding
when only new or only legacy devices are in use. Consequently, dead
branches should be eliminated by the optimizer.
2022-08-17 12:56:07 +02:00

10 lines
239 B
Makefile

FEATURES_REQUIRED += periph_gpio
FEATURES_REQUIRED += periph_gpio_irq
FEATURES_REQUIRED += periph_spi
FEATURES_OPTIONAL += periph_spi_gpio_mode
USEMODULE += iolist
USEMODULE += netdev_legacy_api
USEMODULE += ztimer_msec
USEMODULE += lora