michaelh/zephyr
1
0
Fork 0
Code Releases Activity

lorawan: move REQUIRES_FULL_LIBC dependency

Browse source 
Move the `REQUIRES_FULL_LIBC` dependency from `config LORA` to
`config LORAWAN`. The commit that added the `select` (f590d4fa) mentions
that this is required by `loramac-node`, which is only used by LoRaWAN,
not the base LoRa code.

This results in small FLASH savings when compiling the samples, but can
result in larger savings in more complex applications:
```
// With REQUIRES_FULL_LIBC
west build -b 96b_wistrio zephyr/samples/drivers/lora/send/
[162/162] Linking C executable zephyr/zephyr.elf
Memory region         Used Size  Region Size  %age Used
           FLASH:       37708 B       128 KB     28.77%
            SRAM:        8832 B        32 KB     26.95%
        IDT_LIST:          0 GB         2 KB      0.00%

// Without REQUIRES_FULL_LIBC
[181/181] Linking C executable zephyr/zephyr.elf
Memory region         Used Size  Region Size  %age Used
           FLASH:       37444 B       128 KB     28.57%
            SRAM:        8832 B        32 KB     26.95%
        IDT_LIST:          0 GB         2 KB      0.00%
```

Signed-off-by: Jordan Yates <jordan.yates@data61.csiro.au>
This commit is contained in:
Jordan Yates 2022-07-01 20:48:46 +10:00 • committed by Carles Cufí
commit f12d36a51e
2 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

1
drivers/lora/Kconfig
View file

@ -8,7 +8,6 @@
menuconfig LORA
bool "LoRa support [EXPERIMENTAL]"
select REQUIRES_FULL_LIBC
select POLL
select EXPERIMENTAL
help

1
subsys/lorawan/Kconfig
View file

@ -6,6 +6,7 @@
menuconfig LORAWAN
bool "LoRaWAN support [EXPERIMENTAL]"
depends on LORA
select REQUIRES_FULL_LIBC
select HAS_SEMTECH_LORAMAC
select HAS_SEMTECH_SOFT_SE
select EXPERIMENTAL