zephyr/subsys/lorawan/Kconfig
Jordan Yates f12d36a51e lorawan: move REQUIRES_FULL_LIBC dependency
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>
2022-07-02 14:16:18 +02:00

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# LoRaWAN configuration options
# Copyright (c) 2020 Manivannan Sadhasivam <mani@kernel.org>
# SPDX-License-Identifier: Apache-2.0
menuconfig LORAWAN
bool "LoRaWAN support [EXPERIMENTAL]"
depends on LORA
select REQUIRES_FULL_LIBC
select HAS_SEMTECH_LORAMAC
select HAS_SEMTECH_SOFT_SE
select EXPERIMENTAL
help
This option enables LoRaWAN support.
if LORAWAN
module = LORAWAN
module-str = lorawan
source "subsys/logging/Kconfig.template.log_config"
config LORAWAN_SYSTEM_MAX_RX_ERROR
int "LoRaWAN System Max Rx Error"
default 20
help
System Max Rx timing error value in ms to be used by LoRaWAN stack
for calculating the RX1/RX2 window timing.
choice LORAMAC_REGION
prompt "LoRaWAN Region Selection"
default LORAMAC_REGION_UNKNOWN
help
Select the LoRaWAN region.
config LORAMAC_REGION_UNKNOWN
bool "Unknown region"
config LORAMAC_REGION_AS923
bool "Asia 923MHz Frequency band"
config LORAMAC_REGION_AU915
bool "Australia 915MHz Frequency band"
config LORAMAC_REGION_CN470
bool "China 470MHz Frequency band"
config LORAMAC_REGION_CN779
bool "China 779MHz Frequency band"
config LORAMAC_REGION_EU433
bool "Europe 433MHz Frequency band"
config LORAMAC_REGION_EU868
bool "Europe 868MHz Frequency band"
config LORAMAC_REGION_KR920
bool "South Korea 920MHz Frequency band"
config LORAMAC_REGION_IN865
bool "India 865MHz Frequency band"
config LORAMAC_REGION_US915
bool "North America 915MHz Frequency band"
config LORAMAC_REGION_RU864
bool "Russia 864MHz Frequency band"
endchoice
rsource "nvm/Kconfig"
endif # LORAWAN