Hi,
I’m trying to use the SoftDevice Controller in peripheral-only mode on the nRF54L15 (using NCS 3.0.1), but I can’t get it to build with `CONFIG_BT_LL_SOFTDEVICE_PERIPHERAL=y`.
OS: Windows 11
NCS version: 3.0.1
Board: nRF54L15dk
Example I’m using: github.com/.../l5_e2_sol
The build fails with the following error:
CMake Error at C:/ncs/v3.0.1/nrfxlib/softdevice_controller/CMakeLists.txt:28 (message): This combination of SoC and floating point ABI is notsupported by the SoftDevice Controller lib.
I’m not entirely sure what’s causing this, but it seems the peripheral-only SoftDevice Controller might be built for soft ABI, while the nRF54L05 SoC and toolchain use a hard-float ABI by default. If that’s the case, I assume that’s why it only builds with `CONFIG_BT_LL_SOFTDEVICE_MULTIROLE`.
I tested the same application on the nRF52DK (nRF52832), and it builds fine with the peripheral-only controller. It also results in noticeably lower flash and RAM usage (~16 KB and ~1.2 KB savings compared to the multirole controller), which would be very useful for low-footprint BLE peripheral applications on the nRF54L05.
Is this a known limitation for the nRF54L series, or is there a way to use the peripheral-only controller variant on this SoC? We’d still like to take advantage of the pre-certified Bluetooth Host + SoftDevice Controller stack provided in the official NCS releases.
Thanks in advance.
Best regards,
Tadej
