Move to CMake 3.20.0.
At the Toolchain WG it was decided to move to CMake 3.20.0.
The main reason for increasing CMake version is better toolchain
support.
Better toolchain support is added in the following CMake versions:
- armclang, CMake 3.15
- Intel oneAPI, CMake 3.20
- IAR, CMake 3.15 and 3.20
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
There is no need to include nrf_clock_control.h so remove it as
this fixes a build issue when trying to compile this sample on
litex_vexriscv.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Add a sample intended to show how to use I2S drivers in processing of
audio streams. The sample starts both the RX and TX streams and adds
a simple echo effect to the received audio signal.
Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>