cmake_minimum_required(VERSION 3.20) # Point BOARD_ROOT and DTS_ROOT to the 'software' directory, which contains 'boards'. list(APPEND BOARD_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/../..) find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE}) project(slave_node) target_sources(app PRIVATE src/main.c src/shell_modbus.c)