cmake_minimum_required(VERSION 3.13) set(PICO_BOARD pico) set(CMAKE_C_STANDARD 11) set(CMAKE_CXX_STANDARD 17) # initialize the SDK based on PICO_SDK_PATH # note: this must happen before project() include($ENV{PICO_SDK_PATH}/external/pico_sdk_import.cmake) project(adc3 C CXX ASM) # initialize the Raspberry Pi Pico SDK pico_sdk_init() # rest of your project add_executable(adc3 adc3.c lib/ssd1306.c ) target_link_libraries(adc3 pico_stdlib hardware_adc hardware_i2c ) pico_add_extra_outputs(adc3) pico_enable_stdio_usb(adc3 1) pico_enable_stdio_uart(adc3 0)