mirror of
https://github.com/tjboldt/Apple2-IO-RPi.git
synced 2024-10-31 14:08:27 +00:00
55c1cb180d
The implemenation is based on a Raspberry Pi Pico - see https://github.com/a2retrosystems/A2retroNET The new hardware type has a simple UART-type interface. Beside the two data registers, there are only the two bits to indicate readability and writability of the data registers.
74 lines
3.1 KiB
CMake
74 lines
3.1 KiB
CMake
# This is a copy of <PICO_SDK_PATH>/external/pico_sdk_import.cmake
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# This can be dropped into an external project to help locate this SDK
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# It should be include()ed prior to project()
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if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH))
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set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})
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message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')")
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endif ()
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if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT} AND (NOT PICO_SDK_FETCH_FROM_GIT))
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set(PICO_SDK_FETCH_FROM_GIT $ENV{PICO_SDK_FETCH_FROM_GIT})
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message("Using PICO_SDK_FETCH_FROM_GIT from environment ('${PICO_SDK_FETCH_FROM_GIT}')")
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endif ()
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if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_PATH))
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set(PICO_SDK_FETCH_FROM_GIT_PATH $ENV{PICO_SDK_FETCH_FROM_GIT_PATH})
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message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
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endif ()
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set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
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set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
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set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")
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if (NOT PICO_SDK_PATH)
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if (PICO_SDK_FETCH_FROM_GIT)
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include(FetchContent)
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set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
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if (PICO_SDK_FETCH_FROM_GIT_PATH)
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get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
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endif ()
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# GIT_SUBMODULES_RECURSE was added in 3.17
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if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.17.0")
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FetchContent_Declare(
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pico_sdk
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GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
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GIT_TAG master
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GIT_SUBMODULES_RECURSE FALSE
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)
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else ()
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FetchContent_Declare(
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pico_sdk
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GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
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GIT_TAG master
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)
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endif ()
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if (NOT pico_sdk)
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message("Downloading Raspberry Pi Pico SDK")
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FetchContent_Populate(pico_sdk)
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set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
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endif ()
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set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
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else ()
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message(FATAL_ERROR
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"SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
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)
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endif ()
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endif ()
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get_filename_component(PICO_SDK_PATH "${PICO_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
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if (NOT EXISTS ${PICO_SDK_PATH})
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message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' not found")
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endif ()
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set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake)
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if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE})
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message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK")
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endif ()
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set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE)
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include(${PICO_SDK_INIT_CMAKE_FILE})
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