init: import project

Signed-off-by: Mahyar Koshkouei <mk@deltabeard.com>

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.13...3.23)
+
+# initialize the SDK based on PICO_SDK_PATH
+include(pico_sdk_import.cmake)
+
+project(RP2040_GBS C CXX)
+
+# Initialize the Raspberry Pi Pico SDK
+pico_sdk_init()
+
+add_executable(RP2040_GBS src/main.c)
+target_include_directories(RP2040_GBS PRIVATE inc)
+target_link_libraries(RP2040_GBS
+        pico_stdlib pico_stdio pico_bootrom pico_multicore
+        hardware_clocks hardware_pio hardware_vreg hardware_pio
+        hardware_sync hardware_pll hardware_spi hardware_irq
+        pico_binary_info)
+target_compile_definitions(RP2040_GBS PRIVATE
+        PARAM_ASSERTIONS_DISABLE_ALL=1
+        PICO_ENTER_USB_BOOT_ON_EXIT=1
+        PICO_STDIO_ENABLE_CRLF_SUPPORT=0
+        PICO_STDIO_DEFAULT_CRLF=0
+        PICO_PRINTF_SUPPORT_FLOAT=0
+        PICO_PRINTF_SUPPORT_EXPONENTIAL=0
+        PICO_PRINTF_SUPPORT_LONG_LONG=0
+        PICO_PRINTF_SUPPORT_PTRDIFF_T=0)
+
+#pico_set_binary_type(manager copy_to_ram)
+#pico_set_binary_type(manager no_flash)
+pico_enable_stdio_usb(RP2040_GBS 1)
+pico_enable_stdio_uart(RP2040_GBS 0)
+pico_add_bin_output(RP2040_GBS)
+pico_add_uf2_output(RP2040_GBS)

README.md

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+# RP2040_GBS
+
+Game Boy Sound (GBS) player for the Raspberry Pi RP2040 microcontroller. 

pico_sdk_import.cmake

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+# This is a copy of <PICO_SDK_PATH>/external/pico_sdk_import.cmake
+
+# This can be dropped into an external project to help locate this SDK
+# It should be include()ed prior to project()
+
+if (DEFINED ENV{PICO_SDK_PATH} AND (NOT PICO_SDK_PATH))
+    set(PICO_SDK_PATH $ENV{PICO_SDK_PATH})
+    message("Using PICO_SDK_PATH from environment ('${PICO_SDK_PATH}')")
+endif ()
+
+if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT} AND (NOT PICO_SDK_FETCH_FROM_GIT))
+    set(PICO_SDK_FETCH_FROM_GIT $ENV{PICO_SDK_FETCH_FROM_GIT})
+    message("Using PICO_SDK_FETCH_FROM_GIT from environment ('${PICO_SDK_FETCH_FROM_GIT}')")
+endif ()
+
+if (DEFINED ENV{PICO_SDK_FETCH_FROM_GIT_PATH} AND (NOT PICO_SDK_FETCH_FROM_GIT_PATH))
+    set(PICO_SDK_FETCH_FROM_GIT_PATH $ENV{PICO_SDK_FETCH_FROM_GIT_PATH})
+    message("Using PICO_SDK_FETCH_FROM_GIT_PATH from environment ('${PICO_SDK_FETCH_FROM_GIT_PATH}')")
+endif ()
+
+set(PICO_SDK_PATH "${PICO_SDK_PATH}" CACHE PATH "Path to the Raspberry Pi Pico SDK")
+set(PICO_SDK_FETCH_FROM_GIT "${PICO_SDK_FETCH_FROM_GIT}" CACHE BOOL "Set to ON to fetch copy of SDK from git if not otherwise locatable")
+set(PICO_SDK_FETCH_FROM_GIT_PATH "${PICO_SDK_FETCH_FROM_GIT_PATH}" CACHE FILEPATH "location to download SDK")
+
+if (NOT PICO_SDK_PATH)
+    if (PICO_SDK_FETCH_FROM_GIT)
+        include(FetchContent)
+        set(FETCHCONTENT_BASE_DIR_SAVE ${FETCHCONTENT_BASE_DIR})
+        if (PICO_SDK_FETCH_FROM_GIT_PATH)
+            get_filename_component(FETCHCONTENT_BASE_DIR "${PICO_SDK_FETCH_FROM_GIT_PATH}" REALPATH BASE_DIR "${CMAKE_SOURCE_DIR}")
+        endif ()
+        FetchContent_Declare(
+                pico_sdk
+                GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
+                GIT_TAG master
+        )
+        if (NOT pico_sdk)
+            message("Downloading Raspberry Pi Pico SDK")
+            FetchContent_Populate(pico_sdk)
+            set(PICO_SDK_PATH ${pico_sdk_SOURCE_DIR})
+        endif ()
+        set(FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR_SAVE})
+    else ()
+        message(FATAL_ERROR
+                "SDK location was not specified. Please set PICO_SDK_PATH or set PICO_SDK_FETCH_FROM_GIT to on to fetch from git."
+                )
+    endif ()
+endif ()
+
+get_filename_component(PICO_SDK_PATH "${PICO_SDK_PATH}" REALPATH BASE_DIR "${CMAKE_BINARY_DIR}")
+if (NOT EXISTS ${PICO_SDK_PATH})
+    message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' not found")
+endif ()
+
+set(PICO_SDK_INIT_CMAKE_FILE ${PICO_SDK_PATH}/pico_sdk_init.cmake)
+if (NOT EXISTS ${PICO_SDK_INIT_CMAKE_FILE})
+    message(FATAL_ERROR "Directory '${PICO_SDK_PATH}' does not appear to contain the Raspberry Pi Pico SDK")
+endif ()
+
+set(PICO_SDK_PATH ${PICO_SDK_PATH} CACHE PATH "Path to the Raspberry Pi Pico SDK" FORCE)
+
+include(${PICO_SDK_INIT_CMAKE_FILE})

src/main.c

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+/* C Headers */
+#include <stdio.h>
+
+/* RP2040 Headers */
+#include <hardware/sync.h>
+
+/* Project headers */
+#include "hedley.h"
+
+int main(void)
+{
+	puts("Hello World!");
+
+	/* Sleep forever. */
+	while(1)
+		__wfi();
+
+	HEDLEY_UNREACHABLE();
+}