Initial commit

Signed-off-by: Yilin Sun <imi415@imi.moe>

.drone.yml

@@ -0,0 +1,19 @@
+---
+kind: pipeline
+type: docker
+name: Build
+
+steps:
+  - name: Submodules
+    image: alpine/git
+    commands:
+      - git submodule update --init --recursive
+
+  - name: Pico SDK Build
+    image: "git.minori.work/embedded_sdk/embedded-builder-arm:latest"
+    commands:
+      - mkdir build && cd build
+      - cmake ..
+      - make
+    environment:
+      PICO_SDK_FETCH_FROM_GIT: "true"

.gitignore

@@ -0,0 +1,3 @@
+/build
+/cmake-build-*
+/venv

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.12)
+
+# Pull in SDK (must be before project)
+include(pico_sdk_import.cmake)
+
+project(hello_world C CXX ASM)
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
+
+# Initialize the SDK
+pico_sdk_init()
+
+set(TARGET_C_SOURCES
+    "src/main.c"
+)
+
+set(TARGET_INCLUDE_DIRS
+    "include"
+)
+
+set(TARGET_LIBRARIES
+    pico_stdlib
+)
+
+add_executable(${CMAKE_PROJECT_NAME} ${TARGET_C_SOURCES})
+target_include_directories(${CMAKE_PROJECT_NAME} PRIVATE ${TARGET_INCLUDE_DIRS})
+
+# Pull in our pico_stdlib which pulls in commonly used features
+target_link_libraries(${CMAKE_PROJECT_NAME} ${TARGET_LIBRARIES})
+
+# create map/bin/hex file etc.
+pico_add_extra_outputs(${CMAKE_PROJECT_NAME})
+
+# STDIO configuration
+pico_enable_stdio_usb(${CMAKE_PROJECT_NAME} 1)
+pico_enable_stdio_uart(${CMAKE_PROJECT_NAME} 0)

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 "${CMAKE_SOURCE_DIR}")
+        endif ()
+        # GIT_SUBMODULES_RECURSE was added in 3.17
+        if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.17.0")
+            FetchContent_Declare(
+                pico_sdk
+                GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
+                GIT_TAG master
+                GIT_SUBMODULES_RECURSE FALSE
+            )
+        else ()
+            FetchContent_Declare(
+                pico_sdk
+                GIT_REPOSITORY https://github.com/raspberrypi/pico-sdk
+                GIT_TAG master
+            )
+        endif ()
+
+        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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+#include <stdio.h>
+
+#include "pico/stdlib.h"
+
+int main(void) {
+    stdio_init_all();
+
+    gpio_init(PICO_DEFAULT_LED_PIN);
+    gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT);
+
+    printf("Pico: Hello world.\r\n");
+
+    for (;;) {
+        gpio_put(PICO_DEFAULT_LED_PIN, 1U);
+        sleep_ms(1000);
+        gpio_put(PICO_DEFAULT_LED_PIN, 0U);
+        sleep_ms(1000);
+    }
+    return 0;
+}