2022-04-19T19:58:40

04_watchdog/.gitignore

@@ -0,0 +1 @@
+/build

04_watchdog/.vscode/c_cpp_properties.json

@@ -0,0 +1,18 @@
+{
+    "configurations": [
+        {
+            "name": "Linux GCC ARM",
+            "includePath": [
+                "${workspaceFolder}/**",
+                "${env:PICO_SDK_PATH}/src/**"
+            ],
+            "defines": [],
+            "compilerPath": "/usr/bin/gcc",
+            "cStandard": "c11",
+            "cppStandard": "c++17",
+            "intelliSenseMode": "linux-gcc-arm",
+            "configurationProvider": "ms-vscode.cmake-tools"
+        }
+    ],
+    "version": 4
+}

04_watchdog/CMakeLists.txt

@@ -0,0 +1,22 @@
+cmake_minimum_required(VERSION 3.13)
+
+include(pico_sdk_import.cmake)
+
+project(watchdog C CXX ASM)
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 17)
+pico_sdk_init()
+
+add_executable(watchdog
+    src/watchdog.c
+)
+
+pico_set_program_name(watchdog "Watch Dog")
+pico_set_program_version(watchdog "0.1.0")
+
+pico_enable_stdio_usb(watchdog 1) # 표준 출력을 USB로
+pico_enable_stdio_uart(watchdog 0) # 표준 출력을 UART로, 안함.
+
+pico_add_extra_outputs(watchdog)
+
+target_link_libraries(watchdog pico_stdlib)

04_watchdog/pico_sdk_import.cmake

@@ -0,0 +1,62 @@
+# 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})

04_watchdog/run

@@ -0,0 +1,43 @@
+#!/usr/bin/bash
+export PICO_SDK_PATH="/media/elex/UltraFit/pico-sdk"
+
+function fn_clean {
+    if [ -d ./build ]
+    then
+        rm -r ./build    
+    fi
+    mkdir build
+}
+
+function fn_cmake {
+    cd build
+    cmake ..
+    cd ..
+}
+
+function fn_make {
+    cd build
+    make
+    cd ..
+}
+
+if [ -z $1 ]
+then
+    fn_clean
+    fn_cmake
+    fn_make
+elif [ $1 == 'clean' ]
+then
+    echo 'Cleaning build dir.'
+    fn_clean
+elif [ $1 == 'cmake' ]
+then
+    echo 'Exec cmake'
+    fn_cmake
+elif [ $1 == 'make' ]
+then
+    echo 'Exec make'
+    fn_make
+else
+    echo 'What do you want???'
+fi

04_watchdog/src/watchdog.c

@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include "pico/stdlib.h"
+#include "hardware/watchdog.h"
+#include "hardware/gpio.h"
+#include "pico/binary_info.h"
+
+const uint LED_PIN = PICO_DEFAULT_LED_PIN;
+
+int main()
+{
+    bi_decl(bi_program_description("Watchdog Test"));
+    bi_decl(bi_1pin_with_name(LED_PIN, "On-board LED"));
+
+    stdio_init_all();
+
+    if (watchdog_caused_reboot())
+    {
+        puts("Rebooted by Watchdog");
+    }
+    else
+    {
+        puts("Clean boot");
+    }
+
+    // 3초 이상 반응이 없으면 리부트.
+    watchdog_enable(3000, false);
+
+    gpio_init(LED_PIN);
+    gpio_set_dir(LED_PIN, GPIO_OUT);
+
+    while (true)
+    {
+        // 루프가 한 번 돌 때마다 워치독을 업데이트한다.
+        watchdog_update();
+
+        printf("Currently, %u\n", time_us_32());
+
+        gpio_put(LED_PIN, true);
+        sleep_ms(250);
+        gpio_put(LED_PIN, false);
+
+        sleep_ms(1000);
+        if (time_us_32() > 15000000)
+        {
+            // 테스트를 위해서 5초가 소요되는 작업을 한다.
+            // 워치독에 의해서 리부트될 것이다.
+            sleep_ms(5000);
+        }
+    }
+}