调试串口打印hello word

在./bearpi-pico_h3863/application/samples下新建设demo目录，在然后目录中添加demo.c demo.h CMakeLists.txt三个文件
demo.c中填入

#include "common_def.h"
#include "osal_debug.h"
#include "cmsis_os2.h"
#include "app_init.h"

#define TASKS_TEST_TASK_STACK_SIZE    0x1000
#define TASKS_TEST_TASK_PRIO          (osPriority_t)(17)
#define TASKS_TEST_DURATION_MS        1000

static void *tasks_test_task(const char *arg)
{
    unused(arg);

    while (1) {
        osal_printk("shy hello word\r\n");
        osDelay(TASKS_TEST_DURATION_MS);
    }

    return NULL;
}

static void tasks_test_entry(void)
{
    osThreadAttr_t attr;

    attr.name = "TasksTask";
    attr.attr_bits = 0U;
    attr.cb_mem = NULL;
    attr.cb_size = 0U;
    attr.stack_mem = NULL;
    attr.stack_size = TASKS_TEST_TASK_STACK_SIZE;
    attr.priority = TASKS_TEST_TASK_PRIO;

    if (osThreadNew((osThreadFunc_t)tasks_test_task, NULL, &attr) == NULL) {
        /* Create task fail. */
    }
}

/* Run the tasks_test_entry. */
app_run(tasks_test_entry);

CMakeLists.txt中

    set(SOURCES_LIST
        ${CMAKE_CURRENT_SOURCE_DIR}/demo.c
    )

    set(PUBLIC_HEADER_LIST
        ${CMAKE_CURRENT_SOURCE_DIR}
    )

    set(SOURCES "${SOURCES_LIST}" PARENT_SCOPE)
    set(PUBLIC_HEADER "${PUBLIC_HEADER_LIST}" PARENT_SCOPE)

在bearpi-pico_h3863/application/samples/CMakeLists.txt中添加

if(DEFINED CONFIG_ENABLE_MY_SAMPLE)
add_subdirectory_if_exist(demo)
endif()

在earpi-pico_h3863/application/samples/Kconfig
中添加

config ENABLE_MY_SAMPLE
   bool
   prompt "Enable the Sample of demo."
   default n
   depends on SAMPLE_ENABLE
   help
       This option means enable the sample of products.

然后./build.py menuconfig ws63-liteos-app选择

编译
./build.py -c ws63-liteos-app
烧录
然后串口112500 就可以在调试串口看到