rtthread nano 时间片轮转调度线程失败

/*
 * Copyright (c) 2006-2023, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2023-04-25     lchnu    first version
 */
#include <rtthread.h>
#define DBG_TAG "main"
#define DBG_LVL DBG_LOG
#include <rtdbg.h>
#define THREAD_PRIORITY       5
#define THREAD_STACK_SIZE     2048
#define THREAD_TIMESLICE      5
static struct rt_thread thread1, thread2;
static rt_uint8_t  thread1_stack[THREAD_STACK_SIZE];
static rt_uint8_t  thread2_stack[THREAD_STACK_SIZE];
static void thread1_entry(void *parameter)
{
    while(1)
    {
        rt_kprintf("Thread 1 is running\n");
    }
}
static void thread2_entry(void *parameter)
{
    while(1)
    {
        rt_kprintf("Thread 2 is running\n");
    }
}
int main(void)
{
    rt_err_t result;
    result = rt_thread_init(&thread1,
            "thread1",
            thread1_entry,
            RT_NULL,
            &thread1_stack[0],
            sizeof(thread1_stack),
            THREAD_PRIORITY, THREAD_TIMESLICE);
    if (result == RT_EOK)
    {
        rt_thread_startup(&thread1);
    }
    result = rt_thread_init(&thread2,
            "thread2",
            thread2_entry,
            RT_NULL,
            &thread2_stack[0],
            sizeof(thread2_stack),
            THREAD_PRIORITY, THREAD_TIMESLICE);
    if (result == RT_EOK)
    {
        rt_thread_startup(&thread2);
    }
    return 0;
}