RTT-NANO 3.1.3 线程切换问题

rtt nano长时间运行，只有main线程运行，其它线程无法执行；
复现步骤：
长时间运行，7,8小时左右；
硬件配置：HC32L130
软件环境：KEIL,RT-THREAD NANO 3.1.3
尝试：1，增加Stack_Size，怀疑是栈不够，导致PendSV_Handler无法调度，结果是还是会出现；

1，各线程中有使用rt_thread_mdelay
2，访问共享资源用到

    level = rt_hw_interrupt_disable();
    rt_hw_interrupt_enable(level);

线程信息

thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
mbss       2  ready   0x000000d8 0x00000200    57%   0x0000000a 000
mbsr       3  ready   0x00000098 0x00000300    60%   0x00000007 000
tidle      7  ready   0x00000058 0x00000100    34%   0x00000005 000
timer      4  suspend 0x00000054 0x00000080    65%   0x0000000a 000
main       2  ready   0x000000e8 0x00000300    57%   0x00000007 000
 ---  ------- ---------- ----------  ------  ---------- ---
total memory: 3824
used memory : 2848
maximum allocated memory: 2940
 ---  ------- ---------- ----------  ------  ---------- ---

keil内存配置

; Stack Configuration
; Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>

Stack_Size      EQU     0x00000400

                AREA    STACK, NOINIT, READWRITE, ALIGN=3
Stack_Mem       SPACE   Stack_Size
__initial_sp


; Heap Configuration
;  Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>

Heap_Size       EQU     0x00000000

                AREA    HEAP, NOINIT, READWRITE, ALIGN=3
__heap_base
Heap_Mem        SPACE   Heap_Size
__heap_limit


                PRESERVE8
                THUMB

内核配置

/* RT-Thread config file */

#ifndef __RTTHREAD_CFG_H__
#define __RTTHREAD_CFG_H__

#if defined(__CC_ARM) || defined(__CLANG_ARM)
#include "RTE_Components.h"

#if defined(RTE_USING_FINSH)
#define RT_USING_FINSH
#endif //RTE_USING_FINSH

#endif //(__CC_ARM) || (__CLANG_ARM)

// <<< Use Configuration Wizard in Context Menu >>>
// <h>Basic Configuration
// <o>Maximal level of thread priority <8-256>
//  <i>Default: 32
#define RT_THREAD_PRIORITY_MAX  8
// <o>OS tick per second
//  <i>Default: 1000   (1ms)
#define RT_TICK_PER_SECOND  1000
// <o>Alignment size for CPU architecture data access
//  <i>Default: 4
#define RT_ALIGN_SIZE   4
// <o>the max length of object name<2-16>
//  <i>Default: 8
#define RT_NAME_MAX    8
// <c1>Using RT-Thread components initialization
//  <i>Using RT-Thread components initialization
#define RT_USING_COMPONENTS_INIT
// </c>

#define RT_USING_USER_MAIN

// <o>the stack size of main thread<1-4086>
//  <i>Default: 512
#define RT_MAIN_THREAD_STACK_SIZE     768

// </h>


// <h>Debug Configuration
// <c1>enable kernel debug configuration
//  <i>Default: enable kernel debug configuration
//#define RT_DEBUG
// </c>
// <o>enable components initialization debug configuration<0-1>
//  <i>Default: 0
#define RT_DEBUG_INIT 0
// <c1>thread stack over flow detect
//  <i> Diable Thread stack over flow detect
//#define RT_USING_OVERFLOW_CHECK
// </c>
// </h>

// <h>Hook Configuration
// <c1>using hook
//  <i>using hook
//#define RT_USING_HOOK
// </c>
// <c1>using idle hook
//  <i>using idle hook
//#define RT_USING_IDLE_HOOK
// </c>
// </h>

// <e>Software timers Configuration
// <i> Enables user timers
#define RT_USING_TIMER_SOFT         1
#if RT_USING_TIMER_SOFT == 0
    #undef RT_USING_TIMER_SOFT
#endif
// <o>The priority level of timer thread <0-31>
//  <i>Default: 4
#define RT_TIMER_THREAD_PRIO        4
// <o>The stack size of timer thread <0-8192>
//  <i>Default: 512
#define RT_TIMER_THREAD_STACK_SIZE  128
// </e>

// <h>IPC(Inter-process communication) Configuration
// <c1>Using Semaphore
//  <i>Using Semaphore
#define RT_USING_SEMAPHORE
// </c>
// <c1>Using Mutex
//  <i>Using Mutex
#define RT_USING_MUTEX
// </c>
// <c1>Using Event
//  <i>Using Event
#define RT_USING_EVENT
// </c>
// <c1>Using MailBox
//  <i>Using MailBox
#define RT_USING_MAILBOX
// </c>
// <c1>Using Message Queue
//  <i>Using Message Queue
#define RT_USING_MESSAGEQUEUE
// </c>
// </h>

// <h>Memory Management Configuration
// <c1>Dynamic Heap Management
//  <i>Dynamic Heap Management
#define RT_USING_HEAP
// </c>
// <c1>using small memory
//  <i>using small memory
#define RT_USING_SMALL_MEM
// </c>
// <c1>using tiny size of memory
//  <i>using tiny size of memory
#define RT_USING_TINY_SIZE
// </c>
// </h>

// <h>Console Configuration
// <c1>Using console
//  <i>Using console
#define RT_USING_CONSOLE
// </c>
// <o>the buffer size of console <1-1024>
//  <i>the buffer size of console
//  <i>Default: 128  (128Byte)
#define RT_CONSOLEBUF_SIZE          128
// </h>

// <e>RT Finsh Configuration
// <i> Enables Finsh
//#define RT_USING_FINSH
#if defined(RT_USING_FINSH)
    #define FINSH_USING_MSH
    #define FINSH_USING_MSH_ONLY
    // <h>Finsh Configuration
    // <o>the priority of finsh thread <1-7>
    //  <i>the priority of finsh thread
    //  <i>Default: 6
    #define __FINSH_THREAD_PRIORITY     0
    #define FINSH_THREAD_PRIORITY       (RT_THREAD_PRIORITY_MAX / 8 * __FINSH_THREAD_PRIORITY + 1)
    // <o>the stack of finsh thread <1-4096>
    //  <i>the stack of finsh thread
    //  <i>Default: 4096  (4096Byte)
    #define FINSH_THREAD_STACK_SIZE     800
    // <o>the history lines of finsh thread <1-32>
    //  <i>the history lines of finsh thread
    //  <i>Default: 5
    #define FINSH_HISTORY_LINES         1

    #define FINSH_USING_SYMTAB
    // </h>
#endif
// <<< end of configuration section >>>

#endif

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