一、背景
1.硬件：GD32F10x
2.软件：KEIL5
3.RTOS：RT_Thread Nano
二、操作后出现的问题
1.添加FlashDB数据库后，系统出现了hard fault on thread的错误
三、错误log
\ | /
- RT - Thread Operating System
/ | \ 3.1.3 build Dec 17 2021
2006 - 2019 Copyright by rt-thread team
[SFUD]Find a Winbond W25Q32JV flash chip. Size is 4194304 bytes.
[SFUD](FlashDB\sfud\src\sfud.c:840) Flash device reset success.
[SFUD]norflash0 flash device is initialize success.
[D/FAL] (fal_flash_init:63) Flash device | norflash0 | addr: 0x00000000 | len: 0x00400000 | blk_size: 0x00001000 |initialized finish.
[32;22m[I/FAL] ==================== FAL partition table ====================[0m
[32;22m[I/FAL] | name | flash_dev | offset | length |[0m
[32;22m[I/FAL] -------------------------------------------------------------[0m
[32;22m[I/FAL] | fdb_tsdb1 | norflash0 | 0x00000000 | 0x00100000 |[0m
[32;22m[I/FAL] | fdb_kvdb1 | norflash0 | 0x00100000 | 0x00100000 |[0m
[32;22m[I/FAL] =============================================================[0m
[32;22m[I/FAL] Flash Abstraction Layer (V0.5.0) initialize success.[0m
[FlashDB][kv][env] (FlashDB\flashdb\src\fdb_kvdb.c:1638) KVDB size is 1048576 bytes.
[FlashDB] FlashDB V1.1.0 is initialize success.
[FlashDB] You can get the latest version on https://github.com/armink/FlashDB .
psr: 0x00000000
r00: 0x00000010
r01: 0x00f01f03
r02: 0x20000714
r03: 0x001ff000
r04: 0x20000714
r05: 0x20000178
r06: 0x20000198
r07: 0x00000010
r08: 0x001ff000
r09: 0x20000714
r10: 0x00000000
r11: 0x08009a75
r12: 0x20000714
lr: 0x00000010
pc: 0x00000010
hard fault on thread: led1
thread pri status sp stack size max used left tick error
-------- --- ------- ---------- ---------- ------ ---------- ---
led1 20 ready 0x00000044 0x00000400 18% 0x00000014 000
tshell 21 ready 0x00000040 0x00000200 12% 0x0000000a 000
tidle 31 ready 0x00000040 0x00000080 50% 0x00000020 000
main 10 suspend 0x00000098 0x00000200 100% 0x00000004 000
usage fault:
SCB_CFSR_UFSR:0x02 INVSTATE
四、错误原因
1.查看线程使用情况，发现main线程使用情况为100%；---猜测是线程的栈空间设置比较小；
五、解决办法
1.将main线程修改为2048（2K），系统正常运行；