The board is stuck after powering down and then powering on, and the board freezes in the spi flash initialization after pressing reset.

[Joiey]

The board is stuck after powering down and then powering on, and the board freezes in the spi flash initialization after pressing reset. Re-burning other normal Apps after resetting and then burning the App function can work normally. 板子掉电再上电后卡死，按复位后卡住在spi flash初始化。重新烧录其他正常App复位后再烧录该App功能都可正常运行。

RTThread版本4.0.5，MCU使用F411CC，onchip flash 256KB，RAM 128KB。

 \ | /
- RT -  Thread Operating System 
/ | \     4.0.5 build 2022 
2006 - 2021 Copyright by rt-thread team
do components initialization.initialize rti_board_end:0 done
initialize ulog_console_backend_init:0 done
initialize rt_hw_rtc_init:0 done
initialize stm32_pwm_init:0 done
initialize rt_i2c_core_init:0 done
initialize rt_hw_spi_flash_init

[Joiey]

逐行调试问题解决了。 问题是由于在 ulog 开启了 syslog，导致函数 sfud_device_init() 调用宏 SFUD_INFO()输出卡死。关闭 syslog 即可解决。 从源码看 ulog 在板级 INIT_BOARD_EXPORT(ulog_init) 就已经初始化，但是在 syslog 中openlog() 不知道何时初始化，虽然文档中描述openlog()是可选的并会在第一次调用时自动打开。 希望能解决该 syslog bug。

[Guozhanxin]

有什么修复的建议吗？