wangchdo opened a new pull request, #17267:
URL: https://github.com/apache/nuttx/pull/17267
## Summary
Introduce early_syslog() to enable basic logging during the very early
boot or system down stages, when the full syslog subsystem is not yet
available.
## Impact
New function added, no impact to other nuttx functions
## Testing
**test code:**
```
int main(int argc, FAR char *argv[])
{
early_syslog("\n\n######################################################\n\n");
early_syslog("Hello, Nice to meet you!!\n");
early_syslog("My name is: %s\n", "Danny");
early_syslog("My age is: %d\n", 16);
early_syslog("\n\n######################################################\n\n");
return 0;
}
```
**test log on board fvp-armv8r-aarch32**
```
nsh> hello
[ 2] nsh_main: task_spawn: name=hello entry=0x42750 file_actions=0x2000a8d0
attr=0x2000a8d4 argv=0x2000a9b4
[ 2] nsh_main: spawn_execattrs: Setting policy=2 priority=100 for pid=3
[ 2] nsh_main: nxtask_activate: hello pid=3,TCB=0x2000af20
######################################################
Hello, Nice to meet you!!
My name is: Danny
My age is: 16
######################################################
[ 3] hello: nxtask_exit: hello pid=3,TCB=0x2000af20
nsh>
nsh>
nsh>
nsh>
```
**ostest passed on board fvp-armv8r-aarch32**
<img width="663" height="710" alt="image"
src="https://github.com/user-attachments/assets/6cebc1f5-4200-4fec-967e-8525aed09e56";
/>
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