Why system_printf() in hwi is bad idea??

Hi Sunil,

Generally speaking, it is not recommended to use System_printf/flush within a Hwi because the processor is halted while the data is being transferred to the console.  

If you are using SysMin as the system provider, System_printf() calls will be stored in a buffer until System_flush is called.  The processor will be halted when System_flush() is called.

If you are using SysStd is used the processor is halted on every System_printf() call.  

In order for you to make prints without actually halting the target, you can use Log prints and UIA to see the logs (link).  

Regards,

-- Emmanuel