how to found out any printf function for debug messages?

[User.100]

I use SPC5Studio-5.8.1, and SPC574S MCU, but I can not found any printf funciton example in the serial example code. Would you help me?

[Tesla DeLorean]

If using GNU/GCC wouldn't the STDIO plumbing come out via _write() ?

Implement output to a UART you've initialized for this purpose. ​

[User.100]

Thank you for your answer. would you give me some more information.

where can I found the  via _write() ?

[Tesla DeLorean]

Check or Google newlib/syscalls.c

[User.100]

Hi Tesla,

I don't found any useful information in search newlib/syscalls.c.

and I found that SPC5Studio can not found the file of "newlib/syscalls.c".

so do you have any other suggestion?

[Giuseppe DI-GIORE]

SPC5Studio provides a component called "Runtime I/O" which implements the low lever software to enable printf().

Add "Runtime I/O" component to your project, configure it (which seria port to use) and use printf().

[User.100]

Hi Giuseppe DI-GIORE,

Thank you for your reply. I don't know how to add ​"Runtime I/O" component to my project.

Would you give me a example? I searched "Runtime I/O" in serial enabled project , but found nothing.

[Giuseppe DI-GIORE]

Select a Platform Component (right click)

Then select Runtime I/O component

[Giuseppe DI-GIORE]

Configure the serial port using the Low/Level Driver component (selecting the pin you need) and the select the just configured serial port in the Runtime I/O component.