MSP430FR2155: Unable to print using printf onto the console

B Nagashri

Part Number: MSP430FR2155
Other Parts Discussed in Thread: MSP430FR2676

Tool/software:

Hi TI Experts!

I am working with MSP430FR2155.

I was trying to print a few statements using printf onto the CCS console but it isn't working. I did go through this document, and did all the changes suggested in tips for using printf document as well, but still no luck. I am using SBW pins to flash the code

Just to be clear, here are the changes that I have done so far:

1. Change the heap and the stack size

2. include <stdio.h>

3.Enable the CI/O function use in the debug part of the properties.

4. Changed the printf support to full.

I am not understanding why printf is still not working and I am unable to find the C I/O console as well. Any other suggestions apart from these?

Any help is appreciated. Thanks in advance! Have a great day :)

1 month ago

0 Dennis Lehman 1 month ago

TI__Guru 61821 points

Make sure you are looking at the project output console, not the build console. From your screen shot, you are looking at the build output console.

0 Keith Barkley 1 month ago

Guru 37035 points

Also, you might want an fflush()

0 B Nagashri 1 month ago in reply to Dennis Lehman

Prodigy 60 points

Hi Dennis,

I am sorry, I uploaded the wrong screenshot. Here is the project output console.

0 B Nagashri 1 month ago in reply to Keith Barkley

Prodigy 60 points

Hey Keith,
I am not familiar with the usage of fflush(). Any thread or documents regarding the usage of it?

0 Keith Barkley 1 month ago in reply to B Nagashri

Guru 37035 points

K&R: The C programming language.

0 Dennis Lehman 1 month ago in reply to Keith Barkley

TI__Guru 61821 points

Let me try on my end to get it to work...

+1 Dennis Lehman 1 month ago in reply to Dennis Lehman

TI__Guru 61821 points

Ok, I have it working on my MSP430FR2676 (close enough to FR2155). However, and maybe it's just my setup, when printf() is called, my code stops in a file named "trgmsgc", as if there is a breakpoint, but there is none. If I hit continue the printf() message displays on the console.

See if you get the same issue and tell me if you do see output on console.

0 B Nagashri 1 month ago in reply to Keith Barkley

Prodigy 60 points

Thank you Keith!

Will try it out.

0 B Nagashri 1 month ago in reply to Dennis Lehman

Prodigy 60 points

Hello Dennis,
Thank you so much for the reply! The same thing was happening to me as well. However I read a post (This post) and followed the steps mentioned and the printf statement is working now. But, whenever I try to add a printf statement in my code I get a warning.

If I remove the printf statement, this warning doesn't occur. Any idea why this could be happening?

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MSP430FR2155: Unable to print using printf onto the console