How to use printf() to display text on Serial Port terminal such as Hyper terminal?

Are you able to transmit char and strings to serial port and able to see in hyper terminal?

If yes, you can use sprintf function. I have used it and is simple.

char s1[32];

float floatvar1 = 23.456;

int intvar1 = 1234;

sprintf(s,"floatValue=%f Int Value=%d",floatvar1, intvar1);

TransmitString(s);

//result on the screen..

floatValue=23.456 IntValue=1234

Hope it helps

Joy

printf is part of the Standard 'C' Library;  clearly, it cannot know the specific details of all the interfaces on your particular target - let alone which one to use!

Therefore, you need to study the documentation for your toolset to find out how to tailor it to your specific requirements...

If you using CCS compiler, the easiest guess that it uses the same RTS library as for MSP430.

Maybe this can help:

http://processors.wiki.ti.com/index.php/Printf_support_for_MSP430_CCSTUDIO_compiler#Rerouting_printf.28.29_output

C2000 Tools section of the Wiki:

http://processors.wiki.ti.com/index.php/Category:C2000#Development_Tools

Hi, Neil

You are right, but I don't find any document that describles in detail how to tailor the printf function to adapt my requirement. All the materials I found from TI are too vague. Would you recommend some reference for me?

Thank you~

Wenlong Lee

Hi, Neil

i have retarget the printf output ot UART via re-writing the function of fputc(). Now I succeed to display the string in the terminal as I expected. However, a new problem has occured, I cannot transfer any int, or float type variants to the terminal. According to my test, the format control for int or float data has been omitted.

My current program can work when transferring string, but failed to transfer int or float data, Why? 

Thank you!

Wenlong Lee