CCS: Settings for enabling printf with floating point numbers

Sandhya NS

Other Parts Discussed in Thread: TM4C1294KCPDT

Tool/software: Code Composer Studio

Hi,

I want to use system_printf() for printing float values. I have made following settings in CCS (Version 6.2):-

1. Set Project Properties->Build->Advanced Options->LibraryFUnctionsAssumptions->Level of printf/scanf support required to "full"

2. Set Project Properties->Build->Arm Compiler->Processor Options->Specify floating point support to FPv4SPD16

When I use %f as format specifier, instead of float value, "f" got printed.

How can I resolve this ?

Regards,

Sandhya

0 ToddMullanix over 6 years ago

Hi Sandhya,

What is your System.extendedFormats set to in the .cfg file? By default we have %f disabled to minimize code footprint.

Also, what device are you on and what version of SYS/BIOS and XDCtools are you using?

Todd

0 Sandhya NS over 6 years ago in reply to ToddMullanix

Hi Todd,

I am working on TM4C1294KCPDT controller, SYS/BIOS version- 6.45, TI_RTOS - 2.16, XDCtools version - 3_32_01_22

Currently System.extendedFormats = "%$L%$S%$F" set in .cfg file.

Regards,

Sandhya

0 ToddMullanix over 6 years ago in reply to Sandhya NS

Sandhya,

To get float support, you need to add "%f" into the extendedFormats in the.cfg file.

Todd

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