RTOS/TM4C129XNCZAD: inet_pton not working

Peter Borenstein

Part Number: TM4C129XNCZAD

Tool/software: TI-RTOS

I am trying to convert an IPv4 address to a string.

int a = inet_pton(AF_INET, ipAddrInputStr, &ipAddrInputStruct);

The chip seems to be failing to compare 2 == 2. The debugger show that af is 2. AF_INET is 2 in socketndk.h. Somehow the chip moves to the bottom else statement.

over 7 years ago

0 Peter Borenstein over 7 years ago

Mastermind 8695 points

The function always returns the expected value.

Could CCS be lying about where the program counter is?

The next step over command results in the arrow jumping back up to line 225.

0 David Friedland over 7 years ago in reply to Peter Borenstein

TI__Mastermind 18320 points

Have you tried building with optimization turned off (or at least down)?

0 Peter Borenstein over 7 years ago in reply to David Friedland

Mastermind 8695 points

I have optimizations turned off, but I don't think I'm actually compiling this file. Changes made to this file do not take effect when debugging. CCS will step through phantom C code as if stepping through the file without edits.

The file is inetaddr.c which is part of the NDK Nettools.

I assume CCS is using a pre-compiled library (with some optimization) and somehow knows that the binary is related to this C file. I think this is set up by XGCONF and I'm loath to tinker with it. Its pretty big assumption...

0 Peter Borenstein over 7 years ago in reply to David Friedland

Mastermind 8695 points

Slightly related question, why is a 5th dot separated number accepted in inet_aton()?

This function will accept string "192.168.0.1.34" and return a return an IP struct that only has 192.168.0.1.

There's a comment in the code /* We want to accept: "1.2.3.4.in-addr.arpa" */. What does this mean?

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RTOS/TM4C129XNCZAD: inet_pton not working