printf/cout on DSP

Michal Madej

Where is the standard output directed to on the DSP side? I am using DaVinci DM6446 using only DSPLink for communication between ARM and DSP (without codec engine). How can I read the messages printed by printf or cout on the DSP side?

over 16 years ago

0 David Meixner over 16 years ago

TI__Expert 4010 points

What environment are you programming in (CCS or Linux)? There are some tips on using printf() here. Also, you may want to try switching from printf to LOG_printf() as described in this FAQ.

0 Michal Madej over 16 years ago in reply to David Meixner

Prodigy 90 points

I am programming in Linux. I have read the links you provided. Do I understand correctly that I have to get a driver for UART to direct output to the serial port? Where can I get an appropriate driver, or do I have to write it myself?

0 Prathap Srinivas over 16 years ago in reply to Michal Madej

TI__Expert 5000 points

On Linux, based on bootargs settings(console variable which is part of bootargs) in u-boot, one can direct the logs to the serial console by default.

However if one needs to do it programatically, then i think UART driver API calls need to be supported which can be called in applications to read/write to the serial console.

Thanks,

Prathap.

0 Michal Madej over 16 years ago in reply to Prathap Srinivas

Prodigy 90 points

I do not need to do it programmaticaly if there is another option. I just want to read something from DSP side of my application somewhere (it may be serial port, or Linux console - I do not care).

Changing boot args won't just send messages from ARM side of the application to the serial port?

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printf/cout on DSP