[RTOS Support] RX62N debug console

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[FreeRTOS Home] [Live FreeRTOS Forum] [FAQ] [Archive Top] [January 2013 Threads]

RX62N debug console

Posted by Ratheesh on January 11, 2013

HI,

In my new project based on RX62N + Renesas compiler I am trying to use debug console, which files I need to add for using function "vPrintString"?

Regards,
Ratheesh.K

RE: RX62N debug console

Posted by Richard on January 13, 2013

Where did the vPrintString() come from (maybe the book examples?).

If you are using semi hosting then the C libraries need to be configured to route output to the debugger. If you are not using semi hosting then normally functions like printf() need a thin port layer to perform the actual character input and output (that part being very application dependent).

Regards.

RE: RX62N debug console

Posted by Ratheesh on January 14, 2013

HI,

Using the FreeRTOS Real Time Kernel - A Practical Guide , creating tasks example . 1 has vPrintString();
What is "Semi hosting"??

Thanks for the help.

Regards,
Ratheesh.K

RE: RX62N debug console

Posted by Richard on January 14, 2013

According to the text the messages should appear in the debug console of the IDE. That is semi-hosting, the output is shown on the host rather than via a peripheral on the target.

Are you using the configuration as described in the text? The HEW IDE with the E1 emulator?

Regards.

RE: RX62N debug console

Posted by Ratheesh on January 14, 2013

Hi,

I am using HEW IDE with E1 emulator, But when I add vPrintString() in code I am getting the following error.

L2310 (E) Undefined external symbol "_vPrintString" referenced in "P:\Codes\Bewo\Bewo\Bewo_Phase1_FreeRTOS_1112013\Bewo_Phase1_FreeRTOS_1112013\Debug\Bewo_Phase1_FreeRTOS_1112013.obj"

Regards,
Ratheesh

RE: RX62N debug console

Posted by Richard on January 14, 2013

vPrintString() is part of the demo code that comes with the books, not part of FreeRTOS. It is defined in basic_io.c, and just calls printf() wrapped in schedule disable/enable calls to ensure mutual exclusivity.

Regards.