Configuring the SystemView Trace Recorder
Configuration is performed through the addition of the following files. The file locations are illustrated below.
(1) os_cfg_trace.h
From this file you can enable and disable the recording of the beginning and end of each of the µC/OS-III API function calls. If not enabled, the trace will only have interrupt events and the µC/OS-III scheduler events.
You can also configure the maximum number of tasks and other kernel objects to include in the trace. The code below shows an example:(2) SEGGER_RTT_Conf.h
From this file you can configure the maximum number of bytes for the ring buffer used to stream the trace data up to the host application running on the PC. Low numbers will result in less data footprint at the expense of possible dropped events due to overflows during the communication. The code below shows an example:The file
SEGGER_RTT_Conf.h contains other settings that are beyond the scope of this document. For more information on this configuration file refer to the SEGGER SystemView Documentation .
(3) SEGGER_SYSVIEW_Conf.h
From this file you can configure the maximum number of bytes for the ring buffer used to stream the trace data up to the host application running on the PC. Low numbers will result in less data footprint at the expense of possible dropped events due to overflows during the communication. The code below shows an example:From this file you also get to configure the way the trace recorder will get a system timestamp and the currently active interrupt ID. This file already has that implemented for the ARM Cortex-M and Renesas RX devices. If your device is not an ARM Cortex-M or Renesas RX, then this is the place to configure those two things.
The file SEGGER_SYSVIEW_Conf.h contains other settings that are beyond the scope of this document. For more information on this configuration file refer to the SEGGER SystemView Documentation .
(4) SEGGER_SYSVIEW_Config_uCOSIII.c
From this file you can configure the BSP function that returns the system clock in Hertz. For example:From this file you also get to configure the lowest RAM address where you intend to allocate the Trace buffer. For example:
And finally, from this file you get to register each of the interrupts you are interested in. By default, the interrupts will be displayed in the Analyzer with their vector number only. So, if you want to specify a name for the interrupts, then you can do so from this file. For example:
The file
SEGGER_SYSVIEW_Config_uCOSIII.h contains other settings that are beyond the scope of this document. For more information on this configuration file refer to the SEGGER SystemView Documentation.