SystemView system description string

pkaar · Mar 2nd 2016, 2:49pm

Hi,
I am currently evaluating SystemView for FreeRTOS. Up to now I got everything up and running. By chance I noticed, that SystemView is updating system description defined in _cbSendSystemDesc(void) approximately every 5s. I am wondering if this periodic update is required?
I checked this behavior by adding the following "debug" code to _cbSendSystemDesc(void):
static void _cbSendSystemDesc(void) {
GPIOB_PDOR ^= GPIO_PIN(17)
//
// SysView application and device description
//
SEGGER_SYSVIEW_SendSysDesc("N="SYSVIEW_APP_NAME"");
SEGGER_SYSVIEW_SendSysDesc("O=FreeRTOS");
SEGGER_SYSVIEW_SendSysDesc("D="SYSVIEW_DEVICE_NAME"");
SEGGER_SYSVIEW_SendSysDesc("C="SYSVIEW_CORE_NAME"");
//
// SysView interrupt description.
//
SEGGER_SYSVIEW_SendSysDesc("I#15=SysTick");
}

Regards, Philipp

SEGGER - Johannes · Mar 2nd 2016, 7:01pm

Hi Philipp,

Yes, this periodic update is required to be able to properly analyze recordings which do not start at the beginning.
We might make the update period configurable in a future version of SystemViewer.

Best regards
Johannes

pkaar · Mar 3rd 2016, 6:27am

Hi Johannes,
thanks for the fast reply. Since this periodic update is required, the function calls in _cbSendSystemDesc(void)should be minimized to ensure real time requirements are met.
Best regards,
Philipp

SEGGER - Johannes · Mar 3rd 2016, 10:31am

Hi Philipp,

The config file is subject to user's changes,
so feel free to modify it to merge the SEGGER_SYSVIEW_SendSysDesc() calls.
Make sure that the string length per call does not exceed 128 characters.

Regards
Johannes

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