How to monitor a structure pointer in live expression window?

[ledi7]

Hi,

i want to monitor the following statement (the value of p_Payload[]) during debugging process in the Live Expression Window of CubeIDE:

 

if(p_Notification->DataTransfered.p_Payload[0] == 0x02)

 

I added the following statement to the Live Expression Window

 

and tried a few other variations, but without succes.

Can somebody help?

[Ghofrane GSOURI]

Hello @ledi7 

To monitor the actual values in p_Payload , you should use the correct syntax based on what you want to see:

To see the first element of the payload:

p_Notification->DataTransfered.p_Payload[0]

To see the entire array (if you know its size), you can use:

p_Notification->DataTransfered.p_Payload[0] // for first element
p_Notification->DataTransfered.p_Payload[1] // for second element, etc.

If you want to dereference and see a single value:

*(p_Notification->DataTransfered.p_Payload)

 

[ledi7]

Hello @Ghofrane GSOURI ,

thank's for your reply. That works in "Expression Window"

but not in "Live Expression Window" as you can see here:

[Ghofrane GSOURI]

Hello @ledi7 

Try  to remove the expression and re-add it.

Please check this post , it could help you solve the issue.

I will be waiting for your feedback.

THX

Ghofrane

[ledi7]

Hello @Ghofrane GSOURI 

as mentioned in the post you suggested, i changed debugging and optimization level for the compiler.I tried to set the optimization level in the Build Settings to level "Optimize for Debug (-Og)" and "None (-O0)".

Then i removed and re-added the entries in the "Live Expression Window". But nothing has changed, same result as bevore.

I am working with CubeIDE1.16.1 and using the BLE example "BLE_p2pServer_ota" with the NUCLEO-WBA55 board. Here, most of .c and .h files from the firmware package are linked. Could this triggers the issue?

 

[Ghofrane GSOURI]

Hello @ledi7 

Could you please verify that the Live Expressions is enabled in your configuration.

To do that please follow those steps:

1- right-clicking on your project in the Project Explorer and selecting Debug as-->1 STM32 C/C++ application

Go to Debugger and make sure that the live expression option is tick then press OK

 

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