The Debugger polling uses the SWD interface of SAM 32-bit devices and UPDI interface of AVR 8-bit devices to access the internal program counter location. It provides timestamped samples of the program counter address, allowing an insight in the program execution of the device.
Note: Debugger polling is only available when MPLAB Data Visualizer 
is run
from within MPLAB X IDE. This allows the data visualizer access the debug system on the
device through the MPLAB X IDE backend.
is run
from within MPLAB X IDE. This allows the data visualizer access the debug system on the
device through the MPLAB X IDE backend.Note: Debugger polling requires that the debugger is running, i.e., select “Debug Project”
in MPLAB X IDE.