circuit design for line debugging

[mdever]

I'm employing 51822AA.

I need to debug firmware for this chip line by line. Like environment of ARM9 with Lauterbach TRACE32 through JTAG.

Is line debugging possible with Segger's JTAG Base through just 4 pins(GND, VRF, DIO, CLK)?

Or any reference circuit design capable of line debugging with any in-circuit-debugger?

I can't see any change of data in real time.

[Turbo J]

You can basically forget line-by-line debugging as soon as you turn on the bluetooth softdevice - as this needs uninterrupted CPU.