Problem at reported Impedance data by CN0510: Invalid Impedance Values

sure !

I'm using codes which are available on GitHub. this is the link:

https://github.com/analogdevicesinc/ad5940-examples/tree/master/examples/AD5940_BATImpedance/NUCLEO-F411

github.com/.../AD5940_BATImpedance

According to the Link above, it is possible to connect CN0510 Board to the NUCLEO-F411RE Board. there is a written code for Nucleo-F411RE board.

yes I replicated the setup mentioned in the Application Note of CN0510.

I set the code(based on the setting in the application Note of CN0510) to generate Sweep Excitation signal in desired range, but when I load the code on the board and measure the Excitation signal on the oscilloscope I only have excitation signal in the first step of the sweep and after few seconds the excitation signal vanishes. after few moment results of impedance measurements come up on the serial monitor but they are irrelevant, I think this is considerable because there isn't any signal in the excitation sweep except for the first step, but my question is why I can see results of measurements at those frequency steps while they aren't stimulated? 

No I can not remove the battery because it is powering the Darlington pair at the same time, I cannot get DC voltage from a passive resistor.

The impedance of the battery which I am testing is in the range of the calibration Resistor placed on the CN0510 that is 50 mili-ohms.

I have seen some identical issues on the following link but it hasn't been answered properly yet:

ez.analog.com/.../eval-adicup3029-eval-ad5941batz-ad5940_batimpedance-problems

Could it be a problem with the Keil compiler version I'm using?

any clue or help is gratefully appreciated!