Thank you. It worked well with 10k resistor for 50 microamperes current range for voltage applied from -700mV to 700mV.

I'm trying to get the voltage waveform being applied to the CheapStat in cyclic voltammetry using an NI USB 6009 Data Aquisition Card. The graphs obtained are irregular and have the following issues -
1.The magnitude is constant from -1.5V to 1.5V irrespective of the voltage range I set.
2. Even if number of scans is set to 1, the number of cycles are more than one and vary with the value of slope (number of cycles decrease if I increase the slope)
I checked the voltage between working and counter electrodes. If I check it between any other pair only noise is obtained.
How do I check the actual waveform and which electrode pair should I use for it?

@Will-Dickson Thank you so much for the suggestions. I could make it work with the AVRISPMKII programmer. Also, your modified firmware, especially the makefile was very helpful and made my work absolutely easy. Thank you once again.

@Will-Dickson I found out that stk500 and stk500v2 do not support PDI programming. And only these two are supported by the programmer available with me. So I think I will have to discard this one and go for an actual AVRISPMK2 programmer. I'm looking forward to your suggestions.

Thank you for all your suggestions. I tried using the programmer of the first link I sent to you through avrdude in linux by replacing -c option with both stk500 and stk500v2. It shows the following error - 'program enable instruction not defined for part "ATxmega32A4"'. The supplier of the programmer informed us that the product does not support PDI and has only ISP. We have decided to go for an AVRISPMKII programmer hoping that would solve the issue.
It would be of great help if you could suggest us the better one of the following two options or provide us the link of the supplier from where you got the hardware. Thanks in advance.
1.https://robokits.co.in/programmers/atmel-avr/avrisp-mkii-high-speed-programmer-for-mega-xmega-and-tiny-avr
2.https://www.amazon.in/HITSAN-Programmer-ATAVRISP2-AVRISPmkII-Compliant/dp/B0742C9DDY/ref=sr_1_1?ie=UTF8&qid=1528188084&sr=8-1&keywords=avr+isp+mkii
Thanks in advance.

@Will-Dickson Also if the above programmer is incompatible, can you suggest whether the following one will be compatible or not
https://robokits.co.in/programmers/atmel-avr/avrisp-mkii-high-speed-programmer-for-mega-xmega-and-tiny-avr

@Will-Dickson I'm using the AVR USB Programmer of Robokits. The following link contains the model.
https://robokits.co.in/programmers/atmel-avr/avr-usb-programmer-compatible-with-all-windows

@Will-Dickson Thank you for your advice. I'm using an AVR USB Programmer having an ISP connector. Could you please tell me whether some changes in the fuse bits are to be made? I have selected device name as AtMega32.
My programmer is not able to detect the CheapStat microcontroller. It shows "Error communicating with AVR Device. Initialize communication with your AVR Chip failed."

I'm trying to fetch the existing hex codes in CheapStat through AVRdude using WinAVR which isn't working - it shows timeout error. Are the read and write lock bits of the ATMega chip enabled?
Do we need to attach the AT25DF041A-SH-B IC in order to be able to modify the firmware?