Assembly code for mcu Atmega8535

I want to programme Atmega8535 mcu in order to send data in a the chip of analog devices? ADF7020-1, the chip needs data to be programmed to function as fsk receiver. We? want to load assembly code in mcu and when i set high to a pin then the mcu should take tha data from register and send it to the chip. So later? we can check if the chip works correctly.? We will use certain port for this job and i will provide all the details of the 2 boards that will be used ## Deliverables We need experts to bid only. We will use stk500 in order to check the correct functionality.