Remote Controlled DAC and timer

I need to develop code in C for my PIC12F675 microcontroller. I do not require a custom PCB design, but the programmer should be familiar with the PIC12F675 and its peripherals. I will provide the documentation and the programmer must be able to write the code from scratch according to the specifications. and write code comments in detail on each line of code with algorithm detail so i can map requirement with code lines. Work detail: 1. Remote interface required see below link of remote i need to interface: [login to view URL] 2. detect rising edge on pin and write interrupt routine to read ADC, LED toggle when rising edge detected. 3 if ADC data is less then threshold (adjustable from Remote), make GPIO high. 4. Auto calibration Routine mode: i. GPIO based DAC voltage control (PWM duty control) until ADC0 data is not within band( band is calibratable from remote). 5. show all above events via LED connected on one of the GPIO by Blink code. 6. write test code of each functionality which can be run by IR remote. Regard, Nilesh