[ts-7000] ADC problem, working on ts-7395 with Cirrus EP9302

["sangelion" <>]

I try to compile the ts-7250 program and does not get the exact value as the 
power supply value.. 

Power supply ---> SBC
0.0V ---> 1.567V
1.0V ---> 2.158V
2.0V ---> 2.745V
3.3V ---> 3.430V               

Why the full scale need to add with 0x10000?
What is the value 2.5? and is't 3.3 is the Vref?
Why is 0x10000, 0x7000, 0x9E58 and 0xC350 functions?


read_7xxx_adc(adc_result);

        if(virgin == TRUE)
                printf("No calibration values found...\n");
        else
                printf("Board has been calibrated by Technologic Systems...\n");


        //Convert to voltage
        for(i = 0; i < 5; i++)
        {
                avg = 0;
                
                full_scale = (((((double)(stored_cal[i][1] + 0x10000) 
                        - stored_cal[i][0]) / 2.5 ) * 3.3 )); 

                for(j = 0; j < 10; j++)
                        avg = adc_result[i][j] + avg;

                avg = avg / 10;
                        
                if(avg < 0x7000)
                        avg = avg + 0x10000;

                if(virgin == TRUE)  //use approximation
                {
                        avg = avg - 0x9E58;
                        val = ((double)avg * 3.3) / 0xC350;
                }
                else                //use calibration values
                {
                        avg = avg - stored_cal[i][0];
                        val = ((double)avg * 3.3) / full_scale;
                }
        
                printf("Channel %d: %3.3fV\n", i, val);
        }



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