CODEWITHSUNDEEP
hex
GNJ
GNJ

Reputation: 11

Hexadecimal to decimal voltage Conversion

I want to convert the Hexadecimal values to voltage conversion as mentioned below,

2 Byte Signed 2s Comp Binary Fraction with Binary Point to the right of the most significant bit. 1:512V scaling. Example : 

      0x2A80 → 170.00 V 
      0xD580 → ‐170.00 V

But the 0x2A80 conversion gives me 10880 decimal value. How can i get 170.00 V from 0x2A80?

Upvotes: 1

Views: 3056

Answers (1)

wolfgang
wolfgang

Reputation: 4953

If 0x2A80 is 170.00, then that means you have 10 bits before the point and 6 bits after the point. Or in other words, you have 10880/64 == 170.

Your question seems to contain a few misconceptions:

  1. The fact that 170.0 is a voltage is irrelevant. Numbers work the same no matter whether they are voltages, distances, or just numbers without a unit.

  2. In most programming languages, you don't have "decimal" or "hexadecimal" values, you just have values. Decimal and hexadecimal only come in when you're dealing with text output and string. 0x2A80 is 10880, and 0xD580 is -10880.

If you happen to be programming in C:

short fixedPointNumber;
float floatingPointNumber;

scanf("%hx", &fixedPointNumber);
floatingPointNumber = fixedPointNumber / 64.0f;
printf("Converted number: %f\n", floatingPointNumber);

Upvotes: 1

Related Questions