Sine waveform generator

[michalt]

Posted on January 20, 2017 at 23:58

Hello,

here, 

http://www.st.com/content/ccc/resource/technical/document/application_note/05/fb/41/91/39/02/4d/1e/CD00259245.pdf/files/CD00259245.pdf/jcr:content/translations/en.CD00259245.pdf

  on page 15 is a formula for a y

SineDigital

and my question is why in this formula is 0xFFF + 1 and not just 0xFFF? 

[T J]

Posted on January 21, 2017 at 00:14

hi,

it is normal for computer to start counting at Zero.

Zero has a right to life like any other number... and in the cybersphere  Zero is usually the dominant processing flag

So, if you have 12 bit resolution it reads maximum 0xFFF, but it includes the entity called zero.

in fact you formula on page 15 is exactly that, Maximum value and the zero = 0xFFF + 1.= 4096

4096 counts = 12bit, the count starts with the 1st entity called Zero and ends at 0xFFF.

[john doe]

Posted on January 21, 2017 at 04:59

someone has to start the slow clap