Strange Float to HEX number conversion by SigmaStudio

Hi There, how are you?

I'm using SigmaStudio 3.6 along with a ADAU1701 evaluation board. My objective is to update filter coefficients in real time with a PIC microcontroller, so I have to calculate the coefficients (this part is fine) and send data in 4-Byte format. However, I can't figure out what kind of FLOAT to HEX conversion sigma studio makes. For example:

Safeload Write

Time: 0:36:16 - 694ms

IC: IC 1

Cell Name: Gen Filter1_2

Param Name: EQ1940Single20B1

Param Address: 0x0000

Param Value: 0.988578677177429

Bytes: 4

Param Data:

0x00, 0x7E, 0x89, 0xBF

However, if I convert "0.988578677177429" to float on my program, I get a very different result:

0x3F, 0x7D, 0x13, 0x7E

Which is coincident with the result given by this calculator on the internet:

http://gregstoll.dyndns.org/~gregstoll/floattohex/

0x3f7d137e

So I assume that my result is correct.

I suppose there's something different about the conversion realized by SigmaStudio, maybe a different standard perhaps?

Please help me out here, I'd really appreciate your input regarding this, so I can continue developing my project.

Thanks a lot!

Best wishes,

Fernando

Audio Signal Processors

SigmaDSP Audio Processors

adau1701