nios2 float numbers.

[PShar32]

hi, 

     I am using intel cyclone V DE1 soc board, I have made a system of nios2, shared onchip memory and HPS, the NIOS2 processor wirtes a float variable in onchip memory and a python program in HPS tries to read that..!!
but the problem is i am not able to understand how nios2 formats the float variable before storing it in memory.
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example :: I am trying to write  float 353924.531250 but when i read it it shows 0x00056684.

""it is definately not formating in IEEE 754 as document says". please explain the conversion, how 353924.531250 becomes  0x00056684 ?

regards

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Pratik Sharma

[EricMunYew_C_Intel]

Have you included floating point hardware 2 FPH2 in your Nios system. It is required to deal with floating value. 

You can refer to below.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/ug_nios2_custom_instruction.pdf

[PShar32]

Hi,

Thank you for the rely.  If .... I just add Floating point hardware 2 (FPH2) along with my nios2 and perform multiplication and division like in general, it will be able to produce result  faster then a normal NIOS2 without Floting point hardware.
and store the float values in IEEE-754 format in registers ..!!
right..?

regards

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Pratik

[EricMunYew_C_Intel]

You are right.

[EricMunYew_C_Intel · Accepted solution]

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