Magnitude calculation by LEA

Alexey Bagaev

Genius 5505 points

Part Number: MSP430FR5994

Hi TI,

Does LEA module support magnitude calculation of complex vectors in a way such as:

mag=sqrt(real^2+img^2)

Thanks,

Alexey

over 7 years ago

0 Gary Gao over 7 years ago

TI__Mastermind 39730 points

Hi Alexey

We can do mag=real^2+img^2 refer to the MSP DSP Library : software-dl.ti.com/.../group__dsplib__transform__real.html

and the sqrt you can do it with the QMATH library:: http://www.ti.com/tool/MSP-IQMATHLIB

0 Alexey Bagaev over 7 years ago in reply to Gary Gao

Genius 5505 points

Gary,

Thank you for your reply, but this aproach does not fit well for such computations. That's why IQMath library has specific function for that to avoid overflow of 16 bit multiplication.
But I asked this question becouse LEA has many functions not implemented by the official library, including window function for FFT, long list fast move operation outside LEA memory range, etc. Even patching the commands' implementation on LEA code memory.
Just would be good to have a full stack of signal processing on LEA library.

Thanks,
Alexey

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Magnitude calculation by LEA