Implementing FIR lowpass filter using code composer studio on C55X family

[Dr.VPot]

Hi guys,

i'm pretty new to dsp, i would like to implement FIR lowpass filter to a recorded audio clip using codecomposer studio on c5545 booster pack. Can someone provide me a step by step guide to build the project? I've C code for it.
https://www.ti.com/tool/BOOST5545ULP

I'm giving analog input through line in, is there a function or c code to obtain the input data samples to use it in my fir function? I would like to run the code on ccs and hear the output from headphone output.

Thanks in advance

 

[dknguyen]

Well, the first step (or one of them) is to figure out what coefficients you need. I use MATLAB and enter the "filterbuilder" command and screw around with the settings until I get a curve that I want.

https://www.mathworks.com/help/signal/ug/designing-a-fir-filter-using-filterbuilder.html

 

[Dr.VPot]

Well, the first step (or one of them) is to figure out what coefficients you need. I use MATLAB and enter the "filterbuilder" command and screw around with the settings until I get a curve that I want.

https://www.mathworks.com/help/signal/ug/designing-a-fir-filter-using-filterbuilder.html

i already did that. using matlab fdatool. Have you worked on code composer for any fir lowpass implementation before? ccsv.7 looks different

 

[Dr.VPot]

Hi can someone shed light on this? Thanks

 

[dknguyen]

Hi can someone shed light on this? Thanks

I've never gone past that point. I probably know about the math part just as much as you: just punch samples into the equation and get the output. I can't help on on what, to me, would be the hardest part which is getting the samples in...that's probably just playing it back somehow and sampling it with an ADC.

 

[Dr.VPot]

I've never gone past that point. I probably know about the math part just as much as you: just punch samples into the equation and get the output. I can't help on on what, to me, would be the hardest part which is getting the samples in...that's probably just playing it back somehow and sampling it with an ADC.

ok, i implemented an example project from c5545 boosterpack software folder to build using code composer studio, with following attached build errors.