generate C code for a given filter
in [Matlab]
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From: Mehmet Fide on 24 Jul 2010 07:10 "Wayne King" <wmkingty(a)gmail.com> wrote in message <i1pkc7$k2f$1(a)fred.mathworks.com>... > "david t53" <david_t53(a)sogetthis.com> wrote in message <i1n8ma$ifc$1(a)fred.mathworks.com>... > > Thanks for your answer. > > > > Good, I have the Real-Time Workshop license. > > > > Can you please provide me a quick example of generating C code for > > creating a butter filter (say, N=10, wn=0.3), fixed-point arithmetics using cascaded bi-quads, and filtering an input vector? > > > > > > Regards, > > David > > Hi David, if you want a biquad structure, then you will need to have the Signal Processing Blockset and use System objects--both signalblks.DigitalFilter and signalblks.BiquadFilter (System objects) support biquad structures--The former in the case of IIR filters. In R2010a, Signal Processing Blockset has Simulink as a recommended product, but it is not required. > > By using butter(), you will not be able to implement a biquad filter structure. Basically you will implement your filter using filter() and that uses a direct form II structure transposed. > > Wayne Hi Wayne, Can you show me a sample, If I like the result, I will buy all required. Because I need such a code generation. Thanks.
From: Vincent on 28 Jul 2010 17:49 "david t53" <david_t53(a)sogetthis.com> wrote in message <i1n8ma$ifc$1(a)fred.mathworks.com>... > Thanks for your answer. > > Good, I have the Real-Time Workshop license. > > Can you please provide me a quick example of generating C code for > creating a butter filter (say, N=10, wn=0.3), fixed-point arithmetics using cascaded bi-quads, and filtering an input vector? > > > Regards, > David Hi David, I would recommend the following route: 1. filterbuilder(Hd) 2. Go to the Code Generation Tab and click Generate Model... then Realize Model 3. Connect an inport and outport to your filter block 4. Press Ctrl-E, select 'Fixed-step' for solver type and click OK 5. Press Ctrl-b to generate C code Required products: 1. MATLAB 2. Signal Processing Toolbox 3. Filter Design Toolbox 4. Fixed-Point Toolbox 5. Signal Processing Blockset 6. Simulink 7. Simulink Fixed Point 8. Real-Time Workshop Recommended product: 9. Real-Time Workshop Embedded Coder Hope this helps, Vincent
From: Vincent Pellissier on 28 Jul 2010 17:58
Vincent wrote: > "david t53" <david_t53(a)sogetthis.com> wrote in message > <i1n8ma$ifc$1(a)fred.mathworks.com>... >> Thanks for your answer. >> >> Good, I have the Real-Time Workshop license. >> >> Can you please provide me a quick example of generating C code for >> creating a butter filter (say, N=10, wn=0.3), fixed-point arithmetics >> using cascaded bi-quads, and filtering an input vector? >> >> >> Regards, >> David > > Hi David, > > I would recommend the following route: > > 1. filterbuilder(Hd) > 2. Go to the Code Generation Tab and click Generate Model... then > Realize Model > 3. Connect an inport and outport to your filter block 4. Press > Ctrl-E, select 'Fixed-step' for solver type and click OK > 5. Press Ctrl-b to generate C code > > Required products: > 1. MATLAB 2. Signal Processing Toolbox > 3. Filter Design Toolbox > 4. Fixed-Point Toolbox > 5. Signal Processing Blockset > 6. Simulink > 7. Simulink Fixed Point 8. Real-Time Workshop > > Recommended product: > 9. Real-Time Workshop Embedded Coder > Hope this helps, > > Vincent Sorry for the bad formatting. Here is what I meant to post. I would recommend the following route: 1. filterbuilder(Hd) 2. Go to the Code Generation Tab and click Generate Model... 3. Click Realize Model 4. Connect an inport and outport to your filter block 5. Press Ctrl-E, select 'Fixed-step' for solver type and click OK 6. Press Ctrl-b to generate C code Required products: 1. MATLAB 2. Signal Processing Toolbox 3. Filter Design Toolbox 4. Fixed-Point Toolbox 5. Signal Processing Blockset 6. Simulink 7. Simulink Fixed Point 8. Real-Time Workshop Recommended product: 9. Real-Time Workshop Embedded Coder Vincent |