Supported DSP System Toolbox Blocks with Ne10 Library for ARM Cortex-A Processors

Note

The GCC ARM Cortex-A code replacement library is no longer visible in the code replacement library selector. To use the optimizations that were in this code replacement library, set the parameter Code replacement libraries to ARM Cortex-A CMSIS.

DSP System Toolbox™ Simulink^® blocks you can use with the Embedded Coder^® Support Package for ARM^® Cortex^®-A Processors require specific conditions to allow code replacement with the Ne10 library. You use this code replacement when generating C code from a model or from MATLAB^® code. The Ne10 library supports these DSP blocks only when you set specific properties, as indicated in the following table:

DSP Block	Input Requirements	Parameter Requirements	Equivalent Ne10 Functions
Discrete FIR Filter	Real values (output must also be real values). Single channel (one column). single data type.	Filter structure: Direct Form or Lattice MA. Input processing: Columns as channels (frame based). Initial states: 0. Coefficient source: Dialog parameters or Input port.	'Direct Form' structure ne10_fir_init_float ne10_fir_float_neon 'Lattice MA' structure ne10_fir_lattice_init_float ne10_fir_lattice_float_neon
FIR Decimation	Real values (output must also be real values). Single channel (one column). single data type.	Coefficient source: Dialog parameters. Filter structure: Direct Form. Input processing: Columns as channels (frame based). Rate options: Enforce single-rate processing. Allow arbitrary frame length for fixed-size input signals: Clear the parameter.	ne10_fir_decimate_init_float ne10_fir_decimate_float_neon
FIR Interpolation	Real values (output must also be real values). Single channel (one column). single data type.	Input processing: Columns as channels (frame based). Rate options: Enforce single-rate processing. Coefficient source: Dialog parameters or Input port.	ne10_fir_interpolate_init_float ne10_fir_interpolate_float_neon
FFT	Real or complex values. Single channel. single data type. Input length must equal FFT length.	FFT implementation: Radix-2. Scale result by FFT length: Off (check box is cleared). Inherit FFT length from input dimensions: Check box selected (inherit from input) or check box is cleared (specified in FFT length property). FFT length: Power of 2. Minimum length is 4 when input is complex. Minimum length is 8 when input is real.	ne10_fft_alloc_c2c_float32 ne10_fft_c2c_1d_float32_neon ne10_fft_alloc_r2c_float32 ne10_fft_r2c_1d_float32_neon Wrapper functions, each with an mw_ prefix, are provided to bridge the library interface.
IFFT	Complex values. Output can be complex or real values. Single channel. single data type. Input length must equal FFT length.	FFT implementation: Radix-2. Divide output by FFT length: On (check box is selected). Inherit FFT length from input dimensions: Check box selected (inherit from input) or check box is cleared (specified in FFT length property). FFT length: Power of 2. Minimum length is 4 when input is complex. Minimum length is 8 when input is conjugate symmetric.	ne10_fft_alloc_c2c_float32 ne10_fft_c2c_1d_float32_neon ne10_fft_alloc_r2c_float32 ne10_fft_c2r_1d_float32_neon Wrapper functions, each with an mw_ prefix, are provided to bridge the library interface.