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SPPDF 01 Development Suite

User’s Manual

For SPPDM-01 FIR Filter Platform

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Summary of Contents for SPPDM-01

Page 1: ...SPPDF 01 Development Suite User s Manual For SPPDM 01 FIR Filter Platform...

Page 2: ...ient Generator Immediate Mode Operation Multiple Coefficient Sets 19 Example 4 Filter Coefficient Loader Batch Mode Operation Single Set Coefficient 22 Example 5 Filter Coefficient Loader Batch Mode O...

Page 3: ...y implementing the direct applica tion physical realization and usage of the FIR filters Coefficient loading utilizes the RS232 interface on the SPPDB 01 development board to communicate with MatLabTM...

Page 4: ...dev com SPPDF 01 Development Suite User s Manual Introduction Chapter I See Figure 1 for SPPDF 01 hardware configuration Figure 1 SPPDF 01 Hardware Configuration An oscilloscope is recommended for tro...

Page 5: ...Low pass and high pass filters are easily configured but some versions of band pass and band reject filters might not converge mathematically within some of the con straints User may be required to tr...

Page 6: ...CG and FCGScript Configure the software to run under the installed version of MatLabTM by running the FCGConfig file located under the FCG directory Program Files in the Windows direc tory The FCGConf...

Page 7: ...the Maximum Bandwidth MB 100 to 20 000 Hz and the Maximum Number of Filters MNF 512 For a specific filter the Per Step Maximum Number of Filters PSMNF is calculated to be PSMNF MB Fstep This value mus...

Page 8: ...ation Immediate mode and Batch mode 12 Workspace CLICK this button whenever the set sets of filter coefficients are to be dumped into the MatLabTM Workspace This provides immediate access of the coeff...

Page 9: ...e cursor over any control or indicator in the FCG panel This tool is used to learn about a control or indicator function before its use 2 2 5 Group E Command Items 17 20 allows the user to initiate ce...

Page 10: ...oftware plug see Appendix B that groups a set of dynamically linked subroutines for translation formatting of coefficient data into a recognizable pattern of information It also uses a graphical user...

Page 11: ...t DOUBLE CLICK on the new short cut called FCL on the PC desktop to start the program The experienced user may skip the above steps by loading the MatLabTM environment going to the specific directorie...

Page 12: ...ifying the multi ple sets of coefficients as the taps for a specific group of sequentially positioned filters The number must be between 1 and 512 the MNF allowed The Filter Range To number must be eq...

Page 13: ...In Buffer Size This control enters a numeric value that specifies the size of the input queue for the selected communication port This number is not limited to a specific range of values A valid inpu...

Page 14: ...These command buttons are dummy buttons They are for features yet to be implemented They are provided as tools for the experienced pro grammer who wishes to add commands to start a specific sequence...

Page 15: ...h status at the rate of 48 kHz If the status has changed the DSP follows these steps Check D9 bit If D9 is 0 the filter number selection is set for channel one 1 if D9 is 1 the filter number selection...

Page 16: ...Second Pass band Cutoff Input Control and the Second Stop band Cutoff Input Control are disabled and no longer visible 3 Sampling Frequency Enter 48000 Hertz as the sampling frequency This value is co...

Page 17: ...eneration 12 Generate the Coefficients CLICK on Apply to start the immediate mode of coefficients generation process and send the set of coefficients to the MatLabTM workspace This also starts the Amp...

Page 18: ...it is one 1 14 Inspect results At the MatLabTM environment prompt type whos The system will respond with the information for the coefficients variable Name Size Bytes Class coefficients 1x299 2392 do...

Page 19: ...under Filter Type select Low Pass as the filter Notice that the Second Pass band Cutoff Input Control and the Second Stop band Cutoff Input Control are disabled and no longer visible An experi enced...

Page 20: ...ering this parameter 11 Select MatLabTM Workspace CLICK on the workspace location control for immediate mode of coefficients generation 12 Generate the Coefficients CLICK on Apply to start the immedia...

Page 21: ...NT Remember that when clearing or quitting the workspace the coefficients data will be lost unless the variables are saved to the workspace After saving them the coefficients may be used as desired i...

Page 22: ...location control to load the coeffi cients directly from the workspace 5 Select the communication port Select 2 as the communication port 6 Select the Parity Select None as the parity for the selected...

Page 23: ...TM environment prompt type whos The system will respond with the information for the coefficients variable Name Size Bytes Class coefficients 1x320 2560 double array global Grand total is 320 elements...

Page 24: ...tain a value that will reflect the number of sets loaded from Coefficients Location 4 Select Coefficients Location CLICK Other Location button to load the coefficients from a text file This will enabl...

Page 25: ...ver and starts the communication protocol This process is repeated as many times as there are sets to be loaded Wait for the communication protocol process to finish After successful completion of the...

Page 26: ...tform hence the dll suffix The MEX files may be called exactly into the workspace as any M function is called In the SPPDF 01 and in the Windows Platform if there is a MEX file called LINK DLL it is i...

Page 27: ...cation port to flush Example result condition RS232MEX FI 2 result condition RS232MEX fi 2 9 1 2 CloseCommPort Purpose Closes the specified communication port restores the associated interrupt vectors...

Page 28: ...int Count number of bytes to read from the selected port Example assign values to the structure element dataelement hex2dec parameter4 port 2 parameter4 data uint8 dataelement parameter4 count 2 resul...

Page 29: ...84 parameter2 port 2 parameter2 data uint8 dataelement parameter2 count 2 result condition RS232MEX WB parameter2 result condition RS232MEX wb parameter2 9 1 7 ReadToFile Purpose To read from the inpu...

Page 30: ...d write to output queue of the specified COM port Algorithm Reads bytes from a file and writes them to the output queue until EOF is encountered the byte count is met or the termination byte is encoun...

Page 31: ...the specific port int Parity parity mode for the port int DataBitsNum number of data bits int StopBitsNum number of stop bits int InQSize input queue size int OutQSize output queue size Examples resu...

Page 32: ...to provide coefficient memory access for the SPPDM 01 family of products The customer is responsible for obtaining manufacturer s data sheets and listed components for layout purposes The only item t...

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