Date: Mon, 5 Aug 96 11:23:30 CDT From: Tim Baggett To: pdeleon@nmsu.edu Subject: Re: spectrum analyzer ---------- X-Sun-Data-Type: text X-Sun-Data-Description: text X-Sun-Data-Name: text X-Sun-Content-Lines: 47 The KC7WW collection of software for the 56002EVM that Johan put together can be found at http://www.tapr.org/home/dsp/evm56k/collection.html The software is put together by hobbiest and is in no way production ready, although I am helping clean it up too. I am including all the files you will need for the spectrum analyzer, all compiled and ready for execution. The included source code is in the weaksig.zip file that is in the main collection. To run the spectrum analyzer: 1) place 4 jumpers on the EVM: 2 jumpers on J8 in the same direction as the first two jumpers ( this connects the xmt and rcv lines to the rs232 connector P5) 1 jumper on J10 PC0 1 jumper on J10 PC1 These jumeprs connect the DSPs SCI to the rs232 connector. 2) connect the serial cable from the PC to the OnCE connector to the EVM 3) start the domain debugger evm56k and download bios.cld 4) Next download fft-ssb.cld (or fft-cw.cld) 5) start the DSP executing the code (go 0) and conenct audio in to IN and audio out to OUT (duh) 6) quit the domain debugger. 7) Disconnect the rs232 cable from the OnCE connector and reconnect to the SCI port P5 on the EVM 8) start the host program running on the pc fft-ssb.exe comX (or fft-cw.exe comX) where comX is com1, com2 or whatever the com port is that the cable is conencted to. fft-sbb has about a 3KHz bandwidth I guess. I do not know. fft-cw is much much much narrower, possible 500 hz or narrower. These tools were meant for the detection of SSB and CW (morse code) signals over HF channels. GL Tim