Einarbeitung TMS320 / eZdsp board

Datasheet

TMS320VC5505 Fixed-Point Digital Signal Processor (Rev. B) (PDF 856 KB)

eZdsp Stick

http://focus.ti.com/docs/toolsw/folders/print/tmdx5505ezdsp.html

http://support.spectrumdigital.com/boards/usbstk5505/revb/

Schematics
Board schematics. PDF – 08/06/09

Test Code
Test code and board support library (CCS 4.0) for the TMS320VC5505 DSP USB STICK . ZIP – 09/01/10

– SPIROM test

SD Card Controller

http://focus.ti.com/lit/ug/sprufm2b/sprufm2b.pdf

– TMS320C674x/OMAP-L1x Processor
Multimedia Card (MMC)/
Secure Digital (SD) Card Controller

Interrupts

http://blog.21ic.com/uploadfile-/2008-1/51217.78775422.pdf

– “avoid calling other functions from within
the ISR.”

Demo Code

http://code.google.com/p/sdfatlib/

– läuft unter arduino

http://code.google.com/p/c5505-ezdsp/

– fft filter demo läuft auf eZdsp

Schätzung Grössenordnung

Min. clock f spi = samplerate * n kanäle * 16 = 44100 * 4 * 16 = 2.8224 MHz

Clock Arduino: 16 Mhz

Clock TMS320: 100MHz

Resultate

FFT-Filter läuft auf TMS320 Testplatform “eZdsp”

Nächste Schritte

  • 4h SD-Karte hardwaremässig an eZdsp-Board anschliessen
  • 8h sdfatlib auf TMS320 portieren
  • 2h DAC Baustein evaluieren
  • 8h DAC Board layouten
  • 8h DAC Software für TMS320/Arduino schreiben

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