This the code DSP28335SPI mouth of internal self-cycle test code, you can easily test the SPI port can be within the normal communication.

spi_loopback\cc_build_Debug.log
............\Debug\DSP2833x_ADC_cal.obj
............\.....\DSP2833x_CodeStartBranch.obj
............\.....\DSP2833x_DefaultIsr.obj
............\.....\DSP2833x_GlobalVariableDefs.obj
............\.....\DSP2833x_PieCtrl.obj
............\.....\DSP2833x_PieVect.obj
............\.....\DSP2833x_Spi.obj
............\.....\DSP2833x_SysCtrl.obj
............\.....\DSP2833x_usDelay.obj
............\.....\Example_2833xSpi_FFDLB.map
............\.....\Example_2833xSpi_FFDLB.obj
............\.....\Example_2833xSpi_FFDLB.out
............\Debug
............\Debug.lkf
............\Example_2833xSpi_FFDLB.c
............\.......................CS_\FILE.CDX
............\..........................\FILE.DBF
............\..........................\FILE.FPT
............\..........................\SYMBOL.CDX
............\..........................\SYMBOL.DBF
............\..........................\SYMBOL.FPT
............\Example_2833xSpi_FFDLB.CS_
............\Example_2833xSpi_FFDLB.gel
............\Example_2833xSpi_FFDLB.paf2
............\Example_2833xSpi_FFDLB.pjt
............\Example_2833xSpi_FFDLB.sbl
spi_loopback

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