Research And Implementation Of Software Technology On Several Functions Of Oscilloscope Based On OMAP-L138

With the development of the electronic technology, The oscilloscope has a moreprominent position in the field of testing.And the bandwidth and complexity of signalnot only required the oscilloscope to complete the function of signal acquisition anddisplay,but also require the oscilloscope to integrate more functions in one to make itmore scalable, higher accuracy and complexity.The topic researched and implemented the software technology on severalfunctions of oscilloscope based on OMAP-L138which included ARM core and DSPcore.In the oscilloscope the ARM is completed user interface and peripheral drivedesign,and the DSP is completed the waveform data processing The followingfunctions based on TMS320C6748DSP.1.The3D mapping function of XY mode: this function presents the3D waveformin a single acquisition and multiple acquisitions in the design scheme of XY displaymode; it adopts the way of power transformation instead of the traditional linearapproach to dealing with the color of three-dimensional wave innovatively.2.Serial protocol analysis function: this function adopts the design of combinationof FPGA+OMAPL138hardware and software. The advantage of the design improvesthe speed and efficiency of serial protocol analysis. This topic is mainly about theserial bus decoding of RS-232,I2C,SPI and the display of decoded data packet.3.AUTOSET function: The new design scheme of AUTOSET function whichchanges the sequence of scaling of frequency and amplitude, the advantage of whichreduce the time during an amplitude shift Through the test, achieve the comparison ofefficiency between the new design scheme and the original one, summarize the meritsand demerits of the new design scheme to offer the reference for the subsequent designof the AUTOSET function.The three functions of this topic have achieved the desired objectives by softwaredebugging and verification and could be used by user through the button.