After the DMA is configured, the data of the peripheral registers can be automatically moved to the specified memory location without going through the CPU. The task of this example is to produce an orthogonal encoded signal through PA17 and PA18, which are transmitted by the DMA to a specified array by sampling PA24 and PA21. Export data from the Graph and restore the orthogonal waveform by Excel. 1000 data displayed by the serial assistant and orthogonal waveforms restored by Excel.