Embedded Digital Oscilloscope Based on ARM9 and uC/OS-II
Cheng Yan-kui · Microcomputer Information · 2009
This paper introduces one design method of embedded digital oscilloscope based on ARM9 and the uC/OS-Ⅱ.The hard-ware adopts ARM9 and FIFO structure to realize the 4 channel data synchronizations.The software uses the uC/OS-Ⅱ platform to re-alize the multi-duty movement and the real-time processing.The complete machine test indicates that this embedded digital oscillo-scope supports 4 channel inputs and the sampling frequency scope is 2 KHz～20 MHz.Its input voltage scope is:0 ～ +4V.The pre-cision of the frequency,the pulse width and the peak-to-peak value is ±0.5%.It has good man-machine interaction contact surface and can be inserted into intelligence instrument as a general module.