Hi,
I am using a F28027 Piccolo Launchpad and the ISR frequency I selected is 10kHz. I then interface a motor phase to one of the ADCs to convert motor voltage into digital form. I use the graph tool in CCS to observe the measured waveform. The shape of the waveform is exactly the same as measured by oscilloscope, but the period of the waveform is somehow wrong. In the grapg tool, I use a buffer of size 800 and the sampling rate is 10000 to correspond to the ISR frequency. Are there any possible reason that would cause the error?
Thank you.
Jingzhe