Failure - muneeb-mbytes/FPGABoard_edgeSpartan6 GitHub Wiki

1. If the match unit is 1

M0 - match value is 0 and match function is <> , the trigger condition is M0->!M0->M0

This means it gets triggered when there is low to high transition.

But when the play button in chipscope is pressed, it waits for the trigger i.e., until the push button in the FPGA is pressed and released.

The waveform that is obtained here ripples only at the end i.e. at the release condition

M0 - match value is 1 and match function is <> , the trigger condition is !M0->M0->!M0

This means it gets triggered when there is high to low transition.

But when the play button in chipscope is pressed, it waits for the trigger i.e., until the push button in the FPGA is pressed and released.

The waveform that is obtained here ripples only at the end i.e. at the release condition

2. When push button is pressed twice within the sample buffer, still the waveform shows a bouncing effect only when the button is released.

3. When the push button is hit and held for more than a second, the waveform only shows the final bounce. It does not reflect the beginning ripple or hold window.