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testwaveform_march29

LPM4 Test Waveform


Here are the pictures of my WISP:

Front side:
front.jpg

Back side:
back.jpg

As you can see,I place a 1.8v power supply across the “Rx Enable” pin(red) and Gnd(balck).
Then I download and debug LPM4 code into WISP and probe the input and output of the comparator:
de_inout.jpg
The blue line stands for “bitline”,and the yellow stands for “compA”
I think the comparator is not working well.

The I probe the “Receive” pin with AC coupling mode and DC coupling mode,respectively:

“Receive” pin in AC coupling mode:
receive_ac.jpg
It seems there are no waveforms.

Then I choose the DC coupling mode.
“Receive” pin in DC coupling mode:
receive_dc.jpg

It seems the system doesn't work properly.

testwaveform_march29.txt · Last modified: 2018/07/11 08:26 (external edit)