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Tool/software:
Dear Brian,
We have responded back on private message to you. Can you please review the information shared and respond back please?
Ambimat Team
HI Ambimat team:
Sorry I didn't see the message from private message.
From keyboard waveform, after seeing DM goes high, host should send Se0 reset, but I didn't see SE0 from waveform.
Since all other devices works fine, Can you send keyboard to us for debug?
Best
Brian
Hi Brain
as per our last discussion we was talking about keyboard detection issue and you asked for the keyboard D+ and D- signal waveforms and I was sent it that time also and now I take current waveforms which is show in below video
So please suggest me to how we solve this issue for the same
In this Video Orange indicate DP (D+) signal and Blue indicate DM (D-) signal
Hello Brian
As per your reply we reconnect keyboard as show in below video, we take waveforms DP/DM/VBUS with keyboard and without keyboard.
So please suggest us to solve this issue
.
Here Orange is keyboard DP signal and Blue is keyboard DM signal
Hello Brian
That is not DM in beginning, at beginning is VBUS signal which is 5v, in video first up to 50 sec that is VBUS Signal then after DM signal which is 3.1V
Best
Ambimat Team