Is there any way to read VPAD-USB state with AT command ?
I have a problem with USB that is not answered in other topic. Maybe here :
I use my own board with embedded linux 2.6.21.
SL6087 Firmware version is:R7.43.0.A1
SL6087 is in default fast idle mode.
D- is always near 0 V
I don’t see SL6087 enumeration in system. I also can’t see any transfer on D+,D- pins. It seems like SL6087 is not detected.
I can enable USB with
D+ goes to 0,09 V
D+ shrinks to 0,01 V
- Are those Values correct - D+ seems to low for me ?
- How can I check if VPAD-USB is HIgh ? (How to read this input)
- Are there any other AT commends to check USB state
Thank you for your answers,