PORTS Forum

Ports and Interfaces => USB => Topic started by: johsey on June 26, 2014, 12:06:29 pm

Title: USB suspend current measurement
Post by: johsey on June 26, 2014, 12:06:29 pm

Hello,

Is there an easy way to manually put a USB Mass Storage device into suspend mode in order to measure the current drawn by it?

Thank you in advance.

Title: Re: USB suspend current measurement
Post by: Jan Axelson on June 26, 2014, 12:42:52 pm

Use the pwrtest utility to put the system in S1 or S3.

For some reason, it's not in the 8.1 WDK, but it's in 8.0:

http://msdn.microsoft.com/en-us/library/windows/hardware/ff550682%28v=vs.85%29.aspx

Title: Re: USB suspend current measurement
Post by: johsey on July 02, 2014, 11:34:39 am

I'll try this tool.

Thank you.