Closed Bug 979391 Opened 10 years ago Closed 6 years ago

Add switchable USB in/out plugs to the ammeter

Categories

(Powertool Graveyard :: Hardware, defect, P3)

Product:
Powertool Graveyard
Component:
Hardware
Platform:
x86_64
Windows 7
Type:
defect

Tracking

(Not tracked)

Status:
RESOLVED WONTFIX

People

(Reporter: jhylands, Assigned: jhylands)

Details

(Keywords: perf, Whiteboard: [c=power p=5 s= u=] ) 

In order to use the battery harness/ammeter with a phone, the phone cannot be plugged in via USB. However, most testing frameworks require the phone be connected at least some of the time while testing. Manually unplugging and replugging is not an option for large scale testing, but having a software switch can help.

Design and build a new version of the ammeter that includes 2 new USB connections, and have a programmatically controlled switch on the power line between the two USB connectors. One of the connectors should be a standard USB A connector, the other should be a Micro B connector.
Assignee: nobody → jhylands
Status: NEW → ASSIGNED
Keywords: perf
Whiteboard: [c=power p= s= u=]
Whiteboard: [c=power p= s= u=] → [c=power p=5 s= u=]
This is a lower priority item now that we have verified the Flame (Mozilla reference phone) has switchable USB charging, and we can access that via:

adb shell "echo 0 > /sys/class/power_supply/battery/charging_enabled"
adb shell "echo 1 > /sys/class/power_supply/battery/charging_enabled"

The first command turns off USB charging, and the second command turns it back on again.

We will still want to implement this bug eventually for profiling on other devices that don't support this feature (Tarako).
Priority: -- → P3
This project isn't maintained anymore.
Status: ASSIGNED → RESOLVED
Closed: 6 years ago
Resolution: --- → WONTFIX
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