Unresolved Hardware Questions
From Openmoko
(Difference between revisions)
m (Add current intake in on and off state while charging the battery) |
|||
Line 15: | Line 15: | ||
**Observe current reading on multimeter. 1ma=5mW (approx). | **Observe current reading on multimeter. 1ma=5mW (approx). | ||
*Figures that would be of use, in order of importance. | *Figures that would be of use, in order of importance. | ||
+ | Following figures below measured from PC's root hub | ||
**Idle with backlight on at main screen. | **Idle with backlight on at main screen. | ||
+ | ***'''260 ma''' | ||
**Idle with backlight off at main screen. | **Idle with backlight off at main screen. | ||
+ | ***'''180 ma''' | ||
**Idle with backlight on, and GSM off. | **Idle with backlight on, and GSM off. | ||
**CPU maxed out - md5sum /dev/zero, backlight on | **CPU maxed out - md5sum /dev/zero, backlight on | ||
**Playing MP3 with backlight on and volume off. | **Playing MP3 with backlight on and volume off. | ||
**Playing MP3 with speakers on high, loudly. | **Playing MP3 with speakers on high, loudly. | ||
+ | ***'''300ma''' with Backlight off '''350ma''' with backlight off | ||
**Active on a call with backlight on. | **Active on a call with backlight on. | ||
**Idle running only gllin with backlight on. | **Idle running only gllin with backlight on. | ||
+ | *** unable without gllin binary. | ||
**Off | **Off | ||
**Suspended with GSM on | **Suspended with GSM on |
Revision as of 01:37, 1 August 2007
Unresolved hardware questions on the Neo1973, and other platforms.
- Questions that can probably only be answered by FIC staff
- Power managment information in Neo1973_Power_Management needs to be updated by someone with schematics.
- Questions that only require access to hardware.
- Power consumption in various modes - by someone with P1 hardware.
- Find a multimeter with a current range of at least 500mA.
- Charge your neo fully.
- Get a USB-USB extension lead - or a lead that fits the neo, one you have spare.
- Carefully remove the outer plastic covering over a short - 5cm section in the middle of the cable.
- Part any silver shielding under the wire to reveal the four insulated wires.
- Cut the red wire. (not the blue wire, or it explodes! :) )
- Strip the ends of the wires, and connect the multimeter set on 500mA to them.
- Check you have not damaged any other wires, and check that the ends of the red wires or the probes cannot short against the exposed shielding.
- Plug neo into this cable (either directly, or if it's used as a charging cable
- Observe current reading on multimeter. 1ma=5mW (approx).
- Figures that would be of use, in order of importance.
Following figures below measured from PC's root hub
- Idle with backlight on at main screen.
- 260 ma
- Idle with backlight off at main screen.
- 180 ma
- Idle with backlight on, and GSM off.
- CPU maxed out - md5sum /dev/zero, backlight on
- Playing MP3 with backlight on and volume off.
- Playing MP3 with speakers on high, loudly.
- 300ma with Backlight off 350ma with backlight off
- Active on a call with backlight on.
- Idle running only gllin with backlight on.
- unable without gllin binary.
- Off
- Suspended with GSM on
- Suspended with GSM off
- Charging with flat battery, on and off
- (h/w revision 0x0240 (P1 bv4))
- On: 496mA
- Off: 50mA
- The u-boot options controlling auto-fast charging have no effect whatsoever. Neo will only charge with 50mA when turned off (FIXME: add u-boot version)
- Idle with backlight on at main screen.
- The aim is to get the following numbers. CPU Idle and max. Backlight power. Audio power max. GSM modem max, normal and off.
- Pictures of inside of front of case.