Hi,
Thanks a lot!
With "echo > /sys/bus/spi/devices/spi2.0/state sleep", the current drops
from 82.125 mA to 81.562 mA within 10 minutes. The battery is fully charged
before test.
My kernel:
# uname -a
Linux om-gta02 2.6.28-rc4 #1 PREEMPT Sun Feb 8 19:53:16 CET 2009 armv4tl unknown
Before read your reply, I get nothing by removing SD card, ifdown usb0, power
off backlight.
Here is the new script I used:
#!/bin/bash
# for exit SSH shell, unplug USB
sleep 5
# strange, 1 to power of backlight
echo > /sys/class/backlight/gta02-bl/bl_power 1
echo > /sys/bus/spi/devices/spi2.0/state sleep
for ((i=0; i<20; i++)); do
echo "i = $i:"
cat /sys/class/power_supply/battery/{current_now,capacity,voltage_now}
sleep 30
done
echo > /sys/class/backlight/gta02-bl/bl_power 0
echo > /sys/bus/spi/devices/spi2.0/state normal
But comparing to your ~50 mA, 82 mA is still too large :)
Could anybody who has latest SHR installation on GTA02, give a test to verify?
Before start this script, please make sure:
1. `/sys/bus/platform/devices/neo1973-pm-gps.0/pwron` output 0, else you can
echo 0 into it.
2. disable GSM/WIFI/Bluetooth in SHR settings
3. SSH to FR through USB if you haven't connect to it.
4. stop /etc/init.d/xserver-nodm, /etc/init.d/frameworkd
5. killall batget; killall wakerd;
6. start the above script, e.g. `power.sh > output_power.txt &` , exit SSH
shell, unplug USB
10 minutes later, you can plug USB and SSH into FR again. If you can't wait for
10 minutes,
modify "sleep 30" to "sleep 5" or something else.
I'd like to say "thank you" to Rask Ingemann Lambertsen again :)
On Fri, Mar 27, 2009 at 05:21:59AM +0800, Qingyou Meng wrote:
> To set brightness: write (brightness_percent / 100 * 255) to file
> "/sys/class/backlight/gta02-bl/brightness"
I think that's why you get so high currents. This
# echo >/sys/class/backlight/gta02-bl/brightness 0
doesn't do what you hope it does. You should try
# echo
>/sys/class/i2c-adapter/i2c-0/0-0073/pcf50633-regltr.9/glamo3362.0/glamo-spi-gpio.0/spi2.0/state
sleep
also. A shorthand for that file is /sys/bus/spi/devices/spi2.0/state. When
the display isn't blanked, it reads 'normal'.
But, IMHO, consider using a higher-level interface (such as
freesmartphone.org) to turn off the display instead of trying to find all
the places to mess with under /sys yourself.
--
Rask Ingemann Lambertsen
Danish law requires addresses in e-mail to be logged and stored for a year
_______________________________________________
Openmoko community mailing list
community@lists.openmoko.org
http://lists.openmoko.org/mailman/listinfo/community
--
View this message in context:
http://n2.nabble.com/test-result-of-battery-current-against-display-brightness-and-GPS--power-mode-tp2541178p2549904.html
Sent from the Openmoko Community mailing list archive at Nabble.com.
_______________________________________________
Openmoko community mailing list
community@lists.openmoko.org
http://lists.openmoko.org/mailman/listinfo/community
