Re: [Gumstix-users] the current consumption is toooooooo... high

[Nate L. <sol...@gm...>]

I ran into the same problem.  The current consumption was too high for
my application.  I am assuming that you have just the Connex board?
If you add the AudioStix and NetStix current consumption almost
reaches 900 mA...

I tried everything I could to bring the power consumption down, but I
couldn't bring it down to desirable levels even when idle.  In the end
I went with a distributed processor system running pics for low level
control and an ATmega128 for high level logic.  Maybe someone my
knowledgeable can shed some light on this.

Sorry to be the bearer of bad news...

Cheers,

Nate L.


On 7/31/07, LIN QIU <nlv...@na...> wrote:
> Hi,
>
> the current consumption is toooooooo... high
>
> even I turn of everything, it is still at least 0.16A.
> I assume the battery is 1600mAh, then it can not last even a day.
>
> how can anyone make the current to minimal(like 5-50mA)?
> or can someone help me take a look at my "top" list? maybe I can further
> remove some module. Or is there anyone to stop the kernel running
> without shut off the whole device or reboot it.
>
> #top
> Mem: 7720K used, 55220K free, 0K shrd, 0K buff, 3948K cached
> Load average: 0.17, 0.04, 0.01    (State: S=sleeping R=running,
> W=waiting)
>
>   PID USER     STATUS   RSS  PPID %CPU %MEM COMMAND
>   359 root     R        340   319  3.8  0.5 top
>   325 root     S        528   306  0.0  0.8 dropbear
>   102 root     S <      416     1  0.0  0.6 udevd
>   326 root     S        384   325  0.0  0.6 sh
>   319 root     S        384     1  0.0  0.6 sh
>   306 root     S        348     1  0.0  0.5 dropbear
>     1 root     S        328     0  0.0  0.5 init
>   320 root     S        320     1  0.0  0.5 syslogd
>   321 root     S        300     1  0.0  0.4 klogd
>   314 daemon   S        268     1  0.0  0.4 portmap
>     8 root     SW         0     1  0.0  0.0 softirq-tasklet
>    69 root     SWN        0     1  0.0  0.0 jffs2_gcd_mtd1
>   229 root     SW<        0    15  0.0  0.0 IRQ-49
>     6 root     SW         0     1  0.0  0.0 softirq-net-rx/
>     2 root     SW         0     1  0.0  0.0 posix_cpu_timer
>    14 root     SW<        0     1  0.0  0.0 khelper
>   159 root     SW<        0    15  0.0  0.0 pccardd
>   184 root     SW<        0    15  0.0  0.0 IRQ-11
>    13 root     SW<        0     1  0.0  0.0 events/0
>    12 root     SW<        0     1  0.0  0.0 desched/0loop finished
>
> Or:
> #lsmod
> Module                  Size  Used by
> af_packet              16996  0
> g_ether                23552  0
> pxa2xx_udc             14436  1 g_ether
> gumstix_gadget          1440  1 pxa2xx_udc
> hostap_cs              55700  1
> hostap                107684  1 hostap_cs
> ieee80211_crypt         4536  1 hostap
> i2c_pxa                 6304  0
> i2c_dev                 6172  0
> i2c_core               17608  2 i2c_pxa,i2c_dev
> pxa2xx_cs               3044  3
> pxa2xx_core            10456  1 pxa2xx_cs
> pcmcia                 25276  1 hostap_cs
> pcmcia_core            31432  3 hostap_cs,pxa2xx_core,pcmcia
> firmware_class          7680  1 pcmcia
> smc91x                 16392  0
> mii                     4768  1 smc91x
> gumstix_smc91x          3040  1 smc91x
> unix                   23592  10
>
>
> LIN
>
>
>
>
>
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