Sansa fuse Plus battery calibration

[fennectech]

Okay so i bought a fuse plus the other day and i am VERRY happy with it   rockbox was the first thing i did to it but im noticng one little thing  and that it doesnt charge over 95 percent  so i did a battery bench   from 85 percent to zero    took over 30 hours to discharge playing my library with headphones  ill attach the file

[saratoga]

http://git.rockbox.org/?p=rockbox.git;a=blob;f=firmware/target/arm/imx233/sansa-fuzeplus/powermgmt-fuzeplus.c;h=af87d7045d770f44cff3c79b57599d697f04332d;hb=HEAD

Looks like 100% is defined to be 4230 mV, whereas your maxes out 50 mV less.  Probably just normal variation in battery voltage and meter accuracy.

[fennectech]

can i change the definition and recompile it?

[fennectech]

im also going to charge with the boot loader  is there a way i can ajust that too?   when its fully charged ill report

[saratoga]

can i change the definition and recompile it?

Of course.  This is an open source project, you can build the source yourself if you want. 

[fennectech]

4183 millevolts seems to be the top for mine  can someone point me in the right direction as to getting it working  wich files contain the definitions

[saratoga]

4183 millevolts seems to be the top for mine  can someone point me in the right direction as to getting it working  wich files contain the definitions

See my first reply to this thread. 

[fennectech]

{ 3100, 3650, 3720, 3750, 3780, 3820, 3880, 4000, 4040, 4125, 4230 },
so i just change 4230 to my arbitrary value?  then make target?

[saratoga]

That should do it.

[fennectech]

where can i find this file in the git on my filesystem   *arch is making the cross compiler*

[fennectech]

Okay  it worked kind of  but the bootloaders charge thing is flipping between 83 and 100 percent
    { 3100, 3650, 3720, 3750, 3780, 3820, 3880, 4000, 4040, 4125, 4170 },  this is my current version of that line

[fennectech]

can somebody help me in figuring out accurate values for these numbers?
{
    /* Sansa Fuze+ Li Ion 600mAH figured from discharge curve */
    { 3100, 3650, 3720, 3750, 3780, 3820, 3880, 4000, 4040, 4125, 4170 },
};

/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
const unsigned short percent_to_volt_charge[11] =
{
    /* Sansa Fuze+ Li Ion 600mAH figured from charge curve */
    3480, 3790, 3845, 3880, 3900, 3935, 4005, 4070, 4150, 4250, 4335
};

[fennectech]

what information would i need to start?

[saratoga]

Maybe, what are you actually trying to do?  Asking for help isn't much use if you don't explain the problem. 

[fennectech]

i am trying to make the battery indicator true to my battery