Remaining Time in STC3115, Error.

edoardo seminara · ‎2017-06-27

Posted on June 27, 2017 at 14:35

Hello everyone,

I would like to ask a question about a problem with the integrated STC3115.

I apologize first if the question is displayed incorrectly or implicitly.

I've read some examples including the STSW-BAT001, but I find some problem with reading the remaining time of the battery in my application. I see correctly SOC and other information such as ChargeValue and Current, but the remaining time function always returns an error (-1) which is inevitable since RemTime is initially set to zero and Current is always negative when using batteries. At every call i read all the data except the remaining time.

I attach the

STSW-BAT001 example and here the

function mentioned in the Driver.c file:

/ * Remaining time calculation * /

If (BatteryData-> Current <0)

{

BatteryData-> RemTime = (BatteryData-> RemTime * 4 + BatteryData-> ChargeValue / BatteryData-> Current * 60) / 5;

If (BatteryData-> RemTime <0)

BatteryData-> RemTime = -1; / * Means no estimated time available * /

}

else

BatteryData-> RemTime = -1; / * Means no estimated time available * /

}

Also I can not understand what the measurement unit would be coming out, since ChargeValue is mAh and Current mA, i expect to get 'hours' units right?

Thanks for your help

#time #stc3115 #error #power #battery-life