Battery and charging question...

Cryptik · **Posted:** Fri Jul 20, 2012 2:24 am

Hi,

This is actually two questions....

I have a waspmote that reports a battery charge of 93% but the charging light is not on. It seems that the charging light will come on when the power drops to below 80%, but otherwise, at 93% it does not appear to charge anymore... is this normal?

The second question is... my code is putting the mote into deep sleep using the following:

Quote:

  // sleep ...then wake with RTC alarm or ACC interrupt
  dlog("sleeping... 15 sec");
  PWR.deepSleep("00:00:00:15", RTC_OFFSET, RTC_ALM1_MODE1, ALL_OFF);

The ALL_OFF includes the BAT_OFF flag. Do I need to turn the battery monitor back on before trying to check the voltage or power levels? If I do need to turn it on.. how do I do that? There does not appear to be a BAT_ON flag... Is the proper way to call SwitchesON(BAT_OFF)?

Kind regards,
Cryptik

libelium-dev · **Joined:** Mon Sep 28, 2009 1:06 pm **Posts:** 7479

Hi Cryptik,

yes, it is normal since this battery level is an approximation and the battery charger does not start the charge until it has fallen below a minimum threshold.

And yes, the battery level monitor has to be powered, but it is automatically done in the getBatteryLevel function, you don't have to worry about it.

Regards.