- Wed Mar 30, 2016 4:31 am
#44508
Hey everybody 
,
So I can exploring ESP12-E, making it send temperature data (my sensor is a DS18B20, but this has nothing to do with this topic). Recently, I learned of RTC memory and how it's super useful if we want to put long delays between two measurements.
After some surfing on Internet, I found that ESP cannot stay sleeping for a period that its internal timer would not support (which is 71minutes), which is very logical. I wanted to see what would his behavior if its RTC is saturated, would it just being hung in there ? Would it wake-up even if the deepsleep period that I specified isn't reached yet ?
I did set deep sleep time to 4 hours. Well, the chip just kept waking up each 20-25 minutes, doing its duty and sleeping again. Is that normal ? 25 minutes is less that the half of its limit (71 minutes).
I called deepsleep using "ESP.deepSleep(dsleep_time, WAKE_RF_DEFAULT);". Could 25 minutes be a limit put there by the interface? Would I get the same results if I use the SDK function for deepsleep ?
One last question : What's the max duration for deepsleep that you can get ?
Take care.
EDIT : Maybe this post should go to hardware specific. I'm not really sure. Anyway, if moderators thinks the post fits in some other forum better than here, I wouldn't have any problem if it gets moved.
,So I can exploring ESP12-E, making it send temperature data (my sensor is a DS18B20, but this has nothing to do with this topic). Recently, I learned of RTC memory and how it's super useful if we want to put long delays between two measurements.
After some surfing on Internet, I found that ESP cannot stay sleeping for a period that its internal timer would not support (which is 71minutes), which is very logical. I wanted to see what would his behavior if its RTC is saturated, would it just being hung in there ? Would it wake-up even if the deepsleep period that I specified isn't reached yet ?
I did set deep sleep time to 4 hours. Well, the chip just kept waking up each 20-25 minutes, doing its duty and sleeping again. Is that normal ? 25 minutes is less that the half of its limit (71 minutes).
I called deepsleep using "ESP.deepSleep(dsleep_time, WAKE_RF_DEFAULT);". Could 25 minutes be a limit put there by the interface? Would I get the same results if I use the SDK function for deepsleep ?
One last question : What's the max duration for deepsleep that you can get ?
Take care.
EDIT : Maybe this post should go to hardware specific. I'm not really sure. Anyway, if moderators thinks the post fits in some other forum better than here, I wouldn't have any problem if it gets moved.
