Comments (3)
I can confirm this issue.
The problem is that the BH1750 library does not always write the default MTreg to the device upon begin(). Rather, it assumes (sometimes falsely so) that the device uses the default MTreg on start. That is not true, if the program is reset (eg waking from deep sleep or rebooting) without giving a full power interrupt, which could reset MTreg on the BH1750.
The solution seems straight forward: setup() should always call
setMTreg( (byte) BH1750_MTreg )
or alt
setMTreg( (byte)BH1750_DEFAULT_MTREG )
to ensure that MTreg on device (BH1750) and object (library) mathches.
/Bjarne
from bh1750.
As a work-around, I will suggest to manually call setMTreg()
right after begin()
, as per:
setup(){
...
lightMeter.begin(BH1750::CONTINUOUS_HIGH_RES_MODE);
lightMeter.setMTreg((byte) BH1750_DEFAULT_MTREG);
...
}
from bh1750.
Line 79 in 38e9f37
@claws what about this?
return (configure(mode) && setMTreg((byte) BH1750_DEFAULT_MTREG))
from bh1750.
Related Issues (20)
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from bh1750.