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a high current consumption about 0.9mA when i use DFU and app_button libary

Hi,

I find three different states that is related to DFU and app_button libary.

1, no DFU(that is no bootloader), but using app_button libary, there is no 0.9mA current, 2, using DFU(but single bank), no app_button libary, there is no 0.9mA current. 3 , using DFU(dual bank) and app_button libary, there is 0.9mA current.

I want to konw , what is related to the 0.9mA current on earth? Is there a conflict between app_button libary and DFU (single bank or dual bank)?

The 0.9mA current is very high for my product.

If there is a resolution way? Nobody encounter this problem? Pls help me ,, thank all of you!