From the datasheet:   Double-check if this is working as expected https://github.com/EmotiBit/EmotiBit_MAX30101/blob/d92268f897fb5f4269a5a03fb26f3ffb27d14bd8/src/MAX30105.cpp#L532 Don't we have to enable SLOT_ 4 to use the current from that slot? https://github.com/EmotiBit/EmotiBit_MAX30101/blob/d92268f897fb5f4269a5a03fb26f3ffb27d14bd8/src/MAX30105.cpp#L539