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A BETTER BATTERY CHARGER

Part 2: Hardware and Software Implementation
by Thomas Richter

Start ý The Buck Converter ý Voltage Reference and Battery Temperature ý AT90S2333 Battery Charger ý ATtiny15 Battery Charger ý Charge Current ý Software Implementation ý User Settings ý Source Code ý INT Battery Function ý The Stable_ADC Function ý BC.H ý B_DEF.H ý Charge MethodýSLA.C ý Charge MethodýNiCd.C and NiMH.C ý Charge MethodýLilon.C ý Suggested Improvement ý Sources and PDF

BC.H

In the BC.H module, the bit handling macros, charge status, and termination bit mask constants are defined. The charge status indicates the battery chargerýs actual statusýfast-charging, trickle-charging, or if an error has occurred. For Li-Ion and SLA battery types, an indication of the charge mode, constant voltage, or constant current is included as well, as if Li-Ion is in the final stage of its fast-charge mode (called delay). The termination indicates the reason why the fast-charge mode was terminated or, in case of a charge error, where the error was detected. It can also be used for program debugging.

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