Wiring of bildge pump with buzzer and float switch

Buzzer works when pump is activated through float switch.

When pump is manually switched, it does not buzz.

(Components: Power PMOS, Power NMOS, bipolar NPN, resistors)

Link to falsad circuit simulation: http://tinyurl.com/yu6lbmbc

FT800 Chip programming

1. FT800 Embedded Video Engine Datasheet

2. Application Note, AN_240, FT800 From the Ground Up

3. FT800 Series Programmer Guide