bool IB_GetBatVoltage2v2Sar(int16_t * p_batVoltageSar);
This routine will get Battery voltage 2.2 V ADC value from IB. The value can be used for Battery voltage slope and detect battery voltage
IB_BatteryCalSar_T p_batVoltageSar - the pointer to the memory stores Battery voltage ADC value
A boolean value, True means valid Battery voltage ADC IB