This Bluetooth low energy application requires the AP33772 Sink Controller as the USB PD3.0 Type C Connector-equipped Device (TCD, Energy Sink). protocol devise. It requests the correct Power Data Object (PDO) regulation charger from USB PD3.0 Type C Connector-equipped. The latest versions of Raspberry Pi 4 are able to control the AP33772 receiver controller EVB via the I2C pin. The user guide uses the Raspberry Pi 4s Bluetooth module to send AP33772 Sink Controller data for user interface control.