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Below is a list of API functions output by the Code Generator for serial peripheral interface use.

Table 3.28 API Functions: [Serial Peripheral Interface]

API Function Name	Function
R_RSPIn_Create	Performs initialization necessary to control the serial peripheral interface.
R_RSPIn_Create_UserInit	Performs user-defined initialization relating to the serial peripheral interface.
r_rspin_receive_interrupt	Performs processing in response to the receive buffer full interrupts.
r_rspin_transmit_interrupt	Performs processing in response to the transmit buffer error interrupts.
r_rspin_error_interrupt	Performs processing in response to the RSPI error interrupts.
r_rspin_idle_interrupt	Performs processing in response to the RSPI idle interrupts.
R_RSPIn_Start	Starts RSPI communication.
R_RSPIn_Stop	Ends RSPI communication.
R_RSPIn_Send	Starts RSPI transmission.
R_RSPIn_Send_Receive	Starts RSPI transmission/reception.
r_rspin_callback_receiveend	Performs processing in response to the receive buffer full interrupts.
r_rspin_callback_error	Performs processing in response to the RSPI error interrupts.
r_rspin_callback_transmitend	Performs processing in response to the RSPI idle interrupts.