SPI Port

JP22 is a port for SPI (another clocked synchronous communication protocol). The pinout is summarized in the following table.

Table 11: SPI Port (JP22) Pinout

pin #	function
1	VCC
2	SS/SLV0
3	SCK
4	MOSI
5	MISO
6	SLV1 (PG2)
7	SLV2 (PC4)
8	SLV3 (PC3)
9	SLV4 (PC2)
10	ground

This port is designed to allow the BB1 serve as a master with up to 5 slaves (selected by SLV0 to SLV4).