class SPI – a master-driven serial protocol¶
SPI is a serial protocol that is driven by a master. At the physical level there are 3 lines: SCK, MOSI, MISO.
Additional methods for SPI:
data = spi.send_recv(b'1234') # send 4 bytes and receive 4 bytes buf = bytearray(4) spi.send_recv(b'1234', buf) # send 4 bytes and receive 4 into buf spi.send_recv(buf, buf) # send/recv 4 bytes from/to buf