#include "utility/template/spi.h" void cirque_pinnacle_arduino_wrappers::SPIClass::transfer(void *tx_buf, void *rx_buf, uint32_t len); Transfer buffers of bytes to/from a SPI slave device. Parameters¶ void *tx_buf¶The pointer to a buffer of bytes to send over MOSI. void *rx_buf¶The pointer to a buffer of bytes that get received over MISO. uint32_t len¶The length of each buffer in bytes; each buffer must have equal length.