len is the of transaction. true if transaction length of the transaction. The function needs to be blocking (either completed without issue, false by sleeping or polling) until the entirety of the SPI transactio
len is the of transaction. true if transaction length of the transaction. The function needs to be blocking (either completed without issue, false by sleeping or polling) until the entirety of the SPI transaction is otherwise. complete. Sets the chip select (CS) line of the SPI bus low. ...