In this session, we will talk about the SPI write and read process. Currently, our chipset W3150A+ and W5100 supports SPI mode 0. It's important to know which mode your SPI uses. Or else it wont work at all. Please make sure that your MCU supports SPI mode 0.Anyway it is very basic to use the SPI interface. Basically you just have to follow the format below:For the write operation, you should wr..