问一下1452 的SPI CPOL CPHA 如何设置。谢谢
问一下1452 的SPI CPOL CPHA 如何设置。谢谢
The format for the SPI communications slave port is commonly known as SPI Mode 3, where clock polarity (CPOL) = 1 and clock phase (CPHA) = 1 (see Figure 35). The base value of the clock is 1. Data is captured on the rising edge of the clock, and data is propagated on the falling edge.