STM32F1硬件SPI

STM32F1系列芯片具备硬件SPI控制器，支持SPI通信。根据不同型号，STM32F1芯片可以具备一个或多个SPI控制器。SPI（Serial Peripheral Interface）是一种串行外设通信接口，用于实现设备之间的通信。SPI通信由CS、SCK、MISO、MOSI四根通信线连接而成。在使用STM32F1作为SPI主机时，可以配置NSS输出使能，通过SPI_CR2寄存器的SSOE位使能NSS输出。这时，NSS引脚会被拉低，与主SPI的NSS引脚相连的NSS引脚会自动变成从的SPI设备。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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