在STM32下面实现SPI驱动，关于RC531的几种SPI总线驱动，包括软件模拟实现SPI和硬件实现SPI接口，具有参考价值。-STM32 implementation in the following SPI driver, on the RC531 several SPI bus driver, including software simulation and hardware implementation to achieve SPI SPI interface, with the re

Cotex-M3驱动射频芯片RC531硬件电路，采用SPI总线，具体功能已实现，有实际参考价值。-Cotex-M3 driver RF chip RC531 hardware circuit, using SPI bus, the specific function has been achieved, are of practical value.