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用ADS1271的SPI接口模式与STM32进行通信的问题。

Other Parts Discussed in Thread: ADS1271

现在用ADS1271EVM,该模块是用两个DAS1271以菊花链式连接的,我打算用STM32F446的SPI来连接该模块。我查了手册得知ADS1271进行SPI接口模式配置后,最后在VRVD输出低电平时,可以读取Dout的数据,但是STM32的SPI有两个数据传输引脚 MISO、MOSI。这个怎么连接呀?不晓得怎么进行通讯了,请问该怎么解决呢?