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两个CC2640R2F收发数据正常，OV发送数据正常，但是用CC2640R2F作为主机接收 OV传感器（从机）发送的SPI数据，没有收到数据，会有哪些原因导致这个问题？
用逻辑分析仪和示波器都测出OV传感器有SPI数据发出
SPI_transfer的回覆是成功的嘛？
