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关于CC3000SPI输入问题

Other Parts Discussed in Thread: LM1117

我用stm32MCU控制CC3000,在SPI传输数据时遇到问题:stm32的SPI输出口(MOSI)给CC3000传输数据时,低电平被拉高2V(高电平好好的3.3V)。(stm32SPI输出口没上拉,而且配置为复用推挽输出)。如果没接CC3000就正常。。。请问大家这是为什么呢?

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