自己按照datasheet画的PCB,移植官方代码到stm32,通过带ss的spi通讯,用TRF7970 EVM control能读写寄存器,但是一直读不到卡,find tags也一直找不到东西
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自己按照datasheet画的PCB,移植官方代码到stm32,通过带ss的spi通讯,用TRF7970 EVM control能读写寄存器,但是一直读不到卡,find tags也一直找不到东西