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TMS320F28335 和MSP430f149之间的串口通信



请问

TMS320F38335与MSP430F149以及249之间的串口通信电路,两芯片的RXD\TXD可以直接交叉相连吗?也接过上拉电阻试过,430还是接收不到TMS320F28335发送过来的数据。