msp430f2013没有串口，本设计通过运用芯片上的定时器Timer的捕获与比较来模拟实现串口TXD与RXD功能，通讯波特率为24-msp430f2013 no serial port, this design through the use of on-chip timer Timer capture and compare simulated and RXD Serial TXD function, communication b