本代码是基于IAR的MSP430的频率计设计，MSP430内部定时器TIMEA采用捕获周期计数法测频，测频范围1HZ~32K，精度为1HZ，并采用12864显示-The code is based on the MSP430 IAR frequency meter design, MSP430 internal timer TIMEA capture cycle counting method using frequency measurement, frequency measurement