MSP430F149超声波测距(共2页).docx

精选优质文档-倾情为你奉上/P1.0发出信号，P4.0接收信号，将距离显示到显示屏上#include #include 12864.h#define CPU_F (double) #define DelayUs(x) _delay_cycles(unsigned long)(CPU_F*(double)x/.0) #define DelayMs(x) _delay_cycles(unsigned long)(CPU_F*(double)x/1000.0) unsigned int width; float float_range; unsigned int_range; unsigned int i=0; unsigned int int_range100,int_range10,int_range1; void StartModule() P1OUT|=BIT0; DelayUs(100); P1OUT&=BIT0; Delay