STC单片机(无PWM模块)的步进电机驱动程序C语言.doc

基于STC单片机（无PWM模块）的步进电机驱动程序C语言2009-04-08 14:03/从不明白到调试通以后，才发现是超级简单。#include STC12C2052AD.H#include #include 12C56(54)_mode.h#include type.hunsigned int int_flag;/unsigned long int i = 0;void delay(unsigned long int i);void Int0Int(void);void motor_ccw();void motor_cw();void main(void)/初始化IO/P1.4-P1.7为开漏，P1.0-P1.3为准双向口（传统8051 I/O口模式）P1M0 = 0xf0; P1M1 = 0xf0;/ 定义中断触发方式为INT0,INT1 低电平触发TCON = INT0_LOW; /初始化中断 IE = EnINT0_C|EnINT1_C; /允许INT0,INT1中断IPH = NOIP_C; / 此处不设优先级IP = NOIP_C;/初始化变量/ EA = true; / 启动中断，开始正常工作EA = false; /关中断int_flag = 0; P1 = 0x00;while (1)if (INT0 = 0) motor_ccw(); P17 = 1; else if (INT1 = 0) motor_cw(); P16 = 1; /* switch(int_flag) case zoom_in : motor_ccw(); break; case zoom_out : motor_cw(); break; default: break; */ / int_flag = 0;void delay(unsigned long int i)/unsigned long int i; for(;i0;i-); / _nop_(); /执行一次需要一个机器指令，一个机器指令所需时间为：T12/fosc=12/11059200=1.085us/ /*/* Int0 （P3.2） 中断服务 */* Int0 （P3.2） 中断服务 */*/void Int0Int(void) interrupt 0 using 1int_flag = 1;/ motor_cw();P14 = 0;void Int1Int(void) interrupt 2 using 1int_flag = 2;/ motor_ccw();P15 = 0; /*/* 马 达 控 制 */* CCW为逆时针反转，CW为顺时针正转 */*/void motor_ccw() /逆时针 P1 = 0x09;delay(2000); /延时约2MSP1 = 0x05;delay(2000);P1 = 0x06;delay(2000);P1 = 0x0A;delay(2000);void motor_cw() /顺时针 P1 = 0x0A;delay(2000);P1 = 0X06;delay(2000);P1 = 0X05;delay(2000);P1 = 0X09;delay(2000); 基于STC单片机（无PWM模块）的步进电机驱动C语言程序/从不明白到调试通以后，才发现是超级简单。#include STC12C2052AD.H#include #include 12C56(54)_mode.h#include type.hunsigned int int_flag;/unsigned long int i = 0;void delay(unsigned long int i);void Int0Int(void);void motor_ccw();void motor_cw();void main(void)/初始化IO/P1.4-P1.7为开漏，