28BYJ-48步进电机+ULN2003驱动程序是什么

28BYJ-48步进电机+ULN2003驱动程序（STM32）28BYJ-48步进电机+ULN2003驱动采用Keil编程基于stm32f103c8t6最小系统板基于坛友代码修改得来。引脚接线//IN4: PB6  d//IN3: PB5  c//IN2: PB4  b//IN1: PB3  a主程序main.c代码#include "stm32f10x.h"#include  "led.h"#include "delay.h"#include "step.h"i