给大家来个步进电机的程序

ID:198235 · 发表于 2017-9-21 18:01

#include "keyboard.h"

unsigned char keySta[] = {1,1,1,1,1,1,1};//按键状态
unsigned int keyTime[] = {0,0};
unsigned char keyCnt[] = {0,0};
extern void CheckKey(unsigned char key);
void ScanKey()
{
static unsigned char keyBuff[] = {0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F};//保存按键状态
unsigned char i;

keyBuff[0] = (keyBuff[0] << 1)|Key0;//读取按键状态
keyBuff[1] = (keyBuff[1] << 1)|Key1;//读取按键状态
keyBuff[2] = (keyBuff[2] << 1)|Key2;//读取按键状态
keyBuff[3] = (keyBuff[3] << 1)|Key3;//读取按键状态
keyBuff[4] = (keyBuff[4] << 1)|Key4;//读取按键状态
keyBuff[5] = (keyBuff[5] << 1)|Key5;//读取按键状态
keyBuff[6] = (keyBuff[6] << 1)|Key6;//读取按键状态
for(i = 0;i < 7;i++)
{
if((keyBuff[i]&0x0F) == 0x0F)//判断按键是不是弹起
{
keySta[i] = 1;
if(i == 2)
{
keyCnt[0] = 0;
keyTime[0] = 0;
}
else if(i == 3)
{
keyCnt[1] = 0;
keyTime[1] = 0;
}
}
else if((keyBuff[i]&0x0F) == 0x00)//判断按键是不是按下
{
keySta[i] = 0;
if(i == 2)
{
keyCnt[0]++;
if(keyCnt[0] >= 200)
{
keyCnt[0] = 0;
keyTime[0]++;//为长按键输入加
}
}
else if(i == 3)
{
keyCnt[1]++;
if(keyCnt[1] >= 200)
{
keyCnt[1] = 0;
keyTime[1]++;//为长按键输入减
}
}
}
}
}
void KeyDrive()
{
static unsigned char keyBack[] = {1,1,1,1,1,1,1};//保存更改后的按键
static unsigned int keyTim[] = {3,3};//第一次大于600毫秒才长按输入，以后每200毫秒输入一次
unsigned char i;

for(i = 0;i < 7;i++)
{
if((keyBack[i] != keySta[i]))//如果按键状态更改
{
if(keySta[i] == 0)//如果是按下了某个按键
{
CheckKey(i);
}
keyBack[i] = keySta[i];
}
}
if(keyTime[0] > 0)//长按加
{
if(keyTime[0] > keyTim[0])
{
CheckKey(2);
keyTim[0]++;
}
}
else
{
keyTim[0] = 3;
}
if(keyTime[1] > 0)//长按减
{
if(keyTime[1] > keyTim[1])
{
CheckKey(3);
keyTim[1]++;
}
}
else
{
keyTim[1] = 3;
}
}

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