STM32正交增量編碼器源碼外部中斷與查詢法2個程序

ID:276828 · 發(fā)表于 2018-11-4 08:32

STM32正交增量編碼器

單片機源程序如下（外部中斷法）:

#include "STM32F1.h"
u16 Parameter = 20; //輸入編碼器線數(shù)
u16 Count,Old_Temp,Temp;
int main(void)
{
delay_init(); //延時函數(shù)初始化
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //設(shè)置NVIC中斷分組2:2位搶占優(yōu)先級，2位響應(yīng)優(yōu)先級
uart_init(115200); //串口初始化為115200
LCD_Init(); //初始化LCD
Encode_Init();
POINT_COLOR=BLUE; //字體顏色
LCD_ShowString(75,150,200,16,16,"Count:");
LCD_ShowNum(125,150,0,1,16);
LCD_ShowNum(135,150,0,1,16);
LCD_ShowNum(145,150,0,1,16);
LCD_ShowNum(155,150,0,1,16);
while(1)
{
Old_Temp = Temp; //獲取先前數(shù)值
Temp = Count; //獲取當(dāng)前數(shù)值
if(Old_Temp != Count) //如果先前的計數(shù)值與當(dāng)前計數(shù)值不相等，說明編碼器已轉(zhuǎn)動打印當(dāng)前數(shù)值
{
printf("數(shù)值 = %d\n",Count); //串口打印數(shù)值*/
LCD_ShowNum(125,150,Count/1000,1,16); //液晶顯示數(shù)值
LCD_ShowNum(135,150,(Count%1000)/100,1,16);
LCD_ShowNum(145,150,(Count%100)/10,1,16);
LCD_ShowNum(155,150,Count%10,1,16);
}
}
}

復(fù)制代碼

查詢法：

#include "STM32F1.h"
u16 Parameter = 512; //輸入編碼器線數(shù)
u16 Count,Old_Count;
int main(void)
{
delay_init(); //延時函數(shù)初始化
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //設(shè)置NVIC中斷分組2:2位搶占優(yōu)先級，2位響應(yīng)優(yōu)先級
uart_init(115200); //串口初始化為115200
LCD_Init(); //初始化LCD
TIM4_Init(); //初始化TIM4為編碼器借口模式
POINT_COLOR=BLUE; //字體顏色
LCD_ShowString(75,150,200,16,16,"Count:");
LCD_ShowNum(125,150,0,1,16);
LCD_ShowNum(135,150,0,1,16);
LCD_ShowNum(145,150,0,1,16);
LCD_ShowNum(155,150,0,1,16);
while(1)
{
Old_Count = Count; //獲取先前的計數(shù)值
Count = TIM4->CNT; //獲取編碼器當(dāng)前數(shù)值
if(Old_Count != Count) //如果先前的計數(shù)值與當(dāng)前計數(shù)值不相等，說明編碼器已轉(zhuǎn)動打印當(dāng)前數(shù)值
{
printf("數(shù)值 = %d\n",Count); //串口打印數(shù)值
LCD_ShowNum(125,150,Count/1000,1,16); //液晶顯示數(shù)值
LCD_ShowNum(135,150,(Count%1000)/100,1,16);
LCD_ShowNum(145,150,(Count%100)/10,1,16);
LCD_ShowNum(155,150,Count%10,1,16);
}
}
}