105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
#include "H/Function_Init.H"
|
||
|
||
unsigned long product = 0;//乘积
|
||
unsigned long quotient = 0;//商
|
||
unsigned int remainder = 0;//余数
|
||
|
||
typedef struct
|
||
{
|
||
unsigned char MDU_EXA3Reg; //EXA3寄存器
|
||
unsigned char MDU_EXA2Reg; //EXA2寄存器
|
||
unsigned char MDU_EXA1Reg; //EXA1寄存器
|
||
unsigned char MDU_EXA0Reg; //EXA0寄存器
|
||
} MDU_EXAxReg_Typedef;
|
||
|
||
typedef union
|
||
{
|
||
MDU_EXAxReg_Typedef MDU_EXAxReg;
|
||
unsigned long MDU_Temp;
|
||
} MDU_Temp_Union;
|
||
//Result_union result;
|
||
|
||
void Multiplication(unsigned int faciend, unsigned int Multiplier);
|
||
void Division(unsigned long dividend,unsigned int divisor);
|
||
|
||
void Multiplier_Divider_Test()
|
||
{
|
||
while(1)
|
||
{
|
||
Multiplication(15,16);
|
||
if(product == 240)
|
||
{
|
||
P03 = ~P03;
|
||
}
|
||
Division(16,5);
|
||
if((quotient == 3) && (remainder == 1))
|
||
{
|
||
P04 = ~P04;
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
|
||
/****************************************************
|
||
*函数名称：Multiplication(unsigned int faciend, unsigned int Multiplier)
|
||
*函数功能：乘法运算
|
||
*入口参数：faciend，Multiplier
|
||
*出口参数：无
|
||
****************************************************/
|
||
void Multiplication(unsigned int faciend, unsigned int Multiplier)
|
||
{
|
||
MDU_Temp_Union MDU_ProductTemp;
|
||
OPERCON &= ~0x40; //选择乘法
|
||
|
||
EXA0 = faciend;
|
||
EXA1 = faciend>>8;
|
||
EXBL = Multiplier;
|
||
EXBH = Multiplier>>8;
|
||
|
||
OPERCON |= 0x80; //开始计算
|
||
while(OPERCON & 0x80); //等待计算完成
|
||
|
||
MDU_ProductTemp.MDU_EXAxReg.MDU_EXA0Reg = EXA0;
|
||
MDU_ProductTemp.MDU_EXAxReg.MDU_EXA1Reg = EXA1;
|
||
MDU_ProductTemp.MDU_EXAxReg.MDU_EXA2Reg = EXA2;
|
||
MDU_ProductTemp.MDU_EXAxReg.MDU_EXA3Reg = EXA3;
|
||
|
||
product = MDU_ProductTemp.MDU_Temp; //获取乘积
|
||
}
|
||
|
||
/****************************************************
|
||
*函数名称：Division(unsigned long dividend,unsigned int divisor)
|
||
*函数功能：除法运算
|
||
*入口参数：dividend，divisor
|
||
*出口参数：无
|
||
****************************************************/
|
||
void Division(unsigned long dividend,unsigned int divisor)
|
||
{
|
||
MDU_Temp_Union MDU_ProductTemp;
|
||
MDU_ProductTemp.MDU_Temp = dividend;
|
||
|
||
OPERCON &= ~0x40;
|
||
OPERCON |= 0x40; //选择除法
|
||
|
||
EXA0 = MDU_ProductTemp.MDU_EXAxReg.MDU_EXA0Reg; //输入除数
|
||
EXA1 = MDU_ProductTemp.MDU_EXAxReg.MDU_EXA1Reg;
|
||
EXA2 = MDU_ProductTemp.MDU_EXAxReg.MDU_EXA2Reg;
|
||
EXA3 = MDU_ProductTemp.MDU_EXAxReg.MDU_EXA3Reg;
|
||
|
||
EXBL = divisor; //输入被除数
|
||
EXBH = divisor>>8;
|
||
|
||
OPERCON |= 0xC0; //开始计算
|
||
while(OPERCON & 0x80); //等待计算完成
|
||
|
||
MDU_ProductTemp.MDU_EXAxReg.MDU_EXA0Reg = EXA0;
|
||
MDU_ProductTemp.MDU_EXAxReg.MDU_EXA1Reg = EXA1;
|
||
MDU_ProductTemp.MDU_EXAxReg.MDU_EXA2Reg = EXA2;
|
||
MDU_ProductTemp.MDU_EXAxReg.MDU_EXA3Reg = EXA3;
|
||
|
||
remainder = EXBH*256+ EXBL; //余数
|
||
quotient = MDU_ProductTemp.MDU_Temp; //商
|
||
}
|
||
|