STM32 高级定时TIM 死区时间计算--C语言实现

#include 
#include 
#include 
#include 

int DTG[8]={0,0,0,0,0,0,0,0};
///是十进制转二进制
int dectobin(int n)
{
    int sum = 0;
    int y, x = 1; // y表示余数，x为叠加的系数
    while (n != 0)
    {
        y = n % 2;
        sum += x * y;
        x *= 10;
        n /= 2;
    }
	return sum;
}
int main()
{
	double TDTS;
	double Tdtg1,Tdtg2,Tdtg3,Tdtg4;
	char str[100];
	double time;
	unsigned int frequency;
	bzero(str,sizeof(str));
	printf("1s = 1000ms t 1ms = 1000us t 1us = 1000nsn");
	printf("输入定时器频率(MHZ)n");
	scanf("%d",&frequency);
	TDTS = (1*1000.0*1000.0*1000.0)/(frequency*1000000.0);
	printf("TDTS: %0.2lf  nsn",TDTS);
    sprintf(str,"%0.2lf",TDTS);    
	Tdtg1 = atof(str);
	printf("Tdtg1:%0.2lfn",Tdtg1);
	
	printf("----------------第一种-------------n");
	double DT1;///持续时间
	printf("tTdtg: %lf  nsn",Tdtg1);
	printf("DTG[7:5]= 0xx => DT=DTG[6:0] × Tdtg1,Tdtg1 = TDTSn");
	printf("Tdtg1: %0.2lf  nsn",Tdtg1);
	DT1 = (pow(2,7)-1)*Tdtg1;
	printf("0--(2^(7)-1)*Tdtg1 :n DT1 = 0ns ~~~~~%0.2lf nsn",DT1);
	
	printf("----------------第二种-------------n");
	double DT2_0,DT2_1;///持续时间
	Tdtg2 = atof(str)*2;
	printf("Tdtg2 = TDTS*2: %0.2lf nsn",Tdtg2);
	printf("DTG[7:5]=10x => DT=(64+DTG[5:0])Tdtg2 , Tdtg2 = 2×TDTSn");
	DT2_0 = 64*Tdtg2;
	DT2_1 = (64+(pow(2,6)-1))*Tdtg2;
	printf("(64 + 0 ~ 64 + 2 ^ 6 - 1)*2* Tdtg2:n DT2 =%0.2lf ns~~~%0.2lf nsn",DT2_0,DT2_1);
	
	printf("----------------第三种-------------n");
	double DT3_0,DT3_1;///持续时间
	Tdtg3 = atof(str)*8;
	printf("Tdtg3 = TDTS*8: %0.2lf nsn",Tdtg3);
	DT3_0 = 32*Tdtg3;
	DT3_1 = (32+(pow(2,5)-1))*Tdtg3;
	printf("DTG[7:5]=110 => DT=(32+DTG[4:0]) × Tdtg3,Tdtg3 = 8 × TDTSn");
	printf("(32 + 0 ~ 32 + 2 ^ 5 - 1)*2* Tdtg3:n DT3 =%0.2lf ns~~~%0.2lf nsn",DT3_0,DT3_1);
	
	printf("----------------第四种-------------n");
	double DT4_0,DT4_1;///持续时间
	Tdtg4 = atof(str)*16;
	printf("Tdtg4 = TDTS*16: %0.2lf nsn",Tdtg4);
	DT4_0 = 32*Tdtg4;
	DT4_1 = (32+(pow(2,5)-1))*Tdtg4;
	printf("DTG[7:5]=110 =16> DT=(32+DTG[4:0]) × Tdtg4,Tdtg4 = 8 × TDTSn");
	printf("(32+0~32+ 2^4 - 1)*2* Tdtg4: n DT4 =%0.2lf ns~~~%0.2lf nsn",DT4_0,DT4_1);
	
	printf("输入你需要死区时间(ns)--尽量选在区域内的范围的死区时间n");
	scanf("%lf",&time);
	
	double ret = 0;
	int result = 0;
	if(time ==DT1 || time < DT1)
	{
		DTG[7]=0;
		printf("属于第一情况:最高永远为 0 n");
		printf("DT1:%0.2lfn",Tdtg1);
		ret =  time / Tdtg1+0.5; 四舍五入
		printf("time / Tdtg1 =%0.0lfn",ret);
		result = dectobin(ret);
		printf("位数不够7位时,在给寄存器赋值时要自已在前面手动补0----DTG[6:0]n");
		printf("DTG[6:0]:%dn",result);
		printf("DTG[7:0]:0b0 %dn",result);
		return 0;
	}
	if((time >DT2_0 && time < DT2_1) || time == DT2_0 || time == DT2_1)
	{
		DTG[0]=1;DTG[1]=1;
		printf("属于第二情况:DTG[7:6]永远为 10 n");
		printf("DT1:%0.2lfn",Tdtg2);
		ret =  time / Tdtg2 - 64+0.5;    四舍五入
		printf("time / Tdtg2 =%0.0lfn",ret);
		result =dectobin(ret);
		printf("位数不够6位时,在给寄存器赋值时要自已在前面手动补0----DTG[5:0]n");
		printf("DTG[5:0]:%dn",result);	
		printf("DTG[7:0]:0b10 %dn",result);
		return 0;
	}
	if((time >DT3_0 && time < DT3_1 )|| time == DT3_0 || time == DT3_1)
	{
		DTG[0]=1;DTG[1]=1;DTG[2]=0;
		printf("属于第三情况:DTG[7:5]永远为 110 n");
		printf("DT1:%0.2lfn",Tdtg3);
		ret =  time / Tdtg3 - 32+0.5;    四舍五入
		printf("time / Tdtg3 =%0.0lfn",ret);
		result =dectobin(ret);
		printf("位数不够5位时,在给寄存器赋值时要自已在前面手动补0----DTG[4:0]n");
		printf("DTG[4:0]:%dn",result);	
		printf("DTG[7:0]:0b110 %dn",result);
		return 0;
	}
	if((time >DT4_0 && time < DT4_1 )|| time == DT4_0 || time == DT4_1)
	{
		DTG[0]=1;DTG[1]=1;DTG[2]=1;
		printf("属于第四情况:DTG[7:5]永远为 111 n");
		printf("DT1:%0.2lfn",Tdtg4);
		ret =  time / Tdtg4 - 32+0.5;    四舍五入
		printf("time / Tdtg4 =%0.0lfn",ret);
		result =dectobin(ret);
		printf("位数不够5位时,在给寄存器赋值时要自已在前面手动补0----DTG[4:0]n");
		printf("DTG[4:0]:%dn",result);	
		printf("DTG[7:0]:0b110 %dn",result);
	}
	return 0;
}

例如第三种情况： 定时器频率：72Mhz 死区时间：5000ns

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