用STC 的 12LE5404AD做脉宽采集1致2mS的脉宽.只能采集第一路(PCA0)第二路(PCA1)不会采集,没有产生CCF1的中断信号?是不是我的程序有什么问题?
麻烦帮忙看看,谢谢.
////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////
#include<STC12C5410AD.H>
#include<INTRINS.H>
typedef unsigned int uint;
typedef unsigned char uchar;
sbit led2 = P2^6;
sbit led1 = P2^7;
sbit Key1 = P2^2;
sbit Key2 = P2^3;
sbit PWM1 = P1^7;
sbit PWM2 = P1^5;
uint temp,Count1,PWM_compare1,PWM_compare2;
uchar PWM_out1,PWM_out2,CCAP2_time;
uchar bdata SB;
sbit tp1 = SB^0;
sbit tp2 = SB^1;
sbit tp3 = SB^2;
sbit tp4 = SB^3;
void Delay(uchar i);
void Initiate();
void Key_scan();
// IAP read and write//
void IAP_enable();
void IAP_disable();
void Sector_erase(uint);
uchar Byte_read(uint adr);
void Byte_write(uint adr,uchar or_data);
main()
{
Count1 = 0;
tp1 = 1;
tp3 = 1;
Initiate();
Delay(20);
while(1)
{
Key_scan();
}
}
void Key_scan()
{
if(Key2 == 0)
{
EA = 0;
Delay(10); //防抖动.
if(Key2 == 0)
{ Sector_erase(0x2800); Byte_write(0x2801,PWM_compare1); led2 = !led2; while(Key2 == 0); }
EA = 1;
}
if(tp2 == 1)
{ PWM_compare1 = Byte_read(0x2801); led2 = !led2;Count1 = 0;EA = 1;} //如果1.3秒内收不到信号,输出保存的占空比.
if(Count1 > 65500) //1.3秒.
tp2 = 1;
else
tp2 = 0;
if(PWM_compare1 > 50) //防止读EEPROM错误.
{
if(PWM_compare1 < 130)
PWM_out1 = PWM_compare1;
}
}
void Delay(uchar i)
{
uchar k1;
for(k1 = 0; k1 < 9; k1++)
for(; i > 0; i--);
}
void Initiate()
{
CMOD = 0x00;
CCON = 0x00;
CL = 0x00;
CH = 0x00;
CCAPM0 = 0x21;//上升沿触发.允许中断.
CCAPM1 = 0x31; //上降上伸沿触发.
EPCA_LVD = 1;
EA = 1;
CR = 0;
ET0 = 1;
TMOD = 0x02;
TL0 = 0xF6; //20uS 定时器. CRYSTAL:6Mhz.
TH0 = 0xF6;
TR0 = 1;
P1M0 = 0x00; //强上拉.
P1M1 = 0x80;
PWM_out1 = 0;
PWM_out2 = 0;
}
// CPA 中断//////////////////////
void CUT() interrupt 6
{
if(CCF0 == 1) //CAP0模块.
{
if(tp1 == 1)
{
CL = 0;
CH = 0;
CCF0 = 0;
CR = 1; //开始计数.
tp1 = 0;
Count1 = 0;
CCAPM0 = 0x11;//下降沿触发.允许中断.
led1 = !led1;
}
if(CCF0 == 1 & tp1 == 0)
{
temp = CH;
temp = (temp << 8) | CL;
PWM_compare1 = temp /10;
CR = 0;
CL = 0;
CH = 0;
CCF0 = 0;
tp1 = 1;
CCAPM0 = 0x21;//上升沿触发.允许中断.
}
if(CCF1 == 1) //CAP1模块.不会运行到这里,没有CCF1 = 1的中断信号,.不能采集这里的信号??????????
{
led1 = !led1;
if(tp3 == 1)
{
CCF1 = 0;
CCAP2_time = 0;
tp3 = 0;
CCAPM1 = 0x11;//下降沿触发.允许中断.
led1 = !led1;
}
if(CCF1 == 1 & tp3 == 0)
{
CCF1 = 0;
PWM_compare2 = CCAP2_time;
tp3 = 1;
CCAPM1 = 0x21; //上升沿触发.允许中断.
}
}
}
}
//////定时器O,用于输出PWM脉冲.//////////
void Time0() interrupt 1
{
static uint tt;
tt++;
if(tt == 920) // 频率控制 920 * 20uS = 18.4mS.
tt = 0;
if(PWM_out1 > 50) //防止干扰.
{
if(PWM_out1 < 130)
if(tt < PWM_out1) //占空比控制.
PWM1 = 1;
else
PWM1 = 0;
}
else
PWM1 = 0;
if(tt < PWM_compare2)
PWM2 = 1;
else
PWM2 = 0;
Count1++;
CCAP2_time++;
}
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