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银虫 (小有名气)

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在线: 223.9小时
虫号: 2854925
注册: 2013-12-07
性别: GG
专业: 生物电磁技术

[求助] 谁帮忙解释下这段话

#include <ADC.h>
#include <MEGA16.h>
#include <Sys_Init.h>
#include <led_display.h>
#include <AD5310.h>
/****************************************************
** 函数名称: ADC采样函数
** 函数描述: 采样第0通道信号，采样分辨率256
** 输入参数: 无
** 输出参数: 无
*****************************************************/

float TEMP_Table[100] =
{
0.243,0.286,0.329,0.372,0.415,0.458,0.501,0.544,0.587,0.63,
0.673,0.716,0.759,0.802,0.845,0.888,0.931,0.974,1.017,1.06,
1.103,1.146,1.189,1.232,1.275,1.318,1.361,1.404,1.447,1.49,
1.533,1.576,1.619,1.662,1.705,1.748,1.791,1.834,1.877,1.92,
1.963,2.006,2.049,2.092,2.135,2.178,2.221,2.264,2.307,2.35,
2.393,2.436,2.479,2.522,2.565,2.608,2.651,2.694,2.737,2.78,
2.823,2.866,2.909,2.952,2.995,3.038,3.081,3.124,3.167,3.21,
3.253,3.296,3.339,3.382,3.425,3.468,3.511,3.554,3.597,3.64,
3.683,3.726,3.769,3.812,3.855,3.898,3.941,3.984,4.027,4.07,
4.113,4.156,4.199,4.242,4.285,4.328,4.371,4.414,4.457,4.5
};  //  1-100

uint Vol_Table[100] =
{
575,577,579,581,583,585,587,589,591,593,
595,597,599,601,603,605,607,609,611,613,
615,617,619,621,623,625,627,629,631,633,
635,637,639,641,643,647,649,651,653,655,
657,660,663,666,669,672,675,677,680,683,
685,687,690,693,696,699,702,705,708,711,
713,717,720,723,726,729,732,735,738,741,
744,747,750,753,756,759,762,765,768,771,
774,776,778,780,782,784,786,788,790,792,
794,797,800,803,806,809,812,815,818,821
};

volatile float ADC_temp_Value = 0; //AD转换中间变量；
volatile uchar ADC_Flag = 1;
volatile uint Temp_Tested_Counter = 0;
volatile uchar Sys_Error_Flag = 0;
volatile uchar Sys_Check_Flag = 1;
extern volatile uchar Buz_three_flag;
extern volatile uchar Voltage_Up_Flag;
void ADC_Convert()
{
uchar i = 0;
uchar break_flag = 1;
uint temp = 0;
ADC_temp_Value = 0;
while( i < 3 )//连续ADC变换3次，取最后一次的结果；
{
i++;
if( ADC_Flag )
{
   ADMUX = 0x67;          /*基准AVCC、左对齐、通道7*/
   ADCSRA = 0xC5;          /*使能、开启、4分频*/

   while(!(ADCSRA & (1 << ADIF))); /*等待*/

   ADC_temp_Value = ADCH;

   ADCSRA &= ~(1 << ADIF);    /*清标志*/
   ADCSRA &= ~(1 << ADEN); /*关闭转换*/
}
}

//ADC_temp_Value = (ADC_temp_Value / 255) * 5;
   ADC_temp_Value /= 51;
if( Sys_Check_Flag )
{
   if( ADC_temp_Value > TEMP_Table[0] )
   {
   Sys_Error_Flag = 1;
   LED_ERR_ON;
   LED_Out_OFF;
   }
   else
   {
   Sys_Error_Flag = 0;
   LED_ERR_OFF;
   LED_Out_ON;
   Sys_Check_Flag = 0;
   }
}
else
{
   if( ADC_temp_Value < TEMP_Table[0] )
   {
      LED_Out_OFF;
   }
   else
   {
      LED_Out_ON;
   }
}

if(( ADC_temp_Value > 0.242 ) && ( ADC_temp_Value < 6 ))
{
while(( ADC_temp_Value > TEMP_Table[Temp_Tested_Counter] ) &&  break_flag )
{
   if( Temp_Tested_Counter < 100 )
   {
   Temp_Tested_Counter++;
      if( Temp_Tested_Counter == 99 )
      {
         break_flag = 0;
      }
   }
}

temp = Vol_Table[ Temp_Tested_Counter ];
//temp =  Temp_Tested_Counter * 10;
Temp_Tested_Counter = 0;
if( Sys_Error_Flag )
{
   DA_Output( 0 );
   Voltage_Up_Flag = 0;
}
else
{
   DA_Output( temp );
   Voltage_Up_Flag = 1;
}

}
else
{
if(( ADC_temp_Value < 0.242 ) || ( ADC_temp_Value == 0.242 ))
{
   DA_Output( 0 );
   Voltage_Up_Flag = 0;
}
}
}

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