time delay + adc problem

sahu · Nov 5, 2011

I'm facing problem time delay during dual ADC i\p at same time.

Code:

int ProcessMains(void) 
 { 
    ch_0 = getchreading(0); 
    Process_ch_0();      // Do something with ch_0 o\p lod sence 
     if (ch_0>800)  // lod 130 % Wait 6 min 
        Delay60000ms 
       return(OVER_LOD_SENCE); 
       
    ch_1 = getchreading(1);  
    Process_ch_1();      // Do something with ch_1 o\p volt 
       if (ch_1>1000) 
       return(HIGH_VOLTAGE); 
     
        if (ch_1<950) 
       return(NORMAL_VOLTAGE); 

 }

Actually I want if (ch_0>800) mcu wait 6 min,

when ADC reach >800 delay start hear

if (ch_0>800) yet 6 min, then return(OVER_LOD_SENCE)

if (ch_0<800) during 6 min. it will go predefine return abc case.
im using CCS C .

sahu · Nov 8, 2011

need help
pl help me

Ian Rogers · Nov 8, 2011

You do realize, that function will ALWAYS return over_lod_sense.. Delay6000ms hasn't got a ";" at the end

it should read

Code:

  if (ch_0>800)  // lod 130 % Wait 6 min 
      {
       Delay60000ms ;   // end statement
       return(OVER_LOD_SENCE); 
      }

now it will only return O_L_S when it evaluates ch > 800..

sahu · Nov 9, 2011

Ian Rogers said:
You do realize, that function will ALWAYS return over_lod_sense.. Delay6000ms hasn't got a ";" at the end

it should read

Code:

if (ch_0>800) // lod 130 % Wait 6 min { Delay60000ms ; // end statement return(OVER_LOD_SENCE); }

now it will only return O_L_S when it evaluates ch > 800..

one main problem is hear

when ADC reach >800 delay start hear(6 minutes)

ok |||
between delay(6 minutes) other ADC ch_1 not working

ch_1 = getchreading(1);
Process_ch_1(); // Do something with ch_1 o\p volt
if (ch_1>1000)
return(HIGH_VOLTAGE);
ETC

Ian Rogers · Nov 9, 2011

In you original code

Code:

int ProcessMains(void) 
 { 
    ch_0 = getchreading(0); 
    Process_ch_0();      // Do something with ch_0 o\p lod sence 
     if (ch_0>800)  // lod 130 % Wait 6 min 
        Delay60000ms                      EVEN WITH THE MISSING  ';'
       return(OVER_LOD_SENCE);      THIS IS EXECUTED ANYWAY
 
    ch_1 = getchreading(1);            WHICH MEANS THIS NEVER IS.
    Process_ch_1();      // Do something with ch_1 o\p volt 
       if (ch_1>1000) 
       return(HIGH_VOLTAGE); 
 
        if (ch_1<950) 
       return(NORMAL_VOLTAGE); 
 
 }

sahu · Nov 10, 2011

Ian Rogers said:

In you original code

Code:

int ProcessMains(void) 
 { 
    ch_0 = getchreading(0); 
    Process_ch_0();      // Do something with ch_0 o\p lod sence 
     if (ch_0>800)  // lod 130 % Wait 6 min 
        Delay60000ms                      EVEN WITH THE MISSING  ';'
       return(OVER_LOD_SENCE);      THIS IS EXECUTED ANYWAY
 
    ch_1 = getchreading(1);            WHICH MEANS THIS NEVER IS.
    Process_ch_1();      // Do something with ch_1 o\p volt 
       if (ch_1>1000) 
       return(HIGH_VOLTAGE); 
 
        if (ch_1<950) 
       return(NORMAL_VOLTAGE); 
 
 }

yes |||

Ian Rogers · Nov 10, 2011

I think our wires were crossed.... What is it you want the function to do....If the flow is like ths..

read ch_0..
process ch_0
if ch_0 is bigger than 800 then delay 6 seconds then return O_L_S (finished)

read ch_1..
process ch_1
if ch_1 is bigger than 1000 then return H_V (finished)
or return N_V (finished)

In either case if ch_0 is bigger than 800 then ch_1 is ignored.

Are you wanting to halt like this.

Code:

int ProcessMains(void) 
 { 
    int x = 600;
    ch_0 = getchreading(0); 
    Process_ch_0();     // Do something with ch_0 o\p lod sence 
     if (ch_0>800)      // lod 130 % Wait 6 min 
         {
         while(x--)
            {
             Delay1000ms;
             ch_0 = getchreading(0); 
             Process_ch_0();                  // Do something with ch_0 o\p lod sence 
             if(ch_0 < 800) return abc;
             }         
       return(OVER_LOD_SENCE);      
      }
    ch_1 = getchreading(1);            WHICH MEANS THIS NEVER IS.
    Process_ch_1();      // Do something with ch_1 o\p volt 
    if (ch_1>1000) 
       return(HIGH_VOLTAGE); 
 
    if (ch_1<950) 
       return(NORMAL_VOLTAGE); 
 
 }

you'll need to keep acessing the ch_0 reading to check if it goes lower.

sahu · Nov 11, 2011

Ian Rogers said:
I think our wires were crossed.... What is it you want the function to do....If the flow is like ths..

read ch_0..
process ch_0
if ch_0 is bigger than 800 then delay 6 seconds then return O_L_S (finished)

read ch_1..
process ch_1
if ch_1 is bigger than 1000 then return H_V (finished)
or return N_V (finished)

In either case if ch_0 is bigger than 800 then ch_1 is ignored.

Are you wanting to halt like this.

Code:

int ProcessMains(void) { int x = 600; ch_0 = getchreading(0); Process_ch_0(); // Do something with ch_0 o\p lod sence if (ch_0>800) // lod 130 % Wait 6 min { while(x--) { Delay1000ms; ch_0 = getchreading(0); Process_ch_0(); // Do something with ch_0 o\p lod sence if(ch_0 < 800) return abc; } return(OVER_LOD_SENCE); } ch_1 = getchreading(1); WHICH MEANS THIS NEVER IS. Process_ch_1(); // Do something with ch_1 o\p volt if (ch_1>1000) return(HIGH_VOLTAGE); if (ch_1<950) return(NORMAL_VOLTAGE); }

you'll need to keep acessing the ch_0 reading to check if it goes lower.

thank u sir for Ur guidelines
above change work as u say .
but my main problem is hear .....

In either case if ch_0 is bigger than 800 then ch_1 is ignored.

as i want " in case if ch_0 is bigger than 800 & it(mcu) sty in delay mode & during delay mode ch_1 is don't ignored "
because ch_0= current sens adc & ch_1= voltage sens adc.
so if (mcu) sty in delay mode & ch_1 is ignored by mcu & ch_1 >1000 (HIGH_VOLTAGE ) .we found HIGH_VOLTAGE . mcu not go high volt cut mode
it is one error .

Ian Rogers · Nov 11, 2011

set a return value of 1 = O_L_S, 2 = ABC, 3 = HV and 4 = NV

Code:

int ProcessMains(void) 
   { 
   static int x = 0;
   int returnvalue = 0;
    
   ch_0 = getchreading(0); 
   Process_ch_0();     // Do something with ch_0 o\p lod sence 
   if (ch_0>800)        // lod 130 % Wait 6 min 
      {
      if( x++ == 600 )
         returnvalue  = OVER_LOD_SENCE; 
      Delay1000ms;
      }
   else(ch_0 < 800) 
      returnvalue  = ABC;
       
   ch_1 = getchreading(1);           
   Process_ch_1();      // Do something with ch_1 o\p volt 
   if (ch_1>1000) 
       returnvalue = HIGH_VOLTAGE; 
 
    if (ch_1<950) 
       returnvalue = NORMAL_VOLTAGE; 
       
    return returnvalue;
 
 }

The only way I can figure it out

sahu · Nov 12, 2011

Ian Rogers said:

set a return value of 1 = O_L_S, 2 = ABC, 3 = HV and 4 = NV

Code:

int ProcessMains(void) 
   { 
   static int x = 0;
   int returnvalue = 0;
    
   ch_0 = getchreading(0); 
   Process_ch_0();     // Do something with ch_0 o\p lod sence 
   if (ch_0>800)        // lod 130 % Wait 6 min 
      {
      if( x++ == 600 )
         returnvalue  = OVER_LOD_SENCE; 
      Delay1000ms;
      }
   else(ch_0 < 800) 
      returnvalue  = ABC;
       
   ch_1 = getchreading(1);           
   Process_ch_1();      // Do something with ch_1 o\p volt 
   if (ch_1>1000) 
       returnvalue = HIGH_VOLTAGE; 
 
    if (ch_1<950) 
       returnvalue = NORMAL_VOLTAGE; 
       
    return returnvalue;
 
 }

The only way I can figure it out

im right ?

Code:

 /*****************************************************************************
  ProcessMains return values
 ****************************************************************************/
#define NORMAL_VOLTAGE 0
#define HIGH_VOLTAGE 1
#define LOW_VOLTAGE 2
#define OVER_LOD_SENCE 3  // 130 % yet 6 min

Ian Rogers · Nov 13, 2011

Or.... a better way would be to return flags 1,2,4,8 That way you can return and assess more than one return value....9 would be 1 and 8 etc...

sahu · Nov 13, 2011

Ian Rogers said:
Or.... a better way would be to return flags 1,2,4,8 That way you can return and assess more than one return value....9 would be 1 and 8 etc...

not clear (understand)
pl more explane.

Ian Rogers · Nov 13, 2011

Well.. If you have four return values....and lets say ch_0 is out of range ie.. >800, then you call ch_1 will overwrite the return value. and you still have a situation where ch_1 returned ok and ch_0 return wasn't seen... So!! if O_L_S was bit 0, ABC was bit 1, High voltage was bit 2 and normal voltage was bit 3 you would see both ch_0 and ch_1 return conditions (actually you only need two as there are only two conditions for both )

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time delay + adc problem

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