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atoi function

 
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smiles



Joined: 20 Feb 2008
Posts: 33

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atoi function
PostPosted: Fri Feb 22, 2008 9:00 am     Reply with quote
My task is press button to select time for relay on and off, but it doesn't work now, here is my code, hope you show me where I am wrong (my LCD works well as I expect, I think the problem lie in my C coding)
Code:

   int array[16]={'1','4','7','<','2','5','8','0','3','6','9','>','C','&','E','M'};
   int keyPressed;
   int16 timeResult;
// declare functions ...
void main()
{
   // TODO: USER CODE!!
   InitPic();
   InitLcd();
   timeResult=Keypad();
   delay_ms(500);
   do
   {
   output_high(PIN_C0);
   delay_ms(timeResult);
   output_low(PIN_C0);
   delay_ms(timeResult);
   }
   while(1);
}
int OnRelease()
{
   int i,j,k;
   int value[4]={0x07,0x0B,0x0D,0x0E};
   set_tris_a(0x0f);
   k=0;
   for(i=0;i<4;i++)
   {
      output_d(value[i]);
      delay_us(100);
      for(j=0;j<4;j++)
      {
         if(!input(40+j))
         {
            do
            {
               delay_ms(50);
            }
            while(!input(40+j));
            return k;
         }
         else
            k++;
      }
   }
   return -1;
}
//*************************
int16 Keypad()
{
   char number[];
   int iNum;
   int16 numResult;
   timeResult=0;
   do
   {
   keyPressed=OnRelease();
   if ((array[keyPressed] > 0x2F) && (array[keyPressed] < 0x3A))   // for numbers 0-9 only
   {
      WrDat2Lcd(array[keyPressed]);
      number[iNum]=array[keyPressed];
      iNum++;
   }
   if (array[keyPressed] == 'E')   // press Enter key to exit function
   {
      number[iNum]='\0';
      numResult=atoi(number);
      return numResult;
   }
   }
   while(1);
}
//*************************

Thanks !!!
SET



Joined: 15 Nov 2005
Posts: 161
Location: Glasgow, UK

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PostPosted: Fri Feb 22, 2008 1:57 pm     Reply with quote
Quote:
Code:
int OnRelease()
{
   int i,j,k;
   int value[4]={0x07,0x0B,0x0D,0x0E};
   set_tris_a(0x0f);
   k=0;
   for(i=0;i<4;i++)
   {
      output_d(value[i]);
      delay_us(100);
      for(j=0;j<4;j++)
      {
         if(!input(40+j))
         {
            do
            {
               delay_ms(50);
            }
            while(!input(40+j));
            return k;
         }
         else
            k++;
      }
   }
   return -1;         // << signed return value!
}


Remember ints are unsigned in CCS so this function may not work as you expect it to..

Also..

Quote:
Code:
int16 Keypad()
{
   char number[];


You need to set a size for 'number'
And Ive just noticed that you dont initialise inum
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