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[PIC] PIC16F877 Doing work for n sec

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anishpsla

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PIC16F877 Doing work for n sec in MikroC

In my project, I want to do a work for 'n' sec. I am using MikroC and PIC16F877.

For example, 

Code C - [expand]
1

UART1_Write_Text('String')


After executing this, I want to wait up to 'n' sec. If there no reply even after 'n' sec, function Timeout() will execute. Please help me by giving code for the same.

Code C - [expand]
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// this loop waits for the answer
    do{
       if(UART1_Data_Ready()){    
            response[x] = UART1_Read();
            x++;
            // check if the desired answer is in the response of the module
            if (strstr(response, expected_answer1) != NULL)    
            {
                answer = 1;
            }
        }
        // Waits for the asnwer with time out
    }
    while("not timeout");
 

You can insert a counter inside this loop and empirically perform adjust for its limit accordingly.



+++
 
Create a function that contains a code like this:

Code: 
//...inside function
while(1)
{
  while(!UART1_Data_Ready())            //while no serial data is receive
  {
    DelayMs(1);                                  //... wait until timeout
    timer++;
    if(timer > time_out)
    {
      return ERR_TIMEOUT;
    }
  }
  response[x] = UART1_Read();         // read serial data
  x++;
  //More codes here
  // to process byte
  break;  //Exit from function
}
return OK;

then call the function like this:
Code: 
result = GetSerialByte(2000);            //Get byte, wait for 2 sec
if(result == ERR_TIMEOUT)
{
    printf("Your dead");   
}
 
Thanks for your quick reply. I this will help me to implement the timeout.
 

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