[SOLVED] How to compare received data from UART

[kirangkr]

Hello All
Good Day to you!

In my application I have saved received data from UART to "Rx_reg" array. Now i want to check whether the received data is "DISC" or not. How to do this? Appreciate if you share some sample code for the same. Thank you!

Regards
Kirangkr

 

[Venkadesh_M]

You can use string compare or you can write program like this

---

Code C - [expand]
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char function(void)
{
char string[];
char number[]= "xxxxxxxxxx";
 
for(i = 0; string[i] != 0; i++)
 {
   if(string[i] == num[0])
   {
     for(j = 0; num[j]!= 0; j++)
     if(string[i + j] != num[j])
     break;
   
     if(num[j] == 0)
     return TRUE
   }
}
return FALSE
}

---

 

[ashugtiwari]

The code provided by Venkadesh_M can be used as string compare function and if it returns true. U can switch a LED ON for visual confirmation. Or else u can use same UART and send the same string on UART starting from first character, u will see the string on ur hyper terminal or teraterm. Or u can use alphanumeric LCD to display the strings.

Hope that helps.

 

[andre_luis]

I presume the above variable number[] should be renamed to num[], otherwise would be nerver used on code.

 

[Surender Reddy]

you can go with predefined function strcmp() by placing #include <string.h>
it returns o on success and 1 on fail.