[AVR] C Language Code Logic

[Titus Manoj Kumar]

Hi all,

I ve a question..

I've two int values (0 to 9) in two variables h_i and h_j

based on that values am going to switch On/Off any device.(ex.led)

ex: if the value is 22 ; led should blink 22 times.

What's the logic should we use in the code?

Thanks.

 

[jayanth.devarayanadurga]

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Code C - [expand]
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for(i = 0; i = h_i; i++){
        LED = 1;
    Delay_ms(500);
        LED = 0;
        Delay_ms(500);  
}

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If h_i = 22 then LED will blink 22 times.

 

[Titus Manoj Kumar]

Hi.,

Thanks for the reply.
But what if suppose the value (22) in which 1st 2 is in h_i and second 2 is in h_j.?

Plz do see this image

https://obrazki.elektroda.pl/4758763400_1390814113.jpg

The value will be entered in the LCD using the switches.
Depending on the values the relays should be switched ON/OFF.

Pls do help.
Thank you.

 

[betwixt]

If one is the tens digit and the other the units digit you can either do a units loop inside a tens loop or combine them into a single number.
For example "NewVariable = (h_i * 10) + h_j;" which makes NewVariable equal to 22 using your numbers as an example.

Incidentally, you should NEVER drive relay coils directly from a microcontroller! It almost certainly can't provide enough current and in any case would be damaged by back-EMF as the relay turns off.

Brian.