Hi All

I`m developing a program and it have to do basically 4 tasks:

1 - read 4 push-buttons
2 - process the commands according to the read buttons
3 - load a screen in the internal buffer
4 - write the buffer to the LCD

The push-button read function, once called, takes about 4ms, each button is
read in intervals of 1ms and LCD write function, once called, takes about
32ms, each of the 32 characters are written in intervals of 1ms.

My question is about the hardware interfacing functions (1 and 4), which is
the best frequency to call them?

I`ve already tried to call them in intervals of 100ms, it worked, but is it
the best way to do it? or it is better to call them in the main loop of the
code with no time interval?

-- 
Marcelo dos Santos Rodrigues
-- 
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