(6) Code Explanation
When we need to repeat some statements, we could use FOR statement.
FOR statement format is shown below:
FOR cyclic sequence:
Round 1：1 → 2 → 3 → 4
Round 2：2 → 3 → 4
...
Until number 2 is not established, “for”loop is over,
After knowing this order, go back to code:
for (int value = 0; value < 255; value=value+1){
...}
for (int value = 255; value >0; value=value-1){
...}
The two“for”statements make value increase from 0 to 255, then reduce
from 255 to 0, then increase to 255,....infinitely loop
There is a new function in the following ----- analogWrite()
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