User manual

Evaluation in the program works as follows now: Let us assume that boxes 3, 5
and 7 have been selected in the form. The URL changes to:
[IP]/?ld3=on&ld5=on&ld7=on
This means that only selected boxes will be submitted and can be identified based
on the index. This is done in the loop-routine. First, the entire port D on which the
digital outputs are pending is switched to low. Then a while-loop will scan for all
»ld«s in the resource link. The index of the ld found, at ld3 this would, for example,
be 3, permits shifting a 1 in a byte by the index 3 mentioned, and create the byte
0b0001000. This is then or-linked to the current value of the byte. This is done with
all submitted indexes, until the output register of D has the right value. This form of
output instead of digitalWrite() is probably a bit unusual for Arduino users, but
much more practical in this case.
001
if (esp8266.find("+IPD,"))
002
{
003
debug("Incoming Request");
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int connectionId = esp8266.parseInt();
005
if (esp8266.find("/?")) PORTD = B00000000;
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while (esp8266.findUntil("ld", "\n"))
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{
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int ld = esp8266.parseInt();
009
PORTD |= (1 << ld);
010
}
011
}
Vice versa, checkbox output works as follows: The placeholders from the HTML
document are swapped in the createWebsite()-function. A for-loop will go through
all ports used in series. If the pin is high (again determined by comparison to a
byte that was created by shifting the high bit by the digits of the index), the place-
holder with the index is replaced by the text checked. When the pin is low, the
placeholder is simply deleted. This ensures proper display of the active ports.
001
String createWebsite()