blob: 0feaba7ac880638917b9bcdc60cff16cd72c99db (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
.. _arduino-delaymicroseconds:
delayMicroseconds()
===================
Description
-----------
Pauses the program for the amount of time (in microseconds)
specified as parameter. There are a thousand microseconds in a
millisecond, and a million microseconds in a second.
Currently, the largest value that will produce an accurate delay is
16383. This could change in future Arduino releases. For delays
longer than a few thousand microseconds, you should use delay()
instead.
Syntax
------
delayMicroseconds(us)
Parameters
----------
us: the number of microseconds to pause (*unsigned int*)
Returns
-------
None
Example
-------
::
int outPin = 8; // digital pin 8
void setup()
{
pinMode(outPin, OUTPUT); // sets the digital pin as output
}
void loop()
{
digitalWrite(outPin, HIGH); // sets the pin on
delayMicroseconds(50); // pauses for 50 microseconds
digitalWrite(outPin, LOW); // sets the pin off
delayMicroseconds(50); // pauses for 50 microseconds
}
configures pin number 8 to work as an output pin. It sends a train
of pulses with 100 microseconds period.
Caveats and Known Issues
------------------------
This function works very accurately in the range 3 microseconds and
up. We cannot assure that delayMicroseconds will perform precisely
for smaller delay-times.
As of Arduino 0018, delayMicroseconds() no longer disables
interrupts.
See also
--------
- `millis <http://arduino.cc/en/Reference/Millis>`_\ ()
- `micros <http://arduino.cc/en/Reference/Micros>`_\ ()
- `delay <http://arduino.cc/en/Reference/Delay>`_\ ()
|
