Before you write this development tutorial, say something first.The first thing to declare is that I am not an employee of DJI, but a fan of DJI aircraft.I've been looking forward to launching the SDK after DJI's Phantom. Previously the first Parrot AR Drone has launched the SDK. But its aircraft performance itself and Phantom is not a magnitude, and the SDK is not updated after the launch, now look at the
This article wants to introduce the development environment under the basic DJI SDK iOS, but DJI has given a very detailed tutorial on how to run its demo, the following URL:Https://dev.dji.com/cn/guideHere I summarize the steps to build a new project:Step 1: Register an AppThe ID and app key are important. DJI has made restrictions here.For iOS development, the
In the beginning, I was very excited to see my first blog about DJI's SDK. Unfortunately, after I studied the SDK in depth, I found the following unforgivable restrictions:
1 Not enough GPs can not use the ground station and flight control functions;
2 DJI directly does not provide an interface that can be used to control phantom2 throttle size. Phantom3 and Inspire 1 seem to control the throttle, but Take-off and landing are still restricted. The m
function.Because it was very unfamiliar to the drone, so afraid of the error is outside the program (I would probably not be able to fix it), so choose from the last function of the parameters start.Output the Write parameter in 16-binary formCall the following function in Pro_hw_send
void print (unsigned char *buf, int len) {for (int i = 0; i if (i% = = 0) printf ("\ n");printf ("%2x", Buf[i]);}}
As a result, the output in my program is: Very different from the offi
DJI official website video loading animation by css3 animation, css3
Some time ago, when I visited the DJI official website, I found that there was a very good pre-loaded animation, so I took it without a face. If you are interested, you can copy your shoes. Thank you to the front-end engineering masters of DJI.When using it, you must pay attention to compatibility. modern browsers such as chrome, ff, edge,
Dji Data Transmission considerations
When using the DJI Mobile SDK and the DJI onboard SDK for data transmission, the demo from mobile device to onboard device was quickly implemented in DJI. But from onboard to mobile but tried many times can not be achieved, later, read a blogger's article, finally found the reason.
The c ++ implementation of any level magic is odd level magic, dual-even magic, and single-even magic ., Magic single doll
Magic is divided into three categories. Odd Magic Square (odd
22: Magic magic, 22: Magic magic22: Magic magic
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Magic is a magical N * N matrix. Each row,
Magic Square is divided into Class 3 . Odd Order magic square (odd), double even magic square (can be divisible by 4, such as 8,12,16 ...). ), the single magic square (4m+2 form, such as 6,10 ... ), the construction algorithm is different. In the following program, the algorithm for constructing odd-order
PHP has a number of special functions and methods,
these functions and methods compared to the ordinary method of the special point is that the user code is usually not active invocation, but at a specific time will be automatically called by PHP .
In PHP, usually the "__" method is used as a magic method, the PHP manual recommends that the custom method do not use __.
The magic Methods of PHP are:
__c
Microsoft Magic Mirror: Magic magic from "jiyuhua" to "read tree"
All the children's shoes who have read Snow White will surely have imagined the spirit "Magic Mirror" with an evil queen as a child to understand everything and predict the future. It is precisely because of these creative ideas that have brought incredi
Php's method of starting with two underscores is called a magic method, which plays a pivotal role in PHP. Magic methods include: __construct (), class constructor __destruct (), Class destructor __call (), call to an inaccessible method in an object when calling __callstatic (), invoking an inaccessible method in a static way __get (), gets a member variable of a class when called __set (), sets a memb
?? Absrtact: In the trace Yii Framework source code, encountered __set () Magic method of use, some doubts, so write a demo to test, sure enough to find the mystery, collation as follows.
1. First look at the book on the Magic Method __set () is how to use
?? The purpose of using the __set () Magic method is to assign a value to a private property outside the ob
The work method of practicing blue
Middle of the spirit: the Magic of Yang Gong
The late Open spirit: the Magic Yang work
The peak of open spirit: the Magic Yang work
The avatar of the practicing blue
Mid-term: Butterfly Shadow, lost soul surgery, fire inflammatory surgery
Post-operative: fire inflammation, sedimentation, loss of spirit
The peak of open sp
How do you get on the bones of the underworld?
1. Mission Rewards
Through the task can also get the ghost of the tactic, but the task in the late to get.
2. Ghost Store
Through the Ghost Store is also available to buy, there are enough to buy a small series of suggestions to start.
What magical powers are there in the underworld?
How do you add the avatar to the underworld?
The above is the Magic Day record hand tour in the underworld
PHP is called the Magic method by using the two-underlined method, which plays an important role in PHP. Magic methods include:
__construct (), constructor for class
__destruct (), Destructor of class
__call () Called when an inaccessible method is invoked in an object
__callstatic (), called when an inaccessible method is invoked in a static manner
__get (), which is called when a member variab
Magic variable
PHP provides a large number of predefined constants to any script it runs.
However, many constants are defined by different extensions, and are only available when the extensions are loaded, either dynamically or at compile time.
There are eight magic constants whose values change as they position in the code.
For example, the value of __line__ depends on the line in which it is located i
Examples of functions and usage of common magic methods in PHP, and php magic. Common magic methods in PHP functions and usage examples. php magic overview in object-oriented programming, PHP provides a series of magic methods, these mag
Magic function1. __construct ()Called when an object is instantiated,When __construct and a function with a class name are present, __construct is called and the other is not called.2. __destruct ()Called when an object is deleted or when an object operation terminates.3. __call ()Object calls a method,If the method exists, it is called directly;If it does not exist, it will call the __call function.4. __get ()When reading the properties of an object,
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