sends data to the DCE, that is, when the terminal wants to send data, this signal is valid (ON status ), send a request to the MODEM. It is used to control whether the MODEM is going to be sent 。
Clear to send-CTS (Clear to send-CTS) -- indicates that the DCE is ready to receive data from the DTE and is a response signal to the request to send the RTS. When the MODEM is ready to receive data from the termi
enters deep Sleep, it sets an alarm clock (a timed event from a counter that's clocked by the slow clock) . The timed event normally wakes the chip, but it can is woken prematurely by activity on the UART or USB.
In deep sleep mode, the chip is woken up every 1ms and can also be activated by the UART or USB.
Deep Sleep cannot was used when the chip had a USB host connection and the connection is in its USB "active" state.
This is why the UART communication of the demo bo
to use the Dremel electric grinder to achieve the purpose of the front, so that it can be welded on the back of the PCB board, the workload is still relatively large.Pin descriptionThe previous three useful pins have been obtained, but we have not yet specifically utilized the UART. What needs to be emphasized here is that the UART is one of the asynchronous serial communication protocols, which works by transmitting each character of the transmitted data one after the other. Let's review the U
receives the data bit to be set to the actual data length, otherwise the received data will be garbled.3. Hardware flow ControlFor data flow control, the two sides of the communication will continue to receive information after the exchange is stopped, to avoid the cache overflow caused by processing the data speed problem, resulting in the loss of data . CTS : data can only be sent if the CTS input signal
searches for the IL of the called method in the metadata of the defined assembly. Then, JITCompiler verifies the IL code and compiles the IL code into local CPU commands. The local CPU command is saved to a dynamically allocated memory block. Then, JITCompiler returns the internal data structure created by CLR for the type, finds the record of the method object to be called, and modifies the original reference to JITCompiler, point it to the address in the memory block. Finally, the JITCompiler
------------------------------------------------Key Tips:1, the basic data type difference: char, BYTE, short, int, long;float, double;2. What is CTS? The difference between string and string;3, enumeration type;4, self-increase self-reduction;5, how to exchange two variables;6, the value of the assignment expression: Console.WriteLine (a=b+1), the assignment expression also has a value, its value is the value of the left after copying;7, ternary oper
) { Console.WriteLine(task1.Exception.InnerException); } if (task2 != null task2.IsFaulted) { Console.WriteLine(task2.Exception.InnerException); } }}
3. Use aggresponexception Information
To get all the Exception information, you can also write the results returned by Task. WhenAll into a Task variable, and then access the Exception attribute (aggresponexception type) of the Task class ). Aggresponexception defines the InnerExceptions
multiple programming languages3. Define the rules that each language must follow to help ensure that objects written in different languages interact?Common language Runtime (CLR)Responsible for management. NET application compilation, run, code type security checks, memory allocation, thread management, security, garbage collection, and other services to provide a virtual runtime environment for. NET Applications?Common type systems (CTS Common type
rules that each language must follow to help ensure that objects written in different languages interact?Common language Runtime (CLR)Responsible for management. NET application compilation, run, code type security checks, memory allocation, thread management, security, garbage collection, and other services to provide a virtual runtime environment for. NET Applications?Common type systems (CTS Common type System)The
other aspects as well, like the extensive use WebRTC endpoints Make Oficefor NAT traversal,rtcp feedbackmessages for managing the status of a connection ornbsp ; Rtp/rtcp muxing, whereas existing infrastructures usually rely on simpler approaches like Hosted Nat traversal (HNT) in SB Cs, separate even/odd ports for RTP and RTCP, and more or less basic RFC3550 RTCP statistics and messages. Things get even wilder when we think of the additional stuff, mandatory or not, that's being added toWebRTC
Saw the real card out of the box, we come to the first to understand the NVIDIA GTX 1070 running performance, foreign media cubic has been sent to the GTX 1070 in many games under the measured results.
Although the price of GTX 1070 founders Editon is only 3499 yuan (not public MSRP 2899 Yuan), but from the test, the second 16nm process Pascal again after the abuse Titan X and GTX 980 Ti, the two have completely no need to buy .
parame
request // The progress parameter is responsible for the progress report private void DownLoadFile (string url, CancellationToken ct, IProgress
In this way, we only need the above method to complete the file download program in the previous topic, we only need to call this method in the event handler of the Download button and the event handler of the pause button to call CancellationTokenSource. you can use the Cancel method. The Code is as follows:
// Start DownLoad File private void btnSta
written in one programming language can communicate with code written in another language. Because the type is fundamental to the CLR, Microsoft has specified a formal specification called a "Common type System" (Common type Systems, CTS) that describes the type definition and behavior.Using the rules specified by the CTS, the Assembly establishes a visual boundary for a type, and the CLR enforces (impleme
explicit type conversions when inboxing (boxing), but unboxing(unboxing) requires explicit type conversions, so the third line of code should read:3 Int j = (int) obj;To master boxing and unpacking, it is necessary to understand the CTS and its characteristics: net cts (Common Type System) cts is a common type system that exists to implement the rules that m
I. The CLR's FCL, CTS, and CLS1. The CLR is the common Language runtime, the common language runtime for the Microsoft. NET Framework.2. CTS is the common type system (common type systems), which is a formal specification developed by Microsoft to describe the definition and behavior of types, so that code written in one programming language can communicate with another programming language.The
Parallel Programming-use CancellationTokenSource to schedule Parallel tasks and parallelprogramming
This article describes how to use CancellationTokenSource to schedule tasks that run in parallel.I. Application scenarios
When multiple tasks run in parallel, if an exception occurs in the program running one of the tasks, we want to terminate all tasks to be executed immediately. This will benefit the system performance and other aspects.Ii. Code executed by multiple threads in source code 2.1
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