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1. Top results related to interrupt latency in embedded system programming in c# 3

   • In c#( .net) system.net.http, how to get the response.statuscode as an int? Not to use HttpWebRequest and HttpWebResponse

     Top Answer

     Answered Sep 02, 2015 · 3 votes

     HttpResponseMessage.StatusCode

     is a HttpStatusCode

     enum, whose underlying integer type is int, so you can just cast it:

     int statusCode = (int)response.StatusCode;-

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     1/5

   • In C# , How can i create a System.Drawing.Color object using a hex value?

     Top Answer

     Answered Nov 19, 2009 · 32 votes

     string hexValue = "#000000"; // You do need the hashColor colour = System.Drawing.ColorTranslator.FromHtml(hexValue); // Yippee-

     Edit: You do actually need the hash, or the alpha value won't be taken into account. Woops!

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     2/5

   • System.Threading.Timer in C# it seems to be not working. It runs very fast every 3 second

     Top Answer

     Answered Dec 30, 2016 · 249 votes

     This is not the correct usage of the System.Threading.Timer. When you instantiate the Timer, you should almost always do the following:

     _timer = new Timer( Callback, null, TIME_INTERVAL_IN_MILLISECONDS, Timeout.Infinite );-

     This will instruct the timer to tick only once when the interval has elapsed. Then in your Callback function you Change the timer once the work has completed, not before. Example:

     private void Callback( Object state ){ // Long running operation _timer.Change( TIME_INTERVAL_IN_MILLISECONDS, Timeout.Infinite );}

     Thus there is no need for locking mechanisms because there is no concurrency. The timer will fire the next callback after the next interval has elapsed + the time of the long running operation.

     If you need to run your timer at exactly N milliseconds, then I suggest you measure the time of the long running operation using Stopwatch and then call the Change method appropriately:

     private void Callback( Object state ){ Stopwatch watch = new Stopwatch();- watch.Start(); // Long running operation _timer.Change( Math.Max( 0, TIME_INTERVAL_IN_MILLISECONDS - watch.ElapsedMilliseconds ), Timeout.Infinite );}

     I strongly encourage anyone doing .NET and is using the CLR who hasn't read Jeffrey Richter's book - CLR via C#, to read is as soon as possible. Timers and thread pools are explained in great details there.

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     3/5

   • C++ "system()" in C#

     Top Answer

     Answered May 29, 2012 · 7 votes

     Look into System.Diagnostics.Process.Start: http://msdn.microsoft.com/en-us/library/system.diagnostics.process.start.aspx

     Check all answers on Stack Overflow

     4/5

   • C# .Net Core 3.1 System.Text.Json Ignore empty collection in serialization

     Top Answer

     Answered Sep 19, 2022 · 11 votes

     TypeInfoResolver

     added in .NET 7(accessible in older runtimes via the system.text.json nuget package, pre-release as of time of this answer) allows this.

     Example:

     using System.Collections;using System.Text.Json;using System.Text.Json.Serialization.Metadata;public class TestObject { public List<int> Ints { get; } = new() {3, 4, 5}; public List<int> EmptyInts { get; } = new(); public List<int> NullInts { get; }}public static class Program { public static void Main() { var options = new JsonSerializerOptions { TypeInfoResolver = new DefaultJsonTypeInfoResolver { Modifiers = {DefaultValueModifier} }, }; var obj = new TestObject(); var text = JsonSerializer.Serialize(obj, options); Console.WriteLine(text); } private static void DefaultValueModifier(JsonTypeInfo type_info) { foreach (var property in type_info.Properties) { if (typeof(ICollection).IsAssignableFrom(property.PropertyType)) { property.ShouldSerialize = (_, val) => val is ICollection collection && collection.Count > 0; } } }}

     output:

     {"Ints":[3,4,5]}-

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     5/5

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2. www.geeksforgeeks.org · what-is-interrupt-latencyWhat is Interrupt Latency? - GeeksforGeeks

   www.geeksforgeeks.org · what-is-interrupt-latency

   

   Feb 2, 2023 · Interrupt latency is an important consideration in the design and optimization of real-time and embedded systems. These systems often have hard real-time constraints, meaning that they must respond to external events within a specified time period.

3. Videos

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     30:38

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     Interrupt Programming in Embedded C

     Sep 11, 2018

     5.5K Views

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     30:38

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     Interrupt Programming in Embedded C

     Mar 16, 2020

     246 Views

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     8:16

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     Interrupt Latency | Embedded Hardware | Embedded System & RTOS

     Apr 7, 2022

     1.3K Views

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4. Searches related to interrupt latency in embedded system programming in c# 3

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5. stackoverflow.com · questions · 3072815embedded - Polling or Interrupt based method - Stack Overflow

   stackoverflow.com · questions · 3072815

   

   Jun 18, 2010 · Interrupts are preferred when low latency is required. If you poll for some condition N times per second, then on average you will discover that condition in time one half of 1/N after it has actually happened. Polling is sometimes preferred when absolute deterministic timing is required.

6. runtimerec.com · wp-content · uploadsOptimizing Response Times in Interrupt Handling for Embedded ...

   runtimerec.com · wp-content · uploads

   

   Interrupt Service Routines (ISRs) play a crucial role in the functioning of embedded systems by handling external events or signals in a timely manner. In real-time systems, it is essential to optimize the response times of ISRs to ensure that critical tasks are executed promptly.

7. library.fiveable.me · embedded-systems-design · unit-7Embedded Systems Design Unit 7 – Interrupts ... - Fiveable

   library.fiveable.me · embedded-systems-design · unit-7

   

   This unit covers various types of interrupts, interrupt service routines, exception handling, and best practices for interrupt-driven design. It delves into concepts like interrupt prioritization, context switching, and latency optimization, essential for developing responsive embedded systems.

8. www.bogotobogo.com · Embedded · hardware_interruptEmbedded Systems Programming: Interrupt, Interrupt Latency ...

   www.bogotobogo.com · Embedded · hardware_interrupt

   

   Interrupt latency refers primarily to the software interrupt handling latencies. In other words, the amount of time that elapses from the time that an external interrupt arrives at the processor until the time that the interrupt processing begins.

9. www.embedded.com · introduction-to-interruptsEmbedded Systems: Interrupts & Latency

   www.embedded.com · introduction-to-interrupts

   

   Jun 1, 2001 · Interrupt latency. The interrupt latency is the interval of time measured from the instant an interrupt is asserted until the corresponding ISR begins to execute. The worst-case latency for any given interrupt is a sum of many things, from longest to shortest:

10. People also ask

    What is interrupt latency?

    • Interrupt latency is a measure of the time it takes for a computer system to respond to an external event, such as a hardware interrupt or software exception. This metric is important in determining the performance and responsiveness of a system and is a key consideration in the design and optimization of real-time and embedded systems.

    What is Interrupt Latency? - GeeksforGeeks

    www.geeksforgeeks.org/what-is-interrupt-latency/

    See all results for this question

    What are the three types of latency?

    • There are three types of latency that are measured: The latency from the timer interrupts the ISR execution. The latency from the timer interrupts the RTOS highest priority task. The latency of the external GPIO interrupts response. Interrupt latency is a measure of the time it takes for a computer system to respond to an external event.

    What is Interrupt Latency? - GeeksforGeeks

    www.geeksforgeeks.org/what-is-interrupt-latency/

    See all results for this question

    Can interrupt latency be calculated from instruction times?

    • In simple cases, latency can be calculated from instruction times, but many modern systems with 32-bit CPUs, caches, and multiple interrupt sources, are far too complex for exact latency calculations. Interrupt latency must be considered at design time, whenever responsiveness matters.

    Embedded Systems: Interrupts & Latency

    www.embedded.com/introduction-to-interrupts/

    See all results for this question

    What is GPIO interrupt latency?

    • The latency of the external GPIO interrupts response. Interrupt latency is a measure of the time it takes for a computer system to respond to an external event. It is an important metric in determining the performance and responsiveness of a system, particularly in real-time and embedded systems.

    What is Interrupt Latency? - GeeksforGeeks

    www.geeksforgeeks.org/what-is-interrupt-latency/

    See all results for this question

11. www.embedded.com · 5-best-practices-for-writing5 best practices for writing interrupt service routines

    www.embedded.com · 5-best-practices-for-writing

    

    Jun 5, 2024 · Interrupts are an integral part of an embedded system. Unfortunately, poorly written ISRs can result in systems with race conditions, poor responsiveness, and even excessive CPU use. In this post, we’ll explore several best practices for writing effective ISRs. ISR Best Practice #1 – Keep them short and fast. Interrupts are super cool!