c# - 将 Arduino 校验和函数转换为 C#

Question

我有这个 Arduino 校验和函数，我想在 C# 中使用它来检查我收到的数据的有效性:

char在Arduino中是1字节长，int是两个字节，C#中对应的data-type是short

char Send::calcChecksum(const char* const packet, const int packetLength) {
    int i = 0;
    char checksum = 0;
    while(i < packetLength) {
        checksum ^= packet[i++];
    }
    return checksum;
}

我如何在 C# 中编写此函数？我特别困惑 ^= 运算符的作用。

Answer 1

using System;

public class Program
{
    public static void Main()
    {
        var stringToCheck = "hi there";

        Console.WriteLine("Checksum for " + stringToCheck + ": " + CalcChecksum(stringToCheck, stringToCheck.Length));
    }

    static int CalcChecksum(string packet, int packetLength)
    {
        char checksum = (char)0;

        for (int i = 0; i < packetLength; i++)
        {
            checksum ^= packet[i];
        }

        return checksum;
    }
}

https://dotnetfiddle.net/6icpvv