Question

我目前正在与Arduino合作开展机器人项目。我想在不同的时间从不同的方法访问串口。

例如，我想在时间t1读取ADC并在时间t2获得电机电流。所以我创建了readADC（）和motorCurrents（）方法，它们都应该返回不同大小的int数组。收到的串口数据如下：

private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
    int n = serialPort1.BytesToRead;

    serialPort1.Read(data, 0, data.Length);
}

我已经在Arduino方面实施了所有相关的编码。我也设置了串口。我需要在C＃

中实现以下命令

private int[] ReadADC()
{
    string input = "AN\n";  // This is the command for reading the ADC on the Wildthumper board.
    serialPort1.Write(input);

    // The Wildthumper now sends 11 bytes, the last of which is '*' and the first
    // 10 bytes are the data that I want. I need to combine two bytes together
    // from data received and make five values and return it.
    for (int i = 0; i < 5; i++)
    {
        adcValues[i] = data[0 + i * 2] <<8+ data[1 + i * 2];
    }

    return adcValues;
    // Where data is the bytes received on serial port;
}

类似地：

    private int[] getMotorCurrents()
    {
        string input = "MC\n";  // Wildthumper board command
        serialPort1.Write(input);

        // The Wildthumper now sends 5 bytes with the last one being '*'.
        // And the first four bytes are the data that I want.

        for (int i = 0; i < 2; i++)
        {
            MotorCurrents[i] = data[0 + i * 2] <<8 +data[1 + i * 2];
        }

        return MotorCurrents;
     }

首先，发送给我的字节数发生了变化。那么如何使用全局变量呢？对于数据（用于存储上面给出的串行数据的变量）？

Answer 1

您需要创建一个全局变量，并在收到数据时将数据保存到该变量。这并不难。

这是一个代码示例：

public class myclass{
    public string arduinoData = "";

    private void serialPort1_DataReceived(
        object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
    {
        this.arduinoData = serialPort1.ReadLine(data, 0, data.Length);
    }
    //....The rest of your code, such as main methods, etc...
}

如何从不同的方法访问串口数据

1 个答案: