张高兴的 Windows 10 IoT 开发笔记：无线收发芯片 nRF24L01

最新推荐文章于 2025-05-29 21:11:20 发布

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最新推荐文章于 2025-05-29 21:11:20 发布

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文章标签：嵌入式 raspberry pi c#

原文链接：http://www.cnblogs.com/zhanggaoxing/p/8444673.html

版权

本文介绍了一个使用C#在Raspberry Pi 2/3上实现的Windows 10 IoT Core项目，该项目利用NRF24L01模块进行无线通信。文章详细展示了如何通过SPI接口连接NRF24L01模块，并提供了NRF24L01.cs文件中关键函数的说明，包括初始化、发送和接收数据的方法。此外，还提供了创建和初始化NRF24L01对象的示例代码，以及如何发送数据和处理接收数据的事件。

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This is a Windows 10 IoT Core project on the Raspberry Pi 2/3, coded by C#.

GitHub：https://github.com/ZhangGaoxing/windows-iot-demo/tree/master/NRF24L01

Image

Connect

nRF1

VCC - 3.3V (Best)
GND - GND
MOSI - SPI0 MOSI (GPIO 10)
MISO - SPI0 MISO (GPIO 9)
SCK - SPI0 SCLK (GPIO 11)
CSN - SPI0 CS0 (GPIO 8)
CE - GPIO 23
IRQ - GPIO 24
nRF2
VCC - 3.3V (Best)
GND - GND
MOSI - SPI1 MOSI (GPIO 20)
MISO - SPI1 MISO (GPIO 19)
SCK - SPI1 SCLK (GPIO 21)
CSN - SPI1 CS0 (GPIO 16)
CE - GPIO 5
IRQ - GPIO 6

What Contains

In NRF24L01.cs file

/// <summary>
/// Initialize
/// </summary>
public async Task InitializeAsync();

/// <summary>
/// Send
/// </summary>
/// <param name="data">Data</param>
public async void Send(byte[] data);

/// <summary>
/// Receive
/// </summary>
/// <param name="length">Packet Size</param>
/// <returns>Data</returns>
public byte[] Receive(byte length);

......

How to Use

First, you need to create a NRF24L01 object. After that you should call InitializeAsync() to initialize.

// Create and Initialize
// CSN Pin, CE Pin, IRQ Pin, SPI Friendly Name, Receive Packet Size
NRF24L01 sender = new NRF24L01(0, 23, 24, "SPI0", 12);
NRF24L01 receiver = new NRF24L01(0, 5, 6, "SPI1", 12);

await sender.InitializeAsync();
await receiver.InitializeAsync();

Secondly

sender.Send(Encoding.UTF8.GetBytes("ZhangGaoxing"));
receiver.ReceivedData += Receiver_ReceivedData;

private void Receiver_ReceivedData(object sender, ReceivedDataEventArgs e)
{
    var raw = e.Data.Skip(1).ToArray();
    var res = Encoding.UTF8.GetString(raw);

    Debug.Write("Received Raw Data : ");
    foreach (var item in raw)
    {
        Debug.Write($"{item} ");
    }
    Debug.WriteLine("");
    Debug.WriteLine($"Received Data : {res}");
}

If you want to close the sensor, call Dispose().

sender.Dispose();
receiver.Dispose();

转载于:https://www.cnblogs.com/zhanggaoxing/p/8444673.html