张高兴的 Windows 10 IoT 开发笔记：使用 MAX7219 驱动数码管

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/MAX7219_7Segment

Image

Connect

• DIN - MOSI
• CS - CS0
• CLK - SCLK
• VCC - 5V
• GND - GND

Reference

https://github.com/ZhangGaoxing/windows-iot-demo/tree/master/MAX7219/Reference

What Contains

In MAX7219.cs file

/// <summary>
/// Initialize MAX7219
/// </summary>
public async Task InitializeAsync();
/// <summary>
/// Set Register Data and Print
/// </summary>
/// <param name="index">Segment index, range from 0 to 7</param>
/// <param name="val">Printed data</param>
/// <param name="isDecimal">Does it show Decimal Point (Only for DecodeMode is Digit7)</param>
public void SetSegment(int index, byte value, bool isDecimal = false);
/// <summary>
/// Set MAX7219 Decode Mode
/// </summary>
/// <param name="mode">Mode</param>
public void SetDecode(DecodeMode mode);
/// <summary>
/// Set Brightness
/// </summary>
/// <param name="val">In range 0-16</param>
public void SetIntensity(int val);
/// <summary>
/// Test Display
/// </summary>
/// <param name="mode">Mode</param>
public void DisplayTest(DisplayTestMode mode);
/// <summary>
/// Set MAX7219 Power
/// </summary>
/// <param name="mode">Mode</param>
public void SetPower(PowerMode mode);
/// <summary>
/// Clear the Segment
/// </summary>
public void Clear();
/// <summary>
/// Cleanup
/// </summary>
public void Dispose();

How to Use

• First, you need to create a MAX7219 object. After that you should call InitializeAsync() to initialize.

MAX7219 led = new MAX7219(0, DecodeMode.Digit7);
await led.InitializeAsync();
led.SetIntensity(5);

• Secondly

for (int i = 0; i < 8; i++)
{
    led.SetSegment(i, (byte)i);
}

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

led.Dispose();