从this site，您可以下载Raspberry Pi的.NET库。
GPIOPins.cs包含以下代码。在命名空间RaspberryPiDotNet下，有两个公共枚举对象GPIOPins和GPIOPinMask。 GPIO（例如V2_GPIO_04）和pin（例如V2_Pin_P1_18）有单独的变量。
GPIOPins和GPIOPinMask之间有什么区别？什么时候使用GPIO变量？针变量？似乎并非所有的B +引脚都包含在这里。 B +有40个引脚，代码只提供26个引脚，用于B。在我需要将该引脚用于GPIO的情况下，我可以使用GPIO变量吗？
namespace RaspberryPiDotNet
{
/// <remarks>
/// Refer to http://elinux.org/Rpi_Low-level_peripherals for diagram.
/// P1-01 = bottom left, P1-02 = top left
/// pi connector P1 pin = GPIOnum
/// P1-03 = GPIO0
/// P1-05 = GPIO1
/// P1-07 = GPIO4
/// P1-08 = GPIO14 - alt function (UART0_TXD) on boot-up
/// P1-10 = GPIO15 - alt function (UART0_TXD) on boot-up
/// P1-11 = GPIO17
/// P1-12 = GPIO18
/// P1-13 = GPIO21
/// P1-15 = GPIO22
/// P1-16 = GPIO23
/// P1-18 = GPIO24
/// P1-19 = GPIO10
/// P1-21 = GPIO9
/// P1-22 = GPIO25
/// P1-23 = GPIO11
/// P1-24 = GPIO8
/// P1-26 = GPIO7
///
/// P5-03 = GPI28
/// P5-04 = GPI29
/// P5-05 = GPI30
/// P5-06 = GPI31
///
/// So to turn on Pin7 on the GPIO connector, pass in enumGPIOPIN.gpio4 as the pin parameter
/// </remarks>
public enum GPIOPins : uint
{
GPIO_NONE = uint.MaxValue,
//Revision 1
GPIO_00 = 0,
GPIO_01 = 1,
GPIO_04 = 4,
GPIO_07 = 7,
GPIO_08 = 8,
GPIO_09 = 9,
GPIO_10 = 10,
GPIO_11 = 11,
GPIO_14 = 14,
GPIO_15 = 15,
GPIO_17 = 17,
GPIO_18 = 18,
GPIO_21 = 21,
GPIO_22 = 22,
GPIO_23 = 23,
GPIO_24 = 24,
GPIO_25 = 25,
Pin_P1_03 = 0,
Pin_P1_05 = 1,
Pin_P1_07 = 4,
Pin_P1_08 = 14,
Pin_P1_10 = 15,
Pin_P1_11 = 17,
Pin_P1_12 = 18,
Pin_P1_13 = 21,
Pin_P1_15 = 22,
Pin_P1_16 = 23,
Pin_P1_18 = 24,
Pin_P1_19 = 10,
Pin_P1_21 = 9,
Pin_P1_22 = 25,
Pin_P1_23 = 11,
Pin_P1_24 = 8,
Pin_P1_26 = 7,
LED = 16,
//Revision 2
V2_GPIO_00 = 0,
V2_GPIO_02 = 2,
V2_GPIO_03 = 3,
V2_GPIO_01 = 1,
V2_GPIO_04 = 4,
V2_GPIO_07 = 7,
V2_GPIO_08 = 8,
V2_GPIO_09 = 9,
V2_GPIO_10 = 10,
V2_GPIO_11 = 11,
V2_GPIO_14 = 14,
V2_GPIO_15 = 15,
V2_GPIO_17 = 17,
V2_GPIO_18 = 18,
V2_GPIO_21 = 21,
V2_GPIO_22 = 22,
V2_GPIO_23 = 23,
V2_GPIO_24 = 24,
V2_GPIO_25 = 25,
V2_GPIO_27 = 27,
//Revision 2, new plug P5
V2_GPIO_28 = 28,
V2_GPIO_29 = 29,
V2_GPIO_30 = 30,
V2_GPIO_31 = 31,
V2_Pin_P1_03 = 2,
V2_Pin_P1_05 = 3,
V2_Pin_P1_07 = 4,
V2_Pin_P1_08 = 14,
V2_Pin_P1_10 = 15,
V2_Pin_P1_11 = 17,
V2_Pin_P1_12 = 18,
V2_Pin_P1_13 = 27,
V2_Pin_P1_15 = 22,
V2_Pin_P1_16 = 23,
V2_Pin_P1_18 = 24,
V2_Pin_P1_19 = 10,
V2_Pin_P1_21 = 9,
V2_Pin_P1_22 = 25,
V2_Pin_P1_23 = 11,
V2_Pin_P1_24 = 8,
V2_Pin_P1_26 = 7,
V2_LED = 16,
//Revision 2, new plug P5
V2_Pin_P5_03 = 28,
V2_Pin_P5_04 = 29,
V2_Pin_P5_05 = 30,
V2_Pin_P5_06 = 31,
};
public enum GPIOPinMask : uint
{
GPIO_NONE = uint.MaxValue,
//Revision 1
GPIO_00 = 0,
GPIO_01 = 1,
GPIO_04 = 1 << 4,
GPIO_07 = 1 << 7,
GPIO_08 = 1 << 8,
GPIO_09 = 1 << 9,
GPIO_10 = 1 << 10,
GPIO_11 = 1 << 11,
GPIO_14 = 1 << 14,
GPIO_15 = 1 << 15,
GPIO_17 = 1 << 17,
GPIO_18 = 1 << 18,
GPIO_21 = 1 << 21,
GPIO_22 = 1 << 22,
GPIO_23 = 1 << 23,
GPIO_24 = 1 << 24,
GPIO_25 = 1 << 25,
Pin_P1_03 = 1 << 0,
Pin_P1_05 = 1 << 1,
Pin_P1_07 = 1 << 4,
Pin_P1_08 = 1 << 14,
Pin_P1_10 = 1 << 15,
Pin_P1_11 = 1 << 17,
Pin_P1_12 = 1 << 18,
Pin_P1_13 = 1 << 21,
Pin_P1_15 = 1 << 22,
Pin_P1_16 = 1 << 23,
Pin_P1_18 = 1 << 24,
Pin_P1_19 = 1 << 10,
Pin_P1_21 = 1 << 9,
Pin_P1_22 = 1 << 25,
Pin_P1_23 = 1 << 11,
Pin_P1_24 = 1 << 8,
Pin_P1_26 = 1 << 7,
LED = 1 << 16,
//Revision 2
V2_GPIO_00 = 1 << 0,
V2_GPIO_02 = 1 << 2,
V2_GPIO_03 = 1 << 3,
V2_GPIO_01 = 1 << 1,
V2_GPIO_04 = 1 << 4,
V2_GPIO_07 = 1 << 7,
V2_GPIO_08 = 1 << 8,
V2_GPIO_09 = 1 << 9,
V2_GPIO_10 = 1 << 10,
V2_GPIO_11 = 1 << 11,
V2_GPIO_14 = 1 << 14,
V2_GPIO_15 = 1 << 15,
V2_GPIO_17 = 1 << 17,
V2_GPIO_18 = 1 << 18,
V2_GPIO_21 = 1 << 21,
V2_GPIO_22 = 1 << 22,
V2_GPIO_23 = 1 << 23,
V2_GPIO_24 = 1 << 24,
V2_GPIO_25 = 1 << 25,
V2_GPIO_27 = 1 << 27,
//Revision 2, new plug P5
V2_GPIO_28 = 1 << 28,
V2_GPIO_29 = 1 << 29,
V2_GPIO_30 = 1 << 30,
V2_GPIO_31 = (uint)1 << 31,
V2_Pin_P1_03 = 1 << 2,
V2_Pin_P1_05 = 1 << 3,
V2_Pin_P1_07 = 1 << 4,
V2_Pin_P1_08 = 1 << 14,
V2_Pin_P1_10 = 1 << 15,
V2_Pin_P1_11 = 1 << 17,
V2_Pin_P1_12 = 1 << 18,
V2_Pin_P1_13 = 1 << 27,
V2_Pin_P1_15 = 1 << 22,
V2_Pin_P1_16 = 1 << 23,
V2_Pin_P1_18 = 1 << 24,
V2_Pin_P1_19 = 1 << 10,
V2_Pin_P1_21 = 1 << 9,
V2_Pin_P1_22 = 1 << 25,
V2_Pin_P1_23 = 1 << 11,
V2_Pin_P1_24 = 1 << 8,
V2_Pin_P1_26 = 1 << 7,
V2_LED = 1 << 16,
//Revision 2, new plug P5
V2_Pin_P5_03 = 1 << 28,
V2_Pin_P5_04 = 1 << 29,
V2_Pin_P5_05 = 1 << 30,
V2_Pin_P5_06 = (uint)1 << 31,
};
}
答案 0 :(得分：0)
GPIOPIN VS GPIOMask寄存器：
GPIO是嵌入式系统中的技术术语，指通用输入输出。该输入输出引脚用于控制继电器，执行器，LED发光或检测传感器或开关的输入。
每个控制器多输入输出，与控制器PIN相关联。详细信息可从相应的数据表中获得。
GPIOPins 是对此输入输出引脚的引用。您可以使用它来通过使用软件更改其值来控制/接触其他电子设备。这可以通过更改 GPIO 寄存器
中的值来实现value 1 to GPIOpins gets/sets high (+VCC) voltage on pin.
value 0 to GPIOpins gets/sets (0) voltage on pin.
有时开发人员只需要特定的引脚接口，其他引脚保持不连接。要在这种情况下优化代码，请使用 GPIOPinMask 。这利用了硬件功能，这使得在 GPIO 寄存器更改期间引脚无效。
value 1 will mask the PIN for further changes in GPIOPins
value 0 will unmask the PIN, which will affect voltage on pin as above explanation.
编辑：
将GPIO_XX或PIN_XX_XX用于GPIOPins枚举的天气？
您可以使用任何，这是为了方便开发人员。如果您使用物理位置作为参考，而不是使用 PIN_XX_XX ，如果您正在使用功能参考（请参阅原理图中的引脚布局），那么您应该使用 GPIO_XX 。它是开发人员的选择，他在编写代码时所采用的参考。