使用 GPIOPins.cs来自 RaspberryPiDotNet 库
本文关键字：RaspberryPiDotNet 来自 cs GPIOPins 使用 | 更新日期: 2023-09-27 18:31:24
从这个站点，你可以下载一个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 有单独的变量（例如 V2_GPIO_04 ） 和引脚（例如 V2_Pin_P1_18）。
GPIOPins和GPIOPinMask有什么区别？何时使用 GPIO 变量？引脚变量？似乎并非所有B+引脚都包含在这里。B+ 有 40 个引脚，代码最多只提供 26 个引脚，用于 B。如果我需要将该引脚用于 GPIO，是否可以改用 GPIO 变量？
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,
};
}
GPIOPIN VS GPIOMask Registers ：
GPIO是嵌入式系统中的一个技术术语，意思是通用输入输出。该输入输出引脚用于控制继电器、执行器、LED发光或检测来自传感器或开关的输入。
每个控制器有多个输入输出，这些输出与控制器PIN相关联。详细信息可从相应的数据表中获得。
GPIOPins 引用此输入输出引脚。您可以使用它通过使用软件更改其值来控制/接口其他电子设备。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进行接口，而其他引脚则保持未连接。为了在这种情况下优化代码，请使用 GPIOPinMask。这利用了硬件功能，这使得引脚在 GPIO 寄存器更改期间的状态更改无效。
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：
天气使用 GPIO_XX 或 PIN_XX_XX 用于 GPIOPins 枚举？
您可以使用任何，这是为了开发人员的方便。 如果您以物理位置作为参考而不是使用PIN_XX_XX，如果您使用的是功能参考（参见原理图中的引脚布局），那么您应该使用GPIO_XX。这取决于开发人员的选择，他在编写代码时需要什么参考。