[英]How to fix a Memory Map Failed Exception for GPIO write on raspberry pi
我正在尝试使用Raspberry Sharp IO库写入Pi上的引脚。 但它在运行时给了我一个例外。 它以前有用,但不再有用。 为什么抛出这个错误?
using System;
using Raspberry.IO.GeneralPurpose;
using Raspberry.IO.GeneralPurpose.Behaviors;
using System.Threading;
namespace blinky
{
class MainClass
{
public static void Main (string[] args)
{
// Here we create a variable to address a specific pin for output
// There are two different ways of numbering pins--the physical numbering, and the CPU number
// "P1Pinxx" refers to the physical numbering, and ranges from P1Pin01-P1Pin40
var led1 = ConnectorPin.P1Pin03.Output();
// Here we create a connection to the pin we instantiated above
var connection = new GpioConnection(led1);
while(true){
// Toggle() switches the high/low (on/off) status of the pin
connection.Toggle(led1);
Thread.Sleep(250);
}
// connection.Close();
}
}
}
返回此错误:
pi@Minion01 ~/blinky1/blinky1/bin/Debug $ mono ./blinky1.exe
Unhandled Exception:
Raspberry.IO.Interop.MemoryMapFailedException: Exception of type 'Raspberry.IO.Interop.MemoryMapFailedException' was thrown.
at Raspberry.IO.Interop.MemoryMap.ThrowOnError[MemoryMapFailedException] (IntPtr result) [0x00000] in <filename unknown>:0
at Raspberry.IO.Interop.MemoryMap.Create (IntPtr address, UInt32 size, MemoryProtection protection, MemoryFlags memoryflags, Int32 fileDescriptor, UInt32 offset) [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnectionDriver..ctor () [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnectionSettings.GetBestDriver (GpioConnectionDriverCapabilities capabilities) [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnectionSettings.get_DefaultDriver () [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnectionSettings..ctor () [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnection..ctor (Raspberry.IO.GeneralPurpose.GpioConnectionSettings settings, IEnumerable`1 pins) [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnection..ctor (Raspberry.IO.GeneralPurpose.PinConfiguration[] pins) [0x00000] in <filename unknown>:0
at blinky.MainClass.Main (System.String[] args) [0x00000] in <filename unknown>:0
[ERROR] FATAL UNHANDLED EXCEPTION: Raspberry.IO.Interop.MemoryMapFailedException: Exception of type 'Raspberry.IO.Interop.MemoryMapFailedException' was thrown.
at Raspberry.IO.Interop.MemoryMap.ThrowOnError[MemoryMapFailedException] (IntPtr result) [0x00000] in <filename unknown>:0
at Raspberry.IO.Interop.MemoryMap.Create (IntPtr address, UInt32 size, MemoryProtection protection, MemoryFlags memoryflags, Int32 fileDescriptor, UInt32 offset) [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnectionDriver..ctor () [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnectionSettings.GetBestDriver (GpioConnectionDriverCapabilities capabilities) [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnectionSettings.get_DefaultDriver () [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnectionSettings..ctor () [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnection..ctor (Raspberry.IO.GeneralPurpose.GpioConnectionSettings settings, IEnumerable`1 pins) [0x00000] in <filename unknown>:0
at Raspberry.IO.GeneralPurpose.GpioConnection..ctor (Raspberry.IO.GeneralPurpose.PinConfiguration[] pins) [0x00000] in <filename unknown>:0
at blinky.MainClass.Main (System.String[] args) [0x00000] in <filename unknown>:0
我该怎么办呢?
我试图通过pi上的monodevelop运行它,也使用mono filename.exe
。 都没有奏效。 但是当我使用sudo ./filename.exe
时它就这样做了。
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