gpio.cpp

该模块基于USB FX2开发板

//**************************************************************
// GPIO.cpp 
//
// Copyright 2007 by ITC, . All rights reserved.
//
// Author:       Zhou Gang
//
// Date:         2007.7.27
//
// Description: 
//              
//**************************************************************

#include <iostream>
#include <bitset>
#include "stdafx.h"
#include "ezusbsys.h"
#include "usb100.h"
#include "gpio.h"

#pragma warning(disable:4996)

using namespace std;

GPIO :: GPIO()
{
	m_handle = NULL;
}


GPIO :: ~GPIO()
{

}

int GPIO :: Initial(int Num)
{
	int i = Num;
	m_handle = NULL;
	TCHAR m_buffer[32];
	_stprintf(m_buffer,_T("\\\\.\\ezusb-%d"),i);
	m_handle = CreateFile((LPCTSTR)m_buffer,
		GENERIC_READ|GENERIC_WRITE,
		FILE_SHARE_READ,
		NULL,
		OPEN_EXISTING,
		FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
		NULL);
	if (m_handle == INVALID_HANDLE_VALUE)
	{
		return (i+1);

	}//IF

	return 0;
}

int GPIO :: ControlGPIO(TCHAR gpioControlCode)
{
	printf("Control Code : %2.2x\n", gpioControlCode);

	int ErrorCode = Initial(0);//Start device 
	if(0 == ErrorCode)
	{
		_tprintf(_T("Initial USB Port %d SUCCESS\n"),0);	
	}
	else 
	{			
		_tprintf(_T("Initial USB Port %d FAIL\n"),0);
		return 1;
	}

	DWORD outleng=0;
	TCHAR outbuffer[18];
	tcPinBitStatus = 0;
	//tcPinBitStatusLOW = 0;


	HRESULT hr = DeviceIoControl(m_handle,IOCTL_Ezusb_GET_DEVICE_DESCRIPTOR,NULL,0,outbuffer,sizeof(outbuffer),&outleng,0);
	if (0==hr)
	{
		return USBERROR;
	}
	PUSB_DEVICE_DESCRIPTOR devicedescriptor=(PUSB_DEVICE_DESCRIPTOR)outbuffer;


	if((devicedescriptor->idProduct==0x0003)&&(devicedescriptor->idVendor==0xed02))
	{
		WORD getPipe[50]; 

		hr = DeviceIoControl(m_handle,IOCTL_Ezusb_GET_PIPE_INFO,NULL,0,getPipe,sizeof(getPipe),&outleng,0);	
		if (0==hr)
		{
			return USBERROR;
		}
		TCHAR buffer1[MAXBUFFERSIZE];
		TCHAR readbuffer[MAXBUFFERSIZE];
		TCHAR writebuffer[MAXBUFFERSIZE];

		memset(buffer1, gpioControlCode, sizeof(buffer1));
		memset(readbuffer, 0, sizeof(readbuffer));
		buffer1[sizeof(buffer1)-1] = 0;
		_tcscpy(writebuffer,buffer1);

		DWORD nBytes=0;
		int bResult;
		BULK_TRANSFER_CONTROL bulkControl;		

		for(int i=0;i<5;i++)
		{
			bulkControl.pipeNum= 1;		
			bResult=DeviceIoControl(m_handle,IOCTL_EZUSB_BULK_WRITE,&bulkControl,sizeof(BULK_TRANSFER_CONTROL),buffer1,MAXBUFFERSIZE,&nBytes,0);
			if (0 == bResult) 
				return USBERROR;

			bulkControl.pipeNum= 3;
			bResult=DeviceIoControl(m_handle,IOCTL_EZUSB_BULK_READ,&bulkControl,sizeof(BULK_TRANSFER_CONTROL),readbuffer,MAXBUFFERSIZE,&nBytes,0);
			if (0 == bResult) 
				return USBERROR;
		}
		tcPinBitStatus = readbuffer[1];
		//tcPinBitStatusLOW = readbuffer[0];
				
	}

	if(0 == ErrorCode)
	{	
		cout << "USB Port" << 0 << "PASS" << endl;
	}
	else 
	{	
	
	}

	CloseHandle(m_handle);	
	return 0;
}

int GPIO::GetOutputPinStatus(OUT char *szOutputPinStatus)
{
	char temp[32];
	memset(temp, 0, sizeof(temp));
	std::bitset<16>  bOutput ( tcPinBitStatus );
	strcpy(temp, bOutput.to_string().c_str());
	strncpy(szOutputPinStatus, temp+1, 15);
		
	return 0;
}

//int GPIO::GetInputPinStatus(OUT char *szInputPinStatus)
//{
//	char temp[32];
//	memset(temp, 0, sizeof(temp));
//	std::bitset<8>  bInput ( tcPinBitStatus );
//	
//	strcpy(temp, bInput.to_string().c_str());
//	strncpy(szInputPinStatus, temp, 1);
//	strncat(szInputPinStatus, temp+8, 8);
//
//	return 0;
//}

int GPIO :: run(int UsbDeviceNum,int *UsbErrPort, int _argc, char **_argv) 
{
	int i;
	int result = 0;

	for(i=0;i<UsbDeviceNum;i++)
	{
		int ErrorCode = Initial(i);//Start device 
		if(0 == ErrorCode)
		{
			_tprintf(_T("Initial USB Port %d SUCCESS\n"),i);	
		}
		else 
		{			
			_tprintf(_T("Initial USB Port %d FAIL\n"),i);
			*(UsbErrPort+i) = i;
			result = 1;
			return result;
		}


		int n = _argc;
		char **p = _argv;

		


		if (n < 3 || n > 18)
		{
			menu();
			return 1;
		}

		if (n == 3)
		{
			//printf("%s\t%s\n", *(p+1), *(p+2));
			if (0 == stricmp("o", *(p+1)))
			{
				if (0 == stricmp("t", *(p+2)))
				{
					printf("set all\n");
					ControlGPIO(OUTPUT_SET_ALL);
					return 0;
				}
				else if (0 == stricmp("c", *(p+2)))
				{
					printf("clear all\n");
					ControlGPIO(OUTPUT_CLEAR_ALL);
					return 0;
				} 
				else
				{
					menu();
					return 1;
				}
			}
			else if (0 == stricmp("i", *(p+1)))
			{
				if (0 == stricmp("t", *(p+2)))
				{
					ControlGPIO(INPUT_SET_ALL);
					return 0;
				}
				else if (0 == stricmp("c", *(p+2)))
				{
					ControlGPIO(INPUT_CLEAR_ALL);
					return 0;
				} 
				else
				{
					menu();
					return 1;
				}
			} 
			else
			{
				menu();
				return 1;
			}
		}


		int loop = n - 3;
		if ((0 == stricmp("o", *(p+1))) && (0 == stricmp("t", *(p+2))))
		{
			for (int i = 0; i < loop; i++)
			{
				int j = atoi(*(p+3+i));
				if ((j <= 0) || (j > 15) )
				{
					menu();
					return 1;
				}
				ControlGPIO(OUTPUT_SET + j - 1);
			}
			return 0;
		} 
		else if ((0 == stricmp("o", *(p+1))) && (0 == stricmp("c", *(p+2))))
		{
			for (int i = 0; i < loop; i++)
			{
				int j = atoi(*(p+3+i));
				if ((j <= 0) || (j > 15) )
				{
					menu();
					return 1;
				}
				ControlGPIO(OUTPUT_CLEAR + j - 1);
			}
			return 0;
		} 
		else if ((0 == stricmp("i", *(p+1))) && (0 == stricmp("t", *(p+2))))
		{
			for (int i = 0; i < loop; i++)
			{
				int j = atoi(*(p+3+i));
				if ((j <= 0) || (j > 9) )
				{
					menu();
					return 1;
				}
				ControlGPIO(INPUT_SET + j - 1);
			}
			return 0;
		}
		else if ((0 == stricmp("i", *(p+1))) && (0 == stricmp("c", *(p+2))))
		{
			for (int i = 0; i < loop; i++)
			{
				int j = atoi(*(p+3+i));
				if ((j <= 0) || (j > 9) )
				{
					menu();
					return 1;
				}
				ControlGPIO(INPUT_CLEAR + j - 1);
			}
			return 0;
		}
		else
		{
			menu();
			return 1;
		}


		if(0 == ErrorCode)
		{	
			cout << "USB Port" << i << "PASS" << endl;
		}
		else 
		{	
			_tprintf(_T("USB Port %d BAUDFAIL\n"),i);
			*(UsbErrPort+i) = i;
			result = 1;
		}

		CloseHandle(m_handle);	
	}
	return result;
}



void GPIO::menu()
{
	printf("*********** USER GUIDE **********\n");
	printf("gpio -o -t			:Set all the output gpio pins to 1\n");
	printf("gpio -o -t	1 3	12	:Set the 1st 3rd 12th output gpio pins to 1\n");
	printf("gpio -o -c			:Clear all the output gpio pins to 0\n");
	printf("gpio -o -c	1 3	12	:Clear the 1st 3rd 12th output gpio pins to 1\n");
	printf("gpio -i -t			:Set all the input gpio pins to 1\n");
	printf("gpio -i -t	1 3	12	:Set the 1st 3rd 12th input gpio pins to 1\n");
	printf("gpio -i -c			:Clear all the input gpio pins to 0\n");
	printf("gpio -i -c	1 3	12	:Clear the 1st 3rd 12th input gpio pins to 1\n");
	return;
}