HidDevice.cpp
author sl
Sat, 30 Aug 2014 18:43:54 +0200
changeset 14 86faea78ddf0
parent 0 0f874d9e4130
child 35 638eb0763e20
permissions -rw-r--r--
GP1212A02A: Some proper commands implementation and experimenting with various
setup trying to get a descent frame rate.
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//
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//
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//
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#include "HidDevice.h"
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//
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// class HidDevice
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//
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HidDevice::HidDevice():iHidDevice(NULL)
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    {
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    Close();
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    }
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/**
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*/
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HidDevice::~HidDevice()
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	{
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	Close();
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	}
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/**
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*/
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int HidDevice::Open(const char* aPath)
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	{
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	Close();
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	iHidDevice =  hid_open_path(aPath);
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	if (!iHidDevice)
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		{
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		//Fail to connect our device
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		return 0;
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		}
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    FetchStrings();
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	return 1;
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	}
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/**
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See hidapi documentation.
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*/
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int HidDevice::Open(unsigned short aVendorId, unsigned short aProductId, const wchar_t* aSerialNumber)
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	{
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    Close();
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	iHidDevice = hid_open(aVendorId, aProductId, aSerialNumber);
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	if (!iHidDevice)
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		{
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		//Fail to connect our device
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		return 0;
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		}
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    FetchStrings();
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	return 1;
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	}
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/**
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Close this HID device
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*/
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void HidDevice::Close()
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	{
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	hid_close(iHidDevice); //No effect if device is null
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	iHidDevice=NULL;
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    //
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    memset(iVendor,0,sizeof(iVendor));
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    memset(iProduct,0,sizeof(iProduct));
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    memset(iSerialNumber,0,sizeof(iSerialNumber));
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	}
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/**
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*/
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bool HidDevice::IsOpen()
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    {
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    return iHidDevice!=NULL;
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    }
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/**
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*/
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const wchar_t* HidDevice::Error()
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	{
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	return hid_error(iHidDevice);
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	}
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/**
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*/
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int HidDevice::SetNonBlocking(int aNonBlocking)
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	{
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	//Success we are now connected to our HID device
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	//Set read operation as non blocking
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	return hid_set_nonblocking(iHidDevice, aNonBlocking);
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	}
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/**
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*/
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wchar_t* HidDevice::Vendor()
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    {
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    return iVendor;
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    }
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/**
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*/
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wchar_t* HidDevice::Product()
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    {
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    return iProduct;
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    }
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/**
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*/
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wchar_t* HidDevice::SerialNumber()
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    {
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    return iSerialNumber;
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    }
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/**
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*/
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void HidDevice::FetchStrings()
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    {
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    hid_get_manufacturer_string(iHidDevice,iVendor,sizeof(iVendor));
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    hid_get_product_string(iHidDevice,iProduct,sizeof(iProduct));
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    hid_get_serial_number_string(iHidDevice,iSerialNumber,sizeof(iSerialNumber));
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    }