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/*
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 * usb.cpp
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 *
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 * This module has the wrapper functions to access USB driver functions.
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 *
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 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
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 * ALL RIGHTS RESERVED
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 *
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*/
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//#ifdef Q_OS_WIN32
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//#include <setupapi.h>
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//#endif
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//#include <QMessageBox>
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//#include <QTimer>
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#include "usb.h"
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//#include <stdio.h>
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//#include <stdlib.h>
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#include "hidapi.h"
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/***************************************************
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*                  GLOBAL VARIABLES
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****************************************************/
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static hid_device *DeviceHandle;	//Handle to write
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//In/Out buffers equal to HID endpoint size + 1
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//First byte is for Windows internal use and it is always 0
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unsigned char OutputBuffer[USB_MAX_PACKET_SIZE+1];
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unsigned char InputBuffer[USB_MAX_PACKET_SIZE+1];
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static bool USBConnected = false;      //Boolean true when device is connected
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bool USB_IsConnected()
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{
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    return USBConnected;
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}
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int USB_Init(void)
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{
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    return hid_init();
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}
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int USB_Exit(void)
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{
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    return hid_exit();
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}
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int USB_Open()
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{
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    // Open the device using the VID, PID,
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    // and optionally the Serial number.
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    DeviceHandle = hid_open(MY_VID, MY_PID, NULL);
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    if(DeviceHandle == NULL)
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    {
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        USBConnected = false;
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        return -1;
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    }
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    USBConnected = true;
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    return 0;
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}
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int USB_Write()
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{
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    if(DeviceHandle == NULL)
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        return -1;
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    return hid_write(DeviceHandle, OutputBuffer, USB_MIN_PACKET_SIZE+1);
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}
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int USB_Read()
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{
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    if(DeviceHandle == NULL)
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        return -1;
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    return hid_read_timeout(DeviceHandle, InputBuffer, USB_MIN_PACKET_SIZE+1, 2000);
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}
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int USB_Close()
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{
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    hid_close(DeviceHandle);
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    USBConnected = false;
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    return 0;
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}
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