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/*
* LibusbDevice_win.cpp
*
* Copyright (C) ST-Ericsson SA 2011
* Authors: Srimanta Panda <srimanta.panda@stericsson.com>,
* Ola Borgelin <ola.borgelin@stericsson.com>,
* Karin Hedlund <karin.hedlund@stericsson.com>,
* Markus Andersson <markus.m.andersson@stericsson.com> for ST-Ericsson.
* License terms: 3-clause BSD license
*
*/
#include "stdafx.h"
#include "LibusbDevice_win.h"
#include "Debug.h"
#include "CommException.h"
#include <cstdio>
#include <iostream>
using namespace std;
#define MIN(A, B) ((A) < (B) ? (A) : (B))
LibusbDevice::LibusbDevice(struct usb_device* device):
device_(device),
inEndpoint_(-1),
outEndpoint_(-1)
{
// get the handle for the device
handle_ = usb_open(device_);
if (handle_ == NULL) {
throw CommException("failed to open usb device", COMM_DEVICE_LIBUSB_FAILED_TO_OPEN_PORT);
}
int configValue_ = device_->config->bConfigurationValue;
if (usb_set_configuration(handle_, configValue_)) {
Debug::error("Setting configuration failed!" );
throw CommException("Setting configuration failed!", COMM_DEVICE_LIBUSB_FAILED_TO_SET_CONFIG);
} else {
Debug::info("Configuration has been set successfully..");
}
if ((this->device_->config->bNumInterfaces > 0) && (this->device_->config->interface->num_altsetting > 0)) {
interfaceNumber_ = device_->config->interface->altsetting->bInterfaceNumber;
#if defined(LIBUSB_HAS_GET_DRIVER_NP)
#if defined(LIBUSB_HAS_DETACH_KERNEL_DRIVER_NP)
char name[256];
if (usb_get_driver_np(handle_, interfaceNumber_, (char *) name, sizeof(name))) {
Debug::info("Fetching driver name failed: %s", usb_strerror());
} else {
Debug::info("Driver name: %s", name);
if (usb_detach_kernel_driver_np(handle_, interfaceNumber_)) {
Debug::error("Detaching kernel driver failed: %s", usb_strerror());
}
Debug::info(""Kernel driver has been detached successfully.");
}
#endif
#endif
// Claim the interface for the device
if (usb_claim_interface(handle_, interfaceNumber_)) {
opened_ = false;
Debug::error("Claiming interface failed: %s", usb_strerror());
throw CommException("Claiming interface failed", COMM_DEVICE_LIBUSB_FAILED_TO_CLAIM_INTERFACE);
} else {
Debug::info("Interface has been claimed successfuly..");
opened_ = true;
}
Debug::info("Looking for endpoints..");
//find default endpoints
for (int i = 0; i < device_->config->interface->altsetting->bNumEndpoints; i++) {
if ((inEndpoint_ != -1) && (outEndpoint_ != -1)) break;
if (device_->config->interface->altsetting->endpoint[i].bEndpointAddress & 0x80) {
if ((inEndpoint_ == -1)
&& ((device_->config->interface->altsetting->endpoint[i].bmAttributes & 0x3f) == 0x2))
{
inEndpoint_ = device_->config->interface->altsetting->endpoint[i].bEndpointAddress;
Debug::info("Bulk IN endpoint found and ready to use on address %02xh", inEndpoint_);
}
} else {
if ((outEndpoint_ == -1)
&& ((device_->config->interface->altsetting->endpoint[i].bmAttributes & 0x3f) == 0x2))
{
outEndpoint_ = device_->config->interface->altsetting->endpoint[i].bEndpointAddress;
Debug::info("Bulk OUT endpoint found and ready to use on address %02xh", outEndpoint_);
}
}
}
if ((inEndpoint_ == -1) || (outEndpoint_ == -1)) {
Debug::error("Bulk endpoints cannot be found!");
throw CommException("Not able to set endpoints for device", COMM_DEVICE_LIBUSB_FAILED_TO_OPEN_PORT);
}
}
readBufferLength_ = 0;
readBufferHead_ = readBuffer_;
}
LibusbDevice::~LibusbDevice()
{
usb_release_interface(handle_, interfaceNumber_);
usb_close(handle_);
}
int LibusbDevice::read(void *buffer, size_t size)
{
Debug::info("LibusbDevice read: called with size %d", size);
unsigned char* dest = static_cast<unsigned char*>(buffer);
while (true) {
if (readBufferLength_) {
size_t toCopy = MIN(readBufferLength_, size);
memcpy(dest, readBufferHead_, toCopy);
dest += toCopy;
size -= toCopy;
readBufferLength_ -= toCopy;
if (readBufferLength_ != 0) {
readBufferHead_ += toCopy;
} else {
readBufferHead_ = readBuffer_;
}
}
if (size == 0) {
break;
}
int transfered;
transfered = usb_bulk_read(handle_, inEndpoint_, readBuffer_, READ_BUFFER_SIZE, 100000);
if (isReadCanceled_) {
Debug::info("LibusbDevice read: canceled...");
Debug::hexdump("read canceled", dest, transfered);
isReadCanceled_ = false;
return COMM_DEVICE_CANCEL;
}
if (transfered < 0) {
if( transfered == USB_TIMEOUT_ERROR) {
Debug::info("LibusbDevice read : Usb read timeout");
continue;
} else {
Debug::info("LibusbDevice read: error %d occured", transfered);
return transfered;
}
}
readBufferLength_ = transfered;
}
Debug::info("LibusbDevice read: complete");
return 0;
}
int LibusbDevice::write(void *buffer, size_t size)
{
Debug::info("LibusbDevice write: called with size %d", size);
char* src = static_cast<char*>(buffer);
while (size) {
int transfered;
//Call with timeout to enable possible cancel
transfered = usb_bulk_write(handle_, outEndpoint_, src, size, 100000);
if (transfered < 0) {
if( transfered == USB_TIMEOUT_ERROR) {
Debug::info("LibusbDevice write : Usb write timeout");
continue;
} else {
Debug::info("LibusbDevice write: error %d occured", transfered);
return transfered;
}
}
size -= transfered;
src += transfered;
}
Debug::info("LibusbDevice write: complete");
return 0;
}
int LibusbDevice::getVendorId()
{
return device_->descriptor.idVendor;
}
struct usb_device* LibusbDevice::getPort()
{
return device_;
}
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