noolitelib/src/libusbdevice.cpp

#include "libusbdevice.h"

#include <libusb-1.0/libusb.h>
#include <iostream>

namespace noolitelib
{

constexpr auto DefaultTimeout = 1000;

LibUsbDevice::LibUsbDevice()
{
    auto status = libusb_init(&m_context);
    if (status) {
        std::cerr << "Error initializing context: " << libusb_strerror(status) << " [" << status << "]" << std::endl;
    }
}

LibUsbDevice::~LibUsbDevice()
{
    if (m_context) {
        libusb_exit(m_context);
    }
}

void LibUsbDevice::openDevice(uint16_t vendorId, uint16_t productId)
{
    m_device = libusb_open_device_with_vid_pid(m_context, vendorId, productId);
}

void LibUsbDevice::close()
{
    if (m_device) {
        libusb_close(m_device);
    }
}

bool LibUsbDevice::sendDataToDevice(const Data &data)
{
    if (!m_device) {
        std::cerr << "Device not opened" << std::endl;
        return false;
    }

    auto requestType = LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_INTERFACE;
    auto request = LIBUSB_REQUEST_SET_CONFIGURATION;

    unsigned char package[data.size()];
    std::copy(data.begin(), data.end(), package);

    auto status = libusb_control_transfer(m_device, requestType, request, 0, 0, package, data.size(), DefaultTimeout);

    if (status) {
        std::cerr << "Sending data error: " << libusb_strerror(status) << " [" << status << "]" << std::endl;
        return false;
    }

    return true;
}

}