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//
// Java Does USB
// Copyright (c) 2022 Manuel Bleichenbacher
// Licensed under MIT License
// https://opensource.org/licenses/MIT
//
// Reference C++ code for macOS
//
#include "tests.hpp"
#include "assertion.hpp"
#include <iostream>
#include <random>
using random_ushort_engine = std::independent_bits_engine<
std::default_random_engine, 16, unsigned short>;
void tests::run() {
registry.start();
for (auto device : registry.get_devices()) {
std::cout << "Present: " << device->description() << std::endl;
}
registry.set_on_device_connected([this](auto device) { on_device_connected(device); });
registry.set_on_device_disconnected([this](auto device) { on_device_disconnected(device); });
for (auto device : registry.get_devices())
on_device(device);
std::cout << "Press RETURN to quit" << std::endl;
std::string line;
std::getline(std::cin, line);
}
void tests::test_current_device() {
std::cout << "Found test device" << std::endl;
test_device->open();
test_device->claim_interface(0);
test_control_transfers();
test_bulk_transfers();
test_device->release_interface();
test_device->close();
std::cout << "Test completed" << std::endl;
}
void tests::test_control_transfers() {
usb_control_request request_set_value_no_data = {
.bmRequestType = usb_control_request::request_type(usb_request_type::direction_out,
usb_request_type::type_vendor,
usb_request_type::recipient_interface),
.bRequest = 0x01,
.wValue = 0x9a41,
.wIndex = 0, // interface number
.wLength = 0
};
test_device->control_transfer(request_set_value_no_data);
usb_control_request request_get_data = {
.bmRequestType = usb_control_request::request_type(usb_request_type::direction_in,
usb_request_type::type_vendor,
usb_request_type::recipient_interface),
.bRequest = 0x03,
.wValue = 0,
.wIndex = 0, // interface number
.wLength = 4
};
auto data = test_device->control_transfer_in(request_get_data);
std::vector<uint8_t> expected_data{ 0x41, 0x9a, 0x00, 0x00 };
assert_equals(expected_data, data);
std::vector<uint8_t> sent_value{ 0x83, 0x03, 0xda, 0x3d };
usb_control_request request_set_value_data = {
.bmRequestType = usb_control_request::request_type(usb_request_type::direction_out,
usb_request_type::type_vendor,
usb_request_type::recipient_interface),
.bRequest = 0x02,
.wValue = 0,
.wIndex = 0, // interface number
.wLength = static_cast<uint16_t>(sent_value.size())
};
test_device->control_transfer_out(request_set_value_data, sent_value);
data = test_device->control_transfer_in(request_get_data);
assert_equals(sent_value, data);
}
void tests::test_bulk_transfers() {
test_loopback(12);
test_loopback(130);
test_loopback(123709);
}
void tests::test_loopback(int num_bytes) {
// generate random bytes
auto random_data = random_bytes(num_bytes);
// prepare vector for receiving data
std::vector<uint8_t> rx_data;
rx_data.reserve(num_bytes);
// read in separate thread
std::thread reader([this, &rx_data, num_bytes]() {
int bytes_read = 0;
while (bytes_read < num_bytes) {
auto data = test_device->transfer_in(2, 64);
rx_data.insert(rx_data.end(), data.begin(), data.end());
bytes_read += data.size();
}
});
// send rand bytes in chunks
const int chunk_size = 100;
int bytes_written = 0;
while (bytes_written < num_bytes) {
int size = std::min(chunk_size, num_bytes - bytes_written);
std::vector<uint8_t> chunk = {random_data.begin() + bytes_written, random_data.begin() + bytes_written + size};
test_device->transfer_out(1, chunk);
bytes_written += size;
}
// wait for reader
reader.join();
// check result
assert_equals(random_data, rx_data);
}
void tests::on_device(usb_device_ptr device) {
if (is_test_device(device)) {
test_device = device;
test_current_device();
test_device = nullptr;
}
}
void tests::on_device_connected(usb_device_ptr device) {
std::cout << "Connected: " << device->description() << std::endl;
on_device(device);
}
void tests::on_device_disconnected(usb_device_ptr device) {
std::cout << "Disconnected: " << device->description() << std::endl;
}
std::vector<uint8_t> tests::random_bytes(int num) {
random_ushort_engine rbe;
std::vector<unsigned short> data((num + 1) / 2);
std::generate(begin(data), end(data), std::ref(rbe));
const uint8_t* p = reinterpret_cast<const uint8_t*>(data.data());
return std::vector<uint8_t>(p, p + num);
}
bool tests::is_test_device(usb_device_ptr device) {
return device->vendor_id() == 0xcafe && device->product_id() == 0xceaf;
}