329 lines
9.5 KiB
C++
329 lines
9.5 KiB
C++
#include "platform/windows/include/ftdi.h"
|
|
#include "platform/include/ftdi.h"
|
|
#include "platform/include/registry.h"
|
|
#include <iostream>
|
|
#include <iomanip>
|
|
#include <sstream>
|
|
#include <cwctype>
|
|
#include <algorithm>
|
|
#include <codecvt>
|
|
#include <limits>
|
|
#include <stdio.h>
|
|
|
|
using namespace icsneo;
|
|
|
|
static std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
|
|
static const std::wstring DRIVER_SERVICES_REG_KEY = L"SYSTEM\\CurrentControlSet\\services\\";
|
|
static const std::wstring ALL_ENUM_REG_KEY = L"SYSTEM\\CurrentControlSet\\Enum\\";
|
|
static constexpr unsigned int RETRY_TIMES = 5;
|
|
static constexpr unsigned int RETRY_DELAY = 50;
|
|
|
|
std::vector<neodevice_t> VCP::FindByProduct(int product, wchar_t* driverName) {
|
|
std::vector<neodevice_t> found;
|
|
|
|
std::wstringstream regss;
|
|
regss << DRIVER_SERVICES_REG_KEY << driverName << L"\\Enum\\";
|
|
std::wstring driverEnumRegKey = regss.str();
|
|
|
|
uint32_t deviceCount = 0;
|
|
if(!Registry::Get(driverEnumRegKey, L"Count", deviceCount)) {
|
|
return found;
|
|
}
|
|
|
|
for(uint32_t i = 0; i < deviceCount; i++) {
|
|
neodevice_t device = {};
|
|
|
|
// First we want to look at what devices FTDI is enumerating (inside driverEnumRegKey)
|
|
// The entry for a ValueCAN 3 with SN 138635 looks like "FTDIBUS\VID_093C+PID_0601+138635A\0000"
|
|
// The entry for a ValueCAN 4 with SN V20227 looks like "USB\VID_093C&PID_1101\V20227"
|
|
std::wstringstream ss;
|
|
ss << i;
|
|
std::wstring entry;
|
|
if(!Registry::Get(driverEnumRegKey, ss.str(), entry))
|
|
continue;
|
|
|
|
std::transform(entry.begin(), entry.end(), entry.begin(), std::towupper);
|
|
|
|
std::wstringstream vss;
|
|
vss << "VID_" << std::setfill(L'0') << std::setw(4) << std::uppercase << std::hex << INTREPID_USB_VENDOR_ID; // Intrepid Vendor ID
|
|
if(entry.find(vss.str()) == std::wstring::npos)
|
|
continue;
|
|
|
|
std::wstringstream pss;
|
|
pss << "PID_" << std::setfill(L'0') << std::setw(4) << std::uppercase << std::hex << product;
|
|
auto pidpos = entry.find(pss.str());
|
|
if(pidpos == std::wstring::npos)
|
|
continue;
|
|
|
|
// Okay, this is a device we want
|
|
// Get the serial number
|
|
auto startchar = entry.find(L"+", pidpos + 1);
|
|
if(startchar == std::wstring::npos)
|
|
startchar = entry.find(L"\\", pidpos + 1);
|
|
bool conversionError = false;
|
|
int sn = 0;
|
|
try {
|
|
sn = std::stoi(entry.substr(startchar + 1));
|
|
} catch(...) {
|
|
conversionError = true;
|
|
}
|
|
|
|
std::wstringstream oss;
|
|
if(!sn || conversionError) {
|
|
// This is a device with characters in the serial number
|
|
oss << entry.substr(startchar + 1, 6);
|
|
} else {
|
|
oss << sn;
|
|
}
|
|
|
|
strcpy_s(device.serial, sizeof(device.serial), converter.to_bytes(oss.str()).c_str());
|
|
|
|
// Serial number is saved, we want the COM port number now
|
|
// This will be stored under ALL_ENUM_REG_KEY\entry\Device Parameters\PortName (entry from the FTDI_ENUM)
|
|
std::wstringstream dpss;
|
|
dpss << ALL_ENUM_REG_KEY << entry << L"\\Device Parameters";
|
|
std::wstring port;
|
|
Registry::Get(dpss.str(), L"PortName", port); // TODO If error do something else (Plasma maybe?)
|
|
std::transform(port.begin(), port.end(), port.begin(), std::towupper);
|
|
auto compos = port.find(L"COM");
|
|
device.handle = 0;
|
|
if(compos != std::wstring::npos) {
|
|
try {
|
|
device.handle = std::stoi(port.substr(compos + 3));
|
|
} catch(...) {} // In case of this, or any other error, handle has already been initialized to 0
|
|
}
|
|
|
|
found.push_back(device);
|
|
}
|
|
|
|
return found;
|
|
}
|
|
|
|
bool VCP::IsHandleValid(neodevice_handle_t handle) {
|
|
if(handle < 1)
|
|
return false;
|
|
|
|
if(handle > 256) // Windows default max COM port is COM256
|
|
return false; // TODO Enumerate subkeys of HKLM\HARDWARE\DEVICEMAP\SERIALCOMM as a user might have more serial ports somehow
|
|
|
|
return true;
|
|
}
|
|
|
|
bool VCP::open(bool fromAsync) {
|
|
if(isOpen() || (!fromAsync && opening))
|
|
return false;
|
|
|
|
if(!IsHandleValid(device.handle))
|
|
return false;
|
|
|
|
opening = true;
|
|
|
|
std::wstringstream comss;
|
|
comss << L"\\\\.\\COM" << device.handle;
|
|
|
|
// We're going to attempt to open 5 (RETRY_TIMES) times in a row
|
|
for(int i = 0; !isOpen() && i < RETRY_TIMES; i++) {
|
|
handle = CreateFileW(comss.str().c_str(), GENERIC_READ | GENERIC_WRITE, 0, nullptr, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, nullptr);
|
|
if(GetLastError() == ERROR_SUCCESS)
|
|
break; // We have the file handle
|
|
|
|
std::this_thread::sleep_for(std::chrono::milliseconds(RETRY_DELAY));
|
|
}
|
|
|
|
opening = false;
|
|
|
|
if(!isOpen())
|
|
return false;
|
|
|
|
// Set the timeouts
|
|
COMMTIMEOUTS timeouts;
|
|
if(!GetCommTimeouts(handle, &timeouts)) {
|
|
close();
|
|
return false;
|
|
}
|
|
|
|
timeouts.WriteTotalTimeoutConstant = 10000;
|
|
timeouts.WriteTotalTimeoutMultiplier = 0;
|
|
|
|
if(!SetCommTimeouts(handle, &timeouts)) {
|
|
close();
|
|
return false;
|
|
}
|
|
|
|
// Set the COM state
|
|
DCB comstate;
|
|
if(!GetCommState(handle, &comstate)) {
|
|
close();
|
|
return false;
|
|
}
|
|
|
|
comstate.BaudRate = 115200;
|
|
comstate.ByteSize = 8;
|
|
comstate.Parity = NOPARITY;
|
|
comstate.StopBits = 0;
|
|
comstate.fDtrControl = DTR_CONTROL_ENABLE;
|
|
comstate.fRtsControl = RTS_CONTROL_ENABLE;
|
|
|
|
if(!SetCommState(handle, &comstate)) {
|
|
close();
|
|
return false;
|
|
}
|
|
|
|
PurgeComm(handle, PURGE_RXCLEAR);
|
|
|
|
// Set up events so that overlapped IO can work with them
|
|
overlappedRead.hEvent = CreateEvent(nullptr, false, false, nullptr);
|
|
overlappedWrite.hEvent = CreateEvent(nullptr, false, false, nullptr);
|
|
overlappedWait.hEvent = CreateEvent(nullptr, true, false, nullptr);
|
|
if (overlappedRead.hEvent == nullptr || overlappedWrite.hEvent == nullptr || overlappedWait.hEvent == nullptr) {
|
|
close();
|
|
return false;
|
|
}
|
|
|
|
// Set up event so that we will satisfy overlappedWait when a character comes in
|
|
if(!SetCommMask(handle, EV_RXCHAR)) {
|
|
close();
|
|
return false;
|
|
}
|
|
|
|
// TODO Set up some sort of shared memory, save which COM port we have open so we don't try to open it again
|
|
|
|
// Create threads
|
|
readThread = std::thread(&VCP::readTask, this);
|
|
writeThread = std::thread(&VCP::writeTask, this);
|
|
|
|
return true;
|
|
}
|
|
|
|
void VCP::openAsync(fn_boolCallback callback) {
|
|
threads.push_back(std::make_shared<std::thread>([&]() {
|
|
callback(open(true));
|
|
}));
|
|
}
|
|
|
|
bool VCP::close() {
|
|
if(!isOpen())
|
|
return false;
|
|
|
|
closing = true; // Signal the threads that we are closing
|
|
for(auto& t : threads)
|
|
t->join(); // Wait for the threads to close
|
|
readThread.join();
|
|
writeThread.join();
|
|
|
|
if(!CloseHandle(handle))
|
|
return false;
|
|
|
|
handle = INVALID_HANDLE_VALUE;
|
|
|
|
bool ret = true; // If one of the events fails closing, we probably still want to try and close the others
|
|
if(overlappedRead.hEvent != INVALID_HANDLE_VALUE) {
|
|
if(!CloseHandle(overlappedRead.hEvent))
|
|
ret = false;
|
|
}
|
|
if(overlappedWrite.hEvent != INVALID_HANDLE_VALUE) {
|
|
if(!CloseHandle(overlappedWrite.hEvent))
|
|
ret = false;
|
|
}
|
|
if(overlappedWait.hEvent != INVALID_HANDLE_VALUE) {
|
|
if(!CloseHandle(overlappedWait.hEvent))
|
|
ret = false;
|
|
}
|
|
|
|
// TODO Set up some sort of shared memory, free which COM port we had open so we can try to open it again
|
|
|
|
return ret;
|
|
}
|
|
|
|
void VCP::readTask() {
|
|
constexpr size_t READ_BUFFER_SIZE = 10240;
|
|
uint8_t readbuf[READ_BUFFER_SIZE];
|
|
IOTaskState state = LAUNCH;
|
|
DWORD bytesRead = 0;
|
|
while(!closing) {
|
|
switch(state) {
|
|
case LAUNCH: {
|
|
COMSTAT comStatus;
|
|
unsigned long errorCodes;
|
|
if(!ClearCommError(handle, &errorCodes, &comStatus))
|
|
std::cout << "Error clearing com err" << std::endl;
|
|
|
|
bytesRead = 0;
|
|
if(ReadFile(handle, readbuf, READ_BUFFER_SIZE, nullptr, &overlappedRead)) {
|
|
if(GetOverlappedResult(handle, &overlappedRead, &bytesRead, FALSE)) {
|
|
if(bytesRead)
|
|
readQueue.enqueue_bulk(readbuf, bytesRead);
|
|
} else {
|
|
std::cout <<"Readfile succeeded but not enqueued " << GetLastError() << std::endl;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
auto err = GetLastError();
|
|
if(err == ERROR_SUCCESS)
|
|
std::cout << "Error was success?" << std::endl;
|
|
|
|
if(err == ERROR_IO_PENDING)
|
|
state = WAIT;
|
|
else
|
|
std::cout << "ReadFile failed " << err << std::endl;
|
|
}
|
|
break;
|
|
case WAIT: {
|
|
auto ret = WaitForSingleObject(overlappedRead.hEvent, 100);
|
|
if(ret == WAIT_OBJECT_0) {
|
|
auto err = GetLastError();
|
|
if(GetOverlappedResult(handle, &overlappedRead, &bytesRead, FALSE)) {
|
|
readQueue.enqueue_bulk(readbuf, bytesRead);
|
|
state = LAUNCH;
|
|
} else
|
|
std::cout << "ReadFile deferred failed " << err << std::endl;
|
|
}
|
|
if(ret == WAIT_ABANDONED) {
|
|
state = LAUNCH;
|
|
std::cout << "Readfile abandoned" << std::endl;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void VCP::writeTask() {
|
|
IOTaskState state = LAUNCH;
|
|
VCP::WriteOperation writeOp;
|
|
DWORD bytesWritten = 0;
|
|
while(!closing) {
|
|
switch(state) {
|
|
case LAUNCH: {
|
|
if(!writeQueue.wait_dequeue_timed(writeOp, std::chrono::milliseconds(100)))
|
|
continue;
|
|
|
|
bytesWritten = 0;
|
|
if(WriteFile(handle, writeOp.bytes.data(), (DWORD)writeOp.bytes.size(), nullptr, &overlappedWrite))
|
|
continue;
|
|
|
|
auto err = GetLastError();
|
|
if(err == ERROR_IO_PENDING) {
|
|
state = WAIT;
|
|
}
|
|
else
|
|
std::cout << "Writefile failed " << err << std::endl;
|
|
}
|
|
break;
|
|
case WAIT: {
|
|
auto ret = WaitForSingleObject(overlappedWrite.hEvent, 50);
|
|
if(ret == WAIT_OBJECT_0) {
|
|
if(!GetOverlappedResult(handle, &overlappedWrite, &bytesWritten, FALSE)) {
|
|
std::cout << "Writefile deferred failed " << GetLastError() << std::endl;
|
|
}
|
|
state = LAUNCH;
|
|
}
|
|
|
|
if(ret == WAIT_ABANDONED) {
|
|
std::cout << "Writefile deferred abandoned" << std::endl;
|
|
state = LAUNCH;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} |