avrdude/external/libftdi1/src/ftdi.cpp

321 lines
7.8 KiB
C++

/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2019 Marius Greuel
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "libwinftdi.h"
#include <winsock2.h>
#include <ftdi.h>
using namespace LibWinFtdi;
static ftdi_chip_type MapChipType(ULONG type)
{
switch (type)
{
case FT_DEVICE_BM:
return TYPE_BM;
case FT_DEVICE_AM:
return TYPE_AM;
case FT_DEVICE_100AX:
return TYPE_AM;
case FT_DEVICE_2232C:
return TYPE_2232C;
case FT_DEVICE_232R:
return TYPE_R;
case FT_DEVICE_2232H:
return TYPE_2232H;
case FT_DEVICE_4232H:
return TYPE_4232H;
case FT_DEVICE_232H:
return TYPE_232H;
default:
return TYPE_AM;
}
}
static int SetError(struct ftdi_context* ftdi, int result, const char* error_str)
{
if (ftdi != nullptr)
{
ftdi->error_str = error_str;
}
return result;
}
const char* ftdi_get_error_string(struct ftdi_context* ftdi)
{
return ftdi != nullptr && ftdi->error_str != nullptr ? ftdi->error_str : "unknown error";
}
struct ftdi_context* ftdi_new(void)
{
struct ftdi_context* ftdi = new struct ftdi_context();
if (ftdi_init(ftdi) != 0)
{
delete ftdi;
return nullptr;
}
return ftdi;
}
void ftdi_free(struct ftdi_context* ftdi)
{
ftdi_deinit(ftdi);
delete ftdi;
}
int ftdi_set_interface(struct ftdi_context* ftdi, enum ftdi_interface interface)
{
return 0;
}
int ftdi_init(struct ftdi_context* ftdi)
{
std::memset(ftdi, 0, sizeof(struct ftdi_context));
return 0;
}
void ftdi_deinit(struct ftdi_context* ftdi)
{
if (ftdi->usb_dev != nullptr)
{
std::unique_ptr<FtdiDevice> device(reinterpret_cast<FtdiDevice*>(ftdi->usb_dev));
ftdi->usb_dev = nullptr;
}
}
int ftdi_usb_open_desc_index(struct ftdi_context* ftdi, int vendor, int product,
const char* description, const char* serial, unsigned int index)
{
if (ftdi == nullptr)
{
return SetError(ftdi, -3, "invalid ftdi context");
}
FtdiEnumerator enumerator;
auto status = enumerator.EnumerateDevices();
if (status != FT_OK)
{
return SetError(ftdi, -3, "failed to enumerate devices");
}
for (auto const& info : enumerator.GetDevices())
{
if ((info.Flags & FT_FLAGS_OPENED) != 0)
continue;
if (vendor != static_cast<uint16_t>(info.ID >> 16))
continue;
if (product != static_cast<uint16_t>(info.ID >> 0))
continue;
if (description != nullptr && strcmp(description, info.Description) != 0)
continue;
if (serial != nullptr && strcmp(serial, info.SerialNumber) != 0)
continue;
if (index > 0)
{
index--;
continue;
}
auto device = std::make_unique<FtdiDevice>();
auto status = device->OpenBySerialNumber(info.SerialNumber);
if (status != FT_OK)
{
return SetError(ftdi, -3, "failed to open device");
}
device->SetEventNotification(FT_EVENT_RXCHAR);
ftdi->type = MapChipType(info.Type);
ftdi->usb_dev = reinterpret_cast<struct libusb_device_handle*>(device.release());
return 0;
}
return SetError(ftdi, -3, "device not found");
}
int ftdi_usb_close(struct ftdi_context* ftdi)
{
if (ftdi == nullptr || ftdi->usb_dev == nullptr)
{
return SetError(ftdi, -3, "invalid device");
}
auto device = reinterpret_cast<FtdiDevice*>(ftdi->usb_dev);
auto status = device->Close();
if (status != FT_OK)
{
return SetError(ftdi, -1, "Failed to close device");
}
return 0;
}
int ftdi_usb_purge_buffers(struct ftdi_context* ftdi)
{
if (ftdi == nullptr || ftdi->usb_dev == nullptr)
{
return SetError(ftdi, -3, "invalid device");
}
auto device = reinterpret_cast<FtdiDevice*>(ftdi->usb_dev);
auto status = device->Purge();
if (status != FT_OK)
{
return SetError(ftdi, -1, "Failed to purge buffers");
}
return 0;
}
int ftdi_set_baudrate(struct ftdi_context* ftdi, int baudrate)
{
if (ftdi == nullptr || ftdi->usb_dev == nullptr)
{
return SetError(ftdi, -3, "invalid device");
}
if (ftdi->bitbang_enabled)
{
baudrate /= 16;
}
if (baudrate <= 0)
{
return SetError(ftdi, -1, "invalid baudrate");
}
auto device = reinterpret_cast<FtdiDevice*>(ftdi->usb_dev);
auto status = device->SetBaudRate(baudrate);
if (status != FT_OK)
{
return SetError(ftdi, -2, "Failed to set baudrate");
}
ftdi->baudrate = baudrate;
return 0;
}
int ftdi_set_bitmode(struct ftdi_context* ftdi, unsigned char bitmask, unsigned char mode)
{
if (ftdi == nullptr || ftdi->usb_dev == nullptr)
{
return SetError(ftdi, -2, "invalid device");
}
auto device = reinterpret_cast<FtdiDevice*>(ftdi->usb_dev);
auto status = device->SetBitMode(bitmask, mode);
if (status != FT_OK)
{
return SetError(ftdi, -1, "Failed to set bitmode");
}
ftdi->bitbang_mode = mode;
ftdi->bitbang_enabled = mode == BITMODE_RESET ? 0 : 1;
return 0;
}
int ftdi_set_latency_timer(struct ftdi_context* ftdi, unsigned char latency)
{
if (ftdi == nullptr || ftdi->usb_dev == nullptr)
{
return SetError(ftdi, -3, "invalid device");
}
if (latency < 1)
{
return SetError(ftdi, -1, "invalid latency");
}
auto device = reinterpret_cast<FtdiDevice*>(ftdi->usb_dev);
auto status = device->SetLatencyTimer(latency);
if (status != FT_OK)
{
return SetError(ftdi, -1, "Failed to set latency timer");
}
return 0;
}
int ftdi_read_data(struct ftdi_context* ftdi, unsigned char* buf, int size)
{
if (ftdi == nullptr || ftdi->usb_dev == nullptr)
{
return SetError(ftdi, -666, "invalid device");
}
auto device = reinterpret_cast<FtdiDevice*>(ftdi->usb_dev);
auto handle = device->GetNotificationEvent();
if (handle != nullptr)
{
DWORD dwStatus = WaitForSingleObject(handle, 1000);
if (dwStatus != WAIT_OBJECT_0)
{
return 0;
}
}
DWORD bytesInQueue = 0;
auto status = device->GetQueueStatus(&bytesInQueue);
if (status != FT_OK)
{
return SetError(ftdi, -1, "Failed to get queue status");
}
DWORD bytesRead = 0;
if (bytesInQueue > 0)
{
if (size > static_cast<int>(bytesInQueue))
size = static_cast<int>(bytesInQueue);
status = device->Read(buf, size, &bytesRead);
if (status != FT_OK)
{
return SetError(ftdi, -1, "Failed to read data");
}
}
return bytesRead;
}
int ftdi_write_data(struct ftdi_context* ftdi, const unsigned char* buf, int size)
{
if (ftdi == nullptr || ftdi->usb_dev == nullptr)
{
return SetError(ftdi, -666, "invalid device");
}
auto device = reinterpret_cast<FtdiDevice*>(ftdi->usb_dev);
DWORD bytesWritten = 0;
auto status = device->Write(const_cast<unsigned char*>(buf), size, &bytesWritten);
if (status != FT_OK)
{
return SetError(ftdi, -1, "Failed to write data");
}
return bytesWritten;
}