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