--- /dev/null
+CC=gcc
+CFLAGS =-Wall -O0
+CFLAGS_DLL =-Wall -O0 -g -shared -Wl,--out-implib,libftdicom.a
+INC=-I. -I../libusb
+LIBS_PATHS= -L. -L../libusb
+LIBS_DLL= -lusb-1.0 -lpthreadGC2
+
+all: libftdicom.dll
+
+libftdicom.dll: crc32.c fastftdi.c ftdicom.c
+ $(CC) $(INC) -o $@ $(CFLAGS_DLL) $^ $(LIBS_PATHS) $(LIBS_DLL)
+
+clean:
+ rm libftdicom.a
+ rm libftdicom.dll
\ No newline at end of file
--- /dev/null
+#ifndef __CRC_H
+#define __CRC_H
+
+unsigned short crc16(const unsigned char *buffer, int len);
+unsigned int crc32(const unsigned char *buffer, unsigned int len);
+
+#endif
--- /dev/null
+/* crc32.c -- compute the CRC-32 of a data stream
+ * Copyright (C) 1995-1998 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include <crc.h>
+
+static const unsigned int crc_table[256] = {
+ 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
+ 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
+ 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
+ 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
+ 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
+ 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
+ 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
+ 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
+ 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
+ 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
+ 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
+ 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
+ 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
+ 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
+ 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
+ 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
+ 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
+ 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
+ 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
+ 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
+ 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
+ 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
+ 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
+ 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
+ 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
+ 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
+ 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
+ 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
+ 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
+ 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
+ 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
+ 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
+ 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
+ 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
+ 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
+ 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
+ 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
+ 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
+ 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
+ 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
+ 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
+ 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
+ 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
+ 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
+ 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
+ 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
+ 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
+ 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
+ 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
+ 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
+ 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
+ 0x2d02ef8dL
+};
+
+#define DO1(buf) crc = crc_table[((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8);
+#define DO2(buf) DO1(buf); DO1(buf);
+#define DO4(buf) DO2(buf); DO2(buf);
+#define DO8(buf) DO4(buf); DO4(buf);
+
+unsigned int crc32(const unsigned char *buffer, unsigned int len)
+{
+ unsigned int crc;
+ crc = 0;
+ crc = crc ^ 0xffffffffL;
+ while(len >= 8) {
+ DO8(buffer);
+ len -= 8;
+ }
+ if(len) do {
+ DO1(buffer);
+ } while(--len);
+ return crc ^ 0xffffffffL;
+}
--- /dev/null
+/*
+ * fastftdi.c - A minimal FTDI FT2232H interface for which supports bit-bang
+ * mode, but focuses on very high-performance support for
+ * synchronous FIFO mode. Requires libusb-1.0
+ *
+ * Copyright (C) 2009 Micah Elizabeth Scott
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include "fastftdi.h"
+
+#if defined _WIN32 || defined _WIN64
+ #include <time.h>
+ #include <sys/timeb.h>
+ int gettimeofday (struct timeval *tp, void *tz)
+ {
+ struct _timeb timebuffer;
+ _ftime (&timebuffer);
+ tp->tv_sec = timebuffer.time;
+ tp->tv_usec = timebuffer.millitm * 1000;
+ return 0;
+ }
+#endif
+
+typedef struct {
+ FTDIStreamCallback *callback;
+ void *userdata;
+ int result;
+ FTDIProgressInfo progress;
+} FTDIStreamState;
+
+static int
+DeviceInit(FTDIDevice *dev)
+{
+ int err, interface;
+
+ for (interface = 0; interface < 2; interface++) {
+ if (libusb_kernel_driver_active(dev->handle, interface) == 1) {
+ if ((err = libusb_detach_kernel_driver(dev->handle, interface))) {
+ perror("Error detaching kernel driver");
+ return err;
+ }
+ }
+ }
+
+ if ((err = libusb_set_configuration(dev->handle, 1))) {
+ perror("Error setting configuration");
+ return err;
+ }
+
+ for (interface = 0; interface < 2; interface++) {
+ if ((err = libusb_claim_interface(dev->handle, interface))) {
+ perror("Error claiming interface");
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+
+int
+FTDIDevice_Open(FTDIDevice *dev)
+{
+ int err;
+
+ memset(dev, 0, sizeof *dev);
+
+ if ((err = libusb_init(&dev->libusb))) {
+ return err;
+ }
+
+ libusb_set_debug(dev->libusb, 0);
+
+ dev->handle = libusb_open_device_with_vid_pid(dev->libusb,
+ LITEUSB_VENDOR,
+ LITEUSB_PRODUCT);
+
+ if (!dev->handle) {
+ dev->handle = libusb_open_device_with_vid_pid(dev->libusb,
+ FTDI_VENDOR,
+ FTDI_PRODUCT_FT2232H);
+ }
+
+ if (!dev->handle) {
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+
+ return DeviceInit(dev);
+}
+
+
+void
+FTDIDevice_Close(FTDIDevice *dev)
+{
+ libusb_close(dev->handle);
+ libusb_exit(dev->libusb);
+}
+
+
+int
+FTDIDevice_Reset(FTDIDevice *dev)
+{
+ int err;
+
+ err = libusb_reset_device(dev->handle);
+ if (err)
+ return err;
+
+ return DeviceInit(dev);
+}
+
+
+int
+FTDIDevice_SetMode(FTDIDevice *dev, FTDIInterface interface,
+ FTDIBitmode mode, uint8_t pinDirections,
+ int baudRate)
+{
+ int err;
+
+ err = libusb_control_transfer(dev->handle,
+ LIBUSB_REQUEST_TYPE_VENDOR
+ | LIBUSB_RECIPIENT_DEVICE
+ | LIBUSB_ENDPOINT_OUT,
+ FTDI_SET_BITMODE_REQUEST,
+ pinDirections | (mode << 8),
+ interface,
+ NULL, 0,
+ FTDI_COMMAND_TIMEOUT);
+ if (err)
+ return err;
+
+ if (baudRate) {
+ int divisor;
+
+ if (mode == FTDI_BITMODE_BITBANG)
+ baudRate <<= 2;
+
+ divisor = 240000000 / baudRate;
+ if (divisor < 1 || divisor > 0xFFFF) {
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ err = libusb_control_transfer(dev->handle,
+ LIBUSB_REQUEST_TYPE_VENDOR
+ | LIBUSB_RECIPIENT_DEVICE
+ | LIBUSB_ENDPOINT_OUT,
+ FTDI_SET_BAUD_REQUEST,
+ divisor,
+ interface,
+ NULL, 0,
+ FTDI_COMMAND_TIMEOUT);
+ if (err)
+ return err;
+ }
+
+ return err;
+}
+
+
+/*
+ * Internal callback for cleaning up async writes.
+ */
+
+static void
+WriteAsyncCallback(struct libusb_transfer *transfer)
+{
+ free(transfer->buffer);
+ libusb_free_transfer(transfer);
+}
+
+
+/*
+ * Write to an FTDI interface, either synchronously or asynchronously.
+ * Async writes have no completion callback, they finish 'eventually'.
+ */
+
+int
+FTDIDevice_Write(FTDIDevice *dev, FTDIInterface interface,
+ uint8_t *data, size_t length, bool async)
+{
+ int err;
+
+ if (async) {
+ struct libusb_transfer *transfer = libusb_alloc_transfer(0);
+
+ if (!transfer) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ libusb_fill_bulk_transfer(transfer, dev->handle, FTDI_EP_OUT(interface),
+ malloc(length), length, (libusb_transfer_cb_fn) WriteAsyncCallback, 0, 0);
+
+ if (!transfer->buffer) {
+ libusb_free_transfer(transfer);
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ memcpy(transfer->buffer, data, length);
+ err = libusb_submit_transfer(transfer);
+
+ } else {
+ int transferred;
+ err = libusb_bulk_transfer(dev->handle, FTDI_EP_OUT(interface),
+ data, length, &transferred,
+ FTDI_COMMAND_TIMEOUT);
+ }
+
+ if (err < 0)
+ return err;
+ else
+ return 0;
+}
+
+
+int
+FTDIDevice_WriteByteSync(FTDIDevice *dev, FTDIInterface interface, uint8_t byte)
+{
+ return FTDIDevice_Write(dev, interface, &byte, sizeof byte, false);
+}
+
+
+int
+FTDIDevice_ReadByteSync(FTDIDevice *dev, FTDIInterface interface, uint8_t *byte)
+{
+ /*
+ * This is a simplified synchronous read, intended for bit-banging mode.
+ * Ignores the modem/buffer status bytes, returns just the data.
+ *
+ */
+
+ uint8_t packet[3];
+ int transferred, err;
+
+ err = libusb_bulk_transfer(dev->handle, FTDI_EP_IN(interface),
+ packet, sizeof packet, &transferred,
+ FTDI_COMMAND_TIMEOUT);
+ if (err < 0) {
+ return err;
+ }
+ if (transferred != sizeof packet) {
+ return -1;
+ }
+
+ if (byte) {
+ *byte = packet[sizeof packet - 1];
+ }
+
+ return 0;
+}
+
+
+/*
+ * Internal callback for one transfer's worth of stream data.
+ * Split it into packets and invoke the callbacks.
+ */
+
+static void
+ReadStreamCallback(struct libusb_transfer *transfer)
+{
+ FTDIStreamState *state = transfer->user_data;
+
+ if (state->result == 0) {
+ if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
+
+ int i;
+ uint8_t *ptr = transfer->buffer;
+ int length = transfer->actual_length;
+ int numPackets = (length + FTDI_PACKET_SIZE - 1) >> FTDI_LOG_PACKET_SIZE;
+
+ for (i = 0; i < numPackets; i++) {
+ int payloadLen;
+ int packetLen = length;
+
+ if (packetLen > FTDI_PACKET_SIZE)
+ packetLen = FTDI_PACKET_SIZE;
+
+ payloadLen = packetLen - FTDI_HEADER_SIZE;
+ state->progress.current.totalBytes += payloadLen;
+
+ state->result = state->callback(ptr + FTDI_HEADER_SIZE, payloadLen,
+ NULL, state->userdata);
+ if (state->result)
+ break;
+
+ ptr += packetLen;
+ length -= packetLen;
+ }
+
+ } else {
+ state->result = LIBUSB_ERROR_IO;
+ }
+ }
+
+ if (state->result == 0) {
+ transfer->status = -1;
+ state->result = libusb_submit_transfer(transfer);
+ }
+}
+
+
+static double
+TimevalDiff(const struct timeval *a, const struct timeval *b)
+{
+ return (a->tv_sec - b->tv_sec) + 1e-6 * (a->tv_usec - b->tv_usec);
+}
+
+
+/*
+ * Use asynchronous transfers in libusb-1.0 for high-performance
+ * streaming of data from a device interface back to the PC. This
+ * function continuously transfers data until either an error occurs
+ * or the callback returns a nonzero value. This function returns
+ * a libusb error code or the callback's return value.
+ *
+ * For every contiguous block of received data, the callback will
+ * be invoked.
+ */
+
+int
+FTDIDevice_ReadStream(FTDIDevice *dev, FTDIInterface interface,
+ FTDIStreamCallback *callback, void *userdata,
+ int packetsPerTransfer, int numTransfers)
+{
+ struct libusb_transfer **transfers;
+ FTDIStreamState state = { callback, userdata };
+ int bufferSize = packetsPerTransfer * FTDI_PACKET_SIZE;
+ int xferIndex;
+ int err = 0;
+
+ /*
+ * Set up all transfers
+ */
+
+ transfers = calloc(numTransfers, sizeof *transfers);
+ if (!transfers) {
+ err = LIBUSB_ERROR_NO_MEM;
+ goto cleanup;
+ }
+
+ for (xferIndex = 0; xferIndex < numTransfers; xferIndex++) {
+ struct libusb_transfer *transfer;
+
+ transfer = libusb_alloc_transfer(0);
+ transfers[xferIndex] = transfer;
+ if (!transfer) {
+ err = LIBUSB_ERROR_NO_MEM;
+ goto cleanup;
+ }
+
+ libusb_fill_bulk_transfer(transfer, dev->handle, FTDI_EP_IN(interface),
+ malloc(bufferSize), bufferSize, (libusb_transfer_cb_fn) ReadStreamCallback,
+ &state, 0);
+
+ if (!transfer->buffer) {
+ err = LIBUSB_ERROR_NO_MEM;
+ goto cleanup;
+ }
+
+ transfer->status = -1;
+ err = libusb_submit_transfer(transfer);
+ if (err)
+ goto cleanup;
+ }
+
+ /*
+ * Run the transfers, and periodically assess progress.
+ */
+
+ gettimeofday(&state.progress.first.time, NULL);
+
+ do {
+ FTDIProgressInfo *progress = &state.progress;
+ const double progressInterval = 0.1;
+ struct timeval timeout = { 0, 10000 };
+ struct timeval now;
+
+ int err = libusb_handle_events_timeout(dev->libusb, &timeout);
+ if (!state.result) {
+ state.result = err;
+ }
+
+ // If enough time has elapsed, update the progress
+ gettimeofday(&now, NULL);
+ if (TimevalDiff(&now, &progress->current.time) >= progressInterval) {
+
+ progress->current.time = now;
+
+ if (progress->prev.totalBytes) {
+ // We have enough information to calculate rates
+
+ double currentTime;
+
+ progress->totalTime = TimevalDiff(&progress->current.time,
+ &progress->first.time);
+ currentTime = TimevalDiff(&progress->current.time,
+ &progress->prev.time);
+
+ progress->totalRate = progress->current.totalBytes / progress->totalTime;
+ progress->currentRate = (progress->current.totalBytes -
+ progress->prev.totalBytes) / currentTime;
+ }
+
+ state.result = state.callback(NULL, 0, progress, state.userdata);
+ progress->prev = progress->current;
+ }
+ } while (!state.result);
+
+ /*
+ * Cancel any outstanding transfers, and free memory.
+ */
+
+ cleanup:
+ if (transfers) {
+ bool done_cleanup = false;
+ while (!done_cleanup)
+ {
+ done_cleanup = true;
+
+ for (xferIndex = 0; xferIndex < numTransfers; xferIndex++) {
+ struct libusb_transfer *transfer = transfers[xferIndex];
+
+ if (transfer) {
+ // If a transfer is in progress, cancel it
+ if (transfer->status == -1) {
+ libusb_cancel_transfer(transfer);
+
+ // And we need to wait until we get a clean sweep
+ done_cleanup = false;
+
+ // If a transfer is complete or cancelled, nuke it
+ } else if (transfer->status == 0 ||
+ transfer->status == LIBUSB_TRANSFER_CANCELLED) {
+ free(transfer->buffer);
+ libusb_free_transfer(transfer);
+ transfers[xferIndex] = NULL;
+ }
+ }
+ }
+
+ // pump events
+ struct timeval timeout = { 0, 10000 };
+ libusb_handle_events_timeout(dev->libusb, &timeout);
+ }
+ free(transfers);
+ }
+
+ if (err)
+ return err;
+ else
+ return state.result;
+}
+
+/* MPSSE mode support -- see
+ * http://www.ftdichip.com/Support/Documents/AppNotes/AN_108_Command_Processor_for_MPSSE_and_MCU_Host_Bus_Emulation_Modes.pdf
+ */
+
+int
+FTDIDevice_MPSSE_Enable(FTDIDevice *dev, FTDIInterface interface)
+{
+ int err;
+
+ /* Reset interface */
+
+ err = FTDIDevice_SetMode(dev, interface, FTDI_BITMODE_RESET, 0, 0);
+ if (err)
+ return err;
+
+ /* Enable MPSSE mode */
+
+ err = FTDIDevice_SetMode(dev, interface, FTDI_BITMODE_MPSSE,
+ FTDI_SET_BITMODE_REQUEST, 0);
+
+ return err;
+}
+
+int
+FTDIDevice_MPSSE_SetDivisor(FTDIDevice *dev, FTDIInterface interface,
+ uint8_t ValueL, uint8_t ValueH)
+{
+ uint8_t buf[3] = {FTDI_MPSSE_SETDIVISOR, 0, 0};
+
+ buf[1] = ValueL;
+ buf[2] = ValueH;
+
+ return FTDIDevice_Write(dev, interface, buf, 3, false);
+}
+
+int
+FTDIDevice_MPSSE_SetLowByte(FTDIDevice *dev, FTDIInterface interface, uint8_t data, uint8_t dir)
+{
+ uint8_t buf[3] = {FTDI_MPSSE_SETLOW, 0, 0};
+
+ buf[1] = data;
+ buf[2] = dir;
+
+ return FTDIDevice_Write(dev, interface, buf, 3, false);
+}
+
+int
+FTDIDevice_MPSSE_SetHighByte(FTDIDevice *dev, FTDIInterface interface, uint8_t data, uint8_t dir)
+{
+ uint8_t buf[3] = {FTDI_MPSSE_SETHIGH, 0, 0};
+
+ buf[1] = data;
+ buf[2] = dir;
+
+ return FTDIDevice_Write(dev, interface, buf, 3, false);
+}
+
+int
+FTDIDevice_MPSSE_GetLowByte(FTDIDevice *dev, FTDIInterface interface, uint8_t *byte)
+{
+ int err;
+
+ err = FTDIDevice_WriteByteSync(dev, interface, FTDI_MPSSE_GETLOW);
+ if (err)
+ return err;
+
+ return FTDIDevice_ReadByteSync(dev, interface, byte);
+}
+
+int
+FTDIDevice_MPSSE_GetHighByte(FTDIDevice *dev, FTDIInterface interface, uint8_t *byte)
+{
+ int err;
+
+ err = FTDIDevice_WriteByteSync(dev, interface, FTDI_MPSSE_GETHIGH);
+ if (err)
+ return err;
+
+ return FTDIDevice_ReadByteSync(dev, interface, byte);
+}
--- /dev/null
+/*
+ * fastftdi.h - A minimal FTDI FT232H interface for Linux which supports
+ * bit-bang mode, but focuses on very high-performance support
+ * for synchronous FIFO mode.
+ *
+ * Copyright (C) 2009 Micah Elizabeth Scott
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef __FASTFTDI_H
+#define __FASTFTDI_H
+
+#include <libusb.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef enum {
+ FTDI_BITMODE_RESET = 0,
+ FTDI_BITMODE_BITBANG = 1 << 0,
+ FTDI_BITMODE_MPSSE = 1 << 1,
+ FTDI_BITMODE_SYNC_BITBANG = 1 << 2,
+ FTDI_BITMODE_MCU = 1 << 3,
+ FTDI_BITMODE_OPTO = 1 << 4,
+ FTDI_BITMODE_CBUS = 1 << 5,
+ FTDI_BITMODE_SYNC_FIFO = 1 << 6,
+} FTDIBitmode;
+
+typedef enum {
+ FTDI_MPSSE_SETLOW = 0x80,
+ FTDI_MPSSE_SETHIGH = 0x82,
+ FTDI_MPSSE_GETLOW = 0x81,
+ FTDI_MPSSE_GETHIGH = 0x83,
+ FTDI_MPSSE_SETDIVISOR = 0x86,
+} FTDIMPSSEOpcode;
+
+typedef enum {
+ FTDI_INTERFACE_A = 1,
+ FTDI_INTERFACE_B = 2,
+} FTDIInterface;
+
+typedef struct {
+ libusb_context *libusb;
+ libusb_device_handle *handle;
+} FTDIDevice;
+
+typedef struct {
+ struct {
+ uint64_t totalBytes;
+ struct timeval time;
+ } first, prev, current;
+
+ double totalTime;
+ double totalRate;
+ double currentRate;
+} FTDIProgressInfo;
+
+
+/*
+ * USB Constants
+ */
+
+#define FTDI_VENDOR 0x0403
+#define FTDI_PRODUCT_FT2232H 0x6010
+
+#define LITEUSB_VENDOR 0x1d50
+#define LITEUSB_PRODUCT 0x607c
+
+#define FTDI_COMMAND_TIMEOUT 1000
+
+#define FTDI_SET_BAUD_REQUEST 0x03
+#define FTDI_SET_BITMODE_REQUEST 0x0B
+
+#define FTDI_EP_IN(i) (0x81 + (i-1)*2)
+#define FTDI_EP_OUT(i) (0x02 + (i-1)*2)
+
+#define FTDI_PACKET_SIZE 512 // Specific to FT2232H
+#define FTDI_LOG_PACKET_SIZE 9 // 512 == 1 << 9
+#define FTDI_HEADER_SIZE 2
+
+typedef int (FTDIStreamCallback)(uint8_t *buffer, int length,
+ FTDIProgressInfo *progress, void *userdata);
+
+
+/*
+ * Public Functions
+ */
+
+int FTDIDevice_Open(FTDIDevice *dev);
+void FTDIDevice_Close(FTDIDevice *dev);
+int FTDIDevice_Reset(FTDIDevice *dev);
+
+int FTDIDevice_SetMode(FTDIDevice *dev, FTDIInterface interface,
+ FTDIBitmode mode, uint8_t pinDirections,
+ int baudRate);
+
+int FTDIDevice_Write(FTDIDevice *dev, FTDIInterface interface,
+ uint8_t *data, size_t length, bool async);
+
+int FTDIDevice_WriteByteSync(FTDIDevice *dev, FTDIInterface interface, uint8_t byte);
+int FTDIDevice_ReadByteSync(FTDIDevice *dev, FTDIInterface interface, uint8_t *byte);
+
+int FTDIDevice_ReadStream(FTDIDevice *dev, FTDIInterface interface,
+ FTDIStreamCallback *callback, void *userdata,
+ int packetsPerTransfer, int numTransfers);
+
+int FTDIDevice_MPSSE_Enable(FTDIDevice *dev, FTDIInterface interface);
+int FTDIDevice_MPSSE_SetDivisor(FTDIDevice *dev, FTDIInterface interface,
+ uint8_t ValueL, uint8_t ValueH);
+
+int FTDIDevice_MPSSE_SetLowByte(FTDIDevice *dev, FTDIInterface interface,
+ uint8_t data, uint8_t dir);
+int FTDIDevice_MPSSE_SetHighByte(FTDIDevice *dev, FTDIInterface interface,
+ uint8_t data, uint8_t dir);
+
+int FTDIDevice_MPSSE_GetLowByte(FTDIDevice *dev, FTDIInterface interface, uint8_t *byte);
+int FTDIDevice_MPSSE_GetHighByte(FTDIDevice *dev, FTDIInterface interface, uint8_t *byte);
+
+#endif /* __FASTFTDI_H */
--- /dev/null
+/*
+ * ftdicom.c - Low Level USB communication interface
+ *
+ * Provides UART and DMA low level communication
+ * functions for FT2232H in slave fifo mode.
+ *
+ * Copyright (C) 2014 florent@enjoy-digital.fr
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include "ftdicom.h"
+#include "crc.h"
+
+/*
+ * Open / close functions
+ */
+int ftdicom_open(FTDICom *com)
+{
+ int err = 0;
+ err = FTDIDevice_Open(com->dev);
+ if (err)
+ return err;
+
+ com->raw_tx_buf = malloc(RAW_BUFFER_SIZE);
+ com->raw_rx_buf = malloc(RAW_BUFFER_SIZE);
+ com->uart_rx_buf = malloc(UART_RINGBUFFER_SIZE_RX);
+
+ err = FTDIDevice_SetMode(com->dev, FTDI_INTERFACE_A, FTDI_BITMODE_SYNC_FIFO, 0xFF, 0);
+ if (err)
+ return err;
+
+ com->raw_rx_buf_length = 0;
+
+ pthread_t thread;
+ com->thread = &thread;
+ pthread_create(com->thread, NULL, ftdicom_read_thread, com);
+
+ return 0;
+}
+
+void ftdicom_close(FTDICom *com)
+{
+ free(com->raw_tx_buf);
+ free(com->raw_rx_buf);
+ free(com->uart_rx_buf);
+ FTDIDevice_Close(com->dev);
+ free(com->thread);
+}
+
+/*
+ * Write (Tx) functions
+ */
+int ftdicom_write(FTDICom *com, uint8_t tag, uint8_t *data, size_t length, uint8_t with_crc)
+{
+ unsigned int computed_crc;
+
+ com->raw_tx_buf[0] = 0x5A;
+ com->raw_tx_buf[1] = 0xA5;
+ com->raw_tx_buf[2] = 0x5A;
+ com->raw_tx_buf[3] = 0xA5;
+ com->raw_tx_buf[4] = tag;
+ if (with_crc)
+ length += 4;
+ com->raw_tx_buf[5] = (length >> 24) & 0xff;
+ com->raw_tx_buf[6] = (length >> 16) & 0xff;
+ com->raw_tx_buf[7] = (length >> 8) & 0xff;
+ com->raw_tx_buf[8] = (length >> 0) & 0xff;
+
+ memcpy(com->raw_tx_buf+9, data, length);
+ if (with_crc) {
+ computed_crc = crc32(data, length-4);
+ com->raw_tx_buf[9+length-1] = (computed_crc >> 24) & 0xff;
+ com->raw_tx_buf[9+length-2] = (computed_crc >> 16) & 0xff;
+ com->raw_tx_buf[9+length-3] = (computed_crc >> 8) & 0xff;
+ com->raw_tx_buf[9+length-4] = (computed_crc >> 0) & 0xff;
+ }
+ return FTDIDevice_Write(com->dev, FTDI_INTERFACE_A, com->raw_tx_buf, 9+length, false);
+}
+
+/*
+ * Read (Rx) common functions
+ */
+
+int ftdicom_present_bytes(uint8_t tag, uint8_t *buffer, int length)
+{
+ if (length < NEEDED_FOR_SIZE)
+ return INCOMPLETE;
+
+ if (buffer[0] != 0x5A ||
+ buffer[1] != 0xA5 ||
+ buffer[2] != 0x5A ||
+ buffer[3] != 0xA5 ||
+ buffer[4] != tag)
+ return UNMATCHED;
+
+ int size = NEEDED_FOR_SIZE;
+ size += buffer[5] << 24;
+ size += buffer[6] << 16;
+ size += buffer[7] << 8;
+ size += buffer[8];
+
+ if (length < size)
+ return INCOMPLETE;
+
+ return size;
+}
+
+int ftdicom_uart_present_bytes(uint8_t *buffer, int length)
+{
+ return ftdicom_present_bytes(UART_TAG, buffer, length);
+}
+
+int ftdicom_dma_present_bytes(uint8_t *buffer, int length)
+{
+ return ftdicom_present_bytes(DMA_TAG, buffer, length);
+}
+
+int ftdicom_read_callback(uint8_t *buffer, int length, FTDIProgressInfo *progress, void *userdata)
+{
+ FTDICom *com = (FTDICom *) userdata;
+
+ // Concatenate buffer & raw_rx_buf
+ memcpy(com->raw_rx_buf + com->raw_rx_buf_length, buffer, length);
+ com->raw_rx_buf_length += length;
+
+ int code = 0;
+ int incomplete = 0;
+ int i = 0;
+
+ // Search frames in raw_rx_buf
+ while (i != com->raw_rx_buf_length && !incomplete)
+ {
+ code = 0;
+
+ // UART
+ code = ftdicom_uart_present_bytes(com->raw_rx_buf + i, com->raw_rx_buf_length-i);
+ if (code == INCOMPLETE)
+ {
+ incomplete = 1;
+ break;
+ } else if (code)
+ {
+ ftdicom_uart_read_callback(com, com->raw_rx_buf + i + NEEDED_FOR_SIZE, code-NEEDED_FOR_SIZE);
+ i += code-1;
+ }
+
+ // DMA
+ code = ftdicom_dma_present_bytes(com->raw_rx_buf + i, com->raw_rx_buf_length-i);
+ if (code == INCOMPLETE)
+ {
+ incomplete = 1;
+ break;
+ } else if (code)
+ {
+ ftdicom_dma_read_callback(com, com->raw_rx_buf + i + NEEDED_FOR_SIZE, code-NEEDED_FOR_SIZE);
+ i += code;
+ }
+
+ // Nothing found, increment index
+ if (code == UNMATCHED)
+ i=i+1;
+
+ }
+
+ // Prepare raw_rx_buf for next callback
+ if (incomplete == 1)
+ {
+ com->raw_rx_buf_length = com->raw_rx_buf_length - i;
+ memcpy(com->raw_rx_buf, com->raw_rx_buf + i, com->raw_rx_buf_length);
+ } else {
+ com->raw_rx_buf_length = 0;
+ }
+
+ return 0;
+}
+
+void *ftdicom_read_thread(void *userdata)
+{
+ FTDICom *com = (FTDICom *) userdata;
+ FTDIDevice_ReadStream(com->dev, FTDI_INTERFACE_A, ftdicom_read_callback, com, 8, 16);
+ return 0;
+}
+
+/*
+ * UART functions
+ */
+
+int ftdicom_uart_write_buffer(FTDICom *com, uint8_t *data, size_t length)
+{
+ return ftdicom_write(com, UART_TAG, data, length, 0);
+}
+
+int ftdicom_uart_write(FTDICom *com, uint8_t c)
+{
+ return ftdicom_write(com, UART_TAG, &c, 1, 0);
+}
+
+void ftdicom_uart_read_callback(FTDICom *com, uint8_t *buffer, int length)
+{
+ while (length > 0) {
+ com->uart_rx_buf[com->uart_rx_produce] = buffer[0];
+ com->uart_rx_produce = (com->uart_rx_produce + 1) & UART_RINGBUFFER_MASK_RX;
+ length -=1;
+ buffer +=1;
+ }
+}
+
+uint8_t ftdicom_uart_read(FTDICom *com)
+{
+ uint8_t c;
+
+ while(com->uart_rx_consume == com->uart_rx_produce);
+ c = com->uart_rx_buf[com->uart_rx_consume];
+ com->uart_rx_consume = (com->uart_rx_consume + 1) & UART_RINGBUFFER_MASK_RX;
+ return c;
+}
+
+int ftdicom_uart_read_nonblock(FTDICom *com)
+{
+ return (com->uart_rx_consume != com->uart_rx_produce);
+}
+
+/*
+ * DMA functions
+ */
+int ftdicom_dma_write(FTDICom *com, uint8_t *data, size_t length)
+{
+ return ftdicom_write(com, DMA_TAG, data, length, 1);
+}
+
+void ftdicom_dma_read_set_callback(FTDICom *com, dma_read_ext_callback_t callback, void *userdata)
+{
+ com->dma_read_ext_callback = callback;
+ com->userdata = userdata;
+}
+
+int ftdicom_dma_read_callback(FTDICom *com, uint8_t *buffer, int length)
+{
+ unsigned int received_crc;
+ unsigned int computed_crc;
+
+ received_crc = ((unsigned int)buffer[length-1] << 24)
+ |((unsigned int)buffer[length-2] << 16)
+ |((unsigned int)buffer[length-3] << 8)
+ |((unsigned int)buffer[length-4]);
+ computed_crc = crc32(buffer, length-4);
+ if(received_crc != computed_crc) return -1;
+
+ if (com->dma_read_ext_callback != NULL)
+ return com->dma_read_ext_callback(buffer, length-4, com->userdata);
+ else
+ return -1;
+}
\ No newline at end of file
--- /dev/null
+/*
+ * ftdicom.c - Low Level USB communication interface
+ *
+ * Provides UART and DMA low level communication
+ * functions for FT2232H in slave fifo mode.
+ *
+ * Copyright (C) 2014 florent@enjoy-digital.fr
+ *
+ */
+
+#ifndef __FTDICOM_H
+#define __FTDICOM_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <pthread.h>
+
+#include "fastftdi.h"
+
+/*
+ * Protocol Constants
+ */
+
+#define UART_TAG 0
+#define DMA_TAG 1
+
+#define NEEDED_FOR_SIZE 9
+#define PAYLOAD_OFFSET 10
+
+#define INCOMPLETE -1
+#define UNMATCHED 0
+
+
+/*
+ * Buffer Constants
+ *
+ * Buffer sizes must be a power of 2 so that modulos can be computed
+ * with logical AND.
+ */
+
+// RAW
+#define RAW_BUFFER_SIZE 20*1024*1024
+
+// UART
+#define UART_RINGBUFFER_SIZE_RX 4096
+#define UART_RINGBUFFER_MASK_RX (UART_RINGBUFFER_SIZE_RX-1)
+
+// DMA
+#define DMA_BUFFER_SIZE_TX 20*1024*1024
+#define DMA_BUFFER_SIZE_RX 20*1024*1024
+
+
+/*
+ * Struct
+ */
+typedef int (*dma_read_ext_callback_t)(uint8_t *buffer, int length, void *userdata);
+typedef struct {
+ FTDIDevice *dev;
+
+ uint8_t *raw_tx_buf;
+ uint8_t *raw_rx_buf;
+ unsigned int raw_rx_buf_length;
+
+ char *uart_rx_buf;
+ volatile unsigned int uart_rx_produce;
+ volatile unsigned int uart_rx_consume;
+
+ pthread_t *thread;
+ dma_read_ext_callback_t dma_read_ext_callback;
+
+ void *userdata;
+} FTDICom;
+
+/*
+ * Public Functions
+ */
+
+int ftdicom_open(FTDICom *com);
+void ftdicom_close(FTDICom *com);
+
+int ftdicom_uart_write_buffer(FTDICom *com, uint8_t *data, size_t length);
+int ftdicom_uart_write(FTDICom *com, uint8_t c);
+uint8_t ftdicom_uart_read(FTDICom *com);
+int ftdicom_uart_read_nonblock(FTDICom *com);
+
+int ftdicom_dma_write(FTDICom *com, uint8_t *data, size_t length);
+void ftdicom_dma_read_set_callback(FTDICom *com, dma_read_ext_callback_t callback, void *userdata);
+
+/*
+ * Private Functions
+ */
+int ftdicom_write(FTDICom *com, uint8_t tag, uint8_t *data, size_t length, uint8_t with_crc);
+
+int ftdicom_present_bytes(uint8_t tag, uint8_t *buffer, int length);
+int ftdicom_uart_present_bytes(uint8_t *buffer, int length);
+int ftdicom_dma_present_bytes(uint8_t *buffer, int length);
+int ftdicom_read_callback(uint8_t *buffer, int length, FTDIProgressInfo *progress, void *userdata);
+void *ftdicom_read_thread(void *userdata);
+
+void ftdicom_uart_read_callback(FTDICom *com, uint8_t *buffer, int length);
+int ftdicom_dma_read_callback(FTDICom *com, uint8_t *buffer, int length);
+
+
+#endif /* __FTDICOM_H */
projects / litex.git / commitdiff