add ft2232h software code (will need rework)
This commit is contained in:
Florent Kermarrec
parent
b59c777cab
commit
7837580020
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@ -0,0 +1,15 @@
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CC=gcc
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CFLAGS =-Wall -O0
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CFLAGS_DLL =-Wall -O0 -g -shared -Wl,--out-implib,libftdicom.a
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INC=-I. -I../libusb
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LIBS_PATHS= -L. -L../libusb
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LIBS_DLL= -lusb-1.0 -lpthreadGC2
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all: libftdicom.dll
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libftdicom.dll: crc32.c fastftdi.c ftdicom.c
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$(CC) $(INC) -o $@ $(CFLAGS_DLL) $^ $(LIBS_PATHS) $(LIBS_DLL)
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clean:
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rm libftdicom.a
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rm libftdicom.dll
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@ -0,0 +1,7 @@
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#ifndef __CRC_H
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#define __CRC_H
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unsigned short crc16(const unsigned char *buffer, int len);
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unsigned int crc32(const unsigned char *buffer, unsigned int len);
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#endif
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@ -0,0 +1,81 @@
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/* crc32.c -- compute the CRC-32 of a data stream
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* Copyright (C) 1995-1998 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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#include <crc.h>
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static const unsigned int crc_table[256] = {
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0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
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0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
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0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
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0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
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0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
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0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
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0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
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0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
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0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
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0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
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0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
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0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
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0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
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0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
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0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
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0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
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0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
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0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
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0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
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0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
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0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
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0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
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0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
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0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
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0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
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0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
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0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
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0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
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0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
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0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
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0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
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0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
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0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
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0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
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0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
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0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
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0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
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0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
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0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
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0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
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0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
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0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
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0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
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0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
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0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
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0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
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0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
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0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
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0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
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0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
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0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
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0x2d02ef8dL
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};
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#define DO1(buf) crc = crc_table[((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8);
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#define DO2(buf) DO1(buf); DO1(buf);
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#define DO4(buf) DO2(buf); DO2(buf);
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#define DO8(buf) DO4(buf); DO4(buf);
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unsigned int crc32(const unsigned char *buffer, unsigned int len)
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{
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unsigned int crc;
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crc = 0;
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crc = crc ^ 0xffffffffL;
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while(len >= 8) {
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DO8(buffer);
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len -= 8;
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}
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if(len) do {
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DO1(buffer);
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} while(--len);
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return crc ^ 0xffffffffL;
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}
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@ -0,0 +1,554 @@
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/*
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* fastftdi.c - A minimal FTDI FT2232H interface for which supports bit-bang
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* mode, but focuses on very high-performance support for
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* synchronous FIFO mode. Requires libusb-1.0
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*
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* Copyright (C) 2009 Micah Elizabeth Scott
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include "fastftdi.h"
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#if defined _WIN32 || defined _WIN64
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#include <time.h>
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#include <sys/timeb.h>
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int gettimeofday (struct timeval *tp, void *tz)
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{
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struct _timeb timebuffer;
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_ftime (&timebuffer);
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tp->tv_sec = timebuffer.time;
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tp->tv_usec = timebuffer.millitm * 1000;
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return 0;
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}
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#endif
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typedef struct {
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FTDIStreamCallback *callback;
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void *userdata;
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int result;
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FTDIProgressInfo progress;
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} FTDIStreamState;
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static int
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DeviceInit(FTDIDevice *dev)
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{
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int err, interface;
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for (interface = 0; interface < 2; interface++) {
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if (libusb_kernel_driver_active(dev->handle, interface) == 1) {
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if ((err = libusb_detach_kernel_driver(dev->handle, interface))) {
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perror("Error detaching kernel driver");
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return err;
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}
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}
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}
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if ((err = libusb_set_configuration(dev->handle, 1))) {
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perror("Error setting configuration");
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return err;
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}
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for (interface = 0; interface < 2; interface++) {
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if ((err = libusb_claim_interface(dev->handle, interface))) {
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perror("Error claiming interface");
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return err;
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}
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}
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return 0;
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}
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int
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FTDIDevice_Open(FTDIDevice *dev)
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{
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int err;
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memset(dev, 0, sizeof *dev);
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if ((err = libusb_init(&dev->libusb))) {
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return err;
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}
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libusb_set_debug(dev->libusb, 0);
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dev->handle = libusb_open_device_with_vid_pid(dev->libusb,
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LITEUSB_VENDOR,
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LITEUSB_PRODUCT);
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if (!dev->handle) {
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dev->handle = libusb_open_device_with_vid_pid(dev->libusb,
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FTDI_VENDOR,
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FTDI_PRODUCT_FT2232H);
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}
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if (!dev->handle) {
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return LIBUSB_ERROR_NO_DEVICE;
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}
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return DeviceInit(dev);
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}
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void
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FTDIDevice_Close(FTDIDevice *dev)
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{
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libusb_close(dev->handle);
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libusb_exit(dev->libusb);
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}
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int
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FTDIDevice_Reset(FTDIDevice *dev)
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{
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int err;
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err = libusb_reset_device(dev->handle);
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if (err)
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return err;
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return DeviceInit(dev);
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}
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int
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FTDIDevice_SetMode(FTDIDevice *dev, FTDIInterface interface,
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FTDIBitmode mode, uint8_t pinDirections,
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int baudRate)
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{
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int err;
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err = libusb_control_transfer(dev->handle,
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LIBUSB_REQUEST_TYPE_VENDOR
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| LIBUSB_RECIPIENT_DEVICE
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| LIBUSB_ENDPOINT_OUT,
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FTDI_SET_BITMODE_REQUEST,
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pinDirections | (mode << 8),
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interface,
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NULL, 0,
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FTDI_COMMAND_TIMEOUT);
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if (err)
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return err;
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if (baudRate) {
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int divisor;
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if (mode == FTDI_BITMODE_BITBANG)
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baudRate <<= 2;
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divisor = 240000000 / baudRate;
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if (divisor < 1 || divisor > 0xFFFF) {
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return LIBUSB_ERROR_INVALID_PARAM;
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}
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err = libusb_control_transfer(dev->handle,
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LIBUSB_REQUEST_TYPE_VENDOR
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| LIBUSB_RECIPIENT_DEVICE
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| LIBUSB_ENDPOINT_OUT,
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FTDI_SET_BAUD_REQUEST,
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divisor,
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interface,
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NULL, 0,
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FTDI_COMMAND_TIMEOUT);
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if (err)
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return err;
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}
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return err;
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}
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/*
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* Internal callback for cleaning up async writes.
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*/
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static void
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WriteAsyncCallback(struct libusb_transfer *transfer)
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{
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free(transfer->buffer);
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libusb_free_transfer(transfer);
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}
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/*
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* Write to an FTDI interface, either synchronously or asynchronously.
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* Async writes have no completion callback, they finish 'eventually'.
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*/
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int
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FTDIDevice_Write(FTDIDevice *dev, FTDIInterface interface,
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uint8_t *data, size_t length, bool async)
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{
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int err;
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if (async) {
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struct libusb_transfer *transfer = libusb_alloc_transfer(0);
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if (!transfer) {
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return LIBUSB_ERROR_NO_MEM;
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}
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libusb_fill_bulk_transfer(transfer, dev->handle, FTDI_EP_OUT(interface),
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malloc(length), length, (libusb_transfer_cb_fn) WriteAsyncCallback, 0, 0);
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if (!transfer->buffer) {
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libusb_free_transfer(transfer);
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return LIBUSB_ERROR_NO_MEM;
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}
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memcpy(transfer->buffer, data, length);
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err = libusb_submit_transfer(transfer);
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} else {
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int transferred;
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err = libusb_bulk_transfer(dev->handle, FTDI_EP_OUT(interface),
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data, length, &transferred,
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FTDI_COMMAND_TIMEOUT);
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}
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if (err < 0)
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return err;
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else
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return 0;
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}
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int
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FTDIDevice_WriteByteSync(FTDIDevice *dev, FTDIInterface interface, uint8_t byte)
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{
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return FTDIDevice_Write(dev, interface, &byte, sizeof byte, false);
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}
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int
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FTDIDevice_ReadByteSync(FTDIDevice *dev, FTDIInterface interface, uint8_t *byte)
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{
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/*
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* This is a simplified synchronous read, intended for bit-banging mode.
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* Ignores the modem/buffer status bytes, returns just the data.
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*
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*/
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uint8_t packet[3];
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int transferred, err;
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err = libusb_bulk_transfer(dev->handle, FTDI_EP_IN(interface),
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packet, sizeof packet, &transferred,
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FTDI_COMMAND_TIMEOUT);
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if (err < 0) {
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return err;
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}
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if (transferred != sizeof packet) {
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return -1;
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}
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if (byte) {
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*byte = packet[sizeof packet - 1];
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}
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return 0;
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}
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/*
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* Internal callback for one transfer's worth of stream data.
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* Split it into packets and invoke the callbacks.
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*/
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static void
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ReadStreamCallback(struct libusb_transfer *transfer)
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{
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FTDIStreamState *state = transfer->user_data;
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if (state->result == 0) {
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if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
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int i;
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uint8_t *ptr = transfer->buffer;
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int length = transfer->actual_length;
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int numPackets = (length + FTDI_PACKET_SIZE - 1) >> FTDI_LOG_PACKET_SIZE;
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for (i = 0; i < numPackets; i++) {
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int payloadLen;
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int packetLen = length;
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if (packetLen > FTDI_PACKET_SIZE)
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packetLen = FTDI_PACKET_SIZE;
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|
||||
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);
|
||||
}
|
||||
|
|
@ -0,0 +1,135 @@
|
|||
/*
|
||||
* 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 */
|
||||
|
|
@ -0,0 +1,257 @@
|
|||
/*
|
||||
* 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;
|
||||
}
|
||||
|
|
@ -0,0 +1,104 @@
|
|||
/*
|
||||
* 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 */
|
||||
Loading…
Reference in New Issue