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https://github.com/enjoy-digital/litex.git
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da0fe2ecfb
small modifications to fastftdi.c are also done to select our interface (A or B) and mode (synchronous, asynchronous)
133 lines
4.4 KiB
C
133 lines
4.4 KiB
C
/*
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* fastftdi.h - A minimal FTDI FT232H interface for Linux which supports
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* bit-bang mode, but focuses on very high-performance support
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* for synchronous FIFO mode.
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*
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* Copyright (C) 2009 Micah Elizabeth Scott
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* Copyright (C) 2015 Florent Kermarrec
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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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#ifndef __FASTFTDI_H
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#define __FASTFTDI_H
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#include <libusb.h>
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#include <stdint.h>
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#include <stdbool.h>
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typedef enum {
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FTDI_BITMODE_RESET = 0,
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FTDI_BITMODE_BITBANG = 1 << 0,
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FTDI_BITMODE_MPSSE = 1 << 1,
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FTDI_BITMODE_SYNC_BITBANG = 1 << 2,
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FTDI_BITMODE_MCU = 1 << 3,
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FTDI_BITMODE_OPTO = 1 << 4,
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FTDI_BITMODE_CBUS = 1 << 5,
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FTDI_BITMODE_SYNC_FIFO = 1 << 6,
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} FTDIBitmode;
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typedef enum {
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FTDI_MPSSE_SETLOW = 0x80,
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FTDI_MPSSE_SETHIGH = 0x82,
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FTDI_MPSSE_GETLOW = 0x81,
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FTDI_MPSSE_GETHIGH = 0x83,
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FTDI_MPSSE_SETDIVISOR = 0x86,
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} FTDIMPSSEOpcode;
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typedef enum {
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FTDI_INTERFACE_A = 1,
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FTDI_INTERFACE_B = 2,
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} FTDIInterface;
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typedef struct {
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libusb_context *libusb;
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libusb_device_handle *handle;
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} FTDIDevice;
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typedef struct {
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struct {
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uint64_t totalBytes;
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struct timeval time;
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} first, prev, current;
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double totalTime;
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double totalRate;
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double currentRate;
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} FTDIProgressInfo;
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/*
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* USB Constants
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*/
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#define FTDI_VENDOR 0x0403
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#define FTDI_PRODUCT_FT2232H 0x6010
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#define FTDI_COMMAND_TIMEOUT 1000
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#define FTDI_SET_BAUD_REQUEST 0x03
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#define FTDI_SET_BITMODE_REQUEST 0x0B
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#define FTDI_EP_IN(i) (0x81 + (i-1)*2)
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#define FTDI_EP_OUT(i) (0x02 + (i-1)*2)
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#define FTDI_PACKET_SIZE 512 // Specific to FT2232H
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#define FTDI_LOG_PACKET_SIZE 9 // 512 == 1 << 9
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#define FTDI_HEADER_SIZE 2
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typedef int (FTDIStreamCallback)(uint8_t *buffer, int length,
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FTDIProgressInfo *progress, void *userdata);
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/*
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* Public Functions
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*/
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int FTDIDevice_Open(FTDIDevice *dev, FTDIInterface interface);
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void FTDIDevice_Close(FTDIDevice *dev);
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int FTDIDevice_Reset(FTDIDevice *dev, FTDIInterface interface);
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int 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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int FTDIDevice_Write(FTDIDevice *dev, FTDIInterface interface,
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uint8_t *data, size_t length, bool async);
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int FTDIDevice_WriteByteSync(FTDIDevice *dev, FTDIInterface interface, uint8_t byte);
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int FTDIDevice_ReadByteSync(FTDIDevice *dev, FTDIInterface interface, uint8_t *byte);
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int FTDIDevice_ReadStream(FTDIDevice *dev, FTDIInterface interface,
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FTDIStreamCallback *callback, void *userdata,
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int packetsPerTransfer, int numTransfers);
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int FTDIDevice_MPSSE_Enable(FTDIDevice *dev, FTDIInterface interface);
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int FTDIDevice_MPSSE_SetDivisor(FTDIDevice *dev, FTDIInterface interface,
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uint8_t ValueL, uint8_t ValueH);
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int FTDIDevice_MPSSE_SetLowByte(FTDIDevice *dev, FTDIInterface interface,
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uint8_t data, uint8_t dir);
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int FTDIDevice_MPSSE_SetHighByte(FTDIDevice *dev, FTDIInterface interface,
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uint8_t data, uint8_t dir);
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int FTDIDevice_MPSSE_GetLowByte(FTDIDevice *dev, FTDIInterface interface, uint8_t *byte);
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int FTDIDevice_MPSSE_GetHighByte(FTDIDevice *dev, FTDIInterface interface, uint8_t *byte);
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#endif /* __FASTFTDI_H */
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