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150 | -- Copyright (C)2021-2023, Philip Munts dba Munts Technologies.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are met:
--
-- * Redistributions of source code must retain the above copyright notice,
-- this list of conditions and the following disclaimer.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-- POSSIBILITY OF SUCH DAMAGE.
PRIVATE WITH Interfaces.C.Strings;
PRIVATE WITH System;
PACKAGE FTDI IS
Error : EXCEPTION;
TYPE Byte IS MOD 256;
TYPE Data IS ARRAY (Natural RANGE <>) OF Byte;
TYPE DeviceBaseClass IS TAGGED PRIVATE;
TYPE Device IS ACCESS ALL DeviceBaseClass'Class;
-- Query FTDI library (libftdi1) version
FUNCTION LibraryVersion RETURN String;
-- FTDI Device object constructor
FUNCTION Create
(Vendor : Integer;
Product : Integer) RETURN Device;
-- Read data from a FTDI device
PROCEDURE Read
(Self : IN OUT DeviceBaseClass;
inbuf : OUT Data;
len : Positive);
-- Write data to a FTDI device
PROCEDURE Write
(Self : IN OUT DeviceBaseClass;
outbuf : Data;
len : Positive);
-- Get FTDI device chip ID as hexadecimal string
FUNCTION ChipID(Self : IN OUT DeviceBaseClass) RETURN String;
-- Dump a data buffer in hexadecimal format
PROCEDURE Dump(src : Data);
PRIVATE
TYPE Context IS NEW System.Address;
NullContext : CONSTANT Context := Context(System.Null_Address);
TYPE DeviceBaseClass IS TAGGED RECORD
ctx : Context := NullContext;
END RECORD;
-- Fetch last error message string
FUNCTION ErrorString(ctx : Context) RETURN String;
-- Minimal thin binding to libftdi1.so follows
PRAGMA Link_With("-lftdi1");
TYPE ftdi_version_info IS RECORD
major : Interfaces.C.int;
minor : Interfaces.C.int;
micro : Interfaces.C.int;
version_str : Interfaces.C.Strings.chars_ptr;
snatshot_str : Interfaces.C.Strings.chars_ptr;
END RECORD WITH Convention => C;
TYPE ftdi_interface IS
(INTERFACE_ANY,
INTERFACE_A,
INTERFACE_B,
INTERFACE_C,
INTERFACE_D) WITH Convention => C;
FUNCTION ftdi_get_library_version RETURN ftdi_version_info
WITH Import => True, Convention => C;
FUNCTION ftdi_new RETURN Context
WITH Import => True, Convention => C;
PROCEDURE ftdi_free(ctx : Context)
WITH Import => True, Convention => C;
FUNCTION ftdi_get_error_string(ctx : Context) RETURN Interfaces.C.Strings.chars_ptr
WITH Import => True, Convention => C;
FUNCTION ftdi_usb_open
(ctx : Context;
vendor : Interfaces.C.int;
product : Interfaces.C.int) RETURN Interfaces.C.int
WITH Import => True, Convention => C;
FUNCTION ftdi_usb_close(ctx : Context) RETURN Interfaces.C.int
WITH Import => True, Convention => C;
FUNCTION ftdi_usb_reset(ctx : Context) RETURN Interfaces.C.int
WITH Import => True, Convention => C;
FUNCTION ftdi_set_interface
(ctx : Context;
iface : ftdi_interface) RETURN Interfaces.C.int
WITH Import => True, Convention => C;
FUNCTION ftdi_set_bitmode
(ctx : Context;
bitmask : Interfaces.C.unsigned_char;
mode : Interfaces.C.unsigned_char) RETURN Interfaces.C.int
WITH Import => True, Convention => C;
FUNCTION ftdi_read_chipid
(ctx : Context;
chipid : OUT Interfaces.C.unsigned) RETURN Interfaces.C.int
WITH Import => True, Convention => C;
FUNCTION ftdi_read_data
(ctx : Context;
buf : System.Address;
size : Interfaces.C.int) RETURN Interfaces.C.int
WITH Import => True, Convention => C;
FUNCTION ftdi_write_data
(ctx : Context;
buf : System.Address;
size : Interfaces.C.int) RETURN Interfaces.C.int
WITH Import => True, Convention => C;
END FTDI;
|