/***************************************************************************
- ftdi.cpp - C++ wraper for libftdi
+ ftdi.cpp - C++ wrapper for libftdi
-------------------
begin : Mon Oct 13 2008
- copyright : (C) 2008-2013 by Marek Vavruša / libftdi developers
+ copyright : (C) 2008-2020 by Marek Vavruša / libftdi developers
email : opensource@intra2net.com and marek@vavrusa.com
***************************************************************************/
/*
-Copyright (C) 2008-2013 by Marek Vavruša / libftdi developers
+Copyright (C) 2008-2017 by Marek Vavruša / libftdi developers
The software in this package is distributed under the GNU General
Public License version 2 (with a special exception described below).
on this file might be covered by the GNU General Public License.
*/
#include <libusb.h>
+#define _FTDI_DISABLE_DEPRECATED
#include "ftdi.hpp"
#include "ftdi_i.h"
#include "ftdi.h"
if (ret < 0)
return ret;
- return get_strings_and_reopen();
+ return get_strings_and_reopen(false,false,false);
}
int Context::open(int vendor, int product, const std::string& description, const std::string& serial, unsigned int index)
if (ret < 0)
return ret;
- return get_strings_and_reopen();
+ return get_strings_and_reopen(false,!description.empty(),!serial.empty());
}
int Context::open(const std::string& description)
if (ret < 0)
return ret;
- return get_strings_and_reopen();
+ return get_strings_and_reopen(false,true,false);
}
int Context::open(struct libusb_device *dev)
int Context::flush(int mask)
{
- int ret = 1;
+ int ret;
+
+ switch (mask & (Input | Output)) {
+ case Input:
+ ret = ftdi_usb_purge_rx_buffer(d->ftdi);
+ break;
- if (mask & Input)
- ret &= ftdi_usb_purge_rx_buffer(d->ftdi);
- if (mask & Output)
- ret &= ftdi_usb_purge_tx_buffer(d->ftdi);
+ case Output:
+ ret = ftdi_usb_purge_tx_buffer(d->ftdi);
+ break;
+
+ case Input | Output:
+ ret = ftdi_usb_purge_buffers(d->ftdi);
+ break;
+
+ default:
+ // Emulate behavior of previous version.
+ ret = 1;
+ break;
+ }
+
+ return ret;
+}
+
+int Context::tcflush(int mask)
+{
+ int ret;
+
+ switch (mask & (Input | Output)) {
+ case Input:
+ ret = ftdi_tciflush(d->ftdi);
+ break;
+
+ case Output:
+ ret = ftdi_tcoflush(d->ftdi);
+ break;
+
+ case Input | Output:
+ ret = ftdi_tcioflush(d->ftdi);
+ break;
+
+ default:
+ // Emulate behavior of previous version.
+ ret = 1;
+ break;
+ }
return ret;
}
return chunk;
}
-int Context::write(unsigned char *buf, int size)
+int Context::write(const unsigned char *buf, int size)
{
return ftdi_write_data(d->ftdi, buf, size);
}
return ftdi_read_pins(d->ftdi, pins);
}
-char* Context::error_string()
+const char* Context::error_string()
{
return ftdi_get_error_string(d->ftdi);
}
-int Context::get_strings()
+int Context::get_strings(bool vendor, bool description, bool serial)
{
// Prepare buffers
- char vendor[512], desc[512], serial[512];
+ char ivendor[512], idesc[512], iserial[512];
- int ret = ftdi_usb_get_strings(d->ftdi, d->dev, vendor, 512, desc, 512, serial, 512);
+ int ret = ftdi_usb_get_strings(d->ftdi, d->dev, vendor?ivendor:NULL, 512, description?idesc:NULL, 512, serial?iserial:NULL, 512);
if (ret < 0)
return -1;
- d->vendor = vendor;
- d->description = desc;
- d->serial = serial;
+ d->vendor = ivendor;
+ d->description = idesc;
+ d->serial = iserial;
return 1;
}
-int Context::get_strings_and_reopen()
+int Context::get_strings_and_reopen(bool vendor, bool description, bool serial)
{
- if ( d->dev == 0 )
- {
- d->dev = libusb_get_device(d->ftdi->usb_dev);
- }
+ int ret = 0;
- // Get device strings (closes device)
- int ret=get_strings();
- if (ret < 0)
+ if(vendor || description || serial)
{
- d->open = 0;
- return ret;
- }
+ if (d->dev == 0)
+ {
+ d->dev = libusb_get_device(d->ftdi->usb_dev);
+ }
+
+ // Get device strings (closes device)
+ ret=get_strings(vendor, description, serial);
+ if (ret < 0)
+ {
+ d->open = 0;
+ return ret;
+ }
- // Reattach device
- ret = ftdi_usb_open_dev(d->ftdi, d->dev);
- d->open = (ret >= 0);
+ // Reattach device
+ ret = ftdi_usb_open_dev(d->ftdi, d->dev);
+ d->open = (ret >= 0);
+ }
return ret;
}
*/
const std::string& Context::vendor()
{
+ if(d->vendor.empty())
+ get_strings_and_reopen(true,false,false);
return d->vendor;
}
*/
const std::string& Context::description()
{
+ if(d->description.empty())
+ get_strings_and_reopen(false,true,false);
return d->description;
}
*/
const std::string& Context::serial()
{
+ if(d->serial.empty())
+ get_strings_and_reopen(false,false,true);
return d->serial;
}