ftdi_stream.c File Reference

#include <stdlib.h>
#include <stdio.h>
#include <libusb.h>
#include "ftdi.h"

Go to the source code of this file.

Classes
struct	FTDIStreamState

Functions
int	ftdi_readstream (struct ftdi_context *ftdi, FTDIStreamCallback *callback, void *userdata, int packetsPerTransfer, int numTransfers)

Function Documentation

int ftdi_readstream	(	struct ftdi_context *	ftdi,
		FTDIStreamCallback *	callback,
		void *	userdata,
		int	packetsPerTransfer,
		int	numTransfers
	)

Streaming reading of data from the device

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.

Parameters

ftdi	pointer to ftdi_context
callback	to user supplied function for one block of data
userdata
packetsPerTransfer	number of packets per transfer
numTransfers	Number of transfers per callback

Definition at line 147 of file ftdi_stream.c.

References FTDIStreamState::activity, BITMODE_RESET, BITMODE_SYNCFF, FTDIStreamState::callback, FTDIProgressInfo::current, FTDIProgressInfo::currentRate, FTDIProgressInfo::first, ftdi_get_error_string(), ftdi_set_bitmode(), ftdi_usb_purge_buffers(), ftdi_context::max_packet_size, ftdi_context::out_ep, FTDIProgressInfo::prev, FTDIStreamState::progress, FTDIStreamState::result, size_and_time::time, size_and_time::totalBytes, FTDIProgressInfo::totalRate, FTDIProgressInfo::totalTime, ftdi_context::type, TYPE_2232H, TYPE_232H, ftdi_context::usb_ctx, ftdi_context::usb_dev, ftdi_context::usb_read_timeout, and FTDIStreamState::userdata.