LIRC patch instruction/how-to for USB Infrared Toy from Dangerous Prototypes

README.md

LIRC patch instruction/how-to for USB Infrared Toy from Dangerous Prototypes

This is a instruction to patch the usb infrared toy driver into lirc sources. Most of the work is done by Peter Kooiman

Requirements

• Debian based OS (only tested on rapbian)
• root privileges
• USB Infrared Toy

Pre-requisites

Add deb-src to your sources.list Install the packaging-dev package to get a decent set of packages to do Debian packaging. It includes the quilt package.

$ sudo apt-get install packaging-dev

Load lirc sources

$ apt-get source lirc

Depending on the current lirc version number, the folder name may be different

$ ls
lirc-0.9.0~pre1  lirc_0.9.0~pre1-1.debian.tar.bz2  lirc_0.9.0~pre1-1.dsc  lirc_0.9.0~pre1.orig.tar.bz2

Download patch

$ wget https://gist.githubusercontent.com/bullshit/918d74db9473355d7181/raw/568b75813d51c8aaa793a83f448a6184b0d4d5aa/USB-Infrared-Toy-driver.patch

Apply patch to lirc sources

Switch to the source folder

$ cd lirc-0.9.0~pre1

Now import the patch with quilt and apply it

$ quilt import ../USB-Infrared-Toy-driver.patch
$ quilt push
$ quilt refresh

There is the output of the quilt commands on my raspberry pi

root@pi:~/test/lirc-0.9.0~pre1# quilt import ../USB-Infrared-Toy-driver.patch
Importing patch ../USB-Infrared-Toy-driver.patch (stored as USB-Infrared-Toy-driver.patch)
root@pi:~/test/lirc-0.9.0~pre1# quilt push
Applying patch USB-Infrared-Toy-driver.patch
patching file configure
patching file configure.ac
patching file daemons/hw-types.c
patching file daemons/hw_usbirtoy.c
patching file setup.data
patching file setup.sh

Now at patch USB-Infrared-Toy-driver.patch
root@pi:~/test/lirc-0.9.0~pre1# quilt refresh
Warning: trailing whitespace in lines 6,179,269 of daemons/hw_usbirtoy.c
Warning: trailing whitespace in lines 201,414 of setup.data
Refreshed patch USB-Infrared-Toy-driver.patch

Build your lirc package with USB Infrared Toy support

$ debuild -us -uc

When the build proccess is finished you have all the lirc packages outside the source folder

$ ls ../
liblircclient0_0.9.0~pre1-1_armhf.deb     lirc_0.9.0~pre1-1_armhf.build    lirc_0.9.0~pre1-1.debian.tar.bz2  lirc-x_0.9.0~pre1-1_armhf.deb
liblircclient-dev_0.9.0~pre1-1_armhf.deb  lirc_0.9.0~pre1-1_armhf.changes  lirc_0.9.0~pre1-1.dsc             USB-Infrared-Toy-driver.patch
lirc-0.9.0~pre1                           lirc_0.9.0~pre1-1_armhf.deb      lirc_0.9.0~pre1.orig.tar.bz2

Install your lirc packages

$ sudo dpkg -i ../liblircclient0_0.9.0~pre1-1_armhf.deb
$ sudo dpkg -i ../lirc_0.9.0~pre1-1_armhf.deb

Finished

And know you can use lirc with USB Infrared Toy. To prevent automatic updates from apt you can hold your package

$ sudo apt-mark hold lirc

USB-Infrared-Toy-driver.patch

Description: USB Infrared Toy driver
Author: Oskar Holowaty <[email protected]>
Origin: other, http://sourceforge.net/p/lirc/mailman/message/28032156/
Last-Update: 2014-11-21
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
Index: lirc-0.9.0~pre1/configure
===================================================================
--- lirc-0.9.0~pre1.orig/configure	2010-10-26 19:39:24.000000000 +0200
+++ lirc-0.9.0~pre1/configure	2014-11-22 00:55:42.193077231 +0100
@@ -1666,7 +1666,7 @@
                           srm7500libusb, streamzap, tekram,
                           tekram_bt829, tira, tira_raw, ttusbir,
                           tuxbox, tvbox, udp, uirt2, uirt2_raw,
-                          usb_uirt_raw, usbx, wpc8769l
+                          usb_uirt_raw, usb_irtoy, usbx, wpc8769l
   --with-devdir=DIR       Install device files in DIR (/dev)
   --with-moduledir=DIR    kernel modules in DIR (/lib/modules/`uname -r`/misc)
   --with-major=value      specify the device major for the driver (61)
@@ -15474,6 +15474,7 @@
 	(uirt2) \
 	(uirt2_raw) \
 	(usb_uirt_raw) \
+	(usb_irtoy) \
 	(usbx) \
 	(udp)"
 
@@ -17786,6 +17787,9 @@
 	uirt2_raw|usb_uirt_raw)
 		hw_module="${hw_module} hw_uirt2_raw.o hw_uirt2_common.o serial.o receive.o transmit.o"
 		;;
+	usb_irtoy)
+		hw_module="${hw_module} hw_usbirtoy.o serial.o receive.o transmit.o"
+		;;
 	usbx)
 		hw_module="${hw_module} hw_usbx.o serial.o"
 		;;
@@ -18560,6 +18564,11 @@
   hw_module="hw_uirt2_raw.o hw_uirt2_common.o serial.o receive.o transmit.o"
   HW_DEFAULT="hw_usb_uirt_raw"
 fi
+if test "$driver" = "usb_irtoy"; then
+  lirc_driver="none"
+  hw_module="hw_usbirtoy.o serial.o receive.o transmit.o"
+  HW_DEFAULT="hw_usbirtoy"
+fi
 if test "$driver" = "usbx"; then
   lirc_driver="none"
   hw_module="hw_usbx.o serial.o"
Index: lirc-0.9.0~pre1/configure.ac
===================================================================
--- lirc-0.9.0~pre1.orig/configure.ac	2010-10-26 19:32:18.000000000 +0200
+++ lirc-0.9.0~pre1/configure.ac	2014-11-22 01:05:42.242819852 +0100
@@ -154,6 +154,7 @@
 	(uirt2) \
 	(uirt2_raw) \
 	(usb_uirt_raw) \
+	(usb_irtoy) \
 	(usbx) \
 	(udp)"
 
@@ -454,7 +455,7 @@
                           srm7500libusb, streamzap, tekram,
                           tekram_bt829, tira, tira_raw, ttusbir,
                           tuxbox, tvbox, udp, uirt2, uirt2_raw,
-                          usb_uirt_raw, usbx, wpc8769l],
+                          usb_uirt_raw, usb_irtoy, usbx, wpc8769l],
 driver=${withval},
 driver="unset"
 )
@@ -698,6 +699,9 @@
 	uirt2_raw|usb_uirt_raw)
 		hw_module="${hw_module} hw_uirt2_raw.o hw_uirt2_common.o serial.o receive.o transmit.o"
 		;;
+	usb_irtoy)
+		hw_module="${hw_module} hw_usbirtoy.o serial.o receive.o transmit.o"
+		;;
 	usbx)
 		hw_module="${hw_module} hw_usbx.o serial.o"
 		;;
@@ -1442,6 +1446,11 @@
   hw_module="hw_uirt2_raw.o hw_uirt2_common.o serial.o receive.o transmit.o"
   HW_DEFAULT="hw_usb_uirt_raw"
 fi
+if test "$driver" = "usb_irtoy"; then
+  lirc_driver="none"
+  hw_module="hw_usbirtoy.o serial.o receive.o transmit.o"
+  HW_DEFAULT="hw_usbirtoy"
+fi
 if test "$driver" = "usbx"; then
   lirc_driver="none"
   hw_module="hw_usbx.o serial.o"
Index: lirc-0.9.0~pre1/daemons/hw-types.c
===================================================================
--- lirc-0.9.0~pre1.orig/daemons/hw-types.c	2010-10-26 19:31:24.000000000 +0200
+++ lirc-0.9.0~pre1/daemons/hw-types.c	2014-11-22 00:56:29.747612207 +0100
@@ -58,6 +58,7 @@
 extern struct hardware hw_uirt2;
 extern struct hardware hw_uirt2_raw;
 extern struct hardware hw_usb_uirt_raw;
+extern struct hardware hw_usbirtoy;
 extern struct hardware hw_usbx;
 
 #ifndef HW_DEFAULT
@@ -172,6 +173,7 @@
 	&hw_uirt2,
 	&hw_uirt2_raw,
 	&hw_usb_uirt_raw,
+	&hw_usbirtoy,
 	&hw_usbx,
 #else
 	&HW_DEFAULT,
Index: lirc-0.9.0~pre1/daemons/hw_usbirtoy.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ lirc-0.9.0~pre1/daemons/hw_usbirtoy.c	2014-11-22 01:00:04.277080637 +0100
@@ -0,0 +1,434 @@
+/****************************************************************************
+ ** hw_usbirtoy.c **********************************************************
+ ****************************************************************************
+ *
+ * Routines for USB Infrared Toy receiver/transmitter in sampling mode
+ * 
+ * Copyright (C) 2011 Peter Kooiman <[email protected]>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+ #ifdef HAVE_CONFIG_H
+	#include <config.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <limits.h>
+#include <signal.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include "hardware.h"
+#include "serial.h"
+#include "ir_remote.h"
+#include "lircd.h"
+#include "receive.h"
+#include "transmit.h"
+#define IRTOY_MINFWVERSION 20
+#define IRTOY_UNIT 21.3333
+#define IRTOY_LONGSPACE 1000000
+const unsigned char IRTOY_COMMAND_TXSTART[] = {0x24, 0x25, 0x26, 0x03};
+#define IRTOY_COMMAND_RESET 0
+#define IRTOY_COMMAND_SMODE_ENTER 's'
+#define IRTOY_COMMAND_VERSION 'v'
+#define IRTOY_REPLY_XMITCOUNT 't'
+#define IRTOY_REPLY_XMITSUCCESS 'C'
+#define IRTOY_REPLY_VERSION 'V'
+#define IRTOY_REPLY_SAMPLEMODEPROTO 'S'
+#define IRTOY_LEN_XMITRES 4
+#define IRTOY_LEN_VERSION 4
+#define IRTOY_LEN_SAMPLEMODEPROTO 3
+#define IRTOY_TIMEOUT_READYFORDATA 1000000
+#define IRTOY_TIMEOUT_FLUSH 20000
+#define IRTOY_TIMEOUT_SMODE_ENTER 500000
+#define IRTOY_TIMEOUT_VERSION 500000
+struct tag_irtoy_t {
+	int hwVersion;
+	int swVersion;
+	int protoVersion;
+	int fd;
+	int awaitingNewSig;
+	int pulse;
+};
+typedef struct tag_irtoy_t irtoy_t;
+static irtoy_t *dev;
+unsigned char rawSB[WBUF_SIZE * 2 + 2];
+/* exported functions  */
+static int irtoy_init(void);
+static int irtoy_deinit(void);
+static int irtoy_send(struct ir_remote *remote, struct ir_ncode *code);
+static char *irtoy_rec(struct ir_remote *remotes);
+static int irtoy_decode(struct ir_remote *remote, ir_code * prep, ir_code * codep, ir_code * postp,
+						int *repeat_flagp, lirc_t * min_remaining_gapp, lirc_t * max_remaining_gapp);
+static lirc_t irtoy_readdata(lirc_t timeout);
+struct hardware hw_usbirtoy = {
+	#ifndef LIRC_IRTTY
+	"/dev/ttyACM0",
+	#else
+	LIRC_IRTTY,		/* default device */
+	#endif
+	-1,			/* fd */
+	LIRC_CAN_REC_MODE2 | LIRC_CAN_SEND_PULSE,	/* features */
+	LIRC_MODE_PULSE,	/* send_mode */
+	LIRC_MODE_MODE2,	/* rec_mode */
+	0,			/* code_length */
+	irtoy_init,		/* init_func */
+	irtoy_deinit,	/* deinit_func */
+	irtoy_send,		/* send_func */
+	irtoy_rec,		/* rec_func */
+	irtoy_decode,	/* decode_func */
+	NULL,			/* ioctl_func */
+	irtoy_readdata,	/* readdata */
+	"usb_irtoy"
+};
+static int irtoy_decode(struct ir_remote *remote, ir_code * prep, ir_code * codep, ir_code * postp,
+						int *repeat_flagp, lirc_t * min_remaining_gapp, lirc_t * max_remaining_gapp)
+{
+	int res;
+	LOGPRINTF(1, "irtoy_decode: enter");
+	res = receive_decode(remote, prep, codep, postp, repeat_flagp, min_remaining_gapp, max_remaining_gapp);
+	LOGPRINTF(1, "irtoy_decode: %d", res);
+	return res;
+}
+static ssize_t read_with_timeout(int fd, void *buf, size_t count, long to_usec)
+{
+	ssize_t rc;
+	size_t numread = 0;
+	struct timeval timeout;
+	fd_set fds;
+	timeout.tv_sec = 0;
+	timeout.tv_usec = to_usec;
+	rc = read(fd, (char *) buf, count);
+	if (rc > 0) {
+		numread += rc;
+	}
+	while ((rc == -1 && errno == EAGAIN) || (rc >= 0 && numread < count)) {
+		FD_ZERO(&fds);
+		FD_SET(fd, &fds);
+		rc = select(fd + 1, &fds, NULL, NULL, &timeout);
+		if (rc == 0) {
+			/* timeout */
+			break;
+		} else if (rc == -1) {
+			/* continue for EAGAIN case */
+			continue;
+		}
+		rc = read(fd, ((char *)buf) + numread, count - numread);
+		if (rc > 0) {
+			numread += rc;
+		}
+	}
+	return(numread == 0) ? -1 : numread;
+}
+static int irtoy_readflush(irtoy_t * dev, long timeout)
+{
+	int res;
+	char c;
+	while ((res = read_with_timeout(dev->fd, &c, 1, timeout)) == 1)
+		;
+	if (res != 0)
+		return -1;
+	else
+		return 0;
+	}
+static lirc_t irtoy_read(irtoy_t * dev, lirc_t timeout)
+{
+	lirc_t data;
+	int res;
+	unsigned char dur[2];
+	if (!waitfordata(timeout))
+		return 0;
+	// lircd expects a space as start of the next transmission, not just at the end of the last one
+	// irrecord however likes to see a space at the end of the signal
+	// We remember if we saw the 0xFFFF timeout from the usbtoy and send a long space both after last signal and at start of next signal
+	// From usb irtoy: <signal...><lastpulse> [usbtoy timeout duration] 0xFFFF [however long it takes before next signal] <firstpulse><signal..>
+	// We return: <signal><lastpulse> [usbtoy timeout duration] LONGSPACE [however long it takes before next signal] LONGSPACE <firstpulse><signal>
+	if (dev->awaitingNewSig) {
+		LOGPRINTF(1, "new signal after large space");
+		dev->pulse = 1;
+		dev->awaitingNewSig = 0;
+		return IRTOY_LONGSPACE;
+	}
+	res = read_with_timeout(dev->fd, dur, 2, 0);
+	if (res != 2) {
+		logprintf(LOG_ERR, "irtoy_read: could not get 2 bytes");
+		return 0;
+	}
+	LOGPRINTF(3, "read_raw %02x%02x", dur[0], dur[1]);
+	if (dur[0] == 0xff && dur[1] == 0xff) {
+		dev->awaitingNewSig = 1;
+		return IRTOY_LONGSPACE;
+	}
+	data = (lirc_t) (IRTOY_UNIT * (double) (256 * dur[0] + dur[1]));
+	LOGPRINTF(3, "read_raw %d", data); 
+	if (dev->pulse) {
+		data = data | PULSE_BIT;
+	}
+	dev->pulse = ! (dev->pulse);
+	return data;
+}
+static lirc_t irtoy_readdata(lirc_t timeout)
+{
+	lirc_t data = irtoy_read(dev, timeout);
+	if (data) {
+		LOGPRINTF(1, "irtoy_readdata %d %d", !!(data & PULSE_BIT), data & PULSE_MASK);
+	}
+	return(data);
+}
+static int irtoy_getversion(irtoy_t *dev)
+{
+	int res;
+	unsigned char buf[16];
+	int vNum;
+	irtoy_readflush(dev, IRTOY_TIMEOUT_FLUSH);
+	buf[0] = IRTOY_COMMAND_VERSION;
+	res = write(dev->fd, buf, 1);
+	if (res != 1) {
+		logprintf(LOG_ERR, "irtoy_getversion: couldn't write command");
+		return 0;
+	}
+	res = read_with_timeout(dev->fd, buf, IRTOY_LEN_VERSION, IRTOY_TIMEOUT_VERSION);
+	if (res != IRTOY_LEN_VERSION) {
+		logprintf(LOG_ERR, "irtoy_getversion: couldn't read version");
+		logprintf(LOG_ERR, "please make sure you are using firmware v20 or higher");
+		return 0;
+	}
+	buf[IRTOY_LEN_VERSION] = 0;
+	LOGPRINTF(1, "irtoy_getversion: Got version %s", buf);
+	if (buf[0] != IRTOY_REPLY_VERSION) {
+		logprintf(LOG_ERR, "irtoy_getversion: invalid response %02X", buf[0]);
+		logprintf(LOG_ERR, "please make sure you are using firmware v20 or higher");
+		return 0;
+	}
+	vNum = atoi(buf + 1);
+	dev->hwVersion = vNum / 100;
+	dev->swVersion = vNum % 100;
+	return 1;
+}
+static int irtoy_reset(irtoy_t *dev)
+{
+	int res;
+	unsigned char buf[16];
+	buf[0] = IRTOY_COMMAND_RESET;
+	res = write(dev->fd, buf, 1);
+	if (res != 1) {
+		logprintf(LOG_ERR, "irtoy_reset: couldn't write command");
+		return 0;
+	}
+	irtoy_readflush(dev, IRTOY_TIMEOUT_FLUSH);
+	return 1;
+}
+static int irtoy_enter_samplemode(irtoy_t *dev)
+{
+	int res;
+	unsigned char buf[16];
+	buf[0] = IRTOY_COMMAND_SMODE_ENTER;
+	res = write(dev->fd, buf, 1);
+	if (res != 1) {
+		logprintf(LOG_ERR, "irtoy_enter_samplemode: couldn't write command");
+		return 0;
+	}
+	res = read_with_timeout(dev->fd, buf, IRTOY_LEN_SAMPLEMODEPROTO, IRTOY_TIMEOUT_SMODE_ENTER);
+	if (res != IRTOY_LEN_SAMPLEMODEPROTO) {
+		logprintf(LOG_ERR, "irtoy_enter_samplemode: couldn't read command result");
+		return 0;
+	}
+	buf[IRTOY_LEN_SAMPLEMODEPROTO] = 0;
+	if (buf[0] != IRTOY_REPLY_SAMPLEMODEPROTO) {
+		logprintf(LOG_ERR, "irtoy_enter_samplemode: invalid response %02X", buf[0]);
+		return 0;
+	}
+	LOGPRINTF(1, "irtoy_reset: Got protocol %s", buf);
+	dev->protoVersion = atoi(buf + 1);
+	return 1;
+}
+static irtoy_t *irtoy_hw_init(int fd)
+{
+	irtoy_t *dev = (irtoy_t *) malloc(sizeof(irtoy_t));
+	if (dev == NULL) {
+		logprintf(LOG_ERR, "irtoy_init: out of memory");
+		return NULL;
+	}
+	memset(dev, 0, sizeof(irtoy_t));
+	dev->awaitingNewSig = 1; 
+	dev->fd = fd;
+	dev->pulse = 1;
+	irtoy_readflush(dev, IRTOY_TIMEOUT_FLUSH);
+	if (!irtoy_reset(dev) || !irtoy_getversion(dev) || !irtoy_enter_samplemode(dev)) {
+		free(dev);
+		dev = NULL;
+		return NULL;
+	}
+	return dev;
+}
+static int irtoy_init(void)
+{
+	if (!tty_create_lock(hw.device)) {
+		logprintf(LOG_ERR, "usb_irtoy: could not create lock files");
+		return(0);
+	}
+	if ((hw.fd = open(hw.device, O_RDWR | O_NONBLOCK | O_NOCTTY)) < 0) {
+		logprintf(LOG_ERR, "usb_irtoy: could not open %s", hw.device);
+		tty_delete_lock();
+		return(0);
+	}
+	if (!tty_reset(hw.fd)) {
+		logprintf(LOG_ERR, "usb_irtoy: could not reset tty");
+		close(hw.fd);
+		tty_delete_lock();
+		return(0);
+	}
+	if (!tty_setbaud(hw.fd, 115200)) {
+		logprintf(LOG_ERR, "usb_irtoy: could not set baud rate");
+		close(hw.fd);
+		tty_delete_lock();
+		return(0);
+	}
+	if (!tty_setcsize(hw.fd, 8)) {
+		logprintf(LOG_ERR, "usb_irtoy: could not set csize");
+		close(hw.fd);
+		tty_delete_lock();
+		return(0);
+	}
+	if (!tty_setrtscts(hw.fd, 1)) {
+		logprintf(LOG_ERR, "usb_irtoy: could not enable hardware flow");
+		close(hw.fd);
+		tty_delete_lock();
+		return(0);
+	}
+	if ((dev = irtoy_hw_init(hw.fd)) == NULL) {
+		logprintf(LOG_ERR, "usb_irtoy: No USB Irtoy device found at %s", hw.device);
+		close(hw.fd);
+		tty_delete_lock();
+		return(0);
+	}
+	LOGPRINTF(1, "Version hw %d, sw %d, protocol %d\n", dev->hwVersion, dev->swVersion, dev->protoVersion);
+	if (dev->swVersion < IRTOY_MINFWVERSION) {
+		logprintf(LOG_ERR, "usb_irtoy: Need firmware V%02d or higher, this firmware: %02d", IRTOY_MINFWVERSION, dev->swVersion);
+		free(dev);
+		return 0;
+	}
+	init_rec_buffer();
+	init_send_buffer();
+	return(1);
+}
+static int irtoy_deinit(void)
+{
+	// IMPORTANT do not remove this reset. it is vital to return the irtoy to IRMAN mode.
+	// If we leave the irtoy in sample mode while no-one has the tty open, the linux cdc_acm driver will fail on the next open.
+	// This is apparently due to data being sent while the tty is not open and fairly well known (google for "tty_port_close_start: tty->count = 1 port count = 0")
+	// IRMAN mode will wait until a signal is actually read before sending the next one, while sample mode will keep streaming (and under fluorescent light it WILL stream..)
+	// triggering the problem
+	irtoy_reset(dev);
+	free(dev);
+	dev = NULL;
+	close(hw.fd);
+	hw.fd = -1;
+	tty_delete_lock();
+	return 1;
+}
+static char *irtoy_rec(struct ir_remote *remotes)
+{
+	LOGPRINTF(1, "irtoy_raw_rec");
+	if (!clear_rec_buffer())
+		return(NULL);
+	return decode_all(remotes);
+}
+static int irtoy_send_double_buffered(unsigned char * signals, int length)
+{
+	int numToXmit = length;
+	int numThisTime;
+	int res;
+	unsigned char irToyBufLen;
+	unsigned char *txPtr;
+	unsigned char reply[16];
+	int irtoyXmit;
+	res = write(dev->fd, IRTOY_COMMAND_TXSTART, sizeof(IRTOY_COMMAND_TXSTART));
+	if (res != sizeof(IRTOY_COMMAND_TXSTART)) {
+		logprintf(LOG_ERR, "irtoy_send: couldn't write command");
+		return 0;
+	}
+	res = read_with_timeout(dev->fd, &irToyBufLen, 1, IRTOY_TIMEOUT_READYFORDATA);
+	if (res != 1) {
+		logprintf(LOG_ERR, "irtoy_send: couldn't read command result");
+		return -1;
+	}
+	LOGPRINTF(1, "irtoy ready for %d bytes\n", irToyBufLen);
+	txPtr = signals;
+	while (numToXmit) {
+		numThisTime = (numToXmit < irToyBufLen) ? numToXmit : irToyBufLen;
+		res = write(dev->fd, txPtr, numThisTime);
+		if (res != numThisTime) {
+			logprintf(LOG_ERR, "irtoy_send: couldn't write command");
+			return 0;
+		}
+		txPtr += numThisTime;
+		numToXmit -= numThisTime;
+		res = read_with_timeout(dev->fd, &irToyBufLen, 1, IRTOY_TIMEOUT_READYFORDATA);
+		if (res != 1) {
+			logprintf(LOG_ERR, "irtoy_send: couldn't read command result");
+			return -1;
+		}
+		LOGPRINTF(1, "irtoy ready for %d bytes\n", irToyBufLen);
+	}
+	res = read_with_timeout(dev->fd, reply, IRTOY_LEN_XMITRES, IRTOY_TIMEOUT_READYFORDATA);
+	if (res != IRTOY_LEN_XMITRES) {
+		logprintf(LOG_ERR, "irtoy_send: couldn't read command result");
+		return -1;
+	}
+	LOGPRINTF(1, "%c %02X %02X %c\n", reply[0], reply[1], reply[2], reply[3]);
+	if (reply[0] != IRTOY_REPLY_XMITCOUNT) {
+		logprintf(LOG_ERR, "irtoy_send: invalid byte count indicator received: %02X", reply[0]);
+		return 0;
+	}
+	irtoyXmit = (reply[1] << 8) | reply[2];
+	if (length != irtoyXmit) {
+		logprintf(LOG_ERR, "irtoy_send: incorrect byte count received: %d expected: %d", irtoyXmit, length);
+		return 0;
+	}
+	if (reply[3] != IRTOY_REPLY_XMITSUCCESS) {
+		logprintf(LOG_ERR, "irtoy_send: received error status %02X", reply[3]);
+		return 0;
+	}
+	return 1;
+}
+static int irtoy_send(struct ir_remote *remote, struct ir_ncode *code)
+{
+	int length;
+	lirc_t *signals;
+	int res = 0;
+	int numToXmit;
+	int i;
+	lirc_t val;
+	if (!init_send(remote, code)) {
+		return 0;
+	}
+	length = send_buffer.wptr;
+	signals = send_buffer.data;
+	for (i = 0; i < length; i++) {
+		val = (lirc_t)(((double) signals[i]) / IRTOY_UNIT);
+		rawSB[2*i] = val >> 8;
+		rawSB[2*i + 1] = val & 0xFF;
+	}
+	rawSB[2 * length] = 0xFF;
+	rawSB[2 * length + 1] = 0xFF;
+	numToXmit = 2 * length + 2;
+	return irtoy_send_double_buffered(rawSB, numToXmit);
+}
+
Index: lirc-0.9.0~pre1/setup.data
===================================================================
--- lirc-0.9.0~pre1.orig/setup.data	2010-10-26 19:31:24.000000000 +0200
+++ lirc-0.9.0~pre1/setup.data	2014-11-22 01:00:28.244352363 +0100
@@ -123,6 +123,7 @@
 	awlibusb: "Awox RF/IR Remote (userspace)"
 	sb0540: "Creative USB IR Receiver (SB0540)"
 	commandir: "CommandIR Multi-IR Transceiver (userspace)"
+	usb_irtoy: "Dangerous Prototypes USB Infrared Toy"
 	dfclibusb: "DFC USB InfraRed Remote Control (userspace)"
 	sasem: "Dign HV5 HTPC IR/VFD Module"
 	dvico: "DViCO USB Remote"
@@ -153,6 +154,7 @@
 	mplay: "VLSystem MPlay Mini"
 	mceusb: "Windows Media Center Transceivers/Remotes (all)"
 
+
 param_type: \
 	act200l \
 	act220l \
@@ -196,6 +198,9 @@
 	usbx
 	ttyUSB:
 
+param_type: usb_irtoy 
+	ttyACM:
+
 param_type: \
 	adaptec \
 	alsa_usb \
@@ -406,6 +411,10 @@
 	usbx
 	ttyUSB1:
 
+default_param: usb_irtoy 
+	ttyACM1:
+
+
 remote: \
 	hauppauge \
 	hauppauge_dvb \
@@ -445,6 +454,7 @@
 	ttusbir \
 	uirt2_raw \
 	udp \
+	usb_irtoy \
 	usb_uirt_raw \
 	wpc8769l
 	any:
Index: lirc-0.9.0~pre1/setup.sh
===================================================================
--- lirc-0.9.0~pre1.orig/setup.sh	2010-10-26 19:32:18.000000000 +0200
+++ lirc-0.9.0~pre1/setup.sh	2014-11-22 01:00:28.252352120 +0100
@@ -65,6 +65,10 @@
     elif test "$DRIVER_PARAMETER" = "ttyUSB2"; then COM2="on"; IRTTY="/dev/ttyUSB1"; LIRC_PORT="none"; LIRC_IRQ="none"
     elif test "$DRIVER_PARAMETER" = "ttyUSB3"; then COM3="on"; IRTTY="/dev/ttyUSB2"; LIRC_PORT="none"; LIRC_IRQ="none"
     elif test "$DRIVER_PARAMETER" = "ttyUSB4"; then COM4="on"; IRTTY="/dev/ttyUSB3"; LIRC_PORT="none"; LIRC_IRQ="none"
+    elif test "$DRIVER_PARAMETER" = "ttyACM1"; then COM1="on"; IRTTY="/dev/ttyACM0"; LIRC_PORT="none"; LIRC_IRQ="none"
+    elif test "$DRIVER_PARAMETER" = "ttyACM2"; then COM2="on"; IRTTY="/dev/ttyACM1"; LIRC_PORT="none"; LIRC_IRQ="none"
+    elif test "$DRIVER_PARAMETER" = "ttyACM3"; then COM3="on"; IRTTY="/dev/ttyACM2"; LIRC_PORT="none"; LIRC_IRQ="none"
+    elif test "$DRIVER_PARAMETER" = "ttyACM4"; then COM4="on"; IRTTY="/dev/ttyACM3"; LIRC_PORT="none"; LIRC_IRQ="none"
     elif test "$DRIVER_PARAMETER" = "com1"; then COM1="on"; LIRC_PORT=$COM1_PORT; LIRC_IRQ=$COM1_IRQ
     elif test "$DRIVER_PARAMETER" = "com2"; then COM2="on"; LIRC_PORT=$COM2_PORT; LIRC_IRQ=$COM2_IRQ
     elif test "$DRIVER_PARAMETER" = "com3"; then COM3="on"; LIRC_PORT=$COM3_PORT; LIRC_IRQ=$COM3_IRQ
@@ -207,6 +211,30 @@
 	else
 	    return 1;
         fi
+	elif test "$DRIVER_PARAM_TYPE" = "ttyACM"; then
+	{
+        dialog --clear --backtitle "$BACKTITLE" \
+               --title "Select tty to use" \
+               --radiolist "$SET_TTY_TEXT" 13 74 6 \
+                 1 "/dev/ttyACM0" $COM1 \
+                 2 "/dev/ttyACM1" $COM2 \
+                 3 "/dev/ttyACM2" $COM3 \
+                 4 "/dev/ttyACM3" $COM4 \
+               2> $TEMP
+	}
+        if test "$?" = "0"; then
+            {
+	    set `cat $TEMP`
+            if   test "$1" = "1"; then DRIVER_PARAMETER="ttyACM1"
+            elif test "$1" = "2"; then DRIVER_PARAMETER="ttyACM2"
+            elif test "$1" = "3"; then DRIVER_PARAMETER="ttyACM3"
+            elif test "$1" = "4"; then DRIVER_PARAMETER="ttyACM4"
+            fi
+            GetSelectedDriver
+            }
+	else
+	    return 1;
+        fi
     fi
     return 0;
     }
@@ -347,7 +375,7 @@
 	else echo "--without-timer \\" >>$START;
 	fi
         }
-    elif test "$DRIVER_PARAM_TYPE" = "tty" -o "$DRIVER_PARAM_TYPE" = "ttyUSB" -o "$LIRC_DRIVER" = "bte"; then
+    elif test "$DRIVER_PARAM_TYPE" = "tty" -o "$DRIVER_PARAM_TYPE" = "ttyUSB" -o "$DRIVER_PARAM_TYPE" = "ttyACM" -o "$LIRC_DRIVER" = "bte"; then
         {
 	echo "--with-tty=$IRTTY \\" >>$START
 	}

Hi! Thanks for the how-to
It didn't work for me at first on my Raspberry pi 3 with Raspbian jessie
I got this error on almost every IR send:

irtoy_getversion: couldn't read version
please make sure you are using firmware v20 or higher

And then lirc crashes.

Then I raised the timeouts on the patch to:
+#define IRTOY_TIMEOUT_READYFORDATA 2000000
+#define IRTOY_TIMEOUT_FLUSH 20000
+#define IRTOY_TIMEOUT_SMODE_ENTER 1000000
+#define IRTOY_TIMEOUT_VERSION 1500000

Now it´s working beautifully :)

While working with recent lirc 0.9.4d or even one built on master, I still had issues with USB IR-DROID device (based on IR Toys) failing in Raspberry Pi 3, but it seems @andrec0 suggestion totally helped. After rebuilding with increasing timeouts and rebuilding lirc from sources the connection to usb device is stable and doesn't fall after sending IR signals.