2 * This file is part of the libsigrok project.
4 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2010-2012 Uwe Hermann <uwe@hermann-uwe.de>
6 * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
7 * Copyright (C) 2014 Uffe Jakobsen <uffe@uffe.org>
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include <glib/gstdio.h>
28 #ifdef HAVE_LIBSERIALPORT
29 #include <libserialport.h>
31 #include <libsigrok/libsigrok.h>
32 #include "libsigrok-internal.h"
34 #include <windows.h> /* for HANDLE */
38 #define LOG_PREFIX "serial"
44 * Serial port handling.
48 * @defgroup grp_serial Serial port handling
50 * Serial port handling functions.
55 #ifdef HAVE_SERIAL_COMM
57 /* See if a (assumed opened) serial port is of any supported type. */
58 static int dev_is_supported(struct sr_serial_dev_inst *serial)
62 if (!serial->lib_funcs)
69 * Open the specified serial port.
71 * @param serial Previously initialized serial port structure.
72 * @param[in] flags Flags to use when opening the serial port. Possible flags
73 * include SERIAL_RDWR, SERIAL_RDONLY.
75 * If the serial structure contains a serialcomm string, it will be
76 * passed to serial_set_paramstr() after the port is opened.
78 * @retval SR_OK Success.
79 * @retval SR_ERR Failure.
83 SR_PRIV int serial_open(struct sr_serial_dev_inst *serial, int flags)
88 sr_dbg("Invalid serial port.");
92 sr_spew("Opening serial port '%s' (flags %d).", serial->port, flags);
94 /* Default to the libserialport transport layer. */
95 serial->lib_funcs = ser_lib_funcs_libsp;
96 if (!serial->lib_funcs)
100 * Note that use of the 'rcv_buffer' is optional, and the buffer's
101 * size heavily depends on the specific transport. That's why the
102 * buffer's content gets accessed and the buffer is released here in
103 * common code, but the buffer gets allocated in libraries' open()
108 * Run the transport's open routine. Setup the bitrate and the
111 if (!serial->lib_funcs->open)
113 ret = serial->lib_funcs->open(serial, flags);
117 if (serial->serialcomm)
118 return serial_set_paramstr(serial, serial->serialcomm);
124 * Close the specified serial port.
126 * @param serial Previously initialized serial port structure.
128 * @retval SR_OK Success.
129 * @retval SR_ERR Failure.
133 SR_PRIV int serial_close(struct sr_serial_dev_inst *serial)
138 sr_dbg("Invalid serial port.");
142 sr_spew("Closing serial port %s.", serial->port);
144 if (!serial->lib_funcs || !serial->lib_funcs->close)
147 rc = serial->lib_funcs->close(serial);
148 if (rc == SR_OK && serial->rcv_buffer) {
149 g_string_free(serial->rcv_buffer, TRUE);
150 serial->rcv_buffer = NULL;
157 * Flush serial port buffers. Empty buffers, discard pending RX and TX data.
159 * @param serial Previously initialized serial port structure.
161 * @retval SR_OK Success.
162 * @retval SR_ERR Failure.
166 SR_PRIV int serial_flush(struct sr_serial_dev_inst *serial)
169 sr_dbg("Invalid serial port.");
173 sr_spew("Flushing serial port %s.", serial->port);
175 sr_ser_discard_queued_data(serial);
177 if (!serial->lib_funcs || !serial->lib_funcs->flush)
180 return serial->lib_funcs->flush(serial);
184 * Drain serial port buffers. Wait for pending TX data to be sent.
186 * @param serial Previously initialized serial port structure.
188 * @retval SR_OK Success.
189 * @retval SR_ERR Failure.
193 SR_PRIV int serial_drain(struct sr_serial_dev_inst *serial)
196 sr_dbg("Invalid serial port.");
200 sr_spew("Draining serial port %s.", serial->port);
202 if (!serial->lib_funcs || !serial->lib_funcs->drain)
205 return serial->lib_funcs->drain(serial);
209 * Provide an internal RX data buffer for the serial port. This is not
210 * supposed to be used directly by applications. Instead optional and
211 * alternative transports for serial communication can use this buffer
212 * if their progress is driven from background activity, and is not
213 * (directly) driven by external API calls.
215 * BEWARE! This implementation assumes that data which gets communicated
216 * via UART can get stored in a GString (which is a char array). Since
217 * the API hides this detail, we can address this issue later when needed.
218 * Callers use the API which communicates bytes.
222 * Discard previously queued RX data. Internal to the serial subsystem,
223 * coordination between common and transport specific support code.
225 * @param[in] serial Previously opened serial port instance.
229 SR_PRIV void sr_ser_discard_queued_data(struct sr_serial_dev_inst *serial)
233 if (!serial->rcv_buffer)
236 g_string_truncate(serial->rcv_buffer, 0);
240 * Get amount of queued RX data. Internal to the serial subsystem,
241 * coordination between common and transport specific support code.
243 * @param[in] serial Previously opened serial port instance.
247 SR_PRIV size_t sr_ser_has_queued_data(struct sr_serial_dev_inst *serial)
251 if (!serial->rcv_buffer)
254 return serial->rcv_buffer->len;
258 * Queue received data. Internal to the serial subsystem, coordination
259 * between common and transport specific support code.
261 * @param[in] serial Previously opened serial port instance.
262 * @param[in] data Pointer to data bytes to queue.
263 * @param[in] len Number of data bytes to queue.
267 SR_PRIV void sr_ser_queue_rx_data(struct sr_serial_dev_inst *serial,
268 const uint8_t *data, size_t len)
275 if (serial->rcv_buffer)
276 g_string_append_len(serial->rcv_buffer, (const gchar *)data, len);
280 * Retrieve previously queued RX data. Internal to the serial subsystem,
281 * coordination between common and transport specific support code.
283 * @param[in] serial Previously opened serial port instance.
284 * @param[out] data Pointer to store retrieved data bytes into.
285 * @param[in] len Number of data bytes to retrieve.
289 SR_PRIV size_t sr_ser_unqueue_rx_data(struct sr_serial_dev_inst *serial,
290 uint8_t *data, size_t len)
300 qlen = sr_ser_has_queued_data(serial);
304 buf = serial->rcv_buffer;
308 memcpy(data, buf->str, len);
309 g_string_erase(buf, 0, len);
316 * Check for available receive data.
318 * @param[in] serial Previously opened serial port instance.
320 * @returns The number of (known) available RX data bytes.
322 * Returns 0 if no receive data is available, or if the amount of
323 * available receive data cannot get determined.
325 SR_PRIV size_t serial_has_receive_data(struct sr_serial_dev_inst *serial)
327 size_t lib_count, buf_count;
333 if (serial->lib_funcs && serial->lib_funcs->get_rx_avail)
334 lib_count = serial->lib_funcs->get_rx_avail(serial);
336 buf_count = sr_ser_has_queued_data(serial);
338 return lib_count + buf_count;
341 static int _serial_write(struct sr_serial_dev_inst *serial,
342 const void *buf, size_t count,
343 int nonblocking, unsigned int timeout_ms)
348 sr_dbg("Invalid serial port.");
352 if (!serial->lib_funcs || !serial->lib_funcs->write)
354 ret = serial->lib_funcs->write(serial, buf, count,
355 nonblocking, timeout_ms);
356 sr_spew("Wrote %zd/%zu bytes.", ret, count);
362 * Write a number of bytes to the specified serial port, blocking until finished.
364 * @param serial Previously initialized serial port structure.
365 * @param[in] buf Buffer containing the bytes to write.
366 * @param[in] count Number of bytes to write.
367 * @param[in] timeout_ms Timeout in ms, or 0 for no timeout.
369 * @retval SR_ERR_ARG Invalid argument.
370 * @retval SR_ERR Other error.
371 * @retval other The number of bytes written. If this is less than the number
372 * specified in the call, the timeout was reached.
376 SR_PRIV int serial_write_blocking(struct sr_serial_dev_inst *serial,
377 const void *buf, size_t count, unsigned int timeout_ms)
379 return _serial_write(serial, buf, count, 0, timeout_ms);
383 * Write a number of bytes to the specified serial port, return immediately.
385 * @param serial Previously initialized serial port structure.
386 * @param[in] buf Buffer containing the bytes to write.
387 * @param[in] count Number of bytes to write.
389 * @retval SR_ERR_ARG Invalid argument.
390 * @retval SR_ERR Other error.
391 * @retval other The number of bytes written.
395 SR_PRIV int serial_write_nonblocking(struct sr_serial_dev_inst *serial,
396 const void *buf, size_t count)
398 return _serial_write(serial, buf, count, 1, 0);
401 static int _serial_read(struct sr_serial_dev_inst *serial,
402 void *buf, size_t count, int nonblocking, unsigned int timeout_ms)
407 sr_dbg("Invalid serial port.");
411 if (!serial->lib_funcs || !serial->lib_funcs->read)
413 ret = serial->lib_funcs->read(serial, buf, count,
414 nonblocking, timeout_ms);
416 sr_spew("Read %zd/%zu bytes.", ret, count);
422 * Read a number of bytes from the specified serial port, block until finished.
424 * @param serial Previously initialized serial port structure.
425 * @param buf Buffer where to store the bytes that are read.
426 * @param[in] count The number of bytes to read.
427 * @param[in] timeout_ms Timeout in ms, or 0 for no timeout.
429 * @retval SR_ERR_ARG Invalid argument.
430 * @retval SR_ERR Other error.
431 * @retval other The number of bytes read. If this is less than the number
432 * requested, the timeout was reached.
436 SR_PRIV int serial_read_blocking(struct sr_serial_dev_inst *serial,
437 void *buf, size_t count, unsigned int timeout_ms)
439 return _serial_read(serial, buf, count, 0, timeout_ms);
443 * Try to read up to @a count bytes from the specified serial port, return
444 * immediately with what's available.
446 * @param serial Previously initialized serial port structure.
447 * @param buf Buffer where to store the bytes that are read.
448 * @param[in] count The number of bytes to read.
450 * @retval SR_ERR_ARG Invalid argument.
451 * @retval SR_ERR Other error.
452 * @retval other The number of bytes read.
456 SR_PRIV int serial_read_nonblocking(struct sr_serial_dev_inst *serial,
457 void *buf, size_t count)
459 return _serial_read(serial, buf, count, 1, 0);
463 * Set serial parameters for the specified serial port.
465 * @param serial Previously initialized serial port structure.
466 * @param[in] baudrate The baudrate to set.
467 * @param[in] bits The number of data bits to use (5, 6, 7 or 8).
468 * @param[in] parity The parity setting to use (0 = none, 1 = even, 2 = odd).
469 * @param[in] stopbits The number of stop bits to use (1 or 2).
470 * @param[in] flowcontrol The flow control settings to use (0 = none,
471 * 1 = RTS/CTS, 2 = XON/XOFF).
472 * @param[in] rts Status of RTS line (0 or 1; required by some interfaces).
473 * @param[in] dtr Status of DTR line (0 or 1; required by some interfaces).
475 * @retval SR_OK Success.
476 * @retval SR_ERR Failure.
480 SR_PRIV int serial_set_params(struct sr_serial_dev_inst *serial,
481 int baudrate, int bits, int parity, int stopbits,
482 int flowcontrol, int rts, int dtr)
487 sr_dbg("Invalid serial port.");
491 sr_spew("Setting serial parameters on port %s.", serial->port);
493 if (!serial->lib_funcs || !serial->lib_funcs->set_params)
495 ret = serial->lib_funcs->set_params(serial,
496 baudrate, bits, parity, stopbits,
497 flowcontrol, rts, dtr);
499 serial->comm_params.bit_rate = baudrate;
500 serial->comm_params.data_bits = bits;
501 serial->comm_params.parity_bits = parity ? 1 : 0;
502 serial->comm_params.stop_bits = stopbits;
503 sr_dbg("DBG: %s() rate %d, %d%s%d", __func__,
505 (parity == 0) ? "n" : "x",
513 * Set serial parameters for the specified serial port from parameter string.
515 * @param serial Previously initialized serial port structure.
516 * @param[in] paramstr A serial communication parameters string of the form
517 * "<baudrate>/<bits><parity><stopbits>{/<option>}".\n
518 * Examples: "9600/8n1", "600/7o2/dtr=1/rts=0" or "460800/8n1/flow=2".\n
519 * \<baudrate\>=integer Baud rate.\n
520 * \<bits\>=5|6|7|8 Number of data bits.\n
521 * \<parity\>=n|e|o None, even, odd.\n
522 * \<stopbits\>=1|2 One or two stop bits.\n
524 * dtr=0|1 Set DTR off resp. on.\n
525 * flow=0|1|2 Flow control. 0 for none, 1 for RTS/CTS, 2 for XON/XOFF.\n
526 * rts=0|1 Set RTS off resp. on.\n
527 * Please note that values and combinations of these parameters must be
528 * supported by the concrete serial interface hardware and the drivers for it.
530 * @retval SR_OK Success.
531 * @retval SR_ERR Failure.
535 SR_PRIV int serial_set_paramstr(struct sr_serial_dev_inst *serial,
536 const char *paramstr)
539 #define SERIAL_COMM_SPEC "^(\\d+)/([5678])([neo])([12])(.*)$"
544 int speed, databits, parity, stopbits, flow, rts, dtr, i;
545 char *mstr, **opts, **kv;
547 speed = databits = parity = stopbits = flow = 0;
549 sr_spew("Parsing parameters from \"%s\".", paramstr);
550 reg = g_regex_new(SERIAL_COMM_SPEC, 0, 0, NULL);
551 if (g_regex_match(reg, paramstr, 0, &match)) {
552 if ((mstr = g_match_info_fetch(match, 1)))
553 speed = strtoul(mstr, NULL, 10);
555 if ((mstr = g_match_info_fetch(match, 2)))
556 databits = strtoul(mstr, NULL, 10);
558 if ((mstr = g_match_info_fetch(match, 3))) {
561 parity = SP_PARITY_NONE;
564 parity = SP_PARITY_EVEN;
567 parity = SP_PARITY_ODD;
572 if ((mstr = g_match_info_fetch(match, 4)))
573 stopbits = strtoul(mstr, NULL, 10);
575 if ((mstr = g_match_info_fetch(match, 5)) && mstr[0] != '\0') {
576 if (mstr[0] != '/') {
577 sr_dbg("missing separator before extra options");
580 /* A set of "key=value" options separated by / */
581 opts = g_strsplit(mstr + 1, "/", 0);
582 for (i = 0; opts[i]; i++) {
583 kv = g_strsplit(opts[i], "=", 2);
584 if (!strncmp(kv[0], "rts", 3)) {
587 else if (kv[1][0] == '0')
590 sr_dbg("invalid value for rts: %c", kv[1][0]);
593 } else if (!strncmp(kv[0], "dtr", 3)) {
596 else if (kv[1][0] == '0')
599 sr_dbg("invalid value for dtr: %c", kv[1][0]);
602 } else if (!strncmp(kv[0], "flow", 4)) {
605 else if (kv[1][0] == '1')
607 else if (kv[1][0] == '2')
610 sr_dbg("invalid value for flow: %c", kv[1][0]);
621 g_match_info_unref(match);
625 return serial_set_params(serial, speed, databits, parity,
626 stopbits, flow, rts, dtr);
628 sr_dbg("Could not infer speed from parameter string.");
634 * Read a line from the specified serial port.
636 * @param[in] serial Previously initialized serial port structure.
637 * @param[out] buf Buffer where to store the bytes that are read.
638 * @param[in] buflen Size of the buffer.
639 * @param[in] timeout_ms How long to wait for a line to come in.
641 * Reading stops when CR or LF is found, which is stripped from the buffer.
643 * @retval SR_OK Success.
644 * @retval SR_ERR Failure.
648 SR_PRIV int serial_readline(struct sr_serial_dev_inst *serial,
649 char **buf, int *buflen, gint64 timeout_ms)
651 gint64 start, remaining;
655 sr_dbg("Invalid serial port.");
659 if (!dev_is_supported(serial)) {
660 sr_dbg("Cannot use unopened serial port %s.", serial->port);
664 start = g_get_monotonic_time();
665 remaining = timeout_ms;
670 len = maxlen - *buflen - 1;
673 len = serial_read_blocking(serial, *buf + *buflen, 1, remaining);
676 *(*buf + *buflen) = '\0';
677 if (*buflen > 0 && (*(*buf + *buflen - 1) == '\r'
678 || *(*buf + *buflen - 1) == '\n')) {
679 /* Strip CR/LF and terminate. */
680 *(*buf + --*buflen) = '\0';
684 /* Reduce timeout by time elapsed. */
685 remaining = timeout_ms - ((g_get_monotonic_time() - start) / 1000);
693 sr_dbg("Received %d: '%s'.", *buflen, *buf);
699 * Try to find a valid packet in a serial data stream.
701 * @param serial Previously initialized serial port structure.
702 * @param buf Buffer containing the bytes to write.
703 * @param buflen Size of the buffer.
704 * @param[in] packet_size Size, in bytes, of a valid packet.
705 * @param is_valid Callback that assesses whether the packet is valid or not.
706 * @param[in] timeout_ms The timeout after which, if no packet is detected, to
708 * @param[in] baudrate The baudrate of the serial port. This parameter is not
709 * critical, but it helps fine tune the serial port polling
712 * @retval SR_OK Valid packet was found within the given timeout.
713 * @retval SR_ERR Failure.
717 SR_PRIV int serial_stream_detect(struct sr_serial_dev_inst *serial,
718 uint8_t *buf, size_t *buflen,
720 packet_valid_callback is_valid,
721 uint64_t timeout_ms, int baudrate)
723 uint64_t start, time, byte_delay_us;
724 size_t ibuf, i, maxlen;
729 sr_dbg("Detecting packets on %s (timeout = %" PRIu64
730 "ms, baudrate = %d).", serial->port, timeout_ms, baudrate);
732 if (maxlen < (packet_size / 2) ) {
733 sr_err("Buffer size must be at least twice the packet size.");
737 /* Assume 8n1 transmission. That is 10 bits for every byte. */
738 byte_delay_us = 10 * ((1000 * 1000) / baudrate);
739 start = g_get_monotonic_time();
742 while (ibuf < maxlen) {
743 len = serial_read_nonblocking(serial, &buf[ibuf], 1);
746 } else if (len == 0) {
747 /* No logging, already done in serial_read(). */
749 /* Error reading byte, but continuing anyway. */
752 time = g_get_monotonic_time() - start;
755 if ((ibuf - i) >= packet_size) {
757 /* We have at least a packet's worth of data. */
758 text = sr_hexdump_new(&buf[i], packet_size);
759 sr_spew("Trying packet: %s", text->str);
760 sr_hexdump_free(text);
761 if (is_valid(&buf[i])) {
762 sr_spew("Found valid %zu-byte packet after "
763 "%" PRIu64 "ms.", (ibuf - i), time);
767 sr_spew("Got %zu bytes, but not a valid "
768 "packet.", (ibuf - i));
770 /* Not a valid packet. Continue searching. */
773 if (time >= timeout_ms) {
775 sr_dbg("Detection timed out after %" PRIu64 "ms.", time);
779 g_usleep(byte_delay_us);
784 sr_err("Didn't find a valid packet (read %zu bytes).", *buflen);
790 * Extract the serial device and options from the options linked list.
792 * @param options List of options passed from the command line.
793 * @param serial_device Pointer where to store the extracted serial device.
794 * @param serial_options Pointer where to store the optional extracted serial
797 * @return SR_OK if a serial_device is found, SR_ERR if no device is found. The
798 * returned string should not be freed by the caller.
802 SR_PRIV int sr_serial_extract_options(GSList *options,
803 const char **serial_device, const char **serial_options)
806 struct sr_config *src;
808 *serial_device = NULL;
810 for (l = options; l; l = l->next) {
814 *serial_device = g_variant_get_string(src->data, NULL);
815 sr_dbg("Parsed serial device: %s.", *serial_device);
817 case SR_CONF_SERIALCOMM:
818 *serial_options = g_variant_get_string(src->data, NULL);
819 sr_dbg("Parsed serial options: %s.", *serial_options);
824 if (!*serial_device) {
825 sr_dbg("No serial device specified.");
833 SR_PRIV int serial_source_add(struct sr_session *session,
834 struct sr_serial_dev_inst *serial, int events, int timeout,
835 sr_receive_data_callback cb, void *cb_data)
837 if ((events & (G_IO_IN | G_IO_ERR)) && (events & G_IO_OUT)) {
838 sr_err("Cannot poll input/error and output simultaneously.");
842 if (!dev_is_supported(serial)) {
843 sr_err("Invalid serial port.");
847 if (!serial->lib_funcs || !serial->lib_funcs->setup_source_add)
850 return serial->lib_funcs->setup_source_add(session, serial,
851 events, timeout, cb, cb_data);
855 SR_PRIV int serial_source_remove(struct sr_session *session,
856 struct sr_serial_dev_inst *serial)
858 if (!dev_is_supported(serial)) {
859 sr_err("Invalid serial port.");
863 if (!serial->lib_funcs || !serial->lib_funcs->setup_source_remove)
866 return serial->lib_funcs->setup_source_remove(session, serial);
870 * Create/allocate a new sr_serial_port structure.
872 * @param name The OS dependent name of the serial port. Must not be NULL.
873 * @param description An end user friendly description for the serial port.
874 * Can be NULL (in that case the empty string is used
877 * @return The newly allocated sr_serial_port struct.
879 static struct sr_serial_port *sr_serial_new(const char *name,
880 const char *description)
882 struct sr_serial_port *serial;
887 serial = g_malloc0(sizeof(*serial));
888 serial->name = g_strdup(name);
889 serial->description = g_strdup(description ? description : "");
895 * Free a previously allocated sr_serial_port structure.
897 * @param serial The sr_serial_port struct to free. Must not be NULL.
899 SR_API void sr_serial_free(struct sr_serial_port *serial)
903 g_free(serial->name);
904 g_free(serial->description);
908 static GSList *append_port_list(GSList *devs, const char *name, const char *desc)
910 return g_slist_append(devs, sr_serial_new(name, desc));
914 * List available serial devices.
916 * @return A GSList of strings containing the path of the serial devices or
917 * NULL if no serial device is found. The returned list must be freed
920 SR_API GSList *sr_serial_list(const struct sr_dev_driver *driver)
923 GSList *(*list_func)(GSList *list, sr_ser_list_append_t append);
925 /* Currently unused, but will be used by some drivers later on. */
929 if (ser_lib_funcs_libsp && ser_lib_funcs_libsp->list) {
930 list_func = ser_lib_funcs_libsp->list;
931 tty_devs = list_func(tty_devs, append_port_list);
937 static GSList *append_port_find(GSList *devs, const char *name)
942 return g_slist_append(devs, g_strdup(name));
946 * Find USB serial devices via the USB vendor ID and product ID.
948 * @param[in] vendor_id Vendor ID of the USB device.
949 * @param[in] product_id Product ID of the USB device.
951 * @return A GSList of strings containing the path of the serial device or
952 * NULL if no serial device is found. The returned list must be freed
957 SR_PRIV GSList *sr_serial_find_usb(uint16_t vendor_id, uint16_t product_id)
960 GSList *(*find_func)(GSList *list, sr_ser_find_append_t append,
961 uint16_t vid, uint16_t pid);
964 if (ser_lib_funcs_libsp && ser_lib_funcs_libsp->find_usb) {
965 find_func = ser_lib_funcs_libsp->find_usb;
966 tty_devs = find_func(tty_devs, append_port_find,
967 vendor_id, product_id);
974 SR_PRIV int serial_timeout(struct sr_serial_dev_inst *port, int num_bytes)
980 /* Get the bitrate and frame length. */
982 if (port->lib_funcs && port->lib_funcs->get_frame_format) {
983 ret = port->lib_funcs->get_frame_format(port, &baud, &bits);
987 baud = port->comm_params.bit_rate;
988 bits = 1 + port->comm_params.data_bits +
989 port->comm_params.parity_bits +
990 port->comm_params.stop_bits;
993 /* Derive the timeout. Default to 1s. */
996 /* Throw in 10ms for misc OS overhead. */
998 timeout_ms += ((1000.0 / baud) * bits) * num_bytes;
1006 /* TODO Put fallback.c content here? */