The USBee AX hardware needs a sampling clock that is lower than
the 30MHz or 48MHz that the FX2 has to offer. This flag will enable
clocking via the CTL2 pin that is an even divisor of the main clock.
The driver did not look at the mq_flags provided with the
SR_CONF_MEASURED_QUANTITY key, and it defaulted to DC measurements.
Use the second member of the tuple provided by the config key, which
represents the flags for the measurement, and set the instrument's
measurement mode accordingly.
On the high-end bench multimeters, resistance can be measured with a
kelvin connection as well as the more common two wire method. Provide
a flag which can indicate if four-wire mode is used.
Due to a PEBKAC error, after the last sample was sent, a new
measurement was triggered, but its value was never sent down the
session bus. This is easily fixed by incrementing devc->num_samples
right after a measurement is sent instead of when a measurement is
retriggered.
g_variant_print() allocates memory during call. Save the pointer
so that it can be free'd afterwards.
==10048== 16 bytes in 1 blocks are definitely lost in loss record 17 of 37
==10048== at 0x4C2DEAE: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10048== by 0x536C85D: g_realloc (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x53877C6: ??? (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x5388B60: g_string_append_vprintf (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x5388D83: g_string_append_printf (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x539D034: g_variant_print_string (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x539C92C: g_variant_print (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x4E5F713: log_key (hwdriver.c:597)
==10048== by 0x4E5FCD5: sr_config_set (hwdriver.c:752)
==10048== by 0x408C1A: run_session (session.c:661)
==10048== by 0x404FC5: main (main.c:267)
==10048==
==10048== 16 bytes in 1 blocks are definitely lost in loss record 18 of 37
==10048== at 0x4C2DEAE: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10048== by 0x536C85D: g_realloc (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x53877C6: ??? (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x5388B60: g_string_append_vprintf (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x5388D83: g_string_append_printf (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x539D034: g_variant_print_string (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x539C92C: g_variant_print (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4400.1)
==10048== by 0x4E5F713: log_key (hwdriver.c:597)
==10048== by 0x4E5FBDD: sr_config_get (hwdriver.c:709)
==10048== by 0x4080D7: datafeed_in (session.c:196)
==10048== by 0x4E5D47E: sr_session_send (session.c:1192)
==10048== by 0x4E62682: std_session_send_df_header (std.c:101)
Using non power of 2 sizes causes the driver to not work on OS X.
Depending on the usb transfer mode the buffer sizes will map
perfectly to the underlying transport protocol.
scpi_serial generate an POLLIN event after the requested data is returned
by the instrument. For USBTMC it is necessary to
1. send an REQUEST_DEV_DEP_MSG_IN request
2. submit an USB bulk read transfer asynchronously.
Using the synchronous libusb_bulk_read() does not generate an POLLIN event.
Solving this properly needs major surgery in spci_usbtmc_libusb.
While some transports add a terminating (carriagereturn+)linefeed
unconditionally, the USBTMC transport does not. At least the R&S HMO1002
requires the linefeed and locks up otherwise. Fixes bug #784.
This changes the TCP and VXI transport from CR+LF to LF only.
Also fixes a possible memory leak for VXI, where the temporary command
buffer was not freed in case of a write error.
According to USBTMC usb488 subclass spec, wValue hast to be 0 for both
LOCAL_LOCKOUT and GO_TO_LOCAL. At least required for R&S HMO1002, the
bad request results in a STALL. Fixes bug #783.
After acquisition start, DSLogic stores samples in memory, and when done it
sends a USB packet with the trigger position.
This initial fillup can take some time. If the user requests a session stop
in between, the USB transfer is cancelled and the session hangs because it
is not closed properly.
This commit manages this case and closes the session properly when
acquisition is stopped by the user.
Signed-off-by: Diego F. Asanza <f.asanza@gmail.com>
According to the infos I have, VCD files should be plain ASCII, but we
got report of a version adding a UTF8 BOM at the beginning of the file,
so we need to skip it.
This fixes bug #755.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
For some reason, uploading the FPGA binary into DSLogic in small chunks
does not work. In this commit, the whole binary image is loaded into memory
and transfer is done in one chunk.
Furthermore, the FPGA configuration structure was not initialized
properly. This was changed with the initialization values taken from the
original DSLogic software.
Signed-off-by: Diego Asanza <f.asanza@gmail.com>
Certain output modules do not understand double-precision data.
Although we need double precision to represent the full resolution
of 7.5 digit readings, temporarily convert data to single precision
so that the output modules understand it. While the reasing might be
off by a few counts, we ensure the output modules do not display
completely bogus data.
For details, see bug #779.
KNOWN ISSUES:
- When sampling with 100 NPLC, the poll function will timeout a few
times before the first sample is acquired. Increasing the timeout
passed to sr_scpi_source_add() will cause all the other commands to
be processed slowly, producing a sampling rate of about one sample
every ten seconds.
- Support for plug-in cards (44491A and 44492A) is not implemented.
- Support for AC, AC+DC and four-wire resistance measurements is not
implemented.
- Support for configuring the frequency measurement source is not
implemented.
High precision multimeters have a special setting, called "number of
powerline cycles" (NPLC) which determines the integration time of the
ADC in terms of the power line period. Some devices need their NPLC
adjusted from the default value before they can measure at their full
rated precision.
Devices connected on a real GPIB bus are placed in remote mode when
opening them. libgpib does not automatically place devices back in
local mode when closing the handle. It is thus possible to lock out a
GPIB device by probing it with libsigrok.
This happens on the HP 3457A meter, which does not have a "LOCAL"
command, and must be put back in local mode via GPIB handshake.
ibloc() takes care of this, and it does it on a per-device basis,
such that other devices on the GPIB bus are not affected.
libgpib has an error_string which formats a numeric error code into a
human-readable description. Use that instead of printing the numeric
code, as it makes debugging easier.
- Don't set capturefile if no logic channels are saved
- Don't set total probes if no logic channels are saved
- Save analog channels without index gaps (e.g. probe1/probe4)
Note: This commit is based on the initial implementation by
Christer Ekholm (but stashed into one commit), with some adaptations
(forward porting, coding style and consistency fixes) by Uwe Hermann.
We want the size of the struct, not of a pointer to the struct. And to
be absolutely future proof, dereference the pointer we are assigning the
memory to (not the one we are copying the data from). Found by Coverity,
CID 50858.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
The firmware has "on\n" and "off\n" commands since 1.10, so use them.
Apparently you can only set the state (on/off) of the load, but it's
not possible to query the current state.
Also note that the __ namespace is reserved by POSIX for its private
usage, so user land software should never rely on any kind of API
with a __ prefix.
For session sources without a file descriptor to poll a negative number
should be passed for the fd parameter. The hung-chang-dso-2100 driver
currently passes 0 instead, which is the stdin stream. Fix the issue by
passing -1 for the fd parameter.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Accept (and set to default) 0 for numchannels which means 'unlimited'.
I think it is convenient to read all channels of a vcd file by default.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Benefits:
* only channels really used in vcd will be added
* we can give them the proper name found in the vcd file
* less code :)
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Current code moves the identifier string one byte to the front to
overwrite the bit value, so 'tokens[i]' is a string to compare against
the desired value. This copying is unnecessary, just pass a properly
setup pointer.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
No need to bail out on vectors. As long as there are tokens left, we can
try to parse the rest. Also, print a message so the user knows what's
going on. Here is a testcase vcd:
$timescale 1 ns $end
$var wire 1 n0 addr_0 $end
$var wire 1 n1 addr_1 $end
$enddefinitions $end
#0
0n0
b1 n1
#1
1n0
b0 n1
#2
0n0
b1 n1
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
If we hit the missing identifier case, then we reached the end of the
token list. So, we should break out of the loop, and not continue.
Otherwise we will go past the end of the array as this minimal testcase
shows:
$timescale 1 ns $end
$var wire 1 n0 addr_0 $end
$enddefinitions $end
1
gives:
$ ./sigrok-cli -I vcd -i no_mod.vcd -O vcd -o /tmp/o.vcd
Segmentation fault
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
A $var block can have an optional index item which looks like '[<sth>]'.
Parse it, too, and append it to the channel name.
This fixes bug #322. A first version was posted by Simon Richter. This
version is rebased and simplified.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
As we're downsampling, several record time stamps can match the specified
trigger time. For this reason, it's possible that several trigger packets
are sent when a file is loaded. This prevents the issue and sends a
trigger packet only on the first matching record.
src/hardware/lecroy-logicstudio/protocol.c: In function 'handle_fetch_samples_done':
src/hardware/lecroy-logicstudio/protocol.c:261:3: warning: passing argument 6 of 'libusb_fill_bulk_transfer' from incompatible pointer type
recv_bulk_transfer, (void *)sdi, USB_TIMEOUT_MS);
^
In file included from ./src/libsigrok-internal.h:31:0,
from src/hardware/lecroy-logicstudio/protocol.h:26,
from src/hardware/lecroy-logicstudio/protocol.c:23:
/home/uwe/sr_mingw/include/libusb-1.0/libusb.h:1546:20: note: expected 'libusb_transfer_cb_fn' but argument is of type 'void (*)(struct libusb_transfer *)'
static inline void libusb_fill_bulk_transfer(struct libusb_transfer *transfer,
^
src/hardware/lecroy-logicstudio/protocol.c: In function 'fetch_samples_async':
src/hardware/lecroy-logicstudio/protocol.c:314:4: warning: passing argument 6 of 'write_registers_async' from incompatible pointer type
handle_fetch_samples_done);
^
src/hardware/lecroy-logicstudio/protocol.c:200:12: note: expected 'libusb_transfer_cb_fn' but argument is of type 'void (*)(struct libusb_transfer *)'
static int write_registers_async(const struct sr_dev_inst *sdi,
^
src/hardware/lecroy-logicstudio/protocol.c: In function 'lls_start_acquisition':
src/hardware/lecroy-logicstudio/protocol.c:1122:3: warning: passing argument 6 of 'libusb_fill_interrupt_transfer' from incompatible pointer type
recv_intr_transfer, (void *) sdi, USB_TIMEOUT_MS);
^
In file included from ./src/libsigrok-internal.h:31:0,
from src/hardware/lecroy-logicstudio/protocol.h:26,
from src/hardware/lecroy-logicstudio/protocol.c:23:
/home/uwe/sr_mingw/include/libusb-1.0/libusb.h:1602:20: note: expected 'libusb_transfer_cb_fn' but argument is of type 'void (*)(struct libusb_transfer *)'
static inline void libusb_fill_interrupt_transfer(
^
There is no status bit for RMS. We know about RMS if certain modes are
active. So, drop this superfluous variable.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Joel Holdsworth
Uwe Hermann
Alexandru Gagniuc
Sergey Alirzaev
Benjamin Larsson
Markus Siegert
Stefan Brüns
Diego F. Asanza
Wolfram Sang
Soeren Apel
Martin Ling
Chriter
Aurelien Jacobs
Lars-Peter Clausen