hp-3457a: Implement workaround for double-precision data
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.
hp-3457a: Implement basic configuration and sampling
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.
hwdriver: Add configuration key for number of powerline cycles
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.
scpi/libgpib: Place device in local mode before closing handle
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.
scpi/libgpib: Print error string instead of number on errors
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.
Soeren Apel [Sun, 27 Mar 2016 21:25:30 +0000 (23:25 +0200)]
srzip: Optimize analog output saving
- 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.
Wolfram Sang [Sun, 21 Feb 2016 09:06:10 +0000 (10:06 +0100)]
session: allocate correct amount of memory in sr_packet_copy
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.
Aurelien Jacobs [Mon, 1 Feb 2016 21:37:36 +0000 (22:37 +0100)]
beaglelogic: use standard # operator instead of ugly __STRING macro
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.
Uwe Hermann [Fri, 29 Jan 2016 21:57:48 +0000 (22:57 +0100)]
Bump libtool version (not package version) to 3:0:0.
The last release (0.3.0) had the libtool version (current:revision:age)
set to 2:0:0. Since this release adds, removes, and changes interfaces,
the new version is 3:0:0.
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.
Wolfram Sang [Sat, 9 Jan 2016 07:17:57 +0000 (08:17 +0100)]
input: vcd: avoid needless copying
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.
Wolfram Sang [Sat, 9 Jan 2016 17:27:14 +0000 (18:27 +0100)]
input: vcd: try to continue when a vector was found
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:
Wolfram Sang [Sat, 9 Jan 2016 16:40:10 +0000 (17:40 +0100)]
input: vcd: properly bail out on missing identifiers
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:
Soeren Apel [Fri, 8 Jan 2016 22:00:55 +0000 (23:00 +0100)]
Trace32 import module: Send trigger only once
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.
Uwe Hermann [Thu, 7 Jan 2016 22:22:42 +0000 (23:22 +0100)]
lecroy-logicstudio: Fix some compiler warnings on MinGW.
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(
^
Wolfram Sang [Sun, 3 Jan 2016 21:27:43 +0000 (22:27 +0100)]
dmm: vc870: render POWER_FACTOR as such and not as frequency
The primary display is the power factor, the secondary is the frequency.
This got mixed up, so change the order. We also need to fix the
conversion factor.
Wolfram Sang [Sun, 3 Jan 2016 21:27:42 +0000 (22:27 +0100)]
dmm: vc870: keep the order when processing modes
is_power_apparent_power is index 0 of function 0x39, so it is better to
process it first and the later indices after that (we need to add
another one with a different patch later).
Wolfram Sang [Sun, 3 Jan 2016 21:27:40 +0000 (22:27 +0100)]
dmm: vc870: show display value properly in debug output
It was confusing to see the display value (5 digits) printed in debug
output as a float. Print it the same way as shown on the real device,
without comma, of course.
This also allows to simplify the code a little.
Martin Ling [Mon, 2 Nov 2015 00:40:40 +0000 (00:40 +0000)]
Add new sr_dev_options() helper function.
This function replaces the pattern of calling config_list() with
SR_CONF_DEVICE_OPTIONS to obtain a list of device options. Note
that this does not include the SR_CONF_{GET,SET,LIST} bitmask,
which is now retrieved for a specific key by calling
sr_dev_config_capabilties().