Use the standard connection_id field from the struct sr_dev_inst for
storing the device address rather than using the custom address field in
the driver state struct. This makes things more consistent with the
framework.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The sigrok core needs a list of all available drivers. Currently this list
is manually maintained by updating a global list whenever a driver is added
or removed.
Introduce a new special section that contains the list of all drivers. The
SR_REGISTER_DEV_DRIVER() and SR_REGISTER_DEV_DRIVER_LIST() macro is used to
add drivers to this new list. This is done by placing the pointers to the
driver into a special section. Since nothing else is in this section it is
known that it is simply a list of driver pointers and the core can iterate
over it as if it was an array.
The advantage of this approach is that the code necessary to add a driver
to the list is completely contained to the driver source and it is no
longer necessary to maintain a global list. If a driver is built it will
automatically appear in the list, if it is not built in won't. This means
that the list is always correct, whereas the previous approach used ifdefs
in the global driver list file which could get out-of-sync with the actual
condition when the driver was built.
Any sr_dev_driver structs that are no longer used outside the driver module
are marked as static.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Most drivers have a forward declaration to their sr_dev_driver struct at
the beginning of the driver file. This is due to historic reasons and often
no longer required. So remove all the unnecessary forward declarations.
Some drivers still require the forward declaration, but only reference the
driver struct from within the driver scan() callback. Since the driver
struct is passed to the scan callback replace the references to the global
variable with the local parameter. In some cases this requires adding the
parameter to some of the helper functions that are called from the scan()
callback.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
To capture more than 16MSamples the hardware run length encoding option
must be enabled, or captured data present errors.
RLE encoding/decoding is done in hardware. Data streamed to the USB interface
is not encoded.
This commit enables RLE encoding for captures longer than 16MSamples.
Signed-off-by: Diego Asanza <f.asanza@gmail.com>
This commit expands support for acquisition using an external clock,
now allowing the user to select the clock edge.
Signed-off-by: Diego Asanza <f.asanza@gmail.com>
For low sampling speeds (up to 25MHz) DSLogic offers a streaming mode where
samples are sent directly to the USB interface, like a fx2lafw device.
For high sampling speeds (up to 400MHz) only buffer mode is supported.
This commit allows the user to set which mode should be used. The configuration
is done by using SR_CONF_CONTINUOUS.
Signed-off-by: Diego Asanza <f.asanza@gmail.com>
The DSLogic provides two FPGA images: one for 3.3V and the other for 5V logic.
The DSLogic Pro allows to set an arbitrary voltage threshold via USB command.
This commit adds support for the DSLogic to load the FPGA image according to
an user-selectable voltage threshold.
For the DSLogic Pro, one of two fixed voltage thresholds are set, depending on
the user-selected value.
Tested with DSLogic and DSLogic Pro.
Signed-off-by: Diego Asanza <f.asanza@gmail.com>
Tested-by: Andrew Bradford <andrew@bradfordembedded.com>
This commit implements DSLogic trigger functionality.
The following triggers are working:
- trigger on rising edge
- trigger on falling edge
- trigger on any edge
- trigger on logic one
- trigger on logic zero
Pre-trigger capture ratio is also working.
Signed-off-by: Diego Asanza <f.asanza@gmail.com>
Tested-by: Andrew Bradford <andrew@bradfordembedded.com>
The demo device has support for specifying the number of analog and logic
channels it should have. Currently this does not work correctly if one of
them is set to zero. Being able to set the number of channels to zero for
one of the channel types is quite useful for corner case testing though.
Make the following modifications to handle it correctly:
1) If the channel count is zero no channel group for that channel type
should be created since a channel group needs at least one channel.
2) Drop the check if logic_unitsize is less or equal to zero in
prepare_data() since this condition will always be true if the number of
logic channels is zero and it is not possible to create a demo device with
only analog channels.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Now that the signature of std_init() matches that of the driver init()
callback we can remove all wrapper functions around std_init() and use it
directly as the init() callback.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
std_init() checks if the pass in struct sr_dev_driver is non-NULL and
prints a error message and returns an error if it is NULL.
std_init() is exclusively called from driver init() callbacks for which the
core already checks if the struct sr_dev_driver is non-NULL before invoking
the callback. This means the check in std_init() will always evaluate to
false. So drop this check.
This also means that the prefix parameter that was used in the error
message is no longer needed and can be removed from the function signature.
Doing so will make the std_init() function signature identical to the
init() callback signature which will allow to directly use it as such.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The std_init() callback has the order of the first two paramters opposite
to the init() callback. This is primarily due to historical development.
Since the std_init() function is usually called from a driver's init()
callback aligning the order will allow direct register pass through rather
than having to swap them around. It also allow to eventually use the
std_init() function directly as the init() callback.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The zeroplus-logic-cube driver uses libusb_get_device_list() but neglects
to call the matching libusb_device_list_free() on the error path. This will
leak the memory allocated for the list as well as all the devices.
To address the issue use sr_usb_open() instead of open-coding its
functionality. sr_usb_open() correctly handles freeing the device list.
The issue was discovered using the following coccinelle semantic patch:
// <smpl>
@@
identifier devlist;
expression ctx, ret;
statement S;
@@
(
libusb_get_device_list(ctx, &devlist);
|
ret = libusb_get_device_list(ctx, &devlist);
if (ret < 0) S
)
... when != libusb_free_device_list(devlist, ...)
*return ...;
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The victor-dmm driver uses libusb_get_device_list() but neglects to call
the matching libusb_device_list_free() on the error path of libusb_open().
This will leak the memory allocated for the list as well as all the
devices.
To address the issue use sr_usb_open() instead of open-coding its
functionality. sr_usb_open() correctly handles freeing the device list.
The issue was discovered using the following coccinelle semantic patch:
// <smpl>
@@
identifier devlist;
expression ctx, ret;
statement S;
@@
(
libusb_get_device_list(ctx, &devlist);
|
ret = libusb_get_device_list(ctx, &devlist);
if (ret < 0) S
)
... when != libusb_free_device_list(devlist, ...)
*return ...;
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The testo driver uses libusb_get_device_list() but neglects to call the
matching libusb_device_list_free() on the error path. This will leak the
memory allocated for the list as well as all the devices.
To address the issue use sr_usb_open() instead of open-coding its
functionality. sr_usb_open() correctly handles freeing the device list.
The issue was discovered using the following coccinelle semantic patch:
// <smpl>
@@
identifier devlist;
expression ctx, ret;
statement S;
@@
(
libusb_get_device_list(ctx, &devlist);
|
ret = libusb_get_device_list(ctx, &devlist);
if (ret < 0) S
)
... when != libusb_free_device_list(devlist, ...)
*return ...;
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
lascar_scan() calls libusb_get_device_list() but never the matching
libusb_free_device_list(). This will leak the memory allocated for the
device list as well as all the devices. To fix this add the missing
libusb_free_device_list().
While we are at it also make sure to handle errors returned by
libusb_get_device_list().
The issue was discovered using the following coccinelle semantic patch:
// <smpl>
@@
identifier devlist;
expression ctx, ret;
statement S;
@@
(
libusb_get_device_list(ctx, &devlist);
|
ret = libusb_get_device_list(ctx, &devlist);
if (ret < 0) S
)
... when != libusb_free_device_list(devlist, ...)
*return ...;
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Some drivers check in some of their driver callbacks if the driver has been
initialized and return an error if it has not.
For the scan() callback the sigrok core checks if the driver has been
initialized and if not returns an error. So it is not possible that the
scan() callback gets called if the driver is not initialized. Without the
scan() callback succeeding it is not possible to get a reference to a
device which is associated with the driver, so it is not possible that any
of the device specific callbacks is called without the driver first being
initialized either.
In conclusion these checks are not necessary since they never evaluate to
true and can be dropped. If they should ever become necessary they should
be done in the sigrok core so all drivers and all callbacks are equally
handled.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
SR_CONF_CONTINUOUS is a capability option indicating whether a device
supports continuous capture or not. If the option exists the device
supports continuous capture and otherwise it doesn't. There is no value
associated with it and hence setting the SR_CONF_SET flag is nonsensical.
None of the drivers which set SR_CONF_SET for SR_CONF_CONTINUOUS handle it
in their config_set() callback and return an error if an application tried
to perform a config_set() operation for SR_CONF_CONTINUOUS.
Simply remove the SR_CONF_SET flag from all SR_CONF_CONTINUOUS options.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Every single hardware driver has the very same implementation of the
dev_list() callback. Put this into a helper function in the standard helper
library and use it throughout the drivers. This reduces boiler-plate code
by quite a bit.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
If a driver does not implement a dev_clear() callback the core will
automatically call std_dev_clear(di, NULL). Remove all driver dev_clear()
implementations that are identical to default. This reduces the amount of
boiler-plate code.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
std_init() allocates a drv_context struct which needs to be freed by the
driver in its cleanup struct. But the vast majority of drivers does never
does this causing memory leaks.
Instead of addressing the issue by manually adding code to free the struct
to each driver introduce a new helper function std_cleanup() that takes
care of this. In addition to freeing the drv_context struct std_cleanup()
also invokes sr_dev_clear() which takes care of freeing all devices
attached to the driver.
Combining both operations in the same helper function allows to use
std_cleanup() as the cleanup callback for all existing drivers, which
reduces the amount of boiler-plate code quite a bit.
All drivers are updated to use the new helper function.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Devices for the scpi-pps driver do have additional data attached to it that
needs to be freed when the device is freed. While the driver gets it right
for the cleanup() callback it does not for the dev_clear() callback. This
will cause memory leaks when sr_dev_clear() is called for this driver.
To fix this let the dev_clear() free the additional data.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Devices for the deree-de5000 driver do have additional data attached to it
that needs to be freed when the device is freed. While the driver gets it
right for the cleanup() callback it does not implement a dev_clear()
callback, so the default dev_clear() implementation is used which will not
free the additional data. This will cause memory leaks when sr_dev_clear()
is called for this driver.
To fix this provide a dev_clear() implementation that frees the additional
data.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Devices for the demo driver do have additional data attached to it that
needs to be freed when the device is freed. While the driver gets it right
for the cleanup() callback it does not implement a dev_clear() callback, so
the default dev_clear() implementation is used which will not free the
additional data. This will cause memory leaks when sr_dev_clear() is called
for this driver.
To fix this provide a dev_clear() implementation that frees the additional
data.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
When g_file_get_contents() encounters an error a new GError will be
allocated and passed back to the application. The application is
responsible for freeing this GError.
The baylibre-acme driver currently does not do this and as a result leaks
memory during the scan process when no device is found.
Add the missing g_error_free() invocations to fix the issue.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Make sure to free the FTDI device list and the FTDI context in scan_all()
otherwise memory leaks can be observed. Also make sure to free the FTDI
context in scan_device() on the error path.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
This makes the code shorter, simpler and more consistent, and also
ensures that the (same) debug messages are always emitted and the
packet.payload field is consistently set to NULL always, etc.
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.
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.
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.
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>
Marcus Comstedt
George Hopkins
Lars-Peter Clausen
Uwe Hermann
Stefan Brüns
Diego Asanza
Bert Vermeulen
Benjamin Larsson
Joel Holdsworth
Alexandru Gagniuc
Sergey Alirzaev
Markus Siegert