* ad9910: fix asf range
The ASF is a 14-bit word. The highest possible value is 0x3fff, not
0x3ffe. `int(round(1.0 * 0x3fff)) == 0x3fff`.
I don't remember and understand why this was 0x3ffe since the beginning.
0x3fff was already used as a default in `set_mu()`
Signed-off-by: Robert Jördens <rj@quartiq.de>
* RELEASE_NOTES: ad9910 asf scale change
Co-authored-by: David Nadlinger <code@klickverbot.at>
* Input validation and masking of SI -> mu conversions (close#1446)
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
* Update RELEASE_NOTES
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
Co-authored-by: Robert Jördens <rj@quartiq.de>
* ad53xx: voltage_to_mu() validation & documentation (closes#1443, #1444)
The voltage input (float) is checked for validity. If we need more
speed, we may want to check the DAC-code for over/underflow instead.
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
* ad53xx documentation: voltage_to_mu is only valid for 16-bit DACs
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
* AD53xx: add voltage_to_mu method (closes#1341)
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
* ad53xx: improve voltage_to_mu performance
Interger comparison is faster than floating point math.
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
* AD53xx: voltage_to_mu method now uses attribute values
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
* Fixup RELEASE_NOTES.rst
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
* ad53xx: documentation improvements
voltage_to_mu return value
14-bit DAC support
Signed-off-by: Marius Weber <marius.weber@physics.ox.ac.uk>
Edges on pulses shorter than the RTIO period were missed because the
reference sample and the last sample of the serdes word are the same.
This change enables detection of edges on pulses as short as the
serdes UI (and shorter as long as the pulse still hits a serdes sample
aperture).
In any RTIO period, only the leading event corresponding to the first
edge with slope according to sensitivity is registerd. If the channel is
sensitive to both rising and falling edges and if the pulse is contained
within an RTIO period, or if it is sensitive only to one edge slope and
there are multiple pulses in an RTIO period, only the leading event is
seen. Thus this possibility of lost events is still there. Only the
conditions under which loss occurs are reduced.
In testing with the kasli-ptb6 variant, this also improves resource
usage (a couple hundred LUT) and timing (0.1 ns WNS).
