This adds support for the Testo 435-4, with differential pressure
measurement built in, and probes for wind speed and temperature/humidity
at 293 kelvin.
Support for other probe types will have to be added by people with
access to those probes.
Models other than the 435-4 may well work unchanged, but this is
difficult to predict. Most likely new unit types will need to be added,
and possibly the protocol handling may need to be more flexible and
model-dependent to cope with 5-byte values and other minor changes
in the protocol.
We need to include unistd.h for usleep():
hardware/asix-sigma/asix-sigma.c: In function 'sigma_fpga_init_bitbang':
hardware/asix-sigma/asix-sigma.c:450:3: warning: implicit declaration of function 'usleep'
usleep(10000);
And we need to tweak the type of chunks_per_read to match dl_lines_total:
hardware/asix-sigma/asix-sigma.c: In function 'download_capture':
hardware/asix-sigma/asix-sigma.c:1161:39: warning: comparison between signed and unsigned integer expressions
dl_lines_curr = MIN(chunks_per_read, dl_lines_total);
Init the cur_sample_rate to 200kHz. This is now the default sample
rate for the ASIX Sigma if no other is specified by -c samplerate=N
on the command line. Without this change, the driver would crash on
SIGFPE because a division by zero would happen.
Signed-off-by: Marek Vasut <marex@denx.de>
Due to the recent changes in the sigma driver, the trigger handling got
broken. Fix this by properly calculating and propagating the fact that
the trigger happened.
Signed-off-by: Marek Vasut <marex@denx.de>
Pull out the code for decoding the DRAM clusters into separate function.
This shall improve readability some more.
Signed-off-by: Marek Vasut <marex@denx.de>
These two values can pulled out from devc->state, so there really is
no need to pass them as function argument when we already pass the
devc.
Signed-off-by: Marek Vasut <marex@denx.de>
This function could have never returned correct data. Rework the decoding
logic according to the Sigma documentation. This patch also fixes the
handling of partial DRAM lines and partial DRAM clusters.
While at it, do not allocate megabytes of data on stack, just allocate 2KiB
which is plenty for all the work this function needs to do.
Signed-off-by: Marek Vasut <marex@denx.de>
Bert Vermeulen
Matthias Heidbrink
Uwe Hermann
Mike Frysinger
Aurelien Jacobs
Martin Ling
Marcus Comstedt
Marek Vasut