ols driver used to probe a series of available serial ports obtained
by regexp matching of common serial port names.
There are a number of problems with this approach:
1. It will probe all serial devices, including devices that do not
like to be probed, potentially causing them to act up.
2. It will try to probe serial ports which may already be opened in
other applications for other purposes.
3. It assumes the naming of the serial ports is set in stone, and
creates an unnecessary OS-specific list.
4. It produces unnecessary debug output even when an OLS device is
not connected.
5. etc...
Do not implicitly probe serial ports. Only probe the port specified
by the frontend, if any; otherwise, just quit.
Also get rid of all functionality in serial.c which was designed
specifically for random probing.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
In the case of USB drivers, a driver's dev_acquisition_stop() cannot
simply remove its fd sources from the session and close its devices:
a USB transfer might still be underway, and it needs to be finished
(and its memory freed) properly.
An sr_dev_inst->status value is added: SR_ST_STOPPING, which should
be set when the driver's dev_acquisition_stop() is called, and acts
as a marker for the USB event handler to wind up its operations.
In order for dev_acquisition_stop() to be able to set the sdi status,
however, it needs to be unconstified.
- Default to 1MHz.
The default sample rate is the lowest frequency (100Hz),
but it takes a very long time until 128K memory is full.
- Fix the 1MHz setting.
- Use samplerate list.
- Fix 10MHz frequency.
- Fix trigger.
- Change the size of memory according to the number of samples.
- Add pre-trigger (capture ratio) setting.
- Fix the first acquisition after power on.
Move sr_usb_connect() and sr_usb_open() to hardware/common/usb.c in a
slightly more generic form and add more error checks and logging.
Let genericdmm use the new/moved functions.
Whenever we added a field to the enums in libsigrok.h, we were running
the risk of breaking ABI compatibility. Any reordering of existing values
or the addition of entries other than at the bottom of the list would
cause an ABI breakage.
By hardcoding the values we ensure that any added field will have an
unused value, and will not take a value previously used by a different
flag. By doing this, we avoid confusing frontends compiled with an
earlier API.
We use 10000 as the first entry of each enum, and each "category" gets
an explicit number (10000, 20000, 30000, and so on).
Also avoid making the first value of an enum zero. A value of zero is
used as terminator item in some lists.
Remove explicit "DUMMY" (terminator) enum entries, they're not needed.
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Merge parts of the tekpower-dmm code (the chip of the TekPower
TP4000ZC seems to be an FS9721_LP3 too) and rework parts of the functions.
Adapt the tekpower-dmm and uni-t-dmm code accordingly.
Uwe Hermann
Bert Vermeulen
Alexandru Gagniuc
Toshiaki Yoshida