The high bit of the sample, denoting this is a count, was not getting
properly cleared. This resulted in an inevitably negative count, and
corruption of the sample buffer before it was transferred to the
frontend.
The single sample buffer, up to 4 bytes long, was not getting initialized
on (every) acquisition start, only after the first full sample was in.
This caused the first sample to potentially hold garbage.
ols allows both external and internal test patterns at ~20khz
which are helpful for unit tests and demos.
pattern=internal -> route pattern internally to all 32 pins
(input otherwise disabled)
pattern=external -> generates pattern on unbuffered pins 16:31
(which can be looped back to the buffered pins 0:15)
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Stage count was always getting incremented one more than
actual stages, and this caused a extra stage with zero'ed data
probe lines to have the start bit field.
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
The map_eeprom_data function is currently unknown. The map entries
provided were observed via bus-snooping of the vendor software on my
device. Other devices may need additional values.
Since the uni-t-ut32x series handles devices with the same USB VID.PID,
which is linked to the WCH CH9325 USB/HID-UART interface chip, this
driver can no longer assume it can handle anything with this VID.PID.
The Tecpel DMM-8060 was added since we assumed it would be a rebadged
Voltcraft VC-820 (since we know the Tecpel DMM-8061 is a rebadged VC-840).
However, according to the vendor webpage it doesn't have PC connectivity
at all, so drop it for now (until someone can confirm that it does or does
not actually have RS232/USB connectivity).
Can't really count on it either way though, the device is just
too flaky to conclude whether it's going to work or not, regardless
of the status returned.
Bert Vermeulen
Matt Ranostay
Uwe Hermann
Marcus Comstedt
Florian Knodt
Marc Schink