Device errors regarding properties such as sample
rate or frequency tuning are almost always fatal and
lead to the common error "assuming TRX is dead".
Make sure that these errors are clearly presented to
the user.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2700 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Perform a UHD device search before constructing the object,
and inform the user if no device is found.
No device found is the most common reason for the transceiver
to fail with the dreaded error "assuming TRX is dead".
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2699 19bc5d8c-e614-43d4-8b26-e1612bc8e597
This configuration is invalid because of FPGA based timestamp
support for the USRP1 in the UHD driver.
Kindly inform the user to recompile with libusrp support from
GNU Radio.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2698 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Before setting the master clock rate, make sure that the
device is capable of being set. For now, assume that devices
that operate with default clock rates above 64 MHz,
specifically USRP2/N200/N210, cannot be set at 52 MHz.
Inform the user that these devices can be used with the
compile time option of host based resampling.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2697 19bc5d8c-e614-43d4-8b26-e1612bc8e597
It was possible to reach a state where a resampled burst would
overrun the transmit output buffer and corrupt the global
allocated signal vectors. The result was a segmentation fault
when attempting to access heap allocated signal vectors since
the pointers were garbage.
Whether the segfault occured or not appears to depend on the
memory location of the signal vector pointers, since it does
not occur on all systems.
Double buffer size to accomodate an incoming burst plus up to
a full chunk that may be remaining from the previous resampling
operation.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2691 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Not sure why this functionality is commented out.
Make install places the FPGA firmware image in:
/usr/local/share/usrp/rev2/
/usr/local/share/usrp/rev4/
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2690 19bc5d8c-e614-43d4-8b26-e1612bc8e597
With transceiver integration, the resampling filter files were
dropped. This created a working resampling implementation for
the USRP2 / N200, but with spectrum irregulaties that likely
caused issues at longer range operation. Simply reinsert the
filter files and modify the filter initialization to use them.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2689 19bc5d8c-e614-43d4-8b26-e1612bc8e597
The following option selects single daughterboard use on
side A only. Otherwise, the default setting is TX on A and
Rx on B.
./configure --with-singledb
Other options are possible, as per the following enum, but
for simplicity with configure options, there are only two
choices.
enum dboardConfigType {
TXA_RXB,
TXB_RXA,
TXA_RXA,
TXB_RXB
};
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2687 19bc5d8c-e614-43d4-8b26-e1612bc8e597
External reference selection was already compile-time
determined by a hard coded value. Make it selectable
as a configure option.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2686 19bc5d8c-e614-43d4-8b26-e1612bc8e597
For network based devices (USRP2, N200, etc.), increase the
latency from 2 to 3 frames, which effectively buffers more
samples on the host in front of the Ethernet interface.
USB devices (USRP1 and B100) utilize an adaptive mechanism
so they are less effected by this value.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2685 19bc5d8c-e614-43d4-8b26-e1612bc8e597
The low-level RadioDevice interface is agnostic to libusrp
or uhd based devices. 'make' allocates and returns a
pointer to a generic RadioDevice implemented for whatever
class of device determined at compile time.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2684 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Usage:
./configure --with-usrp1
Enable non-UHD USRP1 support through the gnuradio-based
driver. Requires gnuradio (libusrp) to be installed.
./configure --with-resample
Enable host-based 400ksps to 270.833ksps resampling.
Only supported for UHD devices. If not enabled, the GSM
sample rate is requested directly from the device.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2681 19bc5d8c-e614-43d4-8b26-e1612bc8e597
With the introduction of the B100, there is USB support
using UHD devices. The characteristics of the trasmit
side burst submissions are more reflective of the bus
type than the device or driver.
Use a fixed latency interval for network devices and the
adaptive underrun approach for USB devices - regardless
of driver or device type.
The GPMC based transport on the E100 appears unaffected
by either latency scheme, which defaults to network.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2677 19bc5d8c-e614-43d4-8b26-e1612bc8e597
The resampling transceiver is unified with the 52MHz
version. The option to resample 400ksps from the device
to a GSM appropriate 270.833ksps is enabled at compile
time with the following option.
./configure --with-resamp
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2672 19bc5d8c-e614-43d4-8b26-e1612bc8e597
The readSamples call does not return less than the
number of samples requested. Doing otherwise is a
fatal error. So on overruns, which are not fatal,
continue reading until the requested number of
samples is received.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2671 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Move push and pull of buffers into a dedicated file. This will
allow us to swap out resampling, non-resampling, and possibly
floating point device interfaces while presenting a single
floating point abstration in the interface itself.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2670 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Remove radio clock and vector interfaces into their own
files. This clears up and simplifies the radio interface
and, additionaly, prepares for a further split of the I/O
portion for optional resampler use.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2669 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Unused and causes the follwing errors on certain UHD versions.
"ValueError: unhandled clock configuration reference source: _external_"
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2664 19bc5d8c-e614-43d4-8b26-e1612bc8e597
If the master clock rate fails to set - this basically only happens
when the wrong transceiver is choosen for the particular device -
the error is fatal and the transceiver should exit. The clock rate
setting was previously never verified.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2663 19bc5d8c-e614-43d4-8b26-e1612bc8e597
This patch fixes some confusion in gain vs. attenuation
setting. The UHD device is controlled through gain
settings but OpenBTS represents gain in terms of
attenuation relative to maximum - 0 dB attenuation.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2662 19bc5d8c-e614-43d4-8b26-e1612bc8e597
UHD recently modified the E100 type name from 'usrp-e' to
'e100' causing the device make to fail. Remove device type
checking to keep things working with the older and newer
names.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2661 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Commit e161523c (transceiver: simplify transmit power control)
changed transmit gain control to RF setting only. This was
appropriate for a WBX board with 25 dB of gain control, but
inappropriate for an RFX with fixed transmit gain.
RFX boards will regain the ability to set transmit
attenuation. Since gain is set on the RF side first,
reintroducing digital gain settings should have limited
overall effect on non-RFX daughterboards.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2660 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Receive buffer flush should continue to read until
either the desired number of packets has been read or
timeout, which means that the buffer has been emptied.
These are expected behaviours and should return true.
Ignore errors at this stage as the data and associated
metadata can be considered garbage and not worth
reporting. Actual error conditions will be caught
further downstream when useful data comes in.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2659 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Transmit tuning was primarily setup for side A only. Some boards
- WBX - would still tune with improper channel arguments, though
receiver performance was disrupted.
Previous testing was primarily with single board on side A only
or dual configuration with side A transmit, so this bug largely
went undetected. Patch tested with RFX and WBX daughterboards
in single and dual configurations sides A and B.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2658 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Bump abnormal asynchronous events - basically send errors -
up to ERROR level. These errors are dominated almost
entirely by underflow events, which should not be regularly
occuring.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2656 19bc5d8c-e614-43d4-8b26-e1612bc8e597
If no bursts were received over a long enough duration
then the threshold would roll into negative territory.
The energy detection is based on a comparison with the
squared threshold, so all handsets would become
effectively barred after a certain period of
inactivity.
In theory, this bug also exists in the mainline tree,
but there the daughterboard receive gain is fixed at
max, which always allows the ADC to generate sufficient
noise to trigger the energy dectector and keep the
system in a valid steady state.
To fix, simply add a negative value check like those
already in place for other locations.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2655 19bc5d8c-e614-43d4-8b26-e1612bc8e597
UHD will internally accept floats with a range of +/-1.0,
which corresponds to a 16-bit signed integer range of
apporximately +/- 32000. Set the default amplitude to .3,
which is a safe value agaist saturation elsewhere in the
transmit chain.
The non-UHD maximum amplitude is unchanged at 13500.
Remove digital gain control because it's unnecessary and
causes extra load on enbedded systems.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2654 19bc5d8c-e614-43d4-8b26-e1612bc8e597
This is primarily a minor refactor with the exception
of non-recoverable errors - notably if the receive times
out - which almost always requires a reload of the FPGA.
In these cases, quit without trying as resistance is
futile.
ERROR_TIMING: Soft restart of streaming
ERROR_UNHANDLED: Benign errors
ERROR_UNRECOVERABLE: Abandon ship
Non-recoverable behaviour has not been observed in recent
builds, but may exist in older (or future) configurations.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2653 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Overnight testing shows that this shouldn't be required
in the majority of cases, but shit happens. Enabling
this forces transmit timing realignment at one minute
intervals. As a fallback method, timing slips not
caught by normal checks will be reset at the update.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2652 19bc5d8c-e614-43d4-8b26-e1612bc8e597
At startup, instead of flushing initial packets blindly,
send a stop streaming command, flush, and start. The same
procedure is used in the event of a runtime timestamp
validity error.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2651 19bc5d8c-e614-43d4-8b26-e1612bc8e597
The output of the modulator or resampler is scaled and
converted from floating point to fixed point. The scaling
factor is the leftover dB in RF attention (relative to max
transmit power), which is handled prior to the integer
conversion. This should work across all daughterboards and
non-UHD installations.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2650 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Previously this was referenced off the the ad9862
PGA with a range from 0 to -20 dB. Instead base
the attenuation factor on the maximum total RF
gain returned by the device.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2649 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Similar to the non-52 Mhz case,
589dd9091ef594ef6ef5804fbf6bfa70f3f02858
This drastically reduces underruns on the E100.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2648 19bc5d8c-e614-43d4-8b26-e1612bc8e597
On a lapses of time monotonicity (and possibly other errors),
stop and restart the receive streaming with a buffer flush
in between. This is a cleaner replacement to the previous
clock reset with that didn't attempt to stop steaming.
Signed-off-by: Thomas Tsou <ttsou@vt.edu>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@2647 19bc5d8c-e614-43d4-8b26-e1612bc8e597
kurtis.heimerl