4Links Diagnostic SpaceWire Interface - Spwio Event Waveform Defaults; Spwio Event Waveform Examples

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therSpaceLink_EW_enable_reporting() C-language API function. See the respective SpWIO or C-
language Application Programming Interface manual for details.
Each SpaceWire port generates an event when one or more of the following have been enabled and subsequently
occur:
11.1.1 SpWIO Event Waveform Defaults
The default for SpWIO is to cause events when SpaceWire errors are seen (i.e. incorrect token sequences, parity
errors or flow-control errors), and to generate event waveform triggers just for the SpaceWire port on which an
error was seen. No SMA pulses are generated on J5-J6 by default.
11.1.2 SpWIO Event Waveform Examples
In addition to the default Error Waveform triggering, it is possible to supply the /es and /ew command-line
parameters to SpWIO, which apply to all ports, or the inline versions of these commands can be supplied after
selecting a particular port to affect just that port. Remember that the flags for /es and /ew are supplied
directly, over-writing the previous setting, or as delta-adjustments (using + and -).
The command-line parameters have the following effects:
/ew t
Create event triggers when SpaceWire time-codes are seen on SpaceWire ports 1 - 8, and
delete any previous events.
/ew +t
Create additional event triggers when SpaceWire time-codes are seen on SpaceWire ports 1 - 8,
leaving any previous event triggers unchanged.
/ew -t
Remove event triggers when SpaceWire time-codes are seen on SpaceWire ports 1 - 8, if they
were enabled previously.
/es 14
Trigger waveforms on all eight SpaceWire ports when an event is seen on port 1 or port 4.
SpWIO /ew flag
DSI option
Description
none
An event flag is embedded in the transmit data stream - i.e. the user can
trigger an event at some specified point in a transmitted data stream.
s
The first byte of a packet is received.
m
Intermediate bytes of received packets arrive.
e
The end-of-packet marker, EOP, is received.
g
The error-end-of-packet marker, EEP, is received.
t
Time codes are received.
a
ER
The ECSS error ESC-ESC is observed.
b
ER
The ECSS error ESC-EOP is observed.
c
ER
The ECSS error ESC-EEP is observed.
f
ER
Flow-control tokens are received.
p
ER
The ECSS Parity error is observed.
v
ER
More data is received than flow-control credit permits.
w
ER
Too many flow-control tokens are received.
x
ER
The ECSS Timeout (disconnect) error is observed.