User manual

MEX ASPERA-3
Ref.:
ME-ASP-MA-0002
Issue:
Issue 1 Rev. 4
Date:
15/2/2002
Page:
Page 31 of 58
ASPERA-3 EGSE User Manual
IFSI
CNR
5 DSP internal buffer
Default N = 3
TPOLL
1 Nsec Set TM polling every Nsec. If 0 no polling
SCSEND
1 0/1 Send to scoe telemetry sent only to dms. Default 0 (do
not send)
SCARCH
1 0/1 Archive dms telemetry. Default 1 (Archive)
TXCTX
1 apid Send the Context to ASPERA (apid)
The following commands are sent to the DSP board. Code here MUST match those in the DSP program
(MEXGSE).
ID N. Par Param. Description
RST 0 Reset DSP pointers
POKE n Start Add,
P1, P2, ..
Write on DSP memory starting from “Start Add” P1,
P2 …
PEEK 2 Start Add, N Read from DSP memory starting from “Start Add” N
words and transmit in TL as Pkt Type=255, sType=0
FUN4 1 Utility
STIMER 2 R1, R2 Set Timer. 2 parameters: R1,R2
INTON 2 rgN,Dat On Off interrupt N
TLC n rgN Send n TC
TLM 1 Nw Ask for Nw TM words and transmit to SCOE as Pkt
Type=255, sType=2
TLMRX 1 Rx Ask for Nw=*Rx TM words
TMON 1 0/1 Suspend/restart current Telemetry request
ADREG 1 Reg Modify a AC01 Register (MSByte= reg num)
ADC 0 Read in ADBUFS all ADC channels Inhibit interrupt
(SL) for .5ms. To get value use peek at ADBUFS
TADC
1 T Read the 8 ADC channels every t *122us and
transmit to SCOE as Pkt Type=255, sType=1
RELAY
2 RN ,t Pulse to relay rN [0..3] for t time in unit of 122 us.
Relay # 0 => Main 28V On
“ “ 1 => Main 28V Off
“ “ 2 => Redundant 28V On
“ “ 3 => Redundant 28V Off
STIM
0 Send to ASPERA Time Packet. Time may be set
with poke at TIMBUFS.
PKT
n Type,
Subtype,
Param…
Send Packet TC
The most important commands in this block are the TPOLL and PKT command. The following
commands block sends packet Type 3, sub type 5, SID 10 (enable HK packet generation) to the
instrument APID=61 requesting acceptance acknowledge without execution acknowledge and initiate
the telemetry polling every 2 seconds:
acka 1 ; until notified by a new ACKA cmd, all commands
; require acceptance acknowledge
acke 0 ; until notified by a new ACKE cmd, execution
; acknowledge is not requested
pkt 3 5 10 ; sends packet Type 3, sub type 5, SID 10 (enable
; HK packet generation)