SUCCS Software for Uniboard / Correlator Control System

UniBoard Application agnostic NiosII CPU will run simple “O/S” access FPGA resources via memory-mapped I/O receive commands/send answers UDP/IP over the 1Gbit interface Choose FreeRTOS –tiny (3 files of C-code for multitasking core) –free allow commands from any host –fail-safe access control too complex, added value effectively 0 Starting development now Facilitating communication with FPGAs/NiosII firmware

UniBoard Application agnostic registermap of the NiosII/FPGA personality –defines location and size of a register bit + byte adressable fields supplies high-level access to registers –read/write/rmw + wait-for-pps Jonathan’s design document contains specification very strict - a big hoorah for Erlang! –only allow to write values that “fit” in a field –unforgiving error detection on responses includes UDP-enabled emulator –interprets and executes the commands on memory done - no gui Facilitating communication with FPGAs/controlling host

VEX OUTPUT DS n channels m channels CH 0 Dechannelizer DS k CH 0 CH n CH m ROTClock UniBoard InputFPGA OutputFPGA UniBoard InputFPGA OutputFPGA ControlSW MySQL Model Server

EVN Correlator App specific translate existing dataformats to this subset of VDIF –Mk5A (MkIV tape-format-on-a-disk), Mk5B, multi-channel VDIF –recoding requires fast bit-manipulation S/W reference implementation in Erlang (done) –slow, very strict, produces correct output python program generating optimized C version (50%) –verified for one tracklayout –primarily to ascertain feasability running on commodity hardware –development halted since nobody accepts VDIF data must first be shown to correlate Single channel VDIF input

EVN Correlator App specific observing parameters seeded from VEX file –map VEX to SQL schema (80% done) –use official (yacc) grammar to build Erlang parser (done) needs lexer and rule-based code to take appropriate action (0%) –accomodate updated versions of parameters (50%) full database schema must include –logging/accountability (10%) –non-VEX parameters like e-VLBI settings intelligent tools for manipulating the database (0%) waiting for database server... Correlation driven from database