General YARR Documentation and Applications
YARR readout for ITkPixV1.1 Quad module at SLAC
YARR Test Bench for Testing and GUI Dev
- Contact: sanha@stanford.edu
SLAC Local Setups
There are two There are three YARR PC's set up in Building 084 at SLAC currently:
(1) Larger YARR PC with 2 1 Spec PCIe cards in Student office
(2) YARR PC with 1 Spec PCIe card in Lab C
card in B33 Reception area (node name BigYARRPC_Eth)
(2) Smaller HyperX/noctua/Corsair (3) "FELIX" workstation with 1Spec 1 Spec PCIe card in Lab C. (
...
(2) YARR PC with 1 Spec PCIe card in Lab C
(3) "FELIX" Workstation with 1 Spec PCIe card in Lab C
This was set-up using an old "FELIX" workstation from Matthias' office (Zijun & Sanha, April 21st, 2021). It is currently set up to run a RD53A module—the one Zijun has worked on previously.
node name spectest)
...
If you get this error in YARR even after flashing the firmware:
[18:46:45:565][ info ][ specComTest ]: Init spec
[18:46:45:565][ info ][ SpecCom ]: Opening SPEC with id #0
[18:46:45:565][critical][ SpecCom ]: Error during initilisation: Open failed
[18:46:45:565][critical][ SpecCom ]: Fatal Error! Aborting!
It is probably due to an issue with permissions. Just do:
sudo chmod 666 /dev/spec0
or write a udev rules file for a more permanent solution:
echo 'KERNEL=="spec[0-9]*", MODE="666"' | sudo tee -a /etc/udev/rules.d/99-spec.rules
...