Software

• Standard CMS FEC software for the control part• We have been advised to look for a shortcut in

order to give triggers to the VFAT via the FEC– We got some “private” software, it has to be checked– If it will not work, a big effort will be needed to go the

“standard” way with TTC system

• Good hope for help on FPGA programming (2 new students from Bari)

• Man power on high-level software still a problem.

Control loop via FEC

• Juha made big progress• CMS tracker FEC software with added

functionality to read/write registers of VFAT• Tested on an emulator board capable of

reproducing the behaviour of the I2C and registers part of the VFAT

• Tested on a PCI electrical FEC• Not tested yet on the VME FEC.

– Theory says it should be no problem but it has to be verified in practice

Trigger to VFAT via FEC

• Need a new process on the emulator FPGA to separate the fast trigger signals in the control loop of the FEC– Firmware work

• I got some private software to generate triggers directly in the FEC, however I do not know if it works or not.

• Availability of an optical loop in the next days would be helpful

Readout

• Tested Fed-Kit readout with CMS-provided example program

• Successfully tried to generate data with one Fed-Kit and receive it with a second one

• Hooked up a VFAT emulator board to opto-rx, then tried to read data via Fed-Kit– Partially works, but opto-rx seems to go in an

indefinite loop and sends data without stopping– Not clear for the moment what’s the problem– Looking into firmware to understand

Conclusions

• Control loop part seems working, has to be tested on VME FEC

• Trigger generation needs firmware work + checking the available “private” FEC software

• Readout part not yet mastered.• All the ingredients should be merged in a single

software package, no idea in this moment how to proceed in this direction

• We learned that not only high-level software but also mastering firmware is necessary.