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psi46 / pxar

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DTB clock and pXar APIs ... #445

Closed dinardo closed 6 years ago

dinardo commented 7 years ago

Dear Experts, I would like to use DTB with external clock. I'm using the latest greatest FW (4.6) and latest greatest SW version (4.7). Apparently the possibility to use an external clock is broken since sometime ago. (1) Do you guys know when this feature will be put back in place ?

(2) I would like to use the API method to stretch the clock: setClockStretch(src, delay, width)

(A) Is this function working ? (B) What the meaning of the three parameters ? (C) What are the units of the three parameters ? seconds, milliseconds, etc ...

Many thanks for your help. Kind regards,

simonspa commented 7 years ago

Hi @dinardo

(1) It is broken since summer 2015 and Beat hasn't found the time to repair it. I won't bet on that happening before the detector is in.

(2) Not sure, never used it. Original author is @roberts42 in 6b4e1511222b4246de8d49113760a086fd1ba635

Cheers

simonspa commented 7 years ago

corresponding firmware method is here: https://github.com/psi46/pixel-dtb-firmware/blob/master/software/dtb_expert/pixel_dtb.cc#L407 Would be nice if you add the missing documentation once you found out how it works.