Fastinos not responding

guldin_1

We got a new control systems (kasli-soc v1.1, x2 Fastino v1.2, x3 SMA-DIO V1.4). We followed this guide. We installed nix in linux and artiq with the command:
nix profile install git+https://github.com/m-labs/artiq.git?ref=release=8

After we created the boot.bin with:
nix build --print-build-logs --impure --expr 'let fl = builtins.getFlake "git+https://git.m-labs.hk/m-labs/artiq-zynq?ref=release-[number]"; in (fl.makeArtiqZynqPackage {target="kasli_soc"; variant="standalone"; json=<path/to/description.json>;}).kasli_soc-standalone-sd'
And put it in the sd-card.
We set our own IP address and we can communicate with the kasli-soc. We can also control the TTLs (SMA-DIO) perfectly. Nevertheless, the Fastino cards do not seem to respond.
We checked the ports, log2_width, cables. All is correct.
We checked other discussions about Fastinos and we double checked that they are connected in EEM port 0 and that the ports in the kasli are correct. We also checked the initial voltage, for one Fastino, it is in the order of mV and in the other in the order of 7V (for their respective channel 0).
Has there been an update or a new requirement regarding the fastino firmware/gateware?

Thanks for helping!!

guldin_1

It seems that if one Fastino is unplugged then the other works fine. We suspect it is a power issue.

guldin_1

Just in case, if someone knows: are there specific EEM ports from the Kasli-soc that must be used for 2 fastinos (in case it is not a power supply problem
).

spaqin

EEM ports shouldn't matter on Kasli-SoC in general. Sometimes you may have gateware that fails timing or has some glitches and shuffling ports around seems to help though.

Either way, they both should have 10V on all outputs by default. See the assembly wiki: https://git.m-labs.hk/sinara-hw/assembly/src/branch/master/src/hw/zotino_fastino.md

If you have no output, it may be missing firmware (see the instructions for flashing), or a power issue like you mentioned.

guldin_1

Thank you for the reply. After some more debugging, it seems that the problem was related to the oscilloscope used to measure the output. The Fastino worked again if we unplugged that channel and restarted the crate.