Implement separate pulse counters for TTL and RS-485 inputs
The pulse counters are counting on an input pulse on the front-panel TTL
input and also when receiving it on the RTM RS-485 input (it OR's the
two).
This was as we believed that either one of the inputs would be connected
in an installation, but not both at the same time. However, it was found
out that the OR function may be useful in some installations. For
diagnosis purposes it would therefore be better to have separate
counters to know where pulses are coming from.
- Study if separate counters are needed (to be implemented) and also one after the OR (like currently implemented) or if only separate counters are enough.
- Study also if the Pulse time-tagging ring buffer and Latest Timestamp registers should be expanded.
Is the same as https://www.ohwr.org/work_packages/1308 of the TTL-BLO card.