TS-8820-pulsecounter

Each of the 14 digital inputs has an associated 16-bit pulse counter. The counters are reset at power on, and continue counting through their entire 16 bit range before rolling over. There is no mechanism to clear the counters arbitrarily.

Each counter is incremented once per transition of the associated IN channel, on the asserted edge of the signal. IN1-IN8 counters increase when a positive voltage is applied while IN9-IN14 counters increment when the pin is grounded. The pulse counters do not increment when the signal is returning to its deasserted state.

Note:

The counter logic does not include any debounce; care should be taken when using the pulse counter for a mechanical contact closure to ensure an accurate count.

The current count for any given channel can be acquired with:

ts8820ctl --counter <in>

ts8820ctl --counter 10
# Returns the output of
counter10=4