Firmata Digital Input Pulse Channel

Description

Digital input pulse channel on a Firmata Device.

A digital input pulse channel measures the duration of input “pulses” on its associated pin. Whenever the pin transitions to high/true, the Firmata device records the pulse start time (as measured by its onboard clock). When the pin transitions back to low/false, the device subtracts the start time from the current time and reports the elapsed duration to MWorks.

Note: Firmata devices always report pulse durations in milliseconds. MWorks converts these to microseconds before assigning them to value.

Signature

iochannel/firmata_digital_input_pulse

Required Parameters

pin_number

Example

13

Input pin number

value

Variable in which to store measured pulse duration (in microseconds)

Placement

Allowed at top level:	No
Allowed parent:	Firmata Device