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1.0 KiB
1.0 KiB
Digital Input
- Direct digital input on selected pins of a port
- Pin change events
Pins are described using the packed format (see UNIT_DO.md)
Commands
READ (0x00)
Read all pins.
Response:
- u16 - pin states (packed)
ARM_SINGLE (0x01)
Arm a pin or pins for a change detection. The active edge is defined in the unit settings. The pins are dis-armed again after a detected event.
Request:
- u16 - pins to arm (packed)
ARM_AUTO (0x02)
Arm a pin or pins for a change detection with automatic re-arm. The active edge is defined in the unit settings.
Request:
- u16 - pins to arm (packed)
DISARM (0x03)
Disable change detection on the selected pins.
Request:
- u16 - pins to dis-arm (packed)
Events
PIN_CHANGE (0x00)
External interrupt, pin change(s) detected. Reports which pins caused the event (can be multiple), and the entire unit's input captured right after the event.
Payload:
- u16 - pins that caused the event (packed)
- u16 - port snapshot at the time of the event (packed)