XPointDriver.h File Reference

Abstract hardware driver interface for the XPoint crosspoint matrix. More...

#include <stdint.h>

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Classes
class	XPointDriver
	Abstract base class for all XPoint hardware drivers. More...

Detailed Description

Abstract hardware driver interface for the XPoint crosspoint matrix.

Derive from XPointDriver to plug any hardware backend into XPoint:

• Direct MCU GPIO via ArduinoDirectGPIODriver
• 74HC595 shift-register chain via ArduinoShiftRegisterDriver
• MCP23017 I2C GPIO expander via MCP23017Driver
• TLC59711 12-channel 16-bit SPI PWM driver via TLC59711Driver
• Any custom relay board, I/O expander, or solid-state switch

Minimum implementation: override begin() and setNodeHardware(). setNodeLevel(), releaseNode(), and commitPhysicalUpdates() have safe defaults so simple binary drivers require no extra code.

Dual-coil latching relay protocol (RE_LATCHING_DUAL_COIL):

setNodeHardware(r, c, true)   // energize SET   coil — relay closes
setNodeHardware(r, c, false)  // energize RESET coil — relay opens
releaseNode(r, c)             // de-energize coil — called by XPoint::update()
commitPhysicalUpdates()       // flush state — called after every operation