st-4-esp32/include/ST4Pin.h
Ryan Malloy 4c91fd4811 ESP32 ST-4 autoguider library with thread-safe pulse guiding
Port of arduino-st4 (Kevin Ferrare) to ESP32/PlatformIO with:
- FreeRTOS mutex protection at every layer (Pin, Axis, Pulse, Controller)
- Hardware timer pulse guiding with ISR-safe deferred stop pattern
- Backward-compatible serial protocol (57600 baud, #-terminated)
- Extended commands: PULSE, POS?, SYNC, STATUS?, VERSION?
- Optional WiFi/WebSocket control (gated by ST4_WIFI_ENABLED)
- Dead-reckoning position tracker using esp_timer microsecond precision

All 4 examples build clean against esp32dev target.
2026-02-17 19:46:03 -07:00

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// SPDX-License-Identifier: LGPL-3.0-or-later
// ST4-ESP32: Single GPIO pin abstraction with configurable active logic
#pragma once
#include <Arduino.h>
#include "ST4Types.h"
class ST4Pin {
int pin_;
ST4PinLogic logic_;
bool active_;
public:
ST4Pin();
void begin(int pin, ST4PinLogic logic = ST4PinLogic::ACTIVE_HIGH);
void activate();
void deactivate();
bool isActive() const;
int pin() const;
};