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torlando-tech
ac6ceca9f8
Split T-Deck firmware from microReticulum examples/lxmf_tdeck/ into its own repo. microReticulum is consumed as a git submodule dependency pinned to feat/t-deck. All include paths updated from relative symlinks to bare includes resolved via library build flags. Both tdeck (NimBLE) and tdeck-bluedroid environments compile successfully. Licensed under AGPLv3. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
121 lines
3.1 KiB
C++
121 lines
3.1 KiB
C++
// Copyright (c) 2024 microReticulum contributors
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// SPDX-License-Identifier: MIT
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#ifndef HARDWARE_TDECK_TOUCH_H
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#define HARDWARE_TDECK_TOUCH_H
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#include "Config.h"
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#ifdef ARDUINO
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#include <Arduino.h>
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#include <Wire.h>
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#include <lvgl.h>
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namespace Hardware {
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namespace TDeck {
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/**
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* GT911 Capacitive Touch Driver for T-Deck Plus
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*
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* CRITICAL: Uses POLLING MODE ONLY - interrupts cause crashes!
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*
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* The GT911 shares the I2C bus with the keyboard. It supports up to
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* 5 simultaneous touch points but typically we only use 1 for UI navigation.
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*
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* Features:
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* - Multi-touch support (up to 5 points)
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* - Polling mode with 10ms interval
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* - LVGL touchpad integration
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* - Automatic I2C address detection (0x5D or 0x14)
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*/
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class Touch {
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public:
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/**
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* Touch point data
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*/
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struct TouchPoint {
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uint16_t x;
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uint16_t y;
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uint16_t size; // Touch area size
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uint8_t track_id; // Touch tracking ID
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bool valid;
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};
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/**
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* Initialize touch controller
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* @param wire Wire interface to use (default Wire)
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* @return true if initialization successful
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*/
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static bool init(TwoWire& wire = Wire);
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/**
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* Initialize touch without LVGL (for hardware testing)
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* @param wire Wire interface to use (default Wire)
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* @return true if initialization successful
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*/
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static bool init_hardware_only(TwoWire& wire = Wire);
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/**
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* Poll touch controller for new touch data
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* Should be called periodically (e.g., every 10ms)
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* @return number of touch points detected
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*/
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static uint8_t poll();
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/**
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* Get touch point data
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* @param index Touch point index (0-4)
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* @param point Output touch point data
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* @return true if point is valid
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*/
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static bool get_point(uint8_t index, TouchPoint& point);
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/**
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* Check if screen is currently touched
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* @return true if at least one touch point detected
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*/
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static bool is_touched();
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/**
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* Get number of touch points
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* @return number of active touch points
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*/
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static uint8_t get_touch_count();
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/**
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* LVGL touchpad input callback
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* Do not call directly - used internally by LVGL
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*/
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static void lvgl_read_cb(lv_indev_drv_t* drv, lv_indev_data_t* data);
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/**
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* Get product ID (for diagnostics)
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* @return product ID string, or empty if read failed
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*/
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static String get_product_id();
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private:
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// Touch state
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static TwoWire* _wire;
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static bool _initialized;
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static uint8_t _i2c_addr;
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static TouchPoint _points[Tch::MAX_TOUCH_POINTS];
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static uint8_t _touch_count;
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static uint32_t _last_poll_time;
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// I2C communication
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static bool write_register(uint16_t reg, uint8_t value);
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static bool read_register(uint16_t reg, uint8_t* value);
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static bool read_registers(uint16_t reg, uint8_t* buffer, size_t len);
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// Initialization helpers
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static bool detect_i2c_address();
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static bool verify_product_id();
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};
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} // namespace TDeck
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} // namespace Hardware
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#endif // ARDUINO
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#endif // HARDWARE_TDECK_TOUCH_H
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