m5_unit_finger_wiring.hpp

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/*
 * SPDX-FileCopyrightText: 2026 M5Stack Technology CO LTD
 *
 * SPDX-License-Identifier: MIT
 */
#ifndef M5_UNIT_FINGER_WIRING_HPP
#define M5_UNIT_FINGER_WIRING_HPP
 
#include "../unit/unit_FacesFinger.hpp"
#include <M5UnitUnified.hpp>
#include <wiring/m5_unit_unified_wiring.hpp>  // for m5::unit::wiring::defaultUartSerial()
 
#if defined(ARDUINO)
#include <HardwareSerial.h>
#endif
 
namespace m5 {
namespace unit {
namespace fpc1xxx {
namespace faces {
namespace wiring {
 
#if defined(__M5UNIFIED_HPP__)
struct FacesPins {
    int rx;           
    int tx;           
    int panel_power;  
    int touch_power;  
};
 
inline FacesPins getFacesPins()
{
    switch (M5.getBoard()) {
        case m5::board_t::board_M5Stack:  // Core / Gray / Fire (M-Bus)
            return {16, 17, 26, 5};
        default:
            return {-1, -1, -1, -1};
    }
}
 
#if defined(ARDUINO)
inline bool addFacesUART(UnitUnified& units, UnitFacesFinger& unit, const uint32_t baud = 19200,
                         const uint32_t config = SERIAL_8N1)
{
    const auto fp = getFacesPins();
    if (fp.rx < 0 || fp.tx < 0) {
        M5_LIB_LOGE("wiring: addFacesUART unsupported board=0x%02x", static_cast<int>(M5.getBoard()));
        return false;
    }
    M5_LIB_LOGI("wiring: addFacesUART board=0x%02x rx=%d tx=%d pwr=%d tch=%d baud=%lu", static_cast<int>(M5.getBoard()),
                fp.rx, fp.tx, fp.panel_power, fp.touch_power, (unsigned long)baud);
 
    auto cfg            = unit.config();
    cfg.panel_power_pin = fp.panel_power;
    cfg.touch_power_pin = fp.touch_power;
    unit.config(cfg);
 
    HardwareSerial& serial = m5::unit::wiring::defaultUartSerial();
    serial.end();
    serial.begin(baud, config, fp.rx, fp.tx);
    return units.add(unit, serial);
}
#else   // ESP-IDF native
inline bool addFacesUART(UnitUnified& units, UnitFacesFinger& unit, const uint32_t baud = 19200,
                         const m5::unit::wiring::UartConfig config = m5::unit::wiring::UartConfig::Default)
{
    const auto fp = getFacesPins();
    if (fp.rx < 0 || fp.tx < 0) {
        M5_LIB_LOGE("wiring: addFacesUART unsupported board=0x%02x", static_cast<int>(M5.getBoard()));
        return false;
    }
    M5_LIB_LOGI("wiring(ESP-IDF): addFacesUART board=0x%02x rx=%d tx=%d pwr=%d tch=%d baud=%u",
                static_cast<int>(M5.getBoard()), fp.rx, fp.tx, fp.panel_power, fp.touch_power, (unsigned)baud);
 
    auto cfg            = unit.config();
    cfg.panel_power_pin = fp.panel_power;
    cfg.touch_power_pin = fp.touch_power;
    unit.config(cfg);
 
    auto port = m5::unit::wiring::uartPortHandle(m5::unit::wiring::defaultUartPort(), static_cast<gpio_num_t>(fp.rx),
                                                 static_cast<gpio_num_t>(fp.tx), baud, config);
    if (port == UART_NUM_MAX) {
        return false;
    }
    return units.add(unit, port);
}
#endif  // ARDUINO
#endif  // __M5UNIFIED_HPP__
 
}  // namespace wiring
}  // namespace faces
}  // namespace fpc1xxx
}  // namespace unit
}  // namespace m5
#endif  // M5_UNIT_FINGER_WIRING_HPP