Atmosphere/stratosphere/boot/source/boot_rtc_driver.cpp

/*
 * Copyright (c) 2018-2020 Atmosphère-NX
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#include "boot_rtc_driver.hpp"

namespace ams::boot {

    Result RtcDriver::ReadRtcRegister(u8 *out, u8 address) {
        const u8 update_addr = 0x04;
        const u8 update_val = 0x10;
        R_TRY(WriteI2cRegister(this->i2c_session, &update_val, sizeof(update_val), &update_addr, sizeof(update_addr)));
        svcSleepThread(16'000'000ul);
        return ReadI2cRegister(this->i2c_session, out, sizeof(*out), &address, sizeof(address));
    }

    Result RtcDriver::GetRtcIntr(u8 *out) {
        const u8 addr = 0x00;
        return ReadI2cRegister(this->i2c_session, out, sizeof(*out), &addr, sizeof(addr));
    }

    Result RtcDriver::GetRtcIntrM(u8 *out) {
        const u8 addr = 0x01;
        return this->ReadRtcRegister(out, addr);
    }

}