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fatfs_port.c

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  • fatfs_port.c 1.78 KiB
    /*
     * This file is part of the Micro Python project, http://micropython.org/
     *
     * The MIT License (MIT)
     *
     * Copyright (c) 2013, 2014, 2016 Damien P. George
     *
     * Permission is hereby granted, free of charge, to any person obtaining a copy
     * of this software and associated documentation files (the "Software"), to deal
     * in the Software without restriction, including without limitation the rights
     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     * copies of the Software, and to permit persons to whom the Software is
     * furnished to do so, subject to the following conditions:
     *
     * The above copyright notice and this permission notice shall be included in
     * all copies or substantial portions of the Software.
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     * THE SOFTWARE.
     */
    
    #include "py/obj.h"
    #include "lib/fatfs/ff.h"
    #include "timeutils.h"
    #include "modmachine.h"
    
    DWORD get_fattime(void) {
    
        // TODO: Optimize division (there's no HW division support on ESP8266,
        // so it's expensive).
        uint32_t secs = (uint32_t)(pyb_rtc_get_us_since_2000() / 1000000);
    
        timeutils_struct_time_t tm;
        timeutils_seconds_since_2000_to_struct_time(secs, &tm);
    
        return (((DWORD)(tm.tm_year - 1980) << 25) | ((DWORD)tm.tm_mon << 21) | ((DWORD)tm.tm_mday << 16) |
               ((DWORD)tm.tm_hour << 11) | ((DWORD)tm.tm_min << 5) | ((DWORD)tm.tm_sec >> 1));
    }