portapack-mayhem/firmware/application/sd_card.cpp
2016-02-22 14:18:20 -08:00

77 lines
1.7 KiB
C++

/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of PortaPack.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "sd_card.hpp"
#include <hal.h>
#include "ff.h"
namespace sd_card {
namespace {
bool card_present = false;
Status status_ { Status::NotPresent };
FATFS fs;
FRESULT mount() {
return f_mount(&fs, "", 0);
}
} /* namespace */
Signal<Status> status_signal;
void poll_inserted() {
const auto card_present_now = sdc_lld_is_card_inserted(&SDCD1);
if( card_present_now != card_present ) {
card_present = card_present_now;
Status new_status { card_present ? Status::Present : Status::NotPresent };
if( card_present ) {
if( sdcConnect(&SDCD1) == CH_SUCCESS ) {
if( mount() == FR_OK ) {
new_status = Status::Mounted;
} else {
new_status = Status::MountError;
}
} else {
new_status = Status::ConnectError;
}
} else {
sdcDisconnect(&SDCD1);
}
status_ = new_status;
status_signal.emit(status_);
}
}
Status status() {
return status_;
}
} /* namespace sd_card */