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67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
//
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// Copyright (C) 2015-2016 Markus Hiienkari <mhiienka@niksula.hut.fi>
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//
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// This file is part of Open Source Scan Converter project.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#include <io.h>
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#include "sdcard.h"
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#include "lcd.h"
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extern char menu_row1[LCD_ROW_LEN+1], menu_row2[LCD_ROW_LEN+1];
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alt_up_sd_card_dev *sdcard_dev;
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int read_sd_block(alt_u32 offset, alt_u32 size, alt_u8 *dstbuf)
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{
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int i;
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alt_u32 tmp;
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if ((offset % SD_BUFFER_SIZE) || (size > 512)) {
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sniprintf(menu_row1, LCD_ROW_LEN+1, "Invalid read cmd");
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menu_row2[0] = '\0';
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return -1;
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}
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if (!Read_Sector_Data((offset/SD_BUFFER_SIZE), 0)) {
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sniprintf(menu_row1, LCD_ROW_LEN+1, "SD read failure");
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menu_row2[0] = '\0';
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return -2;
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}
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// Copy buffer to SW
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for (i=0; i<size; i=i+4) {
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tmp = IORD_32DIRECT(sdcard_dev->base, i);
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*((alt_u32*)(dstbuf+i)) = tmp;
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}
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return 0;
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}
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int check_sdcard(alt_u8 *databuf)
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{
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sdcard_dev = alt_up_sd_card_open_dev(ALTERA_UP_SD_CARD_AVALON_INTERFACE_0_NAME);
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if ((sdcard_dev == NULL) || !alt_up_sd_card_is_Present()) {
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sniprintf(menu_row1, LCD_ROW_LEN+1, "No SD card det.");
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menu_row2[0] = '\0';
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return 1;
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}
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return read_sd_block(0, 512, databuf);
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}
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