URL
https://opencores.org/ocsvn/usb_fpga_1_11/usb_fpga_1_11/trunk
Subversion Repositories usb_fpga_1_11
[/] [usb_fpga_1_11/] [trunk/] [examples/] [usb-fpga-1.15/] [flashdemo/] [flashdemo.c] - Rev 6
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/*! flashdemo -- demo for Flash memory access from firmware and host software for ZTEX USB-FPGA Module 1.15 Copyright (C) 2009-2011 ZTEX GmbH. http://www.ztex.de This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 3 as published by the Free Software Foundation. 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; if not, see http://www.gnu.org/licenses/. !*/ #include[ztex-conf.h] // Loads the configuration macros, see ztex-conf.h for the available macros #include[ztex-utils.h] // include basic functions and variables // select ZTEX USB FPGA Module 1.15 as target (required for FPGA configuration) IDENTITY_UFM_1_15(10.13.0.0,0); // enable Flash support ENABLE_FLASH; // this product string is also used for identification by the host software #define[PRODUCT_STRING]["Flash demo for UFM 1.15"] __code char flash_string[] = "Hello World!"; // include the main part of the firmware kit, define the descriptors, ... #include[ztex.h] void main(void) { __xdata DWORD sector; init_USB(); // init everything if ( flash_enabled ) { flash_read_init( 0 ); // prepare reading sector 0 flash_read((__xdata BYTE*) §or, 4); // read the number of last sector flash_read_finish(flash_sector_size - 4); // dummy-read the rest of the sector + finish read operation sector++; if ( sector > flash_sectors || sector == 0 ) { sector = 1; } flash_write_init( 0 ); // prepare writing sector 0 flash_write((__xdata BYTE*) §or, 4); // write the current sector number flash_write_finish_sector(flash_sector_size - 4); // dummy-write the rest of the sector + CRC flash_write_finish(); // finish write operation flash_write_init( sector ); // prepare writing sector sector flash_write((__xdata BYTE*) flash_string, sizeof(flash_string)); // write the string flash_write_finish_sector(flash_sector_size - sizeof(flash_string)); // dummy-write the rest of the sector + CRC flash_write_finish(); // finish write operation } while (1) { } // twiddle thumbs }
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