Aaron Fischer
f24858d162
This step seems bold, but is saves us so much hassle. Even better, we have a reliable codebase, with all the dependencies (and their versions) we need in order to build the project. If a library got an update, we can replace it inplace if the code is still compatible.
100 lines
3.6 KiB
C
100 lines
3.6 KiB
C
/* This source file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */
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/*! \page License
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* Copyright (C) 2009, H&D Wireless AB All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of H&D Wireless AB may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY H&D WIRELESS AB ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND
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* SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <string.h>
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#include "compiler.h"
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#include "preprocessor.h"
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#include "board.h"
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#include "power_clocks_lib.h"
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#include "gpio.h"
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#include "spi.h"
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#include "conf_at45dbx.h"
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#include "at45dbx.h"
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#include "clocks.h"
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void flash_init(void)
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{
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static const gpio_map_t AT45DBX_SPI_GPIO_MAP = {
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{ AT45DBX_SPI_SCK_PIN, AT45DBX_SPI_SCK_FUNCTION },
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{ AT45DBX_SPI_MISO_PIN, AT45DBX_SPI_MISO_FUNCTION },
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{ AT45DBX_SPI_MOSI_PIN, AT45DBX_SPI_MOSI_FUNCTION },
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{ AT45DBX_SPI_NPCS2_PIN, AT45DBX_SPI_NPCS2_FUNCTION },
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};
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spi_options_t spiOptions = {
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.reg = AT45DBX_SPI_FIRST_NPCS,
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.baudrate = AT45DBX_SPI_MASTER_SPEED,
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.bits = AT45DBX_SPI_BITS,
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.spck_delay = 0,
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.trans_delay = 0,
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.stay_act = 1,
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.spi_mode = 0,
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.modfdis = 1
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};
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gpio_enable_module(AT45DBX_SPI_GPIO_MAP,
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sizeof(AT45DBX_SPI_GPIO_MAP) /
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sizeof(AT45DBX_SPI_GPIO_MAP[0]));
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spi_initMaster(AT45DBX_SPI, &spiOptions);
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spi_selectionMode(AT45DBX_SPI, 0, 0, 0);
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spi_enable(AT45DBX_SPI);
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/* put up flash reset pin */
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gpio_set_gpio_pin(AT45DBX_CHIP_RESET);
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at45dbx_init(spiOptions, FPBA_HZ);
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}
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void flash_write(U32 addr, const U8* buf, U32 len)
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{
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U32 sector = addr / AT45DBX_SECTOR_SIZE;
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U32 i;
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Assert(addr % AT45DBX_SECTOR_SIZE == 0);
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at45dbx_write_open(sector);
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for (i = 0; i < len; i++)
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at45dbx_write_byte(buf[i]);
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at45dbx_write_close();
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}
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void flash_read(U32 addr, U8* buf, U32 len)
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{
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U32 sector = addr / AT45DBX_SECTOR_SIZE;
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U32 i;
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Assert(addr % AT45DBX_SECTOR_SIZE == 0);
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at45dbx_read_open(sector);
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for (i = 0; i < len; i++)
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buf[i] = at45dbx_read_byte();
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at45dbx_read_close();
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}
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