84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
////////////////////////////////////////////////////////////////////////////
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//
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// This file is part of DueFlash
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//
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// Copyright (c) 2013 Pansenti, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to use,
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// copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
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// Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#include "DueFlash.h"
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DueFlash::DueFlash()
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{
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uint32_t retCode;
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/* Initialize flash: 6 wait states for flash writing. */
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retCode = flash_init(FLASH_ACCESS_MODE_128, 6);
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if (retCode != FLASH_RC_OK) {
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_FLASH_DEBUG("Flash init failed\n");
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}
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}
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boolean DueFlash::write(uint32_t *flashStart, uint32_t *data, uint32_t dataLength)
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{
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uint32_t retCode;
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uint32_t byteLength = dataLength * sizeof(uint32_t);
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if ((uint32_t)flashStart < IFLASH1_ADDR) {
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_FLASH_DEBUG("Flash write address too low\n");
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return false;
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}
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if ((uint32_t)flashStart >= (IFLASH1_ADDR + IFLASH1_SIZE)) {
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_FLASH_DEBUG("Flash write address too high\n");
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return false;
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}
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if (((uint32_t)flashStart & 3) != 0) {
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_FLASH_DEBUG("Flash start address must be on four byte boundary\n");
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return false;
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}
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// Unlock page
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retCode = flash_unlock((uint32_t)flashStart, (uint32_t)flashStart + byteLength - 1, 0, 0);
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if (retCode != FLASH_RC_OK) {
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_FLASH_DEBUG("Failed to unlock flash for write\n");
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return false;
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}
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// write data
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retCode = flash_write((uint32_t)flashStart, data, byteLength, 1);
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if (retCode != FLASH_RC_OK) {
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_FLASH_DEBUG("Flash write failed\n");
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return false;
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}
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// Lock page
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retCode = flash_lock((uint32_t)flashStart, (uint32_t)flashStart + byteLength - 1, 0, 0);
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if (retCode != FLASH_RC_OK) {
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_FLASH_DEBUG("Failed to lock flash page\n");
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return false;
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}
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return true;
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}
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