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105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
/*
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spiffs_mock.cpp - SPIFFS HAL mock for host side testing
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Copyright © 2016 Ivan Grokhotkov
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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*/
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#include "spiffs_mock.h"
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#include "spiffs/spiffs.h"
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#include "debug.h"
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#include <flash_utils.h>
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#include <stdlib.h>
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#include <spiffs_api.h>
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extern "C"
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{
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uint32_t mock_spiffs_phys_addr = 0;
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uint32_t mock_spiffs_phys_size = 0;
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uint32_t mock_spiffs_phys_page = 0;
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uint32_t mock_spiffs_phys_block = 0;
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uint8_t* mock_spiffs_phys_data = nullptr;
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}
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FS SPIFFS(nullptr);
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SpiffsMock::SpiffsMock(size_t fs_size, size_t fs_block, size_t fs_page)
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{
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m_fs.resize(fs_size, 0xff);
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mock_spiffs_phys_addr = 0;
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mock_spiffs_phys_size = fs_size;
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mock_spiffs_phys_page = fs_page;
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mock_spiffs_phys_block = fs_block;
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mock_spiffs_phys_data = m_fs.data();
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SPIFFS = FS(FSImplPtr(new SPIFFSImpl(0, fs_size, fs_page, fs_block, 5)));
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}
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SpiffsMock::~SpiffsMock()
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{
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mock_spiffs_phys_addr = 0;
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mock_spiffs_phys_size = 0;
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mock_spiffs_phys_page = 0;
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mock_spiffs_phys_block = 0;
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mock_spiffs_phys_data = nullptr;
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SPIFFS = FS(FSImplPtr(nullptr));
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}
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/*
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spi_flash_read function requires flash address to be aligned on word boundary.
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We take care of this by reading first and last words separately and memcpy
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relevant bytes into result buffer.
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alignment: 012301230123012301230123
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bytes requested: -------***********------
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read directly: --------xxxxxxxx--------
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read pre: ----aaaa----------------
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read post: ----------------bbbb----
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alignedBegin: ^
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alignedEnd: ^
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*/
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int32_t spiffs_hal_read(uint32_t addr, uint32_t size, uint8_t *dst) {
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memcpy(dst, mock_spiffs_phys_data + addr, size);
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return SPIFFS_OK;
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}
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/*
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Like spi_flash_read, spi_flash_write has a requirement for flash address to be
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aligned. However it also requires RAM address to be aligned as it reads data
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in 32-bit words. Flash address (mis-)alignment is handled much the same way
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as for reads, but for RAM alignment we have to copy data into a temporary
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buffer. The size of this buffer is a tradeoff between number of writes required
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and amount of stack required. This is chosen to be 512 bytes here, but might
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be adjusted in the future if there are good reasons to do so.
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*/
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int32_t spiffs_hal_write(uint32_t addr, uint32_t size, uint8_t *src) {
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memcpy(mock_spiffs_phys_data + addr, src, size);
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return SPIFFS_OK;
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}
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int32_t spiffs_hal_erase(uint32_t addr, uint32_t size) {
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if ((size & (FLASH_SECTOR_SIZE - 1)) != 0 ||
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(addr & (FLASH_SECTOR_SIZE - 1)) != 0) {
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abort();
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}
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const uint32_t sector = addr / FLASH_SECTOR_SIZE;
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const uint32_t sectorCount = size / FLASH_SECTOR_SIZE;
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for (uint32_t i = 0; i < sectorCount; ++i) {
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memset(mock_spiffs_phys_data + (sector + i) * FLASH_SECTOR_SIZE, 0xff, FLASH_SECTOR_SIZE);
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}
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return SPIFFS_OK;
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}
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