e542b7a920
Makes spiffs component runnable on host. Depends on the host library build of flash emulator. Includes a basic sanity test of mounting a volume, opening a file, writing to the file, reading the file, closing the file and unmounting volume.
131 lines
3.7 KiB
C++
131 lines
3.7 KiB
C++
// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "Flash_Emulator.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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Flash_Emulator::Flash_Emulator(size_t size, size_t sector_sise, size_t min_size)
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{
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this->reset_count = 0x7fffffff;
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this->size = size;
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this->sector_sise = sector_sise;
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this->min_size = min_size;
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this->buff = (uint8_t *)malloc(this->size);
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this->access_count = new uint32_t[this->size / this->sector_sise];
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memset(this->access_count, 0, this->size / this->sector_sise * sizeof(uint32_t));
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memset(this->buff, 1, this->size);
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}
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size_t Flash_Emulator::chip_size()
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{
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return this->size;
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}
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size_t Flash_Emulator::sector_size()
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{
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return this->sector_sise;
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}
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esp_err_t Flash_Emulator::erase_sector(size_t sector)
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{
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esp_err_t result = ESP_OK;
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if ((this->reset_count != 0x7fffffff) && (this->reset_count != 0)) {
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this->reset_count--;
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}
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if (this->reset_count <= 0) {
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result = ESP_FAIL;
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return result;
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}
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memset(&this->buff[sector * this->sector_sise], -1, this->sector_sise);
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this->access_count[sector]++;
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return result;
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}
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uint32_t Flash_Emulator::get_access_minmax()
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{
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uint32_t min = INT32_MAX;
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uint32_t max = 0;
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for (size_t i = 0; i < (this->size / this->sector_sise) - 2; i++) {
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if (this->access_count[i] < min) {
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min = this->access_count[i];
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}
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if (this->access_count[i] > max) {
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max = this->access_count[i];
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}
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}
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return max - min;
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}
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esp_err_t Flash_Emulator::erase_range(size_t start_address, size_t size)
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{
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esp_err_t result = ESP_OK;
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uint32_t start_sector = start_address / this->sector_sise;
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uint32_t count = (size + this->sector_sise - 1) / this->sector_sise;
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for (size_t i = 0; i < count; i++) {
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result |= this->erase_sector(start_sector + i);
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}
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return result;
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}
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esp_err_t Flash_Emulator::write(size_t dest_addr, const void *src, size_t size)
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{
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esp_err_t result = ESP_OK;
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if ((size % this->min_size) != 0) {
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result = ESP_ERR_INVALID_SIZE;
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return result;
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}
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if ((dest_addr % this->min_size) != 0) {
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result = ESP_ERR_INVALID_SIZE;
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return result;
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}
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if ((this->reset_count != 0x7fffffff) && (this->reset_count != 0)) {
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this->reset_count--;
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}
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if (this->reset_count <= 0) {
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result = ESP_FAIL;
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return result;
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}
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memcpy(&this->buff[dest_addr], src, size);
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return result;
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}
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esp_err_t Flash_Emulator::read(size_t src_addr, void *dest, size_t size)
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{
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esp_err_t result = ESP_OK;
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if (this->reset_count <= 0) {
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result = ESP_FAIL;
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return result;
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}
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memcpy(dest, &this->buff[src_addr], size);
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return result;
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}
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Flash_Emulator::~Flash_Emulator()
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{
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free(this->buff);
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delete this->access_count;
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}
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void Flash_Emulator::SetResetCount(uint32_t count)
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{
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this->reset_count = count;
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}
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void Flash_Emulator::SetResetSector(size_t sector)
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{
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this->reset_sector = sector;
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}
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