160 lines
4.3 KiB
C++
160 lines
4.3 KiB
C++
// Copyright 2015-2016 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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//
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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 "vfs_api.h"
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extern "C" {
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#include "esp_vfs_fat.h"
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#include "diskio.h"
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#include "diskio_wl.h"
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#include "vfs_fat_internal.h"
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}
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#include "FFat.h"
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using namespace fs;
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F_Fat::F_Fat(FSImplPtr impl)
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: FS(impl)
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{}
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const esp_partition_t *check_ffat_partition(const char* label)
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{
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const esp_partition_t* ck_part = esp_partition_find_first(
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ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_FAT, label);
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if (!ck_part) {
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log_e("No FAT partition found with label %s", label);
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return NULL;
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}
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return ck_part;
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}
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bool F_Fat::begin(bool formatOnFail, const char * basePath, uint8_t maxOpenFiles, const char * partitionLabel)
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{
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if(_wl_handle){
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log_w("Already Mounted!");
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return true;
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}
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if (!check_ffat_partition(partitionLabel)) return false;
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esp_vfs_fat_mount_config_t conf = {
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.format_if_mount_failed = formatOnFail,
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.max_files = maxOpenFiles
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};
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esp_err_t err = esp_vfs_fat_spiflash_mount(basePath, partitionLabel, &conf, &_wl_handle);
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if(err){
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log_e("Mounting FFat partition failed! Error: %d", err);
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return false;
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}
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_impl->mountpoint(basePath);
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return true;
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}
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void F_Fat::end()
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{
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if(_wl_handle){
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esp_err_t err = esp_vfs_fat_spiflash_unmount(_impl->mountpoint(), _wl_handle);
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if(err){
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log_e("Unmounting FFat partition failed! Error: %d", err);
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return;
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}
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_wl_handle = 0;
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_impl->mountpoint(NULL);
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}
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}
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bool F_Fat::format(bool full_wipe, char* partitionLabel)
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{
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esp_err_t result;
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bool res = true;
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if(_wl_handle){
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log_w("Already Mounted!");
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return false;
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}
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wl_handle_t temp_handle;
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// Attempt to mount to see if there is already data
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const esp_partition_t *ffat_partition = check_ffat_partition(partitionLabel);
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if (!ffat_partition){
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log_w("No partition!");
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return false;
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}
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result = wl_mount(ffat_partition, &temp_handle);
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if (result == ESP_OK) {
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// Wipe disk- quick just wipes the FAT. Full zeroes the whole disk
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uint32_t wipe_size = full_wipe ? wl_size(temp_handle) : 16384;
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wl_erase_range(temp_handle, 0, wipe_size);
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wl_unmount(temp_handle);
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} else {
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res = false;
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log_w("wl_mount failed!");
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}
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// Now do a mount with format_if_fail (which it will)
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esp_vfs_fat_mount_config_t conf = {
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.format_if_mount_failed = true,
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.max_files = 1
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};
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result = esp_vfs_fat_spiflash_mount("/format_ffat", partitionLabel, &conf, &temp_handle);
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esp_vfs_fat_spiflash_unmount("/format_ffat", temp_handle);
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if (result != ESP_OK){
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res = false;
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log_w("esp_vfs_fat_spiflash_mount failed!");
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}
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return res;
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}
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size_t F_Fat::totalBytes()
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{
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FATFS *fs;
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DWORD free_clust, tot_sect, sect_size;
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BYTE pdrv = ff_diskio_get_pdrv_wl(_wl_handle);
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char drv[3] = {(char)(48+pdrv), ':', 0};
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if ( f_getfree(drv, &free_clust, &fs) != FR_OK){
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return 0;
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}
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tot_sect = (fs->n_fatent - 2) * fs->csize;
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sect_size = CONFIG_WL_SECTOR_SIZE;
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return tot_sect * sect_size;
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}
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size_t F_Fat::freeBytes()
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{
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FATFS *fs;
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DWORD free_clust, free_sect, sect_size;
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BYTE pdrv = ff_diskio_get_pdrv_wl(_wl_handle);
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char drv[3] = {(char)(48+pdrv), ':', 0};
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if ( f_getfree(drv, &free_clust, &fs) != FR_OK){
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return 0;
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}
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free_sect = free_clust * fs->csize;
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sect_size = CONFIG_WL_SECTOR_SIZE;
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return free_sect * sect_size;
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}
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bool F_Fat::exists(const char* path)
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{
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File f = open(path, "r");
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return (f == true) && !f.isDirectory();
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}
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bool F_Fat::exists(const String& path)
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{
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return exists(path.c_str());
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}
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F_Fat FFat = F_Fat(FSImplPtr(new VFSImpl()));
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