mirror of https://github.com/ARMmbed/mbed-os.git
120 lines
2.3 KiB
C++
120 lines
2.3 KiB
C++
/* Copyright (c) 2020 ARM Limited
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "EmulatedSD.h"
|
|
#include <stdio.h>
|
|
|
|
class EmulatedSD_Private {
|
|
public:
|
|
~EmulatedSD_Private() {
|
|
if (fs) {
|
|
fclose(fs);
|
|
}
|
|
}
|
|
const char *path;
|
|
FILE *fs;
|
|
bd_size_t size;
|
|
};
|
|
|
|
EmulatedSD::EmulatedSD(const char *path)
|
|
{
|
|
_p = new EmulatedSD_Private;
|
|
_p->path = path;
|
|
}
|
|
|
|
EmulatedSD::~EmulatedSD()
|
|
{
|
|
delete _p;
|
|
}
|
|
|
|
int EmulatedSD::init()
|
|
{
|
|
_p->fs = fopen(_p->path, "r+");
|
|
if (!_p->fs) {
|
|
perror("fdopen():");
|
|
return -1;
|
|
}
|
|
if (fseek(_p->fs, 0, SEEK_END)) {
|
|
perror("fseek()");
|
|
fclose(_p->fs);
|
|
_p->fs = nullptr;
|
|
return -1;
|
|
}
|
|
_p->size = ftell(_p->fs);
|
|
rewind(_p->fs);
|
|
return 0;
|
|
}
|
|
|
|
int EmulatedSD::deinit()
|
|
{
|
|
fclose(_p->fs);
|
|
_p->fs = nullptr;
|
|
}
|
|
|
|
int EmulatedSD::read(void *buffer, bd_addr_t addr, bd_size_t size)
|
|
{
|
|
if (!_p->fs) {
|
|
return -1;
|
|
}
|
|
if (fseek(_p->fs, addr, SEEK_SET)) {
|
|
perror("fseek()");
|
|
return -1;
|
|
}
|
|
size_t r = fread(buffer, size, 1, _p->fs);
|
|
if (r < 1) {
|
|
perror("fread()");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int EmulatedSD::program(const void *buffer, bd_addr_t addr, bd_size_t size)
|
|
{
|
|
if (!_p->fs) {
|
|
return -1;
|
|
}
|
|
if (fseek(_p->fs, addr, SEEK_SET)) {
|
|
perror("fseek()");
|
|
return -1;
|
|
}
|
|
size_t r = fwrite(buffer, size, 1, _p->fs);
|
|
if (r < 1) {
|
|
perror("fread()");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
bd_size_t EmulatedSD::get_read_size() const
|
|
{
|
|
return 512;
|
|
}
|
|
bd_size_t EmulatedSD::get_program_size() const
|
|
{
|
|
return 512;
|
|
}
|
|
bd_size_t EmulatedSD::size() const
|
|
{
|
|
if (!_p->fs) {
|
|
return -1;
|
|
}
|
|
return _p->size;
|
|
}
|
|
const char *EmulatedSD::get_type() const
|
|
{
|
|
return "SD";
|
|
}
|