circuitpython/ports/atmel-samd/common-hal/nvm/ByteArray.c

57 lines
2.2 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "common-hal/nvm/ByteArray.h"
#include "shared-bindings/nvm/ByteArray.h"
#include "hal_flash.h"
#include "supervisor/shared/stack.h"
#include <stdint.h>
#include <string.h>
uint32_t common_hal_nvm_bytearray_get_length(const nvm_bytearray_obj_t *self) {
return self->len;
}
bool common_hal_nvm_bytearray_set_bytes(const nvm_bytearray_obj_t *self,
uint32_t start_index, uint8_t *values, uint32_t len) {
// We don't use features that use any advanced NVMCTRL features so we can fake the descriptor
// whenever we need it instead of storing it long term.
struct flash_descriptor desc;
desc.dev.hw = NVMCTRL;
bool status = flash_write(&desc, (uint32_t)self->start_address + start_index, values, len) == ERR_NONE;
assert_heap_ok();
return status;
}
// NVM memory is memory mapped so reading it is easy.
void common_hal_nvm_bytearray_get_bytes(const nvm_bytearray_obj_t *self,
uint32_t start_index, uint32_t len, uint8_t *values) {
memcpy(values, self->start_address + start_index, len);
}