77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2019 Nick Moore 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 "py/runtime.h"
|
|
#include "common-hal/nvm/ByteArray.h"
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "peripherals/nrf/nvm.h"
|
|
|
|
uint32_t common_hal_nvm_bytearray_get_length(nvm_bytearray_obj_t *self) {
|
|
return self->len;
|
|
}
|
|
|
|
static bool write_page(uint32_t page_addr, uint32_t offset, uint32_t len, uint8_t *bytes) {
|
|
// Write a whole page to flash, buffering it first and then erasing and rewriting
|
|
// it since we can only clear a whole page at a time.
|
|
|
|
if (offset == 0 && len == FLASH_PAGE_SIZE) {
|
|
return nrf_nvm_safe_flash_page_write(page_addr, bytes);
|
|
} else {
|
|
uint8_t buffer[FLASH_PAGE_SIZE];
|
|
memcpy(buffer, (uint8_t *)page_addr, FLASH_PAGE_SIZE);
|
|
memcpy(buffer + offset, bytes, len);
|
|
return nrf_nvm_safe_flash_page_write(page_addr, buffer);
|
|
}
|
|
}
|
|
|
|
bool common_hal_nvm_bytearray_set_bytes(nvm_bytearray_obj_t *self,
|
|
uint32_t start_index, uint8_t* values, uint32_t len) {
|
|
|
|
uint32_t address = (uint32_t) self->start_address + start_index;
|
|
uint32_t offset = address % FLASH_PAGE_SIZE;
|
|
uint32_t page_addr = address - offset;
|
|
|
|
while (len) {
|
|
uint32_t write_len = MIN(len, FLASH_PAGE_SIZE - offset);
|
|
if (!write_page(page_addr, offset, write_len, values)) {
|
|
return false;
|
|
}
|
|
len -= write_len;
|
|
values += write_len;
|
|
page_addr += FLASH_PAGE_SIZE;
|
|
offset = 0;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void common_hal_nvm_bytearray_get_bytes(nvm_bytearray_obj_t *self,
|
|
uint32_t start_index, uint32_t len, uint8_t* values) {
|
|
memcpy(values, self->start_address + start_index, len);
|
|
}
|