79 lines
2.9 KiB
C
79 lines
2.9 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Nick Moore for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "common-hal/nvm/ByteArray.h"
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#include <stdio.h>
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#include <string.h>
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#include "peripherals/nrf/nvm.h"
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uint32_t common_hal_nvm_bytearray_get_length(nvm_bytearray_obj_t *self) {
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return self->len;
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}
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static void write_page(uint32_t page_addr, uint32_t offset, uint32_t len, uint8_t *bytes) {
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// Write a whole page to flash, buffering it first and then erasing and rewriting
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// it since we can only clear a whole page at a time.
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bool status;
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if (offset == 0 && len == FLASH_PAGE_SIZE) {
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status = nrf_nvm_safe_flash_page_write(page_addr, bytes);
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} else {
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uint8_t buffer[FLASH_PAGE_SIZE];
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memcpy(buffer, (uint8_t *)page_addr, FLASH_PAGE_SIZE);
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memcpy(buffer + offset, bytes, len);
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status = nrf_nvm_safe_flash_page_write(page_addr, buffer);
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}
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if (!status) {
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mp_raise_OSError_msg(translate("Flash write failed"));
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}
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}
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bool common_hal_nvm_bytearray_set_bytes(nvm_bytearray_obj_t *self,
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uint32_t start_index, uint8_t* values, uint32_t len) {
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uint32_t address = (uint32_t) self->start_address + start_index;
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uint32_t offset = address % FLASH_PAGE_SIZE;
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uint32_t page_addr = address - offset;
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while (len) {
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uint32_t write_len = MIN(len, FLASH_PAGE_SIZE - offset);
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write_page(page_addr, offset, write_len, values);
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len -= write_len;
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values += write_len;
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page_addr += FLASH_PAGE_SIZE;
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offset = 0;
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}
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return true;
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}
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void common_hal_nvm_bytearray_get_bytes(nvm_bytearray_obj_t *self,
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uint32_t start_index, uint32_t len, uint8_t* values) {
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memcpy(values, self->start_address + start_index, len);
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}
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