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/*
* 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 "stm32f4xx_hal.h"
#include "supervisor/shared/stack.h"
#include <stdint.h>
#include <string.h>
uint32_t common_hal_nvm_bytearray_get_length(nvm_bytearray_obj_t *self) {
return self->len;
}
bool common_hal_nvm_bytearray_set_bytes(nvm_bytearray_obj_t *self,
uint32_t start_index, uint8_t* values, uint32_t len) {
// Copy flash to buffer
uint8_t buffer[self->len];
memcpy(buffer, self->start_address, self->len);
// Set bytes in buffer
memmove(buffer + start_index, values, len);
// Erase flash sector
HAL_FLASH_Unlock();
__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGSERR );
FLASH_Erase_Sector(CIRCUITPY_INTERNAL_NVM_SECTOR, VOLTAGE_RANGE_3);
// Write bytes to flash
uint32_t i;
uint32_t flash_addr = (uint32_t)self->start_address;
for (i = 0; i < self->len; i++, flash_addr++) {
if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, flash_addr, buffer[i]) != HAL_OK) {
HAL_FLASH_Lock();
return false;
}
}
// Finish up
HAL_FLASH_Lock();
return true;
}
// NVM memory is memory mapped so reading it is easy.
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);
}
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