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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 microDev
*
* 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 "py/runtime.h"
#include "nvs_flash.h"
uint32_t common_hal_nvm_bytearray_get_length(nvm_bytearray_obj_t *self) {
return self->len;
}
static void get_nvs_handle(nvs_handle_t *nvs_handle) {
// Initialize NVS
esp_err_t err = nvs_flash_init();
if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND) {
// NVS partition was truncated and needs to be erased
// Retry nvs_flash_init
ESP_ERROR_CHECK(nvs_flash_erase());
err = nvs_flash_init();
}
ESP_ERROR_CHECK(err);
// Open NVS handle
if (nvs_open("CPY", NVS_READWRITE, nvs_handle) != ESP_OK) {
mp_raise_RuntimeError(translate("NVS Error"));
}
}
bool common_hal_nvm_bytearray_set_bytes(nvm_bytearray_obj_t *self,
uint32_t start_index, uint8_t *values, uint32_t len) {
char index[9];
// start nvs
nvs_handle_t handle;
get_nvs_handle(&handle);
// stage flash changes
for (uint32_t i = 0; i < len; i++) {
sprintf(index, "%i", start_index + i);
if (nvs_set_u8(handle, (const char *)index, values[i]) != ESP_OK) {
return false;
}
}
// commit flash changes
if (nvs_commit(handle) != ESP_OK) {
return false;
}
// close nvs
nvs_close(handle);
return true;
}
void common_hal_nvm_bytearray_get_bytes(nvm_bytearray_obj_t *self,
uint32_t start_index, uint32_t len, uint8_t *values) {
char index[9];
// start nvs
nvs_handle_t handle;
get_nvs_handle(&handle);
// get from flash
for (uint32_t i = 0; i < len; i++) {
sprintf(index, "%i", start_index + i);
if (nvs_get_u8(handle, (const char *)index, &values[i]) != ESP_OK) {
mp_raise_RuntimeError(translate("NVS Error"));
}
}
// close nvs
nvs_close(handle);
}
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