98 lines
3.0 KiB
C
98 lines
3.0 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) 2020 microDev
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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 "common-hal/nvm/ByteArray.h"
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#include "py/runtime.h"
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#include "nvs_flash.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 get_nvs_handle(nvs_handle_t *nvs_handle) {
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// Initialize NVS
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esp_err_t err = nvs_flash_init();
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if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND) {
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// NVS partition was truncated and needs to be erased
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// Retry nvs_flash_init
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ESP_ERROR_CHECK(nvs_flash_erase());
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err = nvs_flash_init();
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}
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ESP_ERROR_CHECK(err);
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// Open NVS handle
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if (nvs_open("CPY", NVS_READWRITE, nvs_handle) != ESP_OK) {
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mp_raise_RuntimeError(translate("NVS Error"));
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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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char index[9];
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// start nvs
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nvs_handle_t handle;
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get_nvs_handle(&handle);
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// stage flash changes
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for (uint32_t i = 0; i < len; i++) {
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sprintf(index, "%i", start_index + i);
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if (nvs_set_u8(handle, (const char *)index, values[i]) != ESP_OK) {
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return false;
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}
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}
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// commit flash changes
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if (nvs_commit(handle) != ESP_OK) {
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return false;
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}
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// close nvs
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nvs_close(handle);
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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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char index[9];
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// start nvs
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nvs_handle_t handle;
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get_nvs_handle(&handle);
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// get from flash
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for (uint32_t i = 0; i < len; i++) {
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sprintf(index, "%i", start_index + i);
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if (nvs_get_u8(handle, (const char *)index, &values[i]) != ESP_OK) {
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mp_raise_RuntimeError(translate("NVS Error"));
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}
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}
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// close nvs
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nvs_close(handle);
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}
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