55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
#include "constants.h"
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#include "storage.h"
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#include "nvs_flash.h"
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#include "nvs.h"
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#include <string.h>
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#define STORAGE_NAMESPACE "storage"
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#define DEV_NAME_KEY "dev_name"
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bool storage_init()
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{
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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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{
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printf("Need to reset storage\n");
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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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return err == ESP_OK;
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}
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void storage_set_dev_name(const char *name)
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{
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nvs_handle_t my_handle;
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ESP_ERROR_CHECK(nvs_open(STORAGE_NAMESPACE, NVS_READWRITE, &my_handle));
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ESP_ERROR_CHECK(nvs_set_blob(my_handle, DEV_NAME_KEY, name, strlen(name)));
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nvs_close(my_handle);
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}
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size_t storage_get_dev_name(char *dest)
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{
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nvs_handle_t my_handle;
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ESP_ERROR_CHECK(nvs_open(STORAGE_NAMESPACE, NVS_READWRITE, &my_handle));
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size_t len = (dest == NULL ? 0 : DEV_NAME_LEN);
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esp_err_t res = nvs_get_blob(my_handle, DEV_NAME_KEY, dest, &len);
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nvs_close(my_handle);
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if (res == ESP_ERR_NVS_NOT_FOUND || len == 0)
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return 0;
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ESP_ERROR_CHECK(res);
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return len;
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} |