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nvs_entry_info() function
Fills nvs_entry_info_t structure with information about entry pointed to by the iterator.
Syntax
Implemented in ![]()
nvs_api.cpp:867
Return value
- ESP_OK if all parameters are valid; current iterator data has been written to out_info - ESP_ERR_INVALID_ARG if one of the parameters is NULL.
Related Functions
Found 10 other functions taking a ![]()
nvs_opaque_iterator_t
argument:
Function
Description
Advances the iterator to next item matching the iterator criteria. Note that any copies of the iterator will be invalid after this call.
Create an iterator to enumerate NVS entries based on one or more parameters
{c}
// Example of listing all the key-value pairs of any type under specified partition and namespace
nvs_iterator_t it = NULL;
esp_err_t res = nvs_entry_find(, , NVS_TYPE_ANY, &it);
while(res == ESP_OK) {
nvs_entry_info_t info;
nvs_entry_info(it, &info); // Can omit error check if parameters are guaranteed to be non-NULL
printf("key '%s', type '%d' \n", info.key, info.type);
res = nvs_entry_next(&it);
}
nvs_release_iterator(it);
Release iterator
Create an iterator to enumerate NVS entries based on a handle and type
{c}
// Example of listing all the key-value pairs of any type under specified handle (which defines a partition and namespace)
nvs_iterator_t it = NULL;
esp_err_t res = nvs_entry_find_in_handle(, NVS_TYPE_ANY, &it);
while(res == ESP_OK) {
nvs_entry_info_t info;
nvs_entry_info(it, &info); // Can omit error check if parameters are guaranteed to be non-NULL
printf("key '%s', type '%d' \n", info.key, info.type);
res = nvs_entry_next(&it);
}
nvs_release_iterator(it);