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SourceVuESP-IDF Framework and ExamplesESP-IDFnvs::Page::readItem()

nvs::Page::readItem()

Syntax

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Summary

Declaration

from nvs_page.hpp:110

esp_err_t readItem(uint8_t nsIndex, const char* key, T& value);

References

Code

Location

Scope

Referrer

esp_err_t Page::readItem(uint8_t nsIndex, ItemType datatype, const char* key, void* data, size_t dataSize, uint8_t chunkIdx, VerOffset chunkStart)

nvs_page.cpp:253

esp_err_t readItem(uint8_t nsIndex, const char* key, T& value)

nvs_page.hpp:110

esp_err_t readItem(uint8_t nsIndex, ItemType datatype, const char* key, void* data, size_t dataSize, uint8_t chunkIdx = CHUNK_ANY, VerOffset chunkStart = VerOffset::VER_ANY);

nvs_page.hpp:91

err = findPage->readItem(nsIndex, ItemType::BLOB_DATA, key, static_cast<uint8_t*>(data) + offset, item.varLength.dataSize, static_cast<uint8_t> (chunkStart) + chunkNum);

nvs_storage.cpp:614

nvs::Storage::readMultiPageBlob()

return findPage->readItem(nsIndex, datatype, key, data, dataSize);

nvs_storage.cpp:694

nvs::Storage::readItem()

Call Tree

nvs::Page::readItem() is called by 2 functions and calls 7 functions:

nvs::Storage::readMultiPageBlob()

nvs::Storage::readItem()

nvs::Page::readItem()

nvs::isVariableLengthType()

nvs::Page::getAlignmentForType()

nvs::Item::Item()

nvs::Page::readEntry() const

nvs::Page::findItem()

nvs::Page::eraseEntryAndSpan()

nvs::Item::calculateCrc32()

Data Use

nvs::Page::readItem() reads 11 variables:

nvs::VerOffset::VER_ANY

nvs::Item::::::span

nvs::Item::::::::::dataSize

nvs::Item::::::::::dataCrc32

nvs::Item::::::::varLength

nvs::Page::PageState::INVALID

nvs::Page::mState

nvs::Item::::::::data

nvs::Item::::rawData

nvs::Page::ENTRY_SIZE

nvs::Page::CHUNK_ANY

nvs::Page::readItem()

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