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Merge branch 'fix/spi_encryption_test_and_guide' into 'master'

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fix(driver_spi): add flash encryption test and guide

Closes IDF-15060

See merge request espressif/esp-idf!51261
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morris
2026-09-14 14:45:18 +08:00
parent aed151a7d2 7d6790aea0
commit bd0f65b73c
32 changed files with 164 additions and 22 deletions
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docs/en/api-reference/peripherals/spi_master.rst
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@@ -369,6 +369,10 @@ The example code for the SPI Master driver can be found in the :example:`periphe
Note that this feature shares bandwidth (bus frequency * bus bits width) with MSPI bus, so GPSPI transfer bandwidth should be less than PSRAM bandwidth, **otherwise transmission data may be lost**. You can check the return value or :c:macro:`SPI_TRANS_DMA_RX_FAIL` and :c:macro:`SPI_TRANS_DMA_TX_FAIL` flags after the transaction is finished to check if error occurs during the transmission. If the transaction returns :c:macro:`ESP_ERR_INVALID_STATE` error, the transaction fails.
.. note::
When encryption is enabled, there are stricter alignment requirements for PSRAM buffer transfers, usually only supporting 16-byte alignment. For unaligned transfers, :c:macro:`ESP_ERR_INVALID_ARG` error will be returned. You can switch to internal memory or remove the :c:macro:`SPI_TRANS_DMA_USE_PSRAM` flag.
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