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feat(rng): trng refactor to ll functions on esp32s31

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gaoxu
2026-04-15 11:34:37 +08:00
parent fab36071f8
commit 3d7a643ff7
8 changed files with 116 additions and 34 deletions
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2
docs/en/api-reference/peripherals/adc/adc_continuous.rst
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@@ -388,7 +388,7 @@ Hardware Limitations
.. list::
- A specific ADC unit can only work under one operating mode at any one time, either continuous mode or one-shot mode. :cpp:func:`adc_continuous_start` has provided the protection.
- Random Number Generator (RNG) uses ADC as an input source. When ADC continuous mode driver works, the random number generated from RNG will be less random.
:not esp32s31: - Random Number Generator (RNG) uses ADC as an input source. When ADC continuous mode driver works, the random number generated from RNG will be less random.
:esp32 or esp32s2: - ADC2 is also used by Wi-Fi. :cpp:func:`adc_continuous_start` has provided the protection between Wi-Fi driver and ADC continuous mode driver.
:esp32: - ADC continuous mode driver uses I2S0 peripheral as hardware DMA FIFO. Therefore, if I2S0 is in use already, the :cpp:func:`adc_continuous_new_handle` will return :c:macro:`ESP_ERR_NOT_FOUND`.
:esp32: - ESP32 DevKitC: GPIO 0 cannot be used due to external auto program circuits.

2
docs/en/api-reference/peripherals/adc/adc_oneshot.rst
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@@ -159,7 +159,7 @@ Hardware Limitations
.. list::
- Random Number Generator (RNG) uses ADC as an input source. When ADC :cpp:func:`adc_oneshot_read` works, the random number generated from RNG will be less random.
:not esp32s31: - Random Number Generator (RNG) uses ADC as an input source. When ADC :cpp:func:`adc_oneshot_read` works, the random number generated from RNG will be less random.
:SOC_ADC_DMA_SUPPORTED: - A specific ADC unit can only work under one operating mode at any one time, either continuous mode or oneshot mode. :cpp:func:`adc_oneshot_read` has provided the protection.
:esp32 or esp32s2 or esp32s3: - ADC2 is also used by Wi-Fi. :cpp:func:`adc_oneshot_read` has provided protection between the Wi-Fi driver and ADC oneshot mode driver.
:esp32c3: - ADC2 oneshot mode is no longer supported, due to hardware limitations. The results are not stable. This issue can be found in `ESP32-C3 Series SoC Errata <https://www.espressif.com/sites/default/files/documentation/esp32-c3_errata_en.pdf>`_. For compatibility, you can enable :ref:`CONFIG_ADC_ONESHOT_FORCE_USE_ADC2_ON_C3` to force use ADC2.