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Merge branch 'docs/dac_dma_esp32s2' into 'master'

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docs: updates the dac part on ESP32S2.

See merge request espressif/esp-idf!11821
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Michael (XIAO Xufeng)
2021-01-13 16:03:57 +08:00
parent 78072b32ff da2be51868
commit 3729a33c90
1 changed files with 8 additions and 1 deletions
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docs/en/api-reference/peripherals/dac.rst
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@@ -13,7 +13,14 @@ Overview
The DAC driver allows these channels to be set to arbitrary voltages.
The DAC channels can also be driven with DMA-style written sample data, via the :doc:`I2S driver <i2s>` when using the "built-in DAC mode".
.. only:: esp32
The DAC channels can also be driven with DMA-style written sample data by the digital controller, via the :doc:`I2S driver <i2s>` when using the "built-in DAC mode".
.. only:: esp32s2
The DAC channels can also be driven with DMA-style written sample data by the digital controller, however the driver does not supported this yet.
For other analog output options, see the :doc:`Sigma-delta Modulation module <sigmadelta>` and the :doc:`LED Control module <ledc>`. Both these modules produce high frequency PWM output, which can be hardware low-pass filtered in order to generate a lower frequency analog output.