From da2be518684794cbbd2b526500b7fe0c552b8d19 Mon Sep 17 00:00:00 2001 From: "Michael (XIAO Xufeng)" Date: Wed, 30 Dec 2020 09:24:10 +0800 Subject: [PATCH] docs: updates the dac part on ESP32S2. Closes https://github.com/espressif/esp-idf/issues/6333 --- docs/en/api-reference/peripherals/dac.rst | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/docs/en/api-reference/peripherals/dac.rst b/docs/en/api-reference/peripherals/dac.rst index 56197ac2bb..50251ca9a2 100644 --- a/docs/en/api-reference/peripherals/dac.rst +++ b/docs/en/api-reference/peripherals/dac.rst @@ -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 ` 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 ` 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 ` and the :doc:`LED Control module `. Both these modules produce high frequency PWM output, which can be hardware low-pass filtered in order to generate a lower frequency analog output.