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| author | Ihor Nehrutsa <Ihor.Nehrutsa@gmail.com> | 2023-11-13 12:06:42 +0200 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2023-12-11 12:58:22 +1100 |
| commit | e423b3c0ba09d7f8b1b9081e2edb520455aaad33 (patch) | |
| tree | 7cb41596b0c6f2e7fc56dae0303b837f82814d7e /docs/esp32/quickref.rst | |
| parent | 495be71d56337a7b162b4fe97d4407d97f87d9f0 (diff) | |
docs/esp32/quickref: Add DAC example.
Signed-off-by: IhorNehrutsa <Ihor.Nehrutsa@gmail.com>
Diffstat (limited to 'docs/esp32/quickref.rst')
| -rw-r--r-- | docs/esp32/quickref.rst | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/docs/esp32/quickref.rst b/docs/esp32/quickref.rst index e03a5ffbc..08df25b05 100644 --- a/docs/esp32/quickref.rst +++ b/docs/esp32/quickref.rst @@ -141,7 +141,7 @@ These are working configurations for LAN interfaces of popular boards:: # Olimex ESP32-GATEWAY: power controlled by Pin(5) # Olimex ESP32 PoE and ESP32-PoE ISO: power controlled by Pin(12) - lan = network.LAN(mdc=machine.Pin(23), mdio=machine.Pin(18), power=machine.Pin(5), + lan = network.LAN(mdc=machine.Pin(23), mdio=machine.Pin(18), power=machine.Pin(5), phy_type=network.PHY_LAN8720, phy_addr=0, ref_clk=machine.Pin(17), ref_clk_mode=machine.Pin.OUT) @@ -330,6 +330,19 @@ possible at the same frequency. See more examples in the :ref:`esp32_pwm` tutorial. +DAC (digital to analog conversion) +---------------------------------- + +On the ESP32, DAC functionality is available on pins 25, 26. +On the ESP32S2, DAC functionality is available on pins 17, 18. + +Use the DAC:: + + from machine import DAC, Pin + + dac = DAC(Pin(25)) # create an DAC object acting on a pin + dac.write(128) # set a raw analog value in the range 0-255, 50% now + ADC (analog to digital conversion) ---------------------------------- |