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Renamed ESP-WROOM-32 to ESP32-WROOM-32/D/U including links to data sheets, reflected upcoming ESP32-SOLO-1 as one of options for ESP32-DevKitC, provided updated schematics and notes on C15.
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krzychb
@@ -17,7 +17,7 @@ Overview
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ESP32-DevKitC V4 is a small-sized ESP32-based development board produced by `Espressif <https://espressif.com>`_. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can connect these pins to peripherals as needed. Standard headers also make development easy and convenient when using a breadboard.
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The board comes in two versions, either with :ref:`esp-modules-and-boards-esp-wroom-32` or :ref:`esp-modules-and-boards-esp32-wrover` module soldered.
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The board supports various ESP32 modules, including :ref:`esp-modules-and-boards-esp32-wroom-32`, :ref:`ESP32-WROOM-32U <esp-modules-and-boards-esp32-wroom-32d-and-u>`, :ref:`ESP32-WROOM-32D <esp-modules-and-boards-esp32-wroom-32d-and-u>` and :ref:`esp-modules-and-boards-esp32-solo-1`.
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Functional Description
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@@ -25,10 +25,8 @@ Functional Description
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The following list and figure below describe key components, interfaces and controls of ESP32-DevKitC V4 board.
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ESP-WROOM-32
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:ref:`esp-modules-and-boards-esp-wroom-32` module soldered to the ESP32-DevKitC V4 board.
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ESP32-WROVER
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Optionally :ref:`esp-modules-and-boards-esp32-wrover` module may be soldered instead of the ESP-WROOM-32.
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ESP32-WROOM-32
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:ref:`esp-modules-and-boards-esp32-wroom-32` module soldered to the ESP32-DevKitC V4 board. Optionally ESP32-WROOM-32D, ESP32-WROOM-32U or ESP32-SOLO-1 module may be soldered instead of the ESP32-WROOM-32.
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USB-UART Bridge
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A single chip USB-UART bridge provides up to 3 Mbps transfers rates.
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Boot
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@@ -44,21 +42,16 @@ I/O
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.. note::
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Some of broken out pins are used internally be the ESP32 module to communicate with SPI memory. They are grouped on one side of the board besides the USB connector and labeled D0, D1, D2, D3, CMD and CLK. In general these pins should be left unconnected or access to the SPI flash memory / SPI RAM may be disturbed.
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.. note::
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GPIO16 and 17 are used internally by the ESP32-WROVER module. They are broken out and avialable for use only for boards that have the ESP-WROOM-32 module installed.
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Some of broken out pins are used internally by the ESP32-WROOM-32, ESP32-WROOM-32D/U and ESP32-SOLO-1 modules to communicate with SPI memory. They are grouped on one side of the board besides the USB connector and labeled CLK, D0, D1, D2, D3 and CMD (GPIO6 - GPIO11). In general these pins should be left unconnected, otherwise access to the SPI flash memory / SPI RAM may be disturbed.
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.. _get-started-esp32-devkitc-board-front:
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.. figure:: ../../_static/esp32-devkitc-functional-overview.jpg
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:align: center
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:alt: ESP32-DevKitC V4 with ESP-WROOM-32 module soldered
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:alt: ESP32-DevKitC V4 with ESP32-WROOM-32 module soldered
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:figclass: align-center
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ESP32-DevKitC V4 with ESP-WROOM-32 module soldered
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ESP32-DevKitC V4 with ESP32-WROOM-32 module soldered
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Power Supply Options
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@@ -75,6 +68,25 @@ There following options are available to provide power supply to this board:
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Above options are mutually exclusive, i.e. the power supply may be provided using only one of the above options. Attempt to power the board using more than one connection at a time may damage the board and/or the power supply source.
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Note on C15
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-----------
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The C15, on the board of earlier batches of V4, may bring two issues:
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1. The board may boot into download mode;
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2. If users output clock on GPIO0, C15 may impact the clock output.
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As a result, if users believe that C15 will impact their use of the board, they can remove it completely (please refer to the screenshot below for the precise location of C15 that is colored in yellow). Otherwise, users do not need to concern about C15.
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.. figure:: ../../_static/esp32-devkitc-c15-location.png
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:align: center
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:alt: Location of C15 (colored yellow) on ESP32-DevKitC V4 board
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:figclass: align-center
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:width: 30%
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Location of C15 (colored yellow) on ESP32-DevKitC V4 board
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Start Application Development
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------------------------------
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@@ -102,10 +114,11 @@ Board Dimensions
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Related Documents
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-----------------
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* `ESP32-DevKitC V4 schematic <https://dl.espressif.com/dl/schematics/esp32_devkitc_v4-sch.pdf>`_ (PDF)
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* `ESP32-DevKitC V4 schematic <https://dl.espressif.com/dl/schematics/esp32_devkitc_v4-sch-20180607a.pdf>`_ (PDF)
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* `ESP32 Datasheet <https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf>`_ (PDF)
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* `ESP-WROOM-32 Datasheet <https://espressif.com/sites/default/files/documentation/esp-wroom-32_datasheet_en.pdf>`_ (PDF)
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* `ESP32-WROVER Datasheet <https://espressif.com/sites/default/files/documentation/esp32-wrover_datasheet_en.pdf>`_ (PDF)
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* `ESP32-WROOM-32 Datasheet <https://espressif.com/sites/default/files/documentation/esp32-wroom-32_datasheet_en.pdf>`_ (PDF)
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* `ESP32-WROOM-32D/U Datasheet <https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf>`_ (PDF)
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.. toctree::
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:hidden:
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@@ -17,7 +17,7 @@ What You Need
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Overview
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^^^^^^^^
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The ESP-WROVER-KIT is a development board produced by `Espressif <https://espressif.com>`_ built around ESP32. This board is compatible with ESP32 modules, including the ESP-WROOM-32 and ESP32-WROVER. The ESP-WROVER-KIT features support for an LCD and MicroSD card. The I/O pins have been broken out from the ESP32 module for easy extension. The board carries an advanced multi-protocol USB bridge (the FTDI FT2232HL), enabling developers to use JTAG directly to debug the ESP32 through the USB interface. The development board makes secondary development easy and cost-effective.
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The ESP-WROVER-KIT is a development board produced by `Espressif <https://espressif.com>`_ built around ESP32. This board is compatible with ESP32 modules, including the ESP32-WROOM-32 and ESP32-WROVER. The ESP-WROVER-KIT features support for an LCD and MicroSD card. The I/O pins have been broken out from the ESP32 module for easy extension. The board carries an advanced multi-protocol USB bridge (the FTDI FT2232HL), enabling developers to use JTAG directly to debug the ESP32 through the USB interface. The development board makes secondary development easy and cost-effective.
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.. note::
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@@ -47,7 +47,7 @@ The following list and figures below describe key components, interfaces and con
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0R
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A zero Ohm resistor intended as a placeholder for a current shunt. May be desoldered or replaced with a current shunt to facilitate measurement of current required by ESP32 module depending on power mode.
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ESP32 Module
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ESP-WROVER-KIT is compatible with both ESP-WROOM-32 and ESP32-WROVER. The ESP32-WROVER module features all the functions of ESP-WROOM-32 and integrates an external 32-MBit PSRAM for flexible extended storage and data processing capabilities.
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ESP-WROVER-KIT is compatible with both ESP32-WROOM-32 and ESP32-WROVER. The ESP32-WROVER module features all the functions of ESP32-WROOM-32 and integrates an external 32-MBit PSRAM for flexible extended storage and data processing capabilities.
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.. note::
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@@ -58,7 +58,7 @@ FT2232
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UART
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Serial port: the serial TX/RX signals on FT2232HL and ESP32 are broken out to the two sides of JP11. By default, the two signals are connected with jumpers. To use the ESP32 module serial interface only, the jumpers may be removed and the module can be connected to another external serial device.
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SPI
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SPI interface: the SPI interface connects to an external flash (PSRAM). To interface another SPI device, an extra CS signal is needed. The electrical level on the flash of this module is 1.8V. If an ESP-WROOM-32 is being used, please note that the electrical level on the flash of this module is 3.3V.
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SPI interface: the SPI interface connects to an external flash (PSRAM). To interface another SPI device, an extra CS signal is needed. The electrical level on the flash of this module is 1.8V. If an ESP32-WROOM-32 is being used, please note that the electrical level on the flash of this module is 3.3V.
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CTS/RTS
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Serial port flow control signals: the pins are not connected to the circuitry by default. To enable them, respective pins of JP14 must be shorted with jumpers.
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JTAG
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@@ -394,7 +394,7 @@ Related Documents
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* `ESP-WROVER-KIT V3 schematic`_ (PDF)
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* `ESP32 Datasheet <https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf>`_ (PDF)
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* `ESP32-WROVER Datasheet <https://espressif.com/sites/default/files/documentation/esp32-wrover_datasheet_en.pdf>`_ (PDF)
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* `ESP-WROOM-32 Datasheet <https://espressif.com/sites/default/files/documentation/esp-wroom-32_datasheet_en.pdf>`_ (PDF)
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* `ESP32-WROOM-32 Datasheet <https://espressif.com/sites/default/files/documentation/esp32-wroom-32_datasheet_en.pdf>`_ (PDF)
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* :doc:`../api-guides/jtag-debugging/index`
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* :doc:`../hw-reference/index`
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