=================== ESP32-C3-DevKitC-02 =================== :link_to_translation:`zh_CN:[中文]` This user guide will help you get started with ESP32-C3-DevKitC-02 and will also provide more in-depth information. ESP32-C3-DevKitC-02 is an entry-level development board based on `ESP32-C3-WROOM-02 `_, a general-purpose module with 4 MB SPI flash. This board integrates complete Wi-Fi and Bluetooth LE functions. Most of the I/O pins are broken out to the pin headers on both sides for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-C3-DevKitC-02 on a breadboard. .. figure:: ../../../_static/esp32-c3-devkitc-02-v1-isometric.png :align: center :alt: ESP32-C3-DevKitC-02 :figclass: align-center ESP32-C3-DevKitC-02 The document consists of the following major sections: - `Getting Started`_: Overview of ESP32-C3-DevKitC-02 and hardware/software setup instructions to get started. - `Hardware Reference`_: More detailed information about the ESP32-C3-DevKitC-02's hardware. - `Hardware Revision Details`_: Revision history, known issues, and links to user guides for previous versions (if any) of ESP32-C3-DevKitC-02. - `Related Documents`_: Links to related documentation. Getting Started =============== This section provides a brief introduction of ESP32-C3-DevKitC-02, instructions on how to do the initial hardware setup and how to flash firmware onto it. Description of Components ------------------------- .. _user-guide-c3-devkitc-02-v1-board-front: .. figure:: ../../../_static/esp32-c3-devkitc-02-v1-annotated-photo.png :align: center :alt: ESP32-C3-DevKitC-02 - front :figclass: align-center ESP32-C3-DevKitC-02 - front The key components of the board are described in a counter-clockwise direction. .. list-table:: :widths: 30 70 :header-rows: 1 * - Key Component - Description * - ESP32-C3-WROOM-02 - ESP32-C3-WROOM-02 from Espressif is a powerful and general-purpose module that offers Wi-Fi and Bluetooth LE coexistence. It has a PCB antenna and a 4 MB SPI flash. * - 5 V to 3.3 V LDO - Power regulator that converts a 5 V supply into a 3.3 V output. * - 5 V Power On LED - Turns on when the USB power is connected to the board. * - Pin Headers - All available GPIO pins (except for the SPI bus for flash) are broken out to the pin headers on the board. For details, please see :ref:`user-guide-c3-devkitc-02-v1-header-blocks`. * - Boot Button - Download button. Holding down **Boot** and then pressing **Reset** initiates Firmware Download mode for downloading firmware through the serial port. * - Micro-USB Port - USB interface. Power supply for the board as well as the communication interface between a computer and the ESP32-C3 chip. * - Reset Button - Press this button to restart the system. * - USB-to-UART Bridge - Single USB-to-UART bridge chip provides transfer rates up to 3 Mbps. * - RGB LED - Addressable RGB LED, driven by GPIO8. Start Application Development ----------------------------- Before powering up your ESP32-C3-DevKitC-02, please make sure that it is in good condition with no obvious signs of damage. Required Hardware ^^^^^^^^^^^^^^^^^ - ESP32-C3-DevKitC-02 - USB 2.0 cable (Standard-A to Micro-B) - Computer running Windows, Linux, or macOS .. note:: Be sure to use an appropriate USB cable. Some cables are for charging only and do not provide the needed data lines nor work for programming the boards. Software Setup ^^^^^^^^^^^^^^ Please proceed to :doc:`../../get-started/index`, where Section :ref:`get-started-step-by-step` will quickly help you set up the development environment and then flash an application example into your ESP32-C3-DevKitC-02. Contents and Packaging ---------------------- Retail orders ^^^^^^^^^^^^^ If you order a few samples, each ESP32-C3-DevKitC-02 comes in an individual package in either antistatic bag or any packaging depending on your retailer. For retail orders, please go to https://www.espressif.com/en/contact-us/get-samples. Wholesale Orders ^^^^^^^^^^^^^^^^ If you order in bulk, the boards come in large cardboard boxes. For wholesale orders, please go to https://www.espressif.com/en/contact-us/sales-questions. Hardware Reference ================== Block Diagram ------------- The block diagram below shows the components of ESP32-C3-DevKitC-02 and their interconnections. .. figure:: ../../../_static/esp32-c3-devkitc-02-v1-block-diags.png :align: center :scale: 70% :alt: ESP32-C3-DevKitC-02 (click to enlarge) :figclass: align-center ESP32-C3-DevKitC-02 (click to enlarge) Power Supply Options ^^^^^^^^^^^^^^^^^^^^ There are three mutually exclusive ways to provide power to the board: - Micro-USB Port, default power supply - 5V and GND pin headers - 3V3 and GND pin headers It is recommended to use the first option: Micro-USB Port. .. _user-guide-c3-devkitc-02-v1-header-blocks: Header Block ------------ The two tables below provide the **Name** and **Function** of the pin headers on both sides of the board (J1 and J3). The pin header names are shown in :ref:`user-guide-c3-devkitc-02-v1-board-front`. The numbering is the same as in the `ESP32-C3-DevKitC-02 Schematic`_ (PDF). J1 ^^^ === ==== ========== =================================== No. Name Type [1]_ Function === ==== ========== =================================== 1 G G Ground 2 3V3 P 3.3 V power supply 3 3V3 P 3.3 V power supply 4 RST I CHIP_PU 5 G G Ground 6 4 I/O/T GPIO4, ADC1_CH4, FSPIHD, MTMS 7 5 I/O/T GPIO5, ADC2_CH0, FSPIWP, MTDI 8 6 I/O/T GPIO6, FSPICLK, MTCK 9 7 I/O/T GPIO7, FSPID, MTDO 10 G G Ground 11 8 I/O/T GPIO8 [2]_, RGB LED 12 9 I/O/T GPIO9 [2]_ 13 5V P 5 V power supply 14 5V P 5 V power supply 15 G G Ground === ==== ========== =================================== J3 ^^^ === ==== ========== ==================================== No. Name Type [1]_ Function === ==== ========== ==================================== 1 G G Ground 2 0 I/O/T GPIO0, ADC1_CH0, XTAL_32K_P 3 1 I/O/T GPIO1, ADC1_CH1, XTAL_32K_N 4 2 I/O/T GPIO2 [2]_, ADC1_CH2, FSPIQ 5 3 I/O/T GPIO3, ADC1_CH3 6 G G Ground 7 10 I/O/T GPIO10, FSPICS0 8 G G Ground 9 RX I/O/T GPIO20, U0RXD 10 TX I/O/T GPIO21, U0TXD 11 G G Ground 12 18 I/O/T GPIO18 13 19 I/O/T GPIO19 14 G G Ground 15 G G Ground === ==== ========== ==================================== .. [1] P: Power supply; I: Input; O: Output; T: High impedance. .. [2] GPIO2, GPIO8, and GPIO9 are strapping pins of the ESP32-C3 chip. These pins are used to control several chip functions depending on binary voltage values applied to the pins during chip power-up or system reset. For description and application of the strapping pins, please refer to Section Strapping Pins in `ESP32-C3 Datasheet`_. Pin Layout ^^^^^^^^^^^ .. figure:: ../../../_static/esp32-c3-devkitc-02-v1-pinout.png :align: center :scale: 50% :alt: ESP32-C3-DevKitC-02 (click to enlarge) :figclass: align-center ESP32-C3-DevKitC-02 Pin Layout (click to enlarge) Hardware Revision Details ========================= No previous versions available. Related Documents ================= * `Build Secure and Cost-effective Connected Devices with ESP32-C3 `_ * `ESP32-C3 Datasheet`_ (PDF) * `ESP32-C3-WROOM-02 Datasheet`_ (PDF) * `ESP32-C3-DevKitC-02 Schematic`_ (PDF) * `ESP32-C3-DevKitC-02 PCB Layout `_ (PDF) * `ESP32-C3-DevKitC-02 Dimensions `_ (PDF) * `ESP32-C3-DevKitC-02 Dimensions source file `_ (DXF) - You can view it with `Autodesk Viewer `_ online For further design documentation for the board, please contact us at `sales@espressif.com `_. .. _ESP32-C3 Datasheet: https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf .. _ESP32-C3-WROOM-02 Datasheet: https://www.espressif.com/sites/default/files/documentation/esp32-c3-wroom-02_datasheet_en.pdf .. _ESP32-C3-DevKitC-02 Schematic: https://dl.espressif.com/dl/schematics/SCH_ESP32-C3-DEVKITC-02_V1_1_20210126A.pdf