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esp-idf/docs/en/hw-reference/esp32c3/user-guide-devkitm-1.rst

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==================
ESP32-C3-DevKitM-1
==================
:link_to_translation:`zh_CN:[中文]`
This user guide will help you get started with ESP32-C3-DevKitM-1 and will also provide more in-depth information.
ESP32-C3-DevKitM-1 is an entry-level development board based on `ESP32-C3-MINI-1 <https://www.espressif.com/sites/default/files/documentation/esp32-c3-mini-1_datasheet_en.pdf>`_, a module named for its small size. This board integrates complete Wi-Fi and Bluetooth LE functions.
Most of the I/O pins on the ESP32-C3-MINI-1 module are broken out to the pin headers on both sides of this board for easy interfacing. Developers can either connect peripherals with jumper wires or mount ESP32-C3-DevKitM-1 on a breadboard.
.. figure:: ../../../_static/esp32-c3-devkitm-1-v1-isometric.png
:align: center
:alt: ESP32-C3-DevKitM-1
:figclass: align-center
ESP32-C3-DevKitM-1
The document consists of the following major sections:
- `Getting Started`_: Overview of ESP32-C3-DevKitM-1 and hardware/software setup instructions to get started.
- `Hardware Reference`_: More detailed information about the ESP32-C3-DevKitM-1's hardware.
- `Hardware Revision Details`_: Revision history, known issues, and links to user guides for previous versions (if any) of ESP32-C3-DevKitM-1.
- `Related Documents`_: Links to related documentation.
Getting Started
===============
This section provides a brief introduction of ESP32-C3-DevKitM-1, instructions on how to do the initial hardware setup and how to flash firmware onto it.
Description of Components
-------------------------
.. _user-guide-c3-devkitm-1-v1-board-front:
.. figure:: ../../../_static/esp32-c3-devkitm-1-v1-annotated-photo.png
:align: center
:alt: ESP32-C3-DevKitM-1 - front
:figclass: align-center
ESP32-C3-DevKitM-1 - front
.. list-table::
:widths: 30 70
:header-rows: 1
* - Key Component
- Description
* - ESP32-C3-MINI-1
- ESP32-C3-MINI-1 is a general-purpose Wi-Fi and Bluetooth LE combo module that comes with a PCB antenna. At the core of this module is `ESP32-C3FN4 <https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf>`_, a chip that has an embedded flash of 4 MB. Since flash is packaged in the ESP32-C3FN4 chip, rather than integrated into the module, ESP32-C3-MINI-1 has a smaller package size.
* - 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.
* - I/O Connector
- 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-devkitm-1-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-C3FN4 chip.
* - Reset Button
- Press this button to restart the system.
* - USB to UART Bridge
- Single USB-UART bridge chip provides transfer rates up to 3 Mbps.
* - RGB LED
- Addressable RGB LED (WS2812), driven by GPIO8.
Start Application Development
-----------------------------
Before powering up your ESP32-C3-DevKitM-1, please make sure that it is in good condition with no obvious signs of damage.
Required Hardware
^^^^^^^^^^^^^^^^^
- ESP32-C3-DevKitM-1
- USB 2.0 cable (Standard-A to Micro-B)
- Computer running Windows, Linux, or macOS
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 onto your ESP32-C3-DevKitM-1.
Contents and Packaging
----------------------
Retail Orders
^^^^^^^^^^^^^
If you order one or several samples, each ESP32-C3-DevKitM-1 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/company/contact/buy-a-sample.
Wholesale Orders
^^^^^^^^^^^^^^^^
If you order in bulk, the boards come in large cardboard boxes.
For wholesale orders, please check `Espressif Product Ordering Information <https://www.espressif.com/sites/default/files/documentation/espressif_products_ordering_information_en.pdf>`_ (PDF).
Hardware Reference
==================
Block Diagram
-------------
The block diagram below shows the components of ESP32-C3-DevKitM-1 and their interconnections.
.. figure:: ../../../_static/esp32-c3-devkitm-1-v1-block-diagram.png
:align: center
:scale: 70%
:alt: ESP32-C3-DevKitM-1 (click to enlarge)
:figclass: align-center
ESP32-C3-DevKitM-1 (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-devkitm-1-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-devkitm-1-v1-board-front`. The numbering is the same as in the `ESP32-C3-DevKitM-1 Schematic`_ (PDF).
J1
^^^
=== ==== ========== ===================================
No. Name Type [1]_ Function
=== ==== ========== ===================================
1 GND G Ground
2 3V3 P 3.3 V power supply
3 3V3 P 3.3 V power supply
4 IO2 I/O/T GPIO2 [2]_, ADC1_CH2, FSPIQ
5 IO3 I/O/T GPIO3, ADC1_CH3
6 GND G Ground
7 RST I CHIP_PU
8 GND G Ground
9 IO0 I/O/T GPIO0, ADC1_CH0, XTAL_32K_P
10 IO1 I/O/T GPIO1, ADC1_CH1, XTAL_32K_N
11 IO10 I/O/T GPIO10, FSPICS0
12 GND G Ground
13 5V P 5 V power supply
14 5V P 5 V power supply
15 GND G Ground
=== ==== ========== ===================================
J3
^^^
=== ==== ========== ====================================
No. Name Type [1]_ Function
=== ==== ========== ====================================
1 GND G Ground
2 TX I/O/T GPIO21, U0TXD
3 RX I/O/T GPIO20, U0RXD
4 GND G Ground
5 IO9 I/O/T GPIO9 [2]_
6 IO8 I/O/T GPIO8 [2]_, RGB LED
7 GND G Ground
8 IO7 I/O/T GPIO7, FSPID, MTDO
9 IO6 I/O/T GPIO6, FSPICLK, MTCK
10 IO5 I/O/T GPIO5, ADC2_CH0, FSPIWP, MTDI
11 IO4 I/O/T GPIO4, ADC1_CH4, FSPIHD, MTMS
12 GND G Ground
13 IO18 I/O/T GPIO18
14 IO19 I/O/T GPIO19
15 GND G Ground
=== ==== ========== ====================================
.. [1] P: Power supply; I: Input; O: Output; T: High impedance.
.. [2] GPIO2, GPIO8, and GPIO9 are strapping pins of the ESP32-C3FN4 chip. During the chip's system reset, the latches of the strapping pins sample the voltage level as strapping bits, and hold these bits until the chip is powered down or shut down. For description and application of strapping pins, please refer to Section Strapping Pins in `ESP32-C3 Datasheet`_.
Pin Layout
^^^^^^^^^^^
.. figure:: ../../../_static/esp32-c3-devkitm-1-v1-pinout.png
:align: center
:scale: 100%
:alt: ESP32-C3-DevKitM-1 (click to enlarge)
:figclass: align-center
ESP32-C3-DevKitM-1 Pin Layout (click to enlarge)
Hardware Revision Details
=========================
No previous versions available.
Related Documents
=================
* `Build Secure and Cost-effective Connected Devices with ESP32-C3 <http://c3.espressif.com/>`_
* `ESP32-C3 Datasheet`_ (PDF)
* `ESP32-C3-MINI-1 Datasheet`_ (PDF)
* `ESP32-C3-DevKitM-1 Schematic`_ (PDF)
* `ESP32-C3-DevKitM-1 PCB Layout <https://dl.espressif.com/dl/schematics/PCB_ESP32-C3-DEVKITM-1_V1_20200915AA.pdf>`_ (PDF)
* `ESP32-C3-DevKitM-1 Dimensions <https://dl.espressif.com/dl/schematics/DIMENSION_ESP32-C3-DEVKITM-1_V1_20200915AA.pdf>`_ (PDF)
* `ESP32-C3-DevKitM-1 Dimensions source file <https://dl.espressif.com/dl/schematics/DIMENSION_ESP32-C3-DEVKITM-1_V1_20200915AA.dxf>`_ (DXF) - You can view it with `Autodesk Viewer <https://viewer.autodesk.com/>`_ online
For further design documentation for the board, please contact us at `sales@espressif.com <sales@espressif.com>`_.
.. _ESP32-C3 Datasheet: https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf
.. _ESP32-C3-MINI-1 Datasheet: https://www.espressif.com/sites/default/files/documentation/esp32-c3-mini-1_datasheet_en.pdf
.. _ESP32-C3-DevKitM-1 Schematic: https://dl.espressif.com/dl/schematics/SCH_ESP32-C3-DEVKITM-1_V1_20200915A.pdf
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