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356 lines
11 KiB
ReStructuredText
356 lines
11 KiB
ReStructuredText
ESP32-PICO-DevKitM-2
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*********************
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:link_to_translation:`zh_CN:[中文]`
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Overview
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===========
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ESP32-PICO-DevKitM-2 is an ESP32-based development board produced by `Espressif <https://espressif.com>`_.
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The core of this board is `ESP32-PICO-MINI-02 <https://www.espressif.com/en/products/modules>`_ module with complete Wi-Fi and Bluetooth functionalities. The development board features a USB-to-UART Bridge circuit which allows developers to connect the board to a computer's USB port for flashing and debugging.
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All the IO signals and system power on ESP32-PICO-MINI-02 are led out to two rows of 18 x 0.1" header pads on both sides of the development board for easy access. For compatibility with Dupont wires, all header pads are populated with two rows of male pin headers.
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.. note::
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ESP32-PICO-DevKitM-2 comes with male headers by default.
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ESP32-PICO-DevKitM-2 provides the users with hardware for development of applications based on the ESP32, making it easier for users to explore ESP32 functionalities.
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.. figure:: ../../../_static/esp32-pico-devkitm-2-overview.png
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:align: center
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:scale: 70%
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:alt: ESP32-PICO-DevKitM-2 (click to enlarge)
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:figclass: align-center
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ESP32-PICO-DevKitM-2 Overview (click to enlarge)
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This guide covers:
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- `Getting Started`_: Provides an overview of the ESP32-PICO-DevKitM-2 and software setup instructions to get started.
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- `Contents and Packaging`_: Provides information about packaging and contents for retail and wholesale orders.
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- `Hardware Reference`_: Provides more detailed information about the ESP32-PICO-DevKitM-2’s hardware.
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- `Hardware Revision Details`_: Covers revision history, known issues, and links to user guides for previous versions (if any) of the ESP32-PICO-DevKitM-2.
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- `Related Documents`_: Gives links to related documentation.
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Getting Started
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===============
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This section describes how to get started with the ESP32-PICO-DevKitM-2. It begins with a few introductory sections about the ESP32-PICO-DevKitM-2, then Section `Start Application Development`_ provides instructions on how to flash firmware onto the ESP32-PICO-DevKitM-2.
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.. _get-started-pico-devkitm-2-board-front:
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Description of Components
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-----------------------------
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The following figure and the table below describe the key components, interfaces, and controls of the ESP32-PICO-DevKitM-2 board.
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.. figure:: ../../../_static/esp32-pico-devkitm-2-layout-front.png
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:align: center
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:scale: 90%
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:alt: ESP32-PICO-DevKitM-2 (click to enlarge)
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:figclass: align-center
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ESP32-PICO-DevKitM-2 board layout - front (click to enlarge)
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Below is the description of the items identified in the figure starting from the top left corner and going clockwise.
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================== =================================================================================================================================
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Key Component Description
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================== =================================================================================================================================
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ESP32-PICO-MINI-02 Standard ESP32-PICO-MINI-02 module soldered to the ESP32-PICO-DevKitM-2 board. The complete ESP32 system on a chip (ESP32 SoC) has been integrated into the module.
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LDO 5V-to-3.3V Low dropout voltage regulator (LDO).
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USB-to-UART bridge CP2102N, single-chip USB-UART bridge that offers up to 3 Mbps transfers rates.
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Micro-B USB Port USB interface. Power supply for the board as well as the communication interface between a computer and the board.
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5V Power On LED This red LED turns on when power is supplied to the board. For details, see the schematic in `Related Documents`_.
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I/O Connector All the pins on ESP32-PICO-MINI-02 are broken out to pin headers. You can program ESP32 to enable multiple functions, such as PWM, ADC, DAC, I2C, I2S, SPI, etc. For details, please see Section `Pin Descriptions`_.
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BOOT Button Download button. Holding down **Boot** and then pressing **EN** initiates Firmware Download mode for downloading firmware through the serial port.
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EN Button Reset button.
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================== =================================================================================================================================
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Start Application Development
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-----------------------------
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Before powering up your ESP32-PICO-DevKitM-2, please make sure that the board is in good condition with no obvious signs of damage.
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Required Hardware
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""""""""""""""""""""""""
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- 1 x ESP32-PICO-DevKitM-2
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- 1 x USB 2.0 A to Micro B cable
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- 1 x Computer running Windows, Linux, or macOS
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.. _user-guide-pico-devkitm-2-software-setup:
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Software Setup
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""""""""""""""""""""""""
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Please proceed to :doc:`../../get-started/index`, where Section :ref:`get-started-step-by-step` will quickly help you set up the development environment.
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Contents and Packaging
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=======================
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Retail Orders
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---------------
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If you order one or several samples of the board, each ESP32-PICO-DevKitM-2 development board comes in an individual package.
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For retail orders, please go to https://www.espressif.com/en/company/contact/buy-a-sample.
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Wholesale Orders
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------------------
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If you order in bulk, the boards come in large cardboard boxes.
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For wholesale orders, please check `Espressif Product Ordering Information <https://www.espressif.com/sites/default/files/documentation/espressif_products_ordering_information_en.pdf>`_ (PDF)
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Hardware Reference
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=======================
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Block Diagram
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------------------
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The block diagram below shows the main components of ESP32-PICO-DevKitM-2 and their interconnections.
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.. figure:: ../../../_static/esp32-pico-devkitm-2-block.png
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:align: center
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:scale: 70%
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:alt: ESP32-PICO-DevKitM-2 (click to enlarge)
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:figclass: align-center
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ESP32-PICO-DevKitM-2 Block Diagram (click to enlarge)
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Power Supply Options
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--------------------
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There are three mutually exclusive ways to provide power to the board:
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* Micro USB port, default power supply
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* 5V/GND header pins
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* 3V3/GND header pins
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.. warning::
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The power supply must be provided using **one and only one of the options above**, otherwise the board and/or the power supply source can be damaged.
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Pin Descriptions
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----------------
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The two tables below provide the **Name** and **Function** of I/O header pins on both sides of the board, see :ref:`get-started-pico-devkitm-2-board-front`. The pin numbering and header names are the same as in the schematic given in `Related Documents`_.
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Header J2
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""""""""""""
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.. list-table::
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:widths: 5 5 5 35
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:header-rows: 1
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* - No.
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- Name
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- Type
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- Function
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* - 1
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- IO20
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- I/O
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- GPIO20
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* - 2
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- IO21
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- I/O
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- GPIO21, VSPIHD, EMAC_TX_EN
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* - 3
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- IO22
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- I/O
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- GPIO22, VSPIWP, U0RTS, EMAC_TXD1
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* - 4
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- IO19
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- I/O
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- GPIO19, VSPIQ, U0CTS, EMAC_TXD0
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* - 5
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- IO8
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- I/O
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- GPIO8, SD_DATA1, HS1_DATA1, U2CTS
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* - 6
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- IO7
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- I/O
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- GPIO7, SD_DATA0, HS1_DATA0, U2RTS
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* - 7
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- IO5
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- I/O
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- GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK
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* - 8
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- NC
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- \-
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- NC
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* - 9
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- NC
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- \-
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- NC
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* - 10
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- RXD0
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- I/O
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- GPIO3, U0RXD :ref:`(See 1) <get-started-pico-devkitm-2-pin-notes>`, CLK_OUT2
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* - 11
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- TXD0
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- I/O
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- GPIO1, U0TXD :ref:`(See 1) <get-started-pico-devkitm-2-pin-notes>`, CLK_OUT3, EMAC_RXD2
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* - 12
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- IO35
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- I
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- ADC1_CH7, RTC_GPIO5
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* - 13
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- IO34
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- I
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- ADC1_CH6, RTC_GPIO4
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* - 14
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- IO38
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- I
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- GPIO38, ADC1_CH2, RTC_GPIO2
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* - 15
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- IO37
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- I
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- GPIO37, ADC1_CH1, RTC_GPIO1
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* - 16
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- EN
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- I
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- CHIP_PU
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* - 17
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- GND
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- P
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- Ground
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* - 18
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- VDD33 (3V3)
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- P
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- 3.3 V power supply
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Header J3
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"""""""""""""
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.. list-table::
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:widths: 5 5 5 35
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:header-rows: 1
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* - No.
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- Name
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- Type
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- Function
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* - 1
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- GND
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- P
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- Ground
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* - 2
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- SENSOR_VP (FSVP)
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- I
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- GPIO36, ADC1_CH0, RTC_GPIO0
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* - 3
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- SENSOR_VN (FSVN)
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- I
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- GPIO39, ADC1_CH3, RTC_GPIO3
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* - 4
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- IO25
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- I/O
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- GPIO25, DAC_1, ADC2_CH8, RTC_GPIO6, EMAC_RXD0
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* - 5
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- IO26
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- I/O
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- GPIO26, DAC_2, ADC2_CH9, RTC_GPIO7, EMAC_RXD1
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* - 6
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- IO32
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- I/O
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- 32K_XP :ref:`(See 2a) <get-started-pico-devkitm-2-pin-notes>`, ADC1_CH4, TOUCH9, RTC_GPIO9
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* - 7
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- IO33
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- I/O
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- 32K_XN :ref:`(See 2b) <get-started-pico-devkitm-2-pin-notes>`, ADC1_CH5, TOUCH8, RTC_GPIO8
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* - 8
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- IO27
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- I/O
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- GPIO27, ADC2_CH7, TOUCH7, RTC_GPIO17, EMAC_RX_DV
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* - 9
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- IO14
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- I/O
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- ADC2_CH6, TOUCH6, RTC_GPIO16, MTMS, HSPICLK, HS2_CLK, SD_CLK, EMAC_TXD2
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* - 10
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- IO12
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- I/O
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- ADC2_CH5, TOUCH5, RTC_GPIO15, MTDI :ref:`(See 3) <get-started-pico-devkitm-2-pin-notes>`, HSPIQ, HS2_DATA2, SD_DATA2, EMAC_TXD3
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* - 11
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- IO13
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- I/O
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- ADC2_CH4, TOUCH4, RTC_GPIO14, MTCK, HSPID, HS2_DATA3, SD_DATA3, EMAC_RX_ER
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* - 12
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- IO15
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- I/O
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- ADC2_CH3, TOUCH3, RTC_GPIO13, MTDO, HSPICS0, HS2_CMD, SD_CMD, EMAC_RXD3
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* - 13
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- IO2
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- I/O
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- ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP, HS2_DATA0, SD_DATA0
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* - 14
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- IO4
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- I/O
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- ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1, SD_DATA1, EMAC_TX_ER
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* - 15
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- IO0
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- I/O
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- ADC2_CH1, TOUCH1, RTC_GPIO11, CLK_OUT1, EMAC_TX_CLK
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* - 16
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- VDD33 (3V3)
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- P
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- 3.3V power supply
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* - 17
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- GND
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- P
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- Ground
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* - 18
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- EXT_5V (5V)
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- P
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- 5V power supply
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.. _get-started-pico-devkitm-2-pin-notes:
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The following notes give more information about the items in the tables above.
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1. This pin is connected to the pin of the USB bridge chip on the board.
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2. 32.768 kHz crystal oscillator:
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a) input
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b) output
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3. The operating voltage of ESP32-PICO-DevKitM-2’s embedded SPI flash is 3.3 V. Therefore, the strapping pin MTDI should be pulled down during the module power-on reset. If connected, please make sure that this pin is not held up on reset.
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Pin Layout
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""""""""""""
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.. figure:: ../../../_static/esp32-pico-devkitm-2-pinout.png
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:align: center
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:scale: 50%
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:alt: ESP32-PICO-DevKitM-2 (click to enlarge)
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:figclass: align-center
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ESP32-PICO-DevKitM-2 Pin Layout (click to enlarge)
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Hardware Revision Details
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=========================
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No previous versions available.
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Related Documents
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=========================
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* `ESP32-PICO-MINI-02 Datasheet <https://www.espressif.com/sites/default/files/documentation/esp32-pico-mini-02_datasheet_en.pdf>`_ (PDF)
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* `Espressif Product Ordering Information <https://www.espressif.com/sites/default/files/documentation/espressif_products_ordering_information_en.pdf>`_ (PDF)
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* `ESP32-PICO-DevKitM-2 Schematic <https://dl.espressif.com/dl/schematics/SCH_ESP32-PICO-DEVKITM-2_V1_0_20200812A.pdf>`_ (PDF)
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* `ESP32-PICO-DevKitM-2 PCB Layout <https://dl.espressif.com/dl/schematics/PCB_ESP32-PICO-DevKitM-2_V1.0_20200812.pdf>`_ (PDF)
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For other design documentation for the board, please contact us at sales@espressif.com.
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