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370 lines
9.8 KiB
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370 lines
9.8 KiB
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ESP32-PICO-DevKitM-2
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**********************
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:link_to_translation:`en:[English]`
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概述
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======
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ESP32-PICO-DevKitM-2 是一款基于 `ESP32 <https://www.espressif.com/zh-hans/products/socs/esp32>`_ 的乐鑫开发板,板上搭载 `ESP32-PICO-MINI-02(02U) <https://www.espressif.com/zh-hans/products/modules>`_ 模组。ESP32-PICO-MINI-02(02U) 模组具备完整的 Wi-Fi 和蓝牙功能。
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ESP32-PICO-DevKitM-2 开发板同时集成了 USB-to-UART 桥接电路,方便开发人员直接通过 PC 的 USB 端口直接进行固件烧录和调试。
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为方便硬件连接,ESP32-PICO-MINI-02(02U) 上的所有 IO 信号和系统电源管脚均引出至开发板两侧焊盘 (18 x 0.1")。上述 18 个焊盘也均引出至排针,可使用杜邦线连接。
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.. note::
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ESP32-PICO-DevKitM-2 开发板默认采用排针。
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ESP32-PICO-DevKitM-2 为用户提供了基于 ESP32 芯片应用开发的硬件,更加方便用户探索 ESP32 芯片的功能。
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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 外观图(点击放大)
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本指南包括以下几个章节:
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- `快速入门`_:简要介绍 ESP32-PICO-DevKitM-2 开发板,以及上手这款开发板所需的软件配置;
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- `内含组件和包装方式`_:介绍零售订单和批量订单所提供的组件及包装方式;
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- `硬件参考`_:提供 ESP32-PICO-DevKitM-2 开发板硬件详细信息;
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- `硬件版本`_:介绍硬件历史版本(如有),已知问题(如有),并提供链接至历史版本开发板的入门指南(如有);
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- `相关文档`_:提供相关文档的链接。
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快速入门
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=========
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本节介绍了如何快速上手 ESP32-PICO-DevKitM-2。首先对 ESP32-PICO-DevKitM-2 开发板进行了简要介绍,然后在 `应用开发`_ 小节介绍如何将固件烧录至开发板。
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.. _get-started-pico-devkitm-2-board-front:
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组件描述
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----------
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ESP32-PICO-DevKitM-2 开发板的主要组件、接口及控制方式见下图。下文以板载 ESP32-PICO-MINI-02 的开发板为例进行说明。
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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 开发板组件布局 - 正面(点击放大)
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从左上角开始,按顺时针顺序,开发板主要组件的描述见下表。
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.. list-table::
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:widths: 10 25
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:header-rows: 1
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* - 主要组件
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- 描述
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* - ESP32-PICO-MINI-02
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- ESP32-PICO-DevKitM-2 开发板的板载模组,搭载 ESP32 SoC 芯片。用户也可选择板载 ESP32-PICO-MINI-02U 的开发板。
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* - LDO
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- 5V 转 3.3V 低压差稳压器
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* - USB-to-UART
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- CP2102N:单芯片 USB-to-UART 桥接器,数据传输速率可达 3 Mbps。
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* - Micro-B USB 接口
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- USB 接口。可为开发板供电,或连接 PC 进行 USB 通信。
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* - 5V Power On LED
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- 开发板上电后,红色指示灯亮起。更多信息,见 `相关文档`_ 中提供的原理图。
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* - I/O Connector
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- ESP32-PICO-MINI-02 上的管脚均已引出至开发板排针。用户可对 ESP32 进行编程,实现 PWM、ADC、DAC、I2C、I2S、SPI 等功能。更多信息,见章节 `管脚描述`_。
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* - BOOT 按键
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- 下载按键。按下 **Boot** 键并保持,同时按下 **EN** 键将进入固件下载模式,通过串口下载固件。
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* - EN 按键
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- 复位按键。
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应用开发
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---------
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上电前,请确保 ESP32-PICO-DevKitM-2 完好无损。
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所需硬件
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"""""""""""
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- 1 x ESP32-PICO-DevKitM-2 开发板
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- 1 x USB 2.0 A 转 Micro B 数据线
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- 1 x PC,运行 Windows、Linux 或 macOS 系统
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.. _user-guide-pico-devkitm-2-software-setup:
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软件配置
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"""""""""""
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请前往 :doc:`../../get-started/index`,在 :ref:`get-started-step-by-step` 一节查看如何快速配置开发环境,将应用程序烧录至 ESP32-PICO-DevKitM-2 开发板。
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内含组件和包装方式
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===================
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零售订单
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----------
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如购买样品,每个 ESP32-PICO-DevKitM-2 将单独包装。
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零售订单,请前往 https://www.espressif.com/en/contact-us/get-samples。
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批量订单
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-----------
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如批量购买,ESP32-PICO-DevKitM-2 开发板将以大纸板箱包装。
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批量订单请前往 https://www.espressif.com/zh-hans/contact-us/sales-questions。
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硬件参考
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=============
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功能框图
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-----------
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ESP32-PICO-DevKitM-2 的主要组件和连接方式如下图所示。
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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 功能框图(点击放大)
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供电方式
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------------
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开发板提供以下三种供电方式,可任意选择一种:
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* Micro USB 供电(默认)
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* 5V/GND 管脚供电
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* 3V3/GND 管脚供电
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.. warning::
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上述供电方式只能选择一种方式,不能同时选择,否则可能会损坏开发板和/或电源。
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管脚描述
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---------
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:ref:`get-started-pico-devkitm-2-board-front` 中所示的开发板两侧 I/O 管脚,其具体名称和功能见下表。管脚名称和编号与 `相关文档`_ 中原理图保持一致。
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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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* - 编号
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- 名称
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- 类型
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- 功能
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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:`(见注解 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:`(见注解 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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- 接地
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* - 18
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- VDD33 (3V3)
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- P
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- 3.3 V 供电
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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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* - 编号
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- 名称
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- 类型
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- 功能
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* - 1
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- GND
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- P
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- 接地
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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:`(见注解 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:`(见注解 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:`(见注解 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 供电
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* - 17
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- GND
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- P
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- 接地
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* - 18
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- EXT_5V (5V)
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- P
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- 5V 供电
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.. _get-started-pico-devkitm-2-pin-notes:
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.. note::
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1. 该管脚已连接至板上 USB 桥接器芯片;
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2. 32.768 kHz 晶振输入输出管脚:
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(a) 输入管脚;
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(b) 输出管脚;
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3. ESP32-PICO-DevKitM-2 内置 SPI flash 的工作电压为 3.3 V。因此,Strapping 管脚 MTDI 在上电复位过程中应拉低。如果连接了该管脚,请确保该管脚在复位中不要拉高。
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管脚布局
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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 管脚布局(点击放大)
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硬件版本
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==========
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该开发板为最新硬件,尚未有历史版本。
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相关文档
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=========
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* `ESP32-PICO-MINI-02 & ESP32-PICO-MINI-02U 技术规格书 <https://www.espressif.com/sites/default/files/documentation/esp32-pico-mini-02_datasheet_cn.pdf>`_ (PDF)
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* `乐鑫产品选型工具 <https://products.espressif.com/#/product-selector?names=>`_
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* `ESP32-PICO-DevKitM-2 原理图 <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 布局图 <https://dl.espressif.com/dl/schematics/PCB_ESP32-PICO-DevKitM-2_V1.0_20200812.pdf>`_ (PDF)
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有关本开发板的更多设计文档,请联系我们的商务部门 sales@espressif.com。
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