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169 lines
3.1 KiB
PHP
169 lines
3.1 KiB
PHP
.. This file gets included from other .rst files in this folder.
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.. It contains target-specific snippets.
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.. Comments and '---' lines act as delimiters.
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..
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.. This is necessary mainly because RST doesn't support substitutions
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.. (defined in RST, not in Python) inside code blocks. If that is ever implemented,
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.. These code blocks can be moved back to the main .rst files, with target-specific
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.. file names being replaced by substitutions.
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.. gpio-summary
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当前的 GPIO 适用于 {IDF_TARGET_NAME} beta3 版本。{IDF_TARGET_NAME} MP 版本将会增加 2 个可用的 IO，并且一些引脚功能将会改变。{IDF_TARGET_NAME} MP 版本将会在以后更新。
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{IDF_TARGET_NAME} 芯片具有 27 个物理 GPIO 管脚（GPIO0 ~ GPIO26）。每个管脚都可用作一个通用 IO，或连接一个内部的外设信号。通过 GPIO 交换矩阵和 IO MUX，可配置外设模块的输入信号来源于任何的 IO 管脚，并且外设模块的输出信号也可连接到任意 IO 管脚。这些模块共同组成了芯片的 IO 控制。更多详细信息，请参阅 *{IDF_TARGET_NAME} 技术参考手册* > *IO MUX 和 GPIO 矩阵（GPIO、IO_MUX）* [`PDF <{IDF_TARGET_TRM_CN_URL}#iomuxgpio>`__]。
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下表提供了各管脚的详细信息，部分 GPIO 具有特殊的使用限制，具体可参考表中的注释列。
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.. list-table::
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:header-rows: 1
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:widths: 8 12 12 20
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* - GPIO
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- 模拟功能
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- LP GPIO
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- 注释
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* - GPIO0
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- LP_GPIO0
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-
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-
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* - GPIO1
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- ADC1_CH0
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- LP_GPIO1
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-
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* - GPIO2
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- ADC1_CH1
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- LP_GPIO2
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- Strapping 管脚
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* - GPIO3
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- ADC1_CH2
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- LP_GPIO3
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- Strapping 管脚
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* - GPIO4
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- ADC1_CH3
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- LP_GPIO4
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-
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* - GPIO5
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- ADC1_CH4
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- LP_GPIO5
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-
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* - GPIO6
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- ADC1_CH5
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- LP_GPIO6
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- Strapping 管脚
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* - GPIO7
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-
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- LP_GPIO7
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- Strapping 管脚
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* - GPIO8
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-
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-
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-
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* - GPIO9
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-
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-
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-
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* - GPIO10
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-
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-
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-
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* - GPIO11
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-
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-
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-
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* - GPIO12
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-
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-
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-
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* - GPIO13
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-
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-
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-
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* - GPIO14
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-
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-
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-
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* - GPIO15
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-
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-
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-
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* - GPIO16
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-
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-
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-
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* - GPIO17
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-
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-
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-
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* - GPIO18
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-
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-
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- SPI0/1
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* - GPIO19
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-
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-
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- SPI0/1
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* - GPIO20
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-
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-
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- SPI0/1
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* - GPIO21
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-
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-
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- SPI0/1
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* - GPIO22
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-
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-
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- SPI0/1
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* - GPIO23
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-
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-
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- SPI0/1
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* - GPIO24
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-
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-
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- SPI0/1
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* - GPIO25
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-
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-
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- USB-JTAG
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* - GPIO26
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-
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-
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- USB-JTAG
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.. note::
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- Strapping 管脚：GPIO2、GPIO3、GPIO6 和 GPIO7 是 Strapping 管脚。更多信息请参考 `ESP32-C5 技术规格书 <{IDF_TARGET_DATASHEET_CN_URL}>`_。
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- SPI0/1：GPIO18 ~ GPIO24 通常用于 SPI flash，不推荐用于其他用途。
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- USB-JTAG：GPIO25 和 GPIO26 默认用于 USB-JTAG。如果将它们配置为普通 GPIO，驱动程序将禁用 USB-JTAG 功能。
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---
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