kopia lustrzana https://github.com/espressif/esp-idf
117 wiersze
2.6 KiB
PHP
117 wiersze
2.6 KiB
PHP
.. This file gets included from other .rst files in this folder.
|
||
.. It contains target-specific snippets.
|
||
.. Comments and '---' lines act as delimiters.
|
||
..
|
||
.. This is necessary mainly because RST doesn't support substitutions
|
||
.. (defined in RST, not in Python) inside code blocks. If that is ever implemented,
|
||
.. These code blocks can be moved back to the main .rst files, with target-specific
|
||
.. file names being replaced by substitutions.
|
||
|
||
.. gpio-summary
|
||
|
||
{IDF_TARGET_NAME} 芯片具有 21 个物理 GPIO 管脚（GPIO0 ~ GPIO20）。对于内置 SiP flash 的芯片型号，GPIO11 ~ GPIO17 专门用于连接 SiP flash。因此，对于这类芯片只有 14 个 GPIO 管脚可用。
|
||
|
||
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>`__]。
|
||
|
||
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。
|
||
|
||
.. list-table::
|
||
:header-rows: 1
|
||
:widths: 12 12 22
|
||
|
||
* - GPIO
|
||
- 模拟功能
|
||
- 注释
|
||
|
||
* - GPIO0
|
||
- ADC1_CH0
|
||
- RTC
|
||
|
||
* - GPIO1
|
||
- ADC1_CH1
|
||
- RTC
|
||
|
||
* - GPIO2
|
||
- ADC1_CH2
|
||
- RTC
|
||
|
||
* - GPIO3
|
||
- ADC1_CH3
|
||
- RTC
|
||
|
||
* - GPIO4
|
||
- ADC1_CH4
|
||
- RTC
|
||
|
||
* - GPIO5
|
||
-
|
||
- RTC
|
||
|
||
* - GPIO6
|
||
-
|
||
-
|
||
|
||
* - GPIO7
|
||
-
|
||
-
|
||
|
||
* - GPIO8
|
||
-
|
||
- Strapping 管脚
|
||
|
||
* - GPIO9
|
||
-
|
||
- Strapping 管脚
|
||
|
||
* - GPIO10
|
||
-
|
||
-
|
||
|
||
* - GPIO11
|
||
-
|
||
-
|
||
|
||
* - GPIO12
|
||
-
|
||
- SPI0/1
|
||
|
||
* - GPIO13
|
||
-
|
||
- SPI0/1
|
||
|
||
* - GPIO14
|
||
-
|
||
- SPI0/1
|
||
|
||
* - GPIO15
|
||
-
|
||
- SPI0/1
|
||
|
||
* - GPIO16
|
||
-
|
||
- SPI0/1
|
||
|
||
* - GPIO17
|
||
-
|
||
- SPI0/1
|
||
|
||
* - GPIO18
|
||
-
|
||
-
|
||
|
||
* - GPIO19
|
||
-
|
||
-
|
||
|
||
* - GPIO20
|
||
-
|
||
-
|
||
|
||
.. note::
|
||
|
||
- Strapping 管脚：GPIO8 和 GPIO9 是 Strapping 管脚。更多信息请参考 `ESP8684 技术规格书 <{IDF_TARGET_DATASHEET_CN_URL}>`_。
|
||
- SPI0/1：GPIO12-17 通常用于 SPI flash，不推荐用于其他用途。
|
||
- RTC：GPIO0-5 可用于将芯片从 Deep-sleep 模式中唤醒，其他 GPIO 仅能将芯片从 Light-sleep 模式中唤醒。更多信息请参考 :ref:`唤醒源<api-reference-wakeup-source>` 章节。
|
||
|
||
---
|