2022-11-09 03:11:36 -05:00
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.. 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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{IDF_TARGET_NAME} 芯片具有 45 个物理 GPIO 管脚(GPIO0 ~ GPIO21 和 GPIO26 ~ GPIO48)。每个管脚都可用作一个通用 IO,或连接一个内部外设信号。通过 GPIO 交换矩阵、IO MUX 和 RTC IO MUX,可配置外设模块的输入信号来源于任何的 GPIO 管脚,并且外设模块的输出信号也可连接到任意 GPIO 管脚。这些模块共同组成了芯片的输入输出控制。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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- RTC GPIO
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- 注释
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* - GPIO0
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-
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- RTC_GPIO0
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- Strapping 管脚
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* - GPIO1
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- ADC1_CH0
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- RTC_GPIO1
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-
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* - GPIO2
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- ADC1_CH1
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- RTC_GPIO2
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-
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* - GPIO3
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- ADC1_CH2
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- RTC_GPIO3
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- Strapping 管脚
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* - GPIO4
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- ADC1_CH3
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- RTC_GPIO4
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-
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* - GPIO5
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- ADC1_CH4
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- RTC_GPIO5
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-
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* - GPIO6
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- ADC1_CH5
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- RTC_GPIO6
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-
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* - GPIO7
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- ADC1_CH6
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- RTC_GPIO7
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-
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* - GPIO8
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- ADC1_CH7
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- RTC_GPIO8
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-
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* - GPIO9
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- ADC1_CH8
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- RTC_GPIO9
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-
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* - GPIO10
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- ADC1_CH9
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- RTC_GPIO10
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-
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* - GPIO11
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- ADC2_CH0
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- RTC_GPIO11
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-
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* - GPIO12
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- ADC2_CH1
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- RTC_GPIO12
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-
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* - GPIO13
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- ADC2_CH2
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- RTC_GPIO13
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-
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* - GPIO14
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- ADC2_CH3
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- RTC_GPIO14
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-
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* - GPIO15
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- ADC2_CH4
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- RTC_GPIO15
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-
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* - GPIO16
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- ADC2_CH5
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- RTC_GPIO16
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-
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* - GPIO17
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- ADC2_CH6
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- RTC_GPIO17
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-
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* - GPIO18
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- ADC2_CH7
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- RTC_GPIO18
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-
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* - GPIO19
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- ADC2_CH8
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- RTC_GPIO19
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- USB-JTAG
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* - GPIO20
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- ADC2_CH9
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- RTC_GPIO20
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- USB-JTAG
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* - GPIO21
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-
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- RTC_GPIO21
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-
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* - GPIO26
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-
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-
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- SPI0/1
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* - GPIO27
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-
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-
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- SPI0/1
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* - GPIO28
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-
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-
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- SPI0/1
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* - GPIO29
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-
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-
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- SPI0/1
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* - GPIO30
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-
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-
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- SPI0/1
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* - GPIO31
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-
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-
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- SPI0/1
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* - GPIO32
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-
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-
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- SPI0/1
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* - GPIO33
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-
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-
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- SPI0/1
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* - GPIO34
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-
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-
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- SPI0/1
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* - GPIO35
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-
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-
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- SPI0/1
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* - GPIO36
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-
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-
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- SPI0/1
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* - GPIO37
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-
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-
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- SPI0/1
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* - GPIO38
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-
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* - GPIO39
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-
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* - GPIO40
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-
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-
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* - GPIO41
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-
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-
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* - GPIO42
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-
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* - GPIO43
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-
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* - GPIO44
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-
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* - GPIO45
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-
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-
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- Strapping 管脚
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* - GPIO46
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-
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-
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- Strapping 管脚
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* - GPIO47
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-
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* - GPIO48
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.. Note::
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2023-03-13 22:18:22 -04:00
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- Strapping 管脚:GPIO0、GPIO3、GPIO45 和 GPIO46 是 Strapping 管脚。更多信息请参考 `ESP32-S3 技术规格书 <{IDF_TARGET_DATASHEET_CN_URL}>`_。
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2024-04-10 03:31:06 -04:00
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- SPI0/1:GPIO26 ~ GPIO32 通常用于 SPI flash 和 PSRAM,不推荐用于其他用途。当使用八线 flash 或八线 PSRAM 或同时使用两者时,GPIO33 ~ GPIO37 会连接到 SPIIO4 ~ SPIIO7 和 SPIDQS。因此,对于内嵌 ESP32-S3R8 或 ESP32-S3R8V 芯片的开发板,GPIO33 ~ GPIO37 也不推荐用于其他用途。
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- USB-JTAG:GPIO19 和 GPIO20 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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2022-11-09 03:11:36 -05:00
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---
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