2023-07-18 05:44:14 -04:00
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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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2023-12-19 09:31:14 -05:00
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{IDF_TARGET_NAME} 芯片具有 55 个物理 GPIO 管脚(GPIO0 ~ GPIO54)。
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2023-07-18 05:44:14 -04:00
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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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-
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- LP_GPIO0
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-
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* - GPIO1
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-
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- LP_GPIO1
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-
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* - GPIO2
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- TOUCH0
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- LP_GPIO2
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-
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* - GPIO3
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- TOUCH1
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- LP_GPIO3
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-
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* - GPIO4
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- TOUCH2
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- LP_GPIO4
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-
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* - GPIO5
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- TOUCH3
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- LP_GPIO5
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-
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* - GPIO6
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- TOUCH4
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- LP_GPIO6
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-
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* - GPIO7
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- TOUCH5
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- LP_GPIO7
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-
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* - GPIO8
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- TOUCH6
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- LP_GPIO8
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-
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* - GPIO9
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- TOUCH7
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- LP_GPIO9
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-
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* - GPIO10
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- TOUCH8
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- LP_GPIO10
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-
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* - GPIO11
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- TOUCH9
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- LP_GPIO11
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-
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* - GPIO12
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- TOUCH10
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- LP_GPIO12
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-
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* - GPIO13
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- TOUCH11
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- LP_GPIO13
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-
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* - GPIO14
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- TOUCH12
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- LP_GPIO14
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-
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* - GPIO15
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- TOUCH13
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- LP_GPIO15
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-
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* - GPIO16
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- ADC1_CH0
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-
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-
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* - GPIO17
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- ADC1_CH1
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-
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-
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* - GPIO18
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- ADC1_CH2
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-
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-
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* - GPIO19
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- ADC1_CH3
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-
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-
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* - GPIO20
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- ADC1_CH4
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-
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-
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* - GPIO21
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- ADC1_CH5
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-
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-
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* - GPIO22
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- ADC1_CH6
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-
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-
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* - GPIO23
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- ADC1_CH7
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-
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-
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* - GPIO24
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-
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-
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-
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* - GPIO25
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-
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-
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-
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* - GPIO26
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-
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-
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-
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* - GPIO27
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-
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-
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-
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* - GPIO28
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-
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-
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* - GPIO29
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-
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-
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* - GPIO30
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-
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-
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-
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* - GPIO31
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-
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-
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-
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* - GPIO32
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-
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-
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* - GPIO33
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-
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-
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-
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* - GPIO34
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-
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-
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- Strapping 管脚
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* - GPIO35
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-
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-
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- Strapping 管脚
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* - GPIO36
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-
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-
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- Strapping 管脚
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* - GPIO37
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-
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-
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- Strapping 管脚
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* - GPIO38
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-
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-
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- Strapping 管脚
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* - GPIO39
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-
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-
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-
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* - GPIO40
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-
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* - GPIO41
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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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* - GPIO46
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-
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* - GPIO47
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-
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* - GPIO48
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-
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* - GPIO49
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- ADC1_CH8
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-
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-
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* - GPIO50
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- ADC1_CH9
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-
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-
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* - GPIO51
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- ADC1_CH10,ANA_CMPR_CH0 外部参考电压
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-
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* - GPIO52
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- ADC1_CH11,ANA_CMPR_CH0 同相输入
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* - GPIO53
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- ADC1_CH12,ANA_CMPR_CH1 外部参考电压
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-
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* - GPIO54
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- ADC1_CH13,ANA_CMPR_CH1 同相输入
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-
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.. note::
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- Strapping 管脚:GPIO34, GPIO35、GPIO36、GPIO37 和 GPIO38 是 Strapping 管脚。更多信息请参考 `ESP32-P4 技术规格书 <{IDF_TARGET_DATASHEET_CN_URL}>`_。
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- USB-JTAG:GPIO24 和 GPIO25 默认用于 USB-JTAG。用做 GPIO 时驱动程序将禁用 USB-JTAG。
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---
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