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@@ -6,33 +6,796 @@ Overview
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.. only:: esp32
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- The {IDF_TARGET_NAME} chip features 34 physical GPIO pads. Some GPIO pads cannot be used or do not have the corresponding pin on the chip package. For more details, see *{IDF_TARGET_NAME} Technical Reference Manual* > *IO MUX and GPIO Matrix (GPIO, IO_MUX)* [`PDF <{IDF_TARGET_TRM_EN_URL}#iomuxgpio>`__]. Each pad can be used as a general purpose I/O or can be connected to an internal peripheral signal.
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+ The {IDF_TARGET_NAME} chip features 34 physical GPIO pads. Some GPIO pads cannot be used or do not have the corresponding pin on the chip package. For more details, see *{IDF_TARGET_NAME} Technical Reference Manual* > *IO MUX and GPIO Matrix (GPIO, IO_MUX)* [`PDF <{IDF_TARGET_TRM_EN_URL}#iomuxgpio>`__].
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+
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+ Each pad can be used as a general purpose I/O or can be connected to an internal peripheral signal. The table below provides more information on pin usage, and please note the comments in the table for GPIOs with restrictions.
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+
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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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+
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+ * - GPIO
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+ - Analog Function
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+ - RTC GPIO
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+ - Comments
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+
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+ * - GPIO0
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+ - ADC2_CH1
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+ - RTC_GPIO11
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+ - Strapping pin
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+
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+ * - GPIO1
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+ -
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+ -
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+ - TXD
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+
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+ * - GPIO2
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+ - ADC2_CH2
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+ - RTC_GPIO12
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+ - Strapping pin
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+
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+ * - GPIO3
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+ -
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+ -
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+ - RXD
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+
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+ * - GPIO4
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+ - ADC2_CH0
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+ - RTC_GPIO10
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+ -
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+
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+ * - GPIO5
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+ -
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+ -
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+ - Strapping pin
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+
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+ * - GPIO6
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO7
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO8
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO9
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO10
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO11
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO12
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+ - ADC2_CH5
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+ - RTC_GPIO15
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+ - Strapping pin; JTAG
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+
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+ * - GPIO13
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+ - ADC2_CH4
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+ - RTC_GPIO14
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+ - JTAG
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+
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+ * - GPIO14
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+ - ADC2_CH6
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+ - RTC_GPIO16
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+ - JTAG
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+
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+ * - GPIO15
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+ - ADC2_CH3
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+ - RTC_GPIO13
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+ - Strapping pin; JTAG
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+
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+ * - GPIO16
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO17
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO18
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+ -
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+ -
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+ -
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+
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+ * - GPIO19
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+ -
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+ -
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+ -
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+
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+ * - GPIO21
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+ -
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+ -
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+ -
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+
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+ * - GPIO22
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+ -
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+ -
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+ -
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+
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+ * - GPIO23
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+ -
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+ -
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+ -
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+
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+ * - GPIO25
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+ - ADC2_CH8
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+ - RTC_GPIO6
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+ -
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+
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+ * - GPIO26
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+ - ADC2_CH9
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+ - RTC_GPIO7
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+ -
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+
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+ * - GPIO27
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+ - ADC2_CH7
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+ - RTC_GPIO17
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+ -
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+
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+ * - GPIO32
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+ - ADC1_CH4
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+ - RTC_GPIO9
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+ -
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+
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+ * - GPIO33
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+ - ADC1_CH5
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+ - RTC_GPIO8
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+ -
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+
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+ * - GPIO34
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+ - ADC1_CH6
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+ - RTC_GPIO4
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+ - GPI
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+
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+ * - GPIO35
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+ - ADC1_CH7
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+ - RTC_GPIO5
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+ - GPI
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+
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+ * - GPIO36
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+ - ADC1_CH0
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+ - RTC_GPIO0
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+ - GPI
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+
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+ * - GPIO37
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+ - ADC1_CH1
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+ - RTC_GPIO1
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+ - GPI
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+
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+ * - GPIO38
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+ - ADC1_CH2
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+ - RTC_GPIO2
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+ - GPI
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+
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+ * - GPIO39
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+ - ADC1_CH3
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+ - RTC_GPIO3
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+ - GPI
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+
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+ .. note::
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+
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+ - Strapping pin: GPIO0, GPIO2, GPIO5, GPIO12 (MTDI), and GPIO15 (MTDO) are strapping pins. For more infomation, please refer to `ESP32 datasheet <https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf>`_.
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+ - SPI0/1: GPIO6-11 and GPIO16-17 are usually connected to the SPI flash and PSRAM integrated on the module and therefore should not be used for other purposes.
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+ - JTAG: GPIO12-15 are usually used for inline debug.
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+ - GPI: GPIO34-39 can only be set as input mode and do not have software-enabled pullup or pulldown functions.
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+ - TXD & RXD are usually used for flashing and debugging.
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+ - ADC2: ADC2 pins cannot be used when Wi-Fi is used. So, if you’re using Wi-Fi and you’re having trouble getting the value from an ADC2 GPIO, you may consider using an ADC1 GPIO instead, that should solve your problem. For more details, please refer to `ADC limitations <https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/adc.html#adc-limitations>`_.
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- - Note that GPIO6-11 are usually used for SPI flash.
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- - GPIO34-39 can only be set as input mode and do not have software pullup or pulldown functions.
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.. only:: esp32s2
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The {IDF_TARGET_NAME} chip features 43 physical GPIO pads. Some GPIO pads cannot be used or do not have the corresponding pin on the chip package. For more details, see *{IDF_TARGET_NAME} Technical Reference Manual* > *IO MUX and GPIO Matrix (GPIO, IO_MUX)* [`PDF <{IDF_TARGET_TRM_EN_URL}#iomuxgpio>`__]. Each pad can be used as a general purpose I/O or can be connected to an internal peripheral signal.
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- - Note that GPIO26-32 are usually used for SPI flash.
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- - GPIO46 is fixed to pull-down and is input only
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+ The table below provides more information on pin usage, and please note the comments in the table for GPIOs with restrictions.
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+
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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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+
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+ * - GPIO
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+ - Analog Function
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+ - RTC GPIO
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+ - Comment
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+
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+ * - GPIO0
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+ -
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+ - RTC_GPIO0
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+ - Strapping pin
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+
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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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+
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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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+
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+ * - GPIO3
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+ - ADC1_CH2
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+ - RTC_GPIO3
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+ -
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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+ * - GPIO19
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+ - ADC2_CH8
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+ - RTC_GPIO19
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+ -
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+
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+ * - GPIO20
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+ - ADC2_CH9
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+ - RTC_GPIO20
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+ -
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+
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+ * - GPIO21
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+ -
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+ - RTC_GPIO21
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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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+ - SPI0/1
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+
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+ * - GPIO27
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO28
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO29
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO30
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO31
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+ -
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+ -
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+ - SPI0/1
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+
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+ * - GPIO32
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+ -
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+ -
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+ - SPI0/1
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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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+
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+ * - GPIO34
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+ -
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+ -
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+ -
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+
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+ * - GPIO35
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+ -
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+ -
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+ -
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+
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+ * - GPIO36
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+ -
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+ -
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+ -
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+
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+ * - GPIO37
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+ -
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+ -
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+ -
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+
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+ * - GPIO38
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+ -
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+ -
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+ -
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+
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+ * - GPIO39
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+ -
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+ -
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+ - JTAG
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+
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+ * - GPIO40
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+ -
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+ -
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+ - JTAG
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+
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+ * - GPIO41
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+ -
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+ -
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+ - JTAG
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+
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+ * - GPIO42
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+ -
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+ -
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+ - JTAG
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+
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+ * - GPIO43
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+ -
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+ -
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+ -
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+
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+ * - GPIO44
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+ -
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+ -
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+ -
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+
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+ * - GPIO45
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+ -
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+ -
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+ - Strapping pin
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+
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+ * - GPIO46
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+ -
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+ -
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+ - GPI；Strapping pin
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+
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+ .. note::
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+
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+ - Strapping pin: GPIO0, GPIO45 and GPIO46 are strapping pins. For more infomation, please refer to `ESP32-S2 datasheet <https://www.espressif.com/sites/default/files/documentation/esp32-s2_datasheet_en.pdf>`_
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+ - SPI0/1: GPIO26-32 are usually used for SPI flash and PSRAM and not recommended for other uses.
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+ - JTAG: GPIO39-42 are usually used for inline debug.
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+ - GPI: GPIO46 is fixed to pull-down and is input only.
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+
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.. only:: esp32c3
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The {IDF_TARGET_NAME} chip features 22 physical GPIO pads. Some GPIO pads cannot be used or do not have the corresponding pin on the chip package. For more details, see *{IDF_TARGET_NAME} Technical Reference Manual* > *IO MUX and GPIO Matrix (GPIO, IO_MUX)* [`PDF <{IDF_TARGET_TRM_EN_URL}#iomuxgpio>`__]. Each pad can be used as a general purpose I/O or can be connected to an internal peripheral signal.
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- - Note that GPIO12-17 are usually used for SPI flash.
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- - Note that GPIO 18 and 19 are used by USB-JTAG by default. In order to use them as GPIOs, USB-JTAG will be disabled by the drivers.
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- - {IDF_TARGET_NAME} doesn't have separate "RTC GPIO" support. However, GPIO0-5 keep the rtc feature, which can be used for power-management and analog subsystem.
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+ The table below provides more information on pin usage, and please note the comments in the table for GPIOs with restrictions.
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+
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+
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+ .. list-table::
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+ :header-rows: 1
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+ :widths: 12 12 22
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+
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+ * - GPIO
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+ - Analog Function
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+ - Comment
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+
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+ * - GPIO0
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+ - ADC1_CH0
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+ - RTC
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+
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+ * - GPIO1
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+ - ADC1_CH1
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+ - RTC
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+
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+ * - GPIO2
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+ - ADC1_CH2
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+ - Strapping pin；RTC
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+
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+ * - GPIO3
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+ - ADC1_CH3
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+ - RTC
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+
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+ * - GPIO4
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+ - ADC1_CH4
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+ - RTC
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+
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+ * - GPIO5
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+ - ADC2_CH0
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+ - RTC
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+
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+ * - GPIO6
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+ -
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+ -
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+
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+ * - GPIO7
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+ -
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+ -
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+
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+ * - GPIO8
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+ -
|
|
|
+ - Strapping pin
|
|
|
+
|
|
|
+ * - GPIO9
|
|
|
+ -
|
|
|
+ - Strapping pin
|
|
|
+
|
|
|
+ * - GPIO10
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO11
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO12
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO13
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO14
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO15
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO16
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO17
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO18
|
|
|
+ -
|
|
|
+ - USB-JTAG
|
|
|
+
|
|
|
+ * - GPIO19
|
|
|
+ -
|
|
|
+ - USB-JTAG
|
|
|
+
|
|
|
+ * - GPIO20
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO21
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ .. note::
|
|
|
+
|
|
|
+ - Strapping pin: GPIO2, GPIO8 and GPIO9 are strapping pins. For more infomation, please refer to `ESP32-C3 datasheet <https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf>`_.
|
|
|
+ - SPI0/1: GPIO12-17 are usually used for SPI flash and PSRAM and not recommended for other uses.
|
|
|
+ - USB-JTAG: GPIO 18 and 19 are used by USB-JTAG by default. In order to use them as GPIOs, USB-JTAG will be disabled by the drivers.
|
|
|
+ - RTC: GPIO0-5 can be used when in deep sleep.
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
|
|
|
.. only:: esp32s3
|
|
|
|
|
|
The {IDF_TARGET_NAME} chip features 45 physical GPIO pads. Some GPIO pads cannot be used or do not have the corresponding pin on the chip package. For more details, see *{IDF_TARGET_NAME} Technical Reference Manual* > *IO MUX and GPIO Matrix (GPIO, IO_MUX)* [`PDF <{IDF_TARGET_TRM_EN_URL}#iomuxgpio>`__]. Each pad can be used as a general purpose I/O or can be connected to an internal peripheral signal.
|
|
|
|
|
|
- - Note that GPIO26-32 are usually used for SPI flash.
|
|
|
- - Note that GPIO 19 and 20 are used by USB-JTAG by default. In order to use them as GPIOs, USB-JTAG will be disabled by the drivers.
|
|
|
- - Note that when using SPI eight-line mode, GPIO33~37 are connected to IO4~IO7 and DQS. On ESP32-S3R8 / ESP32-S3R8V board GPIO33~37 are not recommended for other uses.
|
|
|
+ The table below provides more information on pin usage, and please note the comments in the table for GPIOs with restrictions.
|
|
|
+
|
|
|
+ .. list-table::
|
|
|
+ :header-rows: 1
|
|
|
+ :widths: 8 12 12 20
|
|
|
+
|
|
|
+ * - GPIO
|
|
|
+ - Analog Function
|
|
|
+ - RTC GPIO
|
|
|
+ - Comment
|
|
|
+
|
|
|
+ * - GPIO0
|
|
|
+ -
|
|
|
+ - RTC_GPIO0
|
|
|
+ - Strapping pin
|
|
|
+
|
|
|
+ * - GPIO1
|
|
|
+ - ADC1_CH0
|
|
|
+ - RTC_GPIO1
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO2
|
|
|
+ - ADC1_CH1
|
|
|
+ - RTC_GPIO2
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO3
|
|
|
+ - ADC1_CH2
|
|
|
+ - RTC_GPIO3
|
|
|
+ - Strapping pin
|
|
|
+
|
|
|
+ * - GPIO4
|
|
|
+ - ADC1_CH3
|
|
|
+ - RTC_GPIO4
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO5
|
|
|
+ - ADC1_CH4
|
|
|
+ - RTC_GPIO5
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO6
|
|
|
+ - ADC1_CH5
|
|
|
+ - RTC_GPIO6
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO7
|
|
|
+ - ADC1_CH6
|
|
|
+ - RTC_GPIO7
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO8
|
|
|
+ - ADC1_CH7
|
|
|
+ - RTC_GPIO8
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO9
|
|
|
+ - ADC1_CH8
|
|
|
+ - RTC_GPIO9
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO10
|
|
|
+ - ADC1_CH9
|
|
|
+ - RTC_GPIO10
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO11
|
|
|
+ - ADC2_CH0
|
|
|
+ - RTC_GPIO11
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO12
|
|
|
+ - ADC2_CH1
|
|
|
+ - RTC_GPIO12
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO13
|
|
|
+ - ADC2_CH2
|
|
|
+ - RTC_GPIO13
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO14
|
|
|
+ - ADC2_CH3
|
|
|
+ - RTC_GPIO14
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO15
|
|
|
+ - ADC2_CH4
|
|
|
+ - RTC_GPIO15
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO16
|
|
|
+ - ADC2_CH5
|
|
|
+ - RTC_GPIO16
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO17
|
|
|
+ - ADC2_CH6
|
|
|
+ - RTC_GPIO17
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO18
|
|
|
+ - ADC2_CH7
|
|
|
+ - RTC_GPIO18
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO19
|
|
|
+ - ADC2_CH8
|
|
|
+ - RTC_GPIO19
|
|
|
+ - USB-JTAG
|
|
|
+
|
|
|
+ * - GPIO20
|
|
|
+ - ADC2_CH9
|
|
|
+ - RTC_GPIO20
|
|
|
+ - USB-JTAG
|
|
|
+
|
|
|
+ * - GPIO21
|
|
|
+ -
|
|
|
+ - RTC_GPIO21
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO26
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO27
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO28
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO29
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO30
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO31
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO32
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO33
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO34
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO35
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO36
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO37
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - SPI0/1
|
|
|
+
|
|
|
+ * - GPIO38
|
|
|
+ -
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO39
|
|
|
+ -
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO40
|
|
|
+ -
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO41
|
|
|
+ -
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO42
|
|
|
+ -
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO43
|
|
|
+ -
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO44
|
|
|
+ -
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO45
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - Strapping pin
|
|
|
+
|
|
|
+ * - GPIO46
|
|
|
+ -
|
|
|
+ -
|
|
|
+ - Strapping pin
|
|
|
+
|
|
|
+ * - GPIO47
|
|
|
+ -
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ * - GPIO48
|
|
|
+ -
|
|
|
+ -
|
|
|
+ -
|
|
|
+
|
|
|
+ .. Note::
|
|
|
+
|
|
|
+ - Strapping pin: GPIO0, GPIO3, GPIO45 and GPIO46 are strapping pins.
|
|
|
+ - SPI0/1: GPIO26-32 are usually used for SPI flash and PSRAM and not recommended for other uses. When using Octal Flash or Octal PSRAM or both, GPIO33~37 are connected to SPIIO4 ~ SPIIO7 and SPIDQS. Therefore on ESP32-S3R8 / ESP32-S3R8V board GPIO33~37 are also not recommended for other uses.
|
|
|
+ - USB-JTAG: GPIO 19 and 20 are used by USB-JTAG by default. In order to use them as GPIOs, USB-JTAG will be disabled by the drivers.
|
|
|
+
|
|
|
|
|
|
.. only:: SOC_RTCIO_INPUT_OUTPUT_SUPPORTED
|
|
|
|
|
|
@@ -63,5 +826,3 @@ API Reference - Normal GPIO
|
|
|
|
|
|
.. include-build-file:: inc/rtc_io.inc
|
|
|
.. include-build-file:: inc/rtc_io_types.inc
|
|
|
-
|
|
|
-
|
daiziyan