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docs(gpio): removed strapping description in programming guide

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Closes https://github.com/espressif/esp-idf/issues/18969
This commit is contained in:
Chen Chen
2026-08-25 16:14:23 +08:00
parent 44008286d6
commit 7498698e18
26 changed files with 146 additions and 792 deletions
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docs/en/api-reference/peripherals/gpio/esp32h2.inc
+9 -20
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@@ -24,42 +24,35 @@ The table below provides more information on pin usage, and please note the comm
* - GPIO0
-
-
* - GPIO1
- ADC1_CH0
-
* - GPIO2
- ADC1_CH1
- Strapping pin
-
* - GPIO3
- ADC1_CH2
- Strapping pin
-
* - GPIO4
- ADC1_CH3
-
* - GPIO5
- ADC1_CH4
-
* - GPIO6
-
-
* - GPIO7
-
- RTC
* - GPIO8
-
- Strapping pin, RTC
- RTC
* - GPIO9
-
- Strapping pin, RTC
- RTC
* - GPIO10
- ANA_CMPR_CH0 reference voltage
@@ -112,19 +105,15 @@ The table below provides more information on pin usage, and please note the comm
* - GPIO22
-
-
* - GPIO23
-
-
* - GPIO24
-
-
* - GPIO25
-
- Strapping pin
-
* - GPIO26
-
- USB-JTAG
@@ -135,10 +124,10 @@ The table below provides more information on pin usage, and please note the comm
.. note::
- Strapping pin: GPIO2, GPIO3, GPIO8, GPIO9, and GPIO25 are strapping pins. For more information, please refer to `ESP32H2 datasheet <{IDF_TARGET_DATASHEET_EN_URL}>`_.
- SPI0/1: GPIO15-21 are usually used for SPI flash and not recommended for other uses.
- USB-Serial-JTAG: GPIO 26 and 27 are used by USB-Serial-JTAG by default. In order to use them as GPIOs, USB-Serial-JTAG will be disabled by the drivers.
- For chip variants with an SiP flash built in, GPIO15–GPIO21 are dedicated to connecting the SiP flash and are not fan-out to the external pins. In addition, GPIO6–GPIO7 are also not fan-out to the external pins. In conclusion, only GPIO0–GPIO5, GPIO8–GPIO14, GPIO22–GPIO27 are available to users.
- Strapping pin: Some pins are used as strapping pins. For more information, please refer to *{IDF_TARGET_NAME} datasheet* > *Boot Configurations* [`PDF <{IDF_TARGET_DATASHEET_EN_URL}#cd-pins-strap>`__].
- SPI0/1: GPIO15-21 are usually used for SPI flash and not recommended for other uses.
- USB-Serial-JTAG: GPIO 26 and 27 are used by USB-Serial-JTAG by default. In order to use them as GPIOs, USB-Serial-JTAG will be disabled by the drivers.
- For chip variants with an SiP flash built in, the SPI0/1 pins and GPIO6–GPIO7 are not led out. In conclusion, only GPIO0–GPIO5, GPIO8–GPIO14, GPIO22–GPIO27 are available to users.
- RTC: GPIO7–GPIO14 can be used to wake up the chip from Deep-sleep mode. Note that although GPIO7 is an RTC GPIO, it cannot be used for external wake-up since it is not led out. Other GPIOs can only wake up the chip from Light-sleep mode. For more information, please refer to Section :ref:`Wakeup Sources <api-reference-wakeup-source>`.
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