feat(esp32h21): support GPIO on esp32h21

2025-02-17 15:19:10 +08:00
parent 046279155d
commit 760f134d84
16 changed files with 357 additions and 127 deletions
@@ -9,10 +9,153 @@

 .. gpio-summary

-  To be updated
+The {IDF_TARGET_NAME} chip features 26 physical GPIO pins (GPIO0 ~ GPIO25). Each pin can be used as a general-purpose I/O, or to be connected to an internal peripheral signal. Through GPIO matrix and IO MUX, peripheral input signals can be from any IO pins, and peripheral output signals can be routed to any IO pins. Together these modules provide highly configurable I/O. 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>`__].
+
+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
+      - LP GPIO
+      - Comments
+
+    * - GPIO0
+      -
+      -
+      - Strapping pin
+
+    * - GPIO1
+      - ADC1_CH0
+      -
+      - Strapping pin
+
+    * - GPIO2
+      - ADC1_CH1
+      -
+      -
+
+    * - GPIO3
+      - ADC1_CH2
+      -
+      -
+
+    * - GPIO4
+      - ADC1_CH3
+      -
+      -
+
+    * - GPIO5
+      - ADC1_CH4
+      - LP_GPIO0
+      -
+
+    * - GPIO6
+      -
+      - LP_GPIO1
+      -
+
+    * - GPIO7
+      -
+      - LP_GPIO2
+      -
+
+    * - GPIO8
+      -
+      - LP_GPIO3
+      -
+
+    * - GPIO9
+      -
+      - LP_GPIO4
+      -
+
+    * - GPIO10
+      -
+      - LP_GPIO5
+      -
+
+    * - GPIO11
+      -
+      - LP_GPIO6
+      -
+
+    * - GPIO12
+      -
+      -
+      -
+
+    * - GPIO13
+      -
+      -
+      - Strapping pin
+
+    * - GPIO14
+      -
+      -
+      - Strapping pin
+
+    * - GPIO15
+      -
+      -
+      -
+
+    * - GPIO16
+      -
+      -
+      -
+
+    * - GPIO17
+      -
+      -
+      - USB-JTAG
+
+    * - GPIO18
+      -
+      -
+      - USB-JTAG
+
+    * - GPIO19
+      -
+      -
+      - SPI0/1
+
+    * - GPIO20
+      -
+      -
+      - SPI0/1
+
+    * - GPIO21
+      -
+      -
+      - SPI0/1
+
+    * - GPIO22
+      -
+      -
+      - SPI0/1
+
+    * - GPIO23
+      -
+      -
+      - SPI0/1
+
+    * - GPIO24
+      -
+      -
+      - SPI0/1
+
+    * - GPIO25
+      -
+      -
+      - SPI0/1

 .. note::

-  To be updated
+    - Strapping pin: GPIO0, GPIO1, GPIO13, and GPIO14 are strapping pins. For more information, please refer to `datasheet <{IDF_TARGET_DATASHEET_EN_URL}>`__.
+	  - SPI0/1: GPIO19 ~ GPIO25 are usually used for SPI flash and not recommended for other uses.
+	  - USB-JTAG: GPIO17 and GPIO18 are used by USB-JTAG by default. If they are reconfigured to operate as normal GPIOs, USB-JTAG functionality will be disabled.

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