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--- products:sbc:common:applications:gpio:get-gpio-number [2024/08/06 05:47]
nick ↷ Page name changed from products:sbc:common:applications:gpio:cal-gpio-number to products:sbc:common:applications:gpio:get-gpio-number
+++ products:sbc:common:applications:gpio:get-gpio-number [2024/08/06 06:05] (current)
nick
@@ Line 1: / Line 1: @@
-====== Get GPIO Number ======
+====== Get GPIO number ======
-To use a GPIO pin, you need to know its PIN number.
+**Calculation:**
-==== Calculation ====
 GPIO PIN number calculation method: ''Number = Range Base + Pin Index''
-. ''Range Base'' refers to the base value of GPIO ranges.
+  * ''Range Base'' refers to the base value of GPIO ranges
+  * ''Pin Index'' refers to the sorting of the GPIO pins you need to calculate in the corresponding ranges
-. ''Pin Index'' refers to the sorting of the GPIO pins you need to calculate in the corresponding ranges.
-===== Example =====
+**Example:**
 . Get ''Range Base'':
-```sh
+```shell
 # cat /sys/kernel/debug/pinctrl/fe000000.apb4\:pinctrl\@4000-pinctrl-meson/gpio-ranges
 GPIO ranges handled:
@@ Line 24: / Line 21: @@
 . Get ''Pin Index'':
-```sh
+```shell
 # cat /sys/kernel/debug/pinctrl/fe000000.apb4\:pinctrl\@4000-pinctrl-meson/pins
 registered pins: 82

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