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Diffstat (limited to 'doc/usage/cmd/gpio.rst')
| -rw-r--r-- | doc/usage/cmd/gpio.rst | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/doc/usage/cmd/gpio.rst b/doc/usage/cmd/gpio.rst index f6a5668388c..ee902138f16 100644 --- a/doc/usage/cmd/gpio.rst +++ b/doc/usage/cmd/gpio.rst @@ -45,6 +45,31 @@ gpio status Display the status of one or multiple GPIOs. By default only claimed GPIOs are displayed. +gpio status command output fields are:: + + <name>: <function>: <value> [x] <label> + +*function* can take the following values: + +output + pin configured in gpio output, *value* indicates the pin's level + +input + pin configured in gpio input, *value* indicates the pin's level + +func + pin configured in alternate function, followed by *label* + which shows pinmuxing label. + +unused + pin not configured + +*[x]* or *[ ]* indicate respectively if the gpio is used or not. + +*label* shows the gpio label. + +Parameters +---------- -a Display GPIOs irrespective of being claimed. @@ -77,6 +102,23 @@ Switch the status of a GPIO:: => echo $myvar 0 +Show the GPIO status:: + + => gpio status + Bank GPIOA: + GPIOA1: func rgmii-0 + GPIOA2: func rgmii-0 + GPIOA7: func rgmii-0 + GPIOA10: output: 0 [x] hdmi-transmitter@39.reset-gpios + GPIOA13: output: 1 [x] red.gpios + + Bank GPIOB: + GPIOB0: func rgmii-0 + GPIOB1: func rgmii-0 + GPIOB2: func uart4-0 + GPIOB7: input: 0 [x] mmc@58005000.cd-gpios + GPIOB11: func rgmii-0 + Configuration ------------- |