Difference between revisions of "GPIO"
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[[GPIO/zh|查看中文]] | [[GPIO/zh|查看中文]] | ||
| + | ===S5P4418/S5P6818 GPIO pin definition=== | ||
| + | See pin definition, total GPIOA ~ GPIOD 4 group，<br /> | ||
| + | Use the following command to see the GPIO pins.<br /> | ||
| + | <syntaxhighlight lang="bash"> | ||
| + | #/bin/sh | ||
| + | cd /sys/class/gpio | ||
| + | for i in gpiochip* ; do echo `cat $i/label`: `cat $i/base` ; done | ||
| + | </syntaxhighlight> | ||
| + | Output on T2: | ||
| + | <syntaxhighlight lang="bash"> | ||
| + | nxp-gpio.0: 0 | ||
| + | nxp-gpio.4: 128 | ||
| + | nxp-gpio.5: 160 | ||
| + | nxp-gpio.1: 32 | ||
| + | nxp-gpio.2: 64 | ||
| + | nxp-gpio.3: 96 | ||
| + | </syntaxhighlight> | ||
| + | Each label represents a group, and the above shows 6 groups.<br /> | ||
| + | Then the corresponding is:<br /> | ||
| + | <syntaxhighlight lang="bash"> | ||
| + | nxp-gpio.0: 0 -> GPIOA | ||
| + | nxp-gpio.4: 128 -> GPIOE ->AliveGPIO3 | ||
| + | nxp-gpio.5: 160 -> GPIOF ->AliveGPIO5 | ||
| + | nxp-gpio.1: 32 -> GPIOB | ||
| + | nxp-gpio.2: 64 -> GPIOC | ||
| + | nxp-gpio.3: 96 -> GPIOD | ||
| + | </syntaxhighlight> | ||
| + | The difference between each group is 32, which is checked by the cat gpiochip0/ngpio command. | ||
Revision as of 03:30, 20 March 2019
S5P4418/S5P6818 GPIO pin definition
See pin definition, total GPIOA ~ GPIOD 4 group，
Use the following command to see the GPIO pins.
#/bin/sh cd /sys/class/gpio for i in gpiochip* ; do echo `cat $i/label`: `cat $i/base` ; done
Output on T2:
nxp-gpio.0: 0 nxp-gpio.4: 128 nxp-gpio.5: 160 nxp-gpio.1: 32 nxp-gpio.2: 64 nxp-gpio.3: 96
Each label represents a group, and the above shows 6 groups.
Then the corresponding is:
nxp-gpio.0: 0 -> GPIOA nxp-gpio.4: 128 -> GPIOE ->AliveGPIO3 nxp-gpio.5: 160 -> GPIOF ->AliveGPIO5 nxp-gpio.1: 32 -> GPIOB nxp-gpio.2: 64 -> GPIOC nxp-gpio.3: 96 -> GPIOD
The difference between each group is 32, which is checked by the cat gpiochip0/ngpio command.
