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products:sbc:common:applications:gpio:40pin-header
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products:sbc:common:applications:gpio:40pin-header [2022/10/18 03:10] hyphop [Boards reference table vendor kernel] |
products:sbc:common:applications:gpio:40pin-header [2023/08/16 06:31] jacobe [Set GPIO value] |
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| ====== GPIO Header ====== | ====== GPIO Header ====== | ||
| - | Universal GPIO 40 pins board header, used for communication between board and different external devices. | + | ===== GPIO usage examples ===== |
| - | + | ||
| - | + | ||
| - | <WRAP important > | + | |
| - | Current GPIO numbers valid for vendor kernel only. Mainline linux kernel GPIO numbers will be different... | + | |
| - | </ | + | |
| - | + | ||
| - | + | ||
| - | ===== Control | + | |
| <WRAP important > | <WRAP important > | ||
| Line 22: | Line 14: | ||
| ```shell | ```shell | ||
| - | $ echo 465 | sudo tee / | + | $ echo 111 | sudo tee / |
| ``` | ``` | ||
| Line 30: | Line 22: | ||
| ```shell | ```shell | ||
| - | $ echo out | sudo tee / | + | $ echo out | sudo tee / |
| - | $ echo in | sudo tee / | + | $ echo in | sudo tee / |
| ``` | ``` | ||
| Line 37: | Line 29: | ||
| ```shell | ```shell | ||
| - | $ echo 1 | sudo tee / | + | $ echo 1 | sudo tee / |
| - | $ echo 0 | sudo tee / | + | $ echo 0 | sudo tee / |
| ``` | ``` | ||
| Line 44: | Line 36: | ||
| ```shell | ```shell | ||
| - | $ cat / | + | $ cat / |
| ``` | ``` | ||
| Line 50: | Line 42: | ||
| ```shell | ```shell | ||
| - | $ echo 465 | sudo tee / | + | $ echo 111 | sudo tee / |
| ``` | ``` | ||
| Line 58: | Line 50: | ||
| ```shell | ```shell | ||
| - | khadas@Khadas: | + | khadas@Khadas: |
| tee: / | tee: / | ||
| ``` | ``` | ||
Last modified: 2023/08/16 06:33 by jacobe