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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 06:30] jacobe [Get 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 > | ||
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```shell | ```shell | ||
- | $ echo 465 | sudo tee / | + | $ echo 111 | sudo tee / |
``` | ``` | ||
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```shell | ```shell | ||
- | $ echo out | sudo tee / | + | $ echo out | sudo tee / |
- | $ echo in | sudo tee / | + | $ echo in | sudo tee / |
``` | ``` | ||
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```shell | ```shell | ||
- | $ cat / | + | $ cat / |
``` | ``` | ||