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docs: Update doc

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windowsair 2021-06-07 11:06:44 +08:00
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@ -85,11 +85,10 @@ You can also specify your IP in the above file (We recommend using the static ad
| GND | GND |
In order to use SPI acceleration, you need to physically connect `SWDIO(GPIO12)` to `SWDIO_MOSI(GPIO13)`.
Here, we give a simple example for reference:
![sch](https://user-images.githubusercontent.com/17078589/107851862-f9589e80-6e47-11eb-9eca-e80760822a6a.png)
![sch](https://user-images.githubusercontent.com/17078589/120953707-2a0a6e00-c780-11eb-9ad8-7221cf847974.png)
Alternatively, you can connect directly with wires as we gave at the beginning, without additional circuits.