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### USARTS
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In `arch/common/drivers/serial_stm32.cpp` you can find how
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the 3 Usarts that Miosix lets you use are configured.
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| USART | TX | RX | CTS | RTS |
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|--------|-----|-----|------|-------|
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| 1 | PA9 | PA0 | PA11 | PA12 |
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| 2 | PA2 | PA3 | PA0 | PA1 |
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| 3 | PB10 | PB11 | PB13 | PB14 |
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### Usage
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Standard input and output (`printf()` and `scanf()`) are redirected to the [default USART](#settings).
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