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[docs] Improve halconf/mcuconf code examples (#24597)

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Ryan 2024-11-15 05:00:02 +11:00 • committed by GitHub
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docs/drivers/uart.md
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@ -35,8 +35,12 @@ You'll need to determine which pins can be used for UART -- as an example, STM32
To enable UART, modify your board's `mcuconf.h` to enable the peripheral you've chosen, for example:
```c
#undef STM32_SERIAL_USE_USART2
#define STM32_SERIAL_USE_USART2 TRUE
#pragma once
#include_next <mcuconf.h>
#undef STM32_SERIAL_USE_USART2 // [!code focus]
#define STM32_SERIAL_USE_USART2 TRUE // [!code focus]
```
Configuration-wise, you'll need to set up the peripheral as per your MCU's datasheet -- the defaults match the pins for a Proton-C, i.e. STM32F303.