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Change stm32 usart baud rate generation to round rather than floor for more accurate divisor selection.

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Fergus Noble 2012-01-31 15:11:17 -08:00 committed by Uwe Hermann
parent d071a9ffde
commit 7c67322f75
1 changed files with 3 additions and 1 deletions
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lib/stm32/usart.c
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@ -52,8 +52,10 @@ void usart_set_baudrate(u32 usart, u32 baud)
* marketting bable to sound awesome. It is nothing else but a * marketting bable to sound awesome. It is nothing else but a
* simple divider to generate the correct baudrate. >_< If I * simple divider to generate the correct baudrate. >_< If I
* am wrong feel free to correct me on that. :) (esden) * am wrong feel free to correct me on that. :) (esden)
*
* Changed to round rather than floor (Fergus)
*/ */
USART_BRR(usart) = clock / baud; USART_BRR(usart) = (2*clock + baud) / (2*baud);
} }
void usart_set_databits(u32 usart, u32 bits) void usart_set_databits(u32 usart, u32 bits)