/* USART Disable Half-duplex. 
@This bit field can only be written when the USART is disabled. */
void usart_disable_halfduplex(uint32_t usart)
/* USART Disable Half-duplex. 
@This bit field can only be written when the USART is disabled. */
void usart_disable_halfduplex(uint32_t usart)
{
	USART_CR3(usart) &= ~USART_CR3_HDSEL;
}