/* USART Disable TX pin active level inversion. 
TX pin signal works using the standard logic levels (VDD =1/idle, Gnd=0/mark) */
void usart_disable_tx_inversion(uint32_t usart)
/* USART Disable TX pin active level inversion. 
TX pin signal works using the standard logic levels (VDD =1/idle, Gnd=0/mark) */
void usart_disable_tx_inversion(uint32_t usart)
{
	USART_CR2(usart) &= ~USART_CR2_TXINV;
}