USART_InitTypeDef::BaudRate field
This member configures the Usart communication baud rate. The baud rate is computed using the following formula: - IntegerDivider = ((PCLKx) / (8 * (husart->Init.BaudRate))) - FractionalDivider = ((IntegerDivider - ((uint32_t) IntegerDivider)) * 8) + 0.5