48 HAL USART Generic Driver
48.1 USART Firmware driver registers structures
48.1.1 USART_InitTypeDef
Data Fields
uint32_t BaudRate
uint32_t WordLength
uint32_t StopBits
uint32_t Parity
uint32_t Mode
uint32_t CLKPolarity
uint32_t CLKPhase
uint32_t CLKLastBit
Field Documentation
uint32_t USART_InitTypeDef::BaudRate
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
uint32_t USART_InitTypeDef::WordLength
Specifies the number of data bits transmitted or received in a frame. This parameter
can be a value of USART_Word_Length
uint32_t USART_InitTypeDef::StopBits
Specifies the number of stop bits transmitted. This parameter can be a value of
USART_Stop_Bits
uint32_t USART_InitTypeDef::Parity
Specifies the parity mode. This parameter can be a value of USART_Parity
Note:When parity is enabled, the computed parity is inserted at the MSB position of
the transmitted data (9th bit when the word length is set to 9 data bits; 8th bit when the
word length is set to 8 data bits).
uint32_t USART_InitTypeDef::Mode
Specifies whether the Receive or Transmit mode is enabled or disabled. This
parameter can be a value of USART_Mode
uint32_t USART_InitTypeDef::CLKPolarity
Specifies the steady state of the serial clock. This parameter can be a value of
USART_Clock_Polarity
uint32_t USART_InitTypeDef::CLKPhase
Specifies the clock transition on which the bit capture is made. This parameter can be
a value of USART_Clock_Phase
uint32_t USART_InitTypeDef::CLKLastBit
Specifies whether the clock pulse corresponding to the last transmitted data bit (MSB)
has to be output on the SCLK pin in synchronous mode. This parameter can be a
value of USART_Last_Bit
48.1.2 USART_HandleTypeDef
Data Fields
USART_TypeDef * Instance
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