47 HAL UART Generic Driver
47.1 UART Firmware driver registers structures
47.1.1 UART_InitTypeDef
Data Fields
uint32_t BaudRate
uint32_t WordLength
uint32_t StopBits
uint32_t Parity
uint32_t Mode
uint32_t HwFlowCtl
uint32_t OverSampling
Field Documentation
uint32_t UART_InitTypeDef::BaudRate
This member configures the UART communication baud rate. The baud rate is
computed using the following formula:IntegerDivider = ((PCLKx) / (8 * (OVR8+1) *
(huart->Init.BaudRate)))FractionalDivider = ((IntegerDivider - ((uint32_t)
IntegerDivider)) * 8 * (OVR8+1)) + 0.5 Where OVR8 is the "oversampling by 8 mode"
configuration bit in the CR1 register.
uint32_t UART_InitTypeDef::WordLength
Specifies the number of data bits transmitted or received in a frame. This parameter
can be a value of UART_Word_Length
uint32_t UART_InitTypeDef::StopBits
Specifies the number of stop bits transmitted. This parameter can be a value of
UART_Stop_Bits
uint32_t UART_InitTypeDef::Parity
Specifies the parity mode. This parameter can be a value of UART_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 UART_InitTypeDef::Mode
Specifies whether the Receive or Transmit mode is enabled or disabled. This
parameter can be a value of UART_Mode
uint32_t UART_InitTypeDef::HwFlowCtl
Specifies whether the hardware flow control mode is enabled or disabled. This
parameter can be a value of UART_Hardware_Flow_Control
uint32_t UART_InitTypeDef::OverSampling
Specifies whether the Over sampling 8 is enabled or disabled, to achieve higher
speed (up to fPCLK/8). This parameter can be a value of UART_Over_Sampling
47.1.2 UART_HandleTypeDef
Data Fields
USART_TypeDef * Instance
UART_InitTypeDef Init
uint8_t * pTxBuffPtr
uint16_t TxXferSize
__IO uint16_t TxXferCount
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