ST STM32F2 User Manual

UM1940
LL USART Generic Driver
DocID028236 Rev 2
1243/1371
Field Documentation
uint32_t LL_USART_ClockInitTypeDef::ClockOutput
Specifies whether the USART clock is enabled or disabled. This parameter can be a
value of USART_LL_EC_CLOCK.USART HW configuration can be modified
afterwards using unitary functions LL_USART_EnableSCLKOutput() or
LL_USART_DisableSCLKOutput(). For more details, refer to description of this
function.
uint32_t LL_USART_ClockInitTypeDef::ClockPolarity
Specifies the steady state of the serial clock. This parameter can be a value of
USART_LL_EC_POLARITY.USART HW configuration can be modified afterwards
using unitary functions LL_USART_SetClockPolarity(). For more details, refer to
description of this function.
uint32_t LL_USART_ClockInitTypeDef::ClockPhase
Specifies the clock transition on which the bit capture is made. This parameter can be
a value of USART_LL_EC_PHASE.USART HW configuration can be modified
afterwards using unitary functions LL_USART_SetClockPhase(). For more details,
refer to description of this function.
uint32_t LL_USART_ClockInitTypeDef::LastBitClockPulse
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_LL_EC_LASTCLKPULSE.USART HW configuration can be
modified afterwards using unitary functions LL_USART_SetLastClkPulseOutput().
For more details, refer to description of this function.
68.2 USART Firmware driver API description
68.2.1 Detailed description of functions
LL_USART_Enable
Function name
__STATIC_INLINE void LL_USART_Enable (USART_TypeDef *
USARTx)
Function description
USART Enable.
Parameters
USARTx: USART Instance
Return values
None:
Reference Manual to
LL API cross
reference:
CR1 UE LL_USART_Enable
LL_USART_Disable
Function name
__STATIC_INLINE void LL_USART_Disable (USART_TypeDef
* USARTx)
Function description
USART Disable (all USART prescalers and outputs are disabled)
Parameters
USARTx: USART Instance
Return values
None:
Notes
When USART is disabled, USART prescalers and outputs are
stopped immediately, and current operations are discarded.
The configuration of the USART is kept, but all the status

ST STM32F2 Specifications

General

Brand	ST
Model	STM32F2
Category	Microcontrollers
Language	English