AN4141 datasheet(28/42 Pages) STMICROELECTRONICS

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HAL to StdPeriph_Lib list of changes

AN4141

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DocID023425 Rev 2

3.3.7

Serial controller

The serial controller IP provided in the STM32W microcontroller family supports three

communication protocols: I2C, SPI and UART. The communication can be managed by flag

polling, interrupts and DMA. The Hardware Abstraction Layer provides only the API required

to manage basic UART communications. The new serial controller driver provided in

StdPeriph_driver covers all serial controller features.

Table 12. STM32W108xx WDG driver overview

HAL API

StdPeriph_Driver API

Functionality description

halInternalEnableWatchDog(void)

halInternalDisableWatchDog(int8u

magicKey)

WDG_Cmd(FunctionalState

NewState)

Enables/disables the watchdog

WDG_Cmd(ENABLE); enables

WDG WDG_Cmd(DISABLE);

disables WDG

void halInternalResetWatchDog()

WDG_ReloadCounter()

Reloads WDG counter

WDG_DebugConfig()

Status of WDG timer while in debug

mode (running or paused)

boolean halInternalWatchDogEnabled() FunctionalState WDG_GetStatus()

Gets the status of WDG (enabled or

not)

Table 13. STM32W108xx UART driver overview

StdPeriph_Driver API

Functionality description

UART_DeInit()

Deinitializes the SCx_UART peripheral registers to their default reset

values

UART_Init()

Initializes the SC1_UART peripheral according to the specified

parameters in UART_InitStruct

UART_StructInit()

Fills each UART_InitStruct member with its default value

UART_Cmd()

Enables or disables the specified SC1_UART peripheral

UART_ITConfig()

Enables or disables the specified SCx_UART interrupts

UART_TriggerEventConfig()

Triggers event configuration to handle the specified SCx_UART

interrupt

UART_RTSAssertionCmd()

Enables or disables the RTS assertion for the specified SC1_UART

peripheral

UART_SendData()

Transmits a data through the SC1_UART peripheral

UART_ReceiveData()

Returns the most recent received data by the SC1_UART peripheral

UART_GetFlagStatus()

Checks whether the specified SC1_UART flag is set or not

UART_GetITStatus

Checks whether the specified SC1_UART pending interrupt is set or

not

UART_ClearITPendingBit

Clears the SC1_UART interrupt pending bits

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