AN4141 datasheet(30/42 Pages) STMICROELECTRONICS

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HAL to StdPeriph_Lib list of changes

AN4141

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DocID023425 Rev 2

3.3.8

GPIO

The STM32W108 has 24 multi-purpose GPIO pins that may be individually configured as

Input, Output, Analog or Alternate.

To migrate to StdPeriph_Driver, the GPIO registers are split into registers for GPIO and

others for external interrupts EXTI.

The following table provides an overview of the HAL vs StdPeriph functions that enable a

standard use of the GPIO features. The StdPeriph functions provide an equivalent for HAL

code providing the same functionality.

Table 16. STM32W108xx DMA driver overview

StdPeriph_Driver API

Functionality description

SC_DMA_ChannelReset()

Resets the specified SCx_DMA Channely buffer addresses

SC_DMA_Init()

Initializes the SCx_DMA Channely according to the specified

parameters in the DMA_InitStruct

SC_DMA_StructInit()

Fills each DMA_InitStruct member with its default value

SC_DMA_ChannelLoadEnable()

Loads and enables the specified SCx_DMA Channelxy buffer

addresses

SC_DMA_ITConfig()

Enables or disables the specified SCx_DMA interrupts

SC_DMA_GetCounter()

Returns the most recent value for the specific SCx_DMA

counter register

SC_DMA_GetReceiverErrorOffset() Returns the specified SCx_DMA receive error register

SC_DMA_GetFlagStatus()

Checks whether the specified DMA flag is set or not

SC_DMA_GetITStatus()

Checks whether the specified SCx_DMA pending interrupt is

set or not

SC_DMA_ClearITPendingBit()

Clears the SCx_DMA interrupt pending bits

AN4141 데이터시트(PDF) 30 Page - STMicroelectronics